/* About Page Specific Styles */

/* About Header */
.about-header {
    text-align: center;
    margin: 100px 0 50px 0;
    background: rgba(0, 0, 0, 0.7);
    padding: 40px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}
/*
.about-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%,
        var(--wave-trough) 20%, 
        var(--wave-mid) 40%, 
        var(--wave-peak) 60%, 
        var(--wave-mid) 80%, 
        var(--wave-trough) 100%,
        transparent 100%);
    opacity: 0.03;
    animation: logoWaveMove 20s linear infinite;
}*/

/* Thêm hiệu ứng nhẹ cho header mà không ảnh hưởng đến sóng nền */
.about-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--wave-trough), var(--wave-peak), var(--wave-trough), transparent);
    opacity: 0.5;
}

.about-title {
    font-size: 3em;
    background: linear-gradient(to right, var(--wave-trough), var(--wave-peak));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 15px;
    position: relative;
    z-index: 2;
}

.about-subtitle {
    font-size: 1.5em;
    color: var(--text-glow);
    margin-bottom: 25px;
    font-weight: 300;
    position: relative;
    z-index: 2;
}

.about-badge {
    display: inline-block;
    background: linear-gradient(to right, var(--wave-trough), var(--wave-mid));
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1.1em;
    font-weight: bold;
    letter-spacing: 1px;
    position: relative;
    z-index: 2;
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
}

/* About Content Section */
.about-content-section {
    width: 100%;
    margin-bottom: 50px;
}

.about-container {
    max-width: 1000px;
    margin: 0 auto;
}

/* About Sections */
.about-section {
    margin-bottom: 60px;
    background: rgba(0, 0, 0, 0.5);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.5s ease;
}

.about-section:hover {
    border-color: var(--wave-mid);
    box-shadow: 0 10px 30px rgba(247, 147, 26, 0.1);
}

.about-section h2 {
    color: var(--wave-mid);
    margin-bottom: 25px;
    font-size: 2em;
    display: flex;
    align-items: center;
    gap: 15px;
}

.about-section h2 i {
    font-size: 1.2em;
}

.about-text {
    color: var(--text-glow);
    line-height: 1.8;
    font-size: 1.1em;
}

.about-text p {
    margin-bottom: 20px;
}

.about-text strong {
    color: var(--wave-trough);
}

.about-text em {
    color: var(--wave-peak);
    font-style: normal;
}

/* Process Steps */
.process-steps {
    display: flex;
    flex-direction: column;
    gap: 40px;
    position: relative;
    padding-left: 50px;
}

.process-steps::before {
    content: '';
    position: absolute;
    left: 25px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, 
        var(--wave-trough), 
        var(--wave-mid), 
        var(--wave-peak), 
        #9c27b0);
}

.process-step {
    position: relative;
    display: flex;
    gap: 25px;
    align-items: flex-start;
}

.step-number {
    position: absolute;
    left: -55px;
    top: 0;
    width: 40px;
    height: 40px;
    background: var(--wave-trough);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.2em;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
    z-index: 2;
}

.process-step:nth-child(2) .step-number {
    background: var(--wave-mid);
    box-shadow: 0 0 20px rgba(247, 147, 26, 0.5);
}

.process-step:nth-child(3) .step-number {
    background: var(--wave-peak);
    box-shadow: 0 0 20px rgba(255, 46, 99, 0.5);
}

.process-step:nth-child(4) .step-number {
    background: #9c27b0;
    box-shadow: 0 0 20px rgba(156, 39, 176, 0.5);
}

.step-content {
    flex: 1;
}

.step-content h3 {
    color: var(--wave-trough);
    margin-bottom: 15px;
    font-size: 1.5em;
}

.process-step:nth-child(2) .step-content h3 {
    color: var(--wave-mid);
}

.process-step:nth-child(3) .step-content h3 {
    color: var(--wave-peak);
}

.process-step:nth-child(4) .step-content h3 {
    color: #9c27b0;
}

.step-content p {
    color: var(--text-glow);
    margin-bottom: 15px;
    line-height: 1.7;
}

.step-content ul {
    color: var(--text-glow);
    padding-left: 20px;
    margin-bottom: 15px;
}

.step-content li {
    margin-bottom: 8px;
    line-height: 1.6;
}

/* Technology Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.tech-card {
    background: rgba(0, 0, 0, 0.3);
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.5s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.tech-card:hover {
    transform: translateY(-10px);
    border-color: var(--wave-trough);
    box-shadow: 0 15px 30px rgba(0, 212, 255, 0.1);
}

.tech-icon {
    font-size: 3em;
    color: var(--wave-trough);
    margin-bottom: 20px;
}

.tech-card:nth-child(2) .tech-icon {
    color: var(--wave-mid);
}

.tech-card:nth-child(3) .tech-icon {
    color: var(--wave-peak);
}

.tech-card:nth-child(4) .tech-icon {
    color: #9c27b0;
}

.tech-card h3 {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 1.3em;
}

.tech-card p {
    color: var(--text-glow);
    line-height: 1.6;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.feature-item {
    background: rgba(0, 0, 0, 0.3);
    padding: 25px 20px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.5s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-item:hover {
    transform: translateY(-5px);
    border-color: var(--wave-mid);
    box-shadow: 0 10px 25px rgba(247, 147, 26, 0.1);
}

.feature-item i {
    font-size: 2.5em;
    color: var(--wave-trough);
    margin-bottom: 20px;
}

.feature-item:nth-child(2) i {
    color: var(--wave-mid);
}

.feature-item:nth-child(3) i {
    color: var(--wave-peak);
}

.feature-item:nth-child(4) i {
    color: #9c27b0;
}

.feature-item h4 {
    color: var(--text-light);
    margin-bottom: 10px;
    font-size: 1.2em;
}

.feature-item p {
    color: var(--text-glow);
    font-size: 0.95em;
    line-height: 1.5;
}

/* Important Notice */
.about-notice {
    background: rgba(255, 46, 99, 0.1);
    border: 1px solid rgba(255, 46, 99, 0.3);
    border-left: 5px solid var(--wave-peak);
    padding: 30px;
    border-radius: 12px;
    margin: 50px 0;
    display: flex;
    gap: 25px;
    align-items: flex-start;
}

.notice-icon {
    font-size: 2.5em;
    color: var(--wave-peak);
}

.notice-content h3 {
    color: var(--wave-peak);
    margin-bottom: 15px;
    font-size: 1.5em;
}

.notice-content p {
    color: var(--text-glow);
    line-height: 1.8;
    margin-bottom: 15px;
}

.notice-content strong {
    color: var(--wave-peak);
}

.notice-content em {
    color: var(--wave-trough);
    font-style: normal;
}

/* Mission Statement */
.about-mission {
    text-align: center;
    background: rgba(0, 212, 255, 0.05);
    padding: 40px;
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    margin: 50px 0;
}

.about-mission h2 {
    color: var(--wave-trough);
    margin-bottom: 25px;
    font-size: 2.2em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.mission-statement {
    color: var(--text-light);
    font-size: 1.3em;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
    font-style: italic;
}

/* Back to Home Button */
.back-home {
    text-align: center;
    margin: 50px 0;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(to right, var(--wave-mid), var(--wave-peak));
    color: white;
    padding: 15px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.back-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    gap: 15px;
}

/* Responsive for About Page */
@media (max-width: 768px) {
    .about-header {
        padding: 30px 20px;
        margin: 80px 0 30px 0;
    }
    
    .about-title {
        font-size: 2.2em;
    }
    
    .about-subtitle {
        font-size: 1.2em;
    }
    
    .about-badge {
        font-size: 1em;
        padding: 10px 20px;
    }
    
    .about-section {
        padding: 25px 20px;
    }
    
    .about-section h2 {
        font-size: 1.7em;
    }
    
    .process-steps {
        padding-left: 40px;
    }
    
    .process-steps::before {
        left: 20px;
    }
    
    .step-number {
        left: -45px;
        width: 35px;
        height: 35px;
        font-size: 1em;
    }
    
    .tech-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .about-notice {
        flex-direction: column;
        padding: 25px 20px;
    }
    
    .notice-icon {
        align-self: center;
    }
    
    .mission-statement {
        font-size: 1.1em;
    }
}
/* Additional Styles for Updated About Page */

/* System Flow */
.system-flow {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 30px 0;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.flow-item {
    text-align: center;
    flex: 1;
}

.flow-item i {
    font-size: 2em;
    color: var(--wave-trough);
    margin-bottom: 10px;
}

.flow-item:nth-child(2) i {
    color: var(--wave-mid);
}

.flow-item:nth-child(3) i {
    color: var(--wave-peak);
}

.flow-item h4 {
    color: var(--text-light);
    margin-bottom: 5px;
    font-size: 1.1em;
}

.flow-item p {
    color: var(--text-glow);
    font-size: 0.9em;
}

.flow-arrow {
    color: var(--wave-mid);
    font-size: 1.5em;
    padding: 0 10px;
}

/* Product Integration */
.product-integration {
    margin-top: 20px;
}

.product-integration p {
    color: var(--text-glow);
    line-height: 1.6;
    margin-bottom: 30px;
    font-size: 1.1em;
}

.product-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.product-feature {
    background: rgba(0, 0, 0, 0.3);
    padding: 20px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.product-feature:hover {
    transform: translateY(-5px);
    border-color: var(--wave-trough);
    box-shadow: 0 10px 20px rgba(0, 212, 255, 0.1);
}

.product-feature i {
    font-size: 2em;
    color: var(--wave-trough);
    margin-bottom: 15px;
}

.product-feature:nth-child(2) i {
    color: var(--wave-mid);
}

.product-feature:nth-child(3) i {
    color: var(--wave-peak);
}

.product-feature:nth-child(4) i {
    color: #9c27b0;
}

.product-feature h4 {
    color: var(--text-light);
    margin-bottom: 10px;
    font-size: 1.2em;
}

.product-feature p {
    color: var(--text-glow);
    font-size: 0.9em;
    line-height: 1.5;
    margin: 0;
}

.product-cta {
    text-align: center;
    margin-top: 30px;
}

.product-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(to right, var(--wave-trough), #9c27b0);
    color: white;
    padding: 12px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1em;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.product-link-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    gap: 15px;
}

/* Page Links */
.page-links {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin: 50px 0;
    flex-wrap: wrap;
}

.back-btn, .product-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1em;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    flex: 1;
    min-width: 200px;
    justify-content: center;
}

.back-btn {
    background: linear-gradient(to right, var(--wave-mid), var(--wave-peak));
    color: white;
}

.product-btn {
    background: linear-gradient(to right, #9c27b0, #673ab7);
    color: white;
}

.back-btn:hover, .product-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    gap: 15px;
}

/* Responsive Updates */
@media (max-width: 768px) {
    .system-flow {
        flex-direction: column;
        gap: 20px;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
        padding: 10px 0;
    }
    
    .product-features {
        grid-template-columns: 1fr;
    }
    
    .page-links {
        flex-direction: column;
    }
    
    .back-btn, .product-btn {
        width: 100%;
    }
}

/* Knowledge Base Header Styling - Đồng bộ với trang chủ */
.learn-header {
    text-align: center;
    margin: 40px 0 30px 0;
    padding: 30px 20px;
    position: relative;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    overflow: hidden;
}

.learn-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent,
        rgba(0, 212, 255, 0.1),
        rgba(247, 147, 26, 0.1),
        rgba(255, 46, 99, 0.1),
        transparent
    );
    animation: headerShine 8s infinite;
}

@keyframes headerShine {
    0% { left: -100%; }
    20% { left: 100%; }
    100% { left: 100%; }
}

.learn-title {
    font-size: 2.5em;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
    padding-bottom: 20px;
}

.learn-title i {
    background: linear-gradient(135deg, var(--wave-trough), var(--wave-mid), var(--wave-peak));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-right: 15px;
    font-size: 1.2em;
}

.learn-title .highlight {
    background: linear-gradient(to right, 
        var(--wave-trough) 0%,
        var(--wave-mid) 50%,
        var(--wave-peak) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
    letter-spacing: 1px;
}

.learn-title .bitcoin-text {
    background: linear-gradient(135deg, 
        var(--wave-trough) 0%,
        var(--wave-peak) 50%,
        #9c27b0 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 900;
    text-transform: uppercase;
}

/* Underline với hiệu ứng gradient động */
.learn-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 4px;
    background: linear-gradient(90deg, 
        var(--wave-trough) 0%,
        var(--wave-mid) 25%,
        var(--wave-peak) 50%,
        #9c27b0 75%,
        var(--wave-trough) 100%
    );
    border-radius: 4px;
    box-shadow: 0 0 15px var(--wave-trough);
    animation: underlinePulse 3s ease-in-out infinite;
}

/* Thêm hiệu ứng glow cho underline */
@keyframes underlinePulse {
    0%, 100% {
        opacity: 0.8;
        box-shadow: 0 0 15px var(--wave-trough);
        width: 80%;
    }
    50% {
        opacity: 1;
        box-shadow: 0 0 25px var(--wave-peak), 0 0 35px var(--wave-mid);
        width: 85%;
    }
}

/* Subtitle styling */
.learn-subtitle {
    font-size: 1.3em;
    background: linear-gradient(to right, 
        rgba(255, 255, 255, 0.9), 
        var(--wave-trough)
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 10px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    position: relative;
    display: inline-block;
    padding: 0 20px;
}

.learn-subtitle::before,
.learn-subtitle::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--wave-trough));
}

.learn-subtitle::before {
    left: -20px;
    transform: translateY(-50%);
}

.learn-subtitle::after {
    right: -20px;
    transform: translateY(-50%) rotate(180deg);
}

/* Thêm hiệu ứng wave nhẹ cho background */
.learn-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: repeating-linear-gradient(
        90deg,
        var(--wave-trough) 0px,
        var(--wave-trough) 10px,
        transparent 10px,
        transparent 20px
    );
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
    .learn-header {
        padding: 25px 15px;
        margin: 30px 0 20px 0;
    }
    
    .learn-title {
        font-size: 1.8em;
    }
    
    .learn-title::after {
        width: 90%;
    }
    
    .learn-subtitle {
        font-size: 1.1em;
    }
    
    .learn-subtitle::before,
    .learn-subtitle::after {
        width: 15px;
    }
}

/* Animation cho title khi hover */
.learn-header:hover .learn-title {
    transform: scale(1.02);
    transition: transform 0.3s ease;
}

.learn-header:hover .learn-title::after {
    animation: underlineGlow 1.5s ease-in-out infinite;
}

@keyframes underlineGlow {
    0%, 100% {
        box-shadow: 0 0 20px var(--wave-trough), 0 0 30px var(--wave-mid);
    }
    50% {
        box-shadow: 0 0 30px var(--wave-peak), 0 0 50px #9c27b0;
    }
}

/* Learn Grid Styling - Đồng bộ với trang chủ */
.learn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 40px 0;
    position: relative;
}

/* Card styling với hiệu ứng giống feature-card */
.learn-card {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px 25px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Hiệu ứng glow khi hover */
.learn-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 0%, 
        rgba(0, 212, 255, 0.2) 0%, 
        transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.learn-card::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, 
        var(--wave-trough), 
        var(--wave-mid), 
        var(--wave-peak), 
        #9c27b0, 
        var(--wave-trough));
    background-size: 400% 400%;
    border-radius: 18px;
    opacity: 0;
    z-index: -1;
    transition: opacity 0.4s ease;
    animation: gradientBorder 3s ease infinite;
}

@keyframes gradientBorder {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.learn-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: transparent;
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.learn-card:hover::before {
    opacity: 1;
}

.learn-card:hover::after {
    opacity: 1;
}

/* Icon styling - đồng bộ với feature-card */
.card-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.2), 
        rgba(247, 147, 26, 0.2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    position: relative;
    transition: all 0.4s ease;
}

.card-icon::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: linear-gradient(135deg, 
        var(--wave-trough), 
        var(--wave-mid), 
        var(--wave-peak));
    opacity: 0.5;
    filter: blur(5px);
    transition: all 0.4s ease;
    z-index: -1;
}

.learn-card:hover .card-icon {
    transform: scale(1.1) rotate(360deg);
}

.learn-card:hover .card-icon::before {
    opacity: 0.8;
    filter: blur(8px);
    inset: -5px;
}

.card-icon i {
    font-size: 2.2em;
    background: linear-gradient(135deg, 
        var(--wave-trough), 
        var(--wave-mid), 
        var(--wave-peak));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    transition: all 0.4s ease;
}

/* Title styling */
.learn-card h3 {
    color: #ffffff !important;
    font-size: 1.5em;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
    transition: all 0.3s ease;
}

.learn-card h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--wave-trough), 
        var(--wave-peak));
    border-radius: 3px;
    transition: all 0.4s ease;
}

.learn-card:hover h3::after {
    width: 100%;
    background: linear-gradient(90deg, 
        var(--wave-trough), 
        var(--wave-mid), 
        var(--wave-peak), 
        #9c27b0);
}

/* Description styling */
.learn-card p {
    color: rgba(255, 255, 255, 0.9) !important;
    line-height: 1.7;
    margin-bottom: 25px;
    flex-grow: 1;
    font-size: 0.95em;
}

/* Meta info styling - đồng bộ với badges */
.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.learn-card:hover .card-meta {
    border-top-color: rgba(0, 212, 255, 0.3);
}

.card-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.8) !important;
    font-size: 0.9em;
}

.card-meta span:last-child {
    background: rgba(0, 212, 255, 0.15);
    padding: 6px 12px;
    border-radius: 20px;
    color: #00d4ff !important;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all 0.3s ease;
}

.learn-card:hover .card-meta span:last-child {
    background: rgba(0, 212, 255, 0.25);
    border-color: var(--wave-trough);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.card-meta span i {
    color: var(--wave-trough);
    font-size: 0.9em;
}

/* Color variations cho mỗi card dựa trên level */
.learn-card:nth-child(1) .card-icon {
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.2), 
        rgba(0, 212, 255, 0.1));
}

.learn-card:nth-child(2) .card-icon {
    background: linear-gradient(135deg, 
        rgba(247, 147, 26, 0.2), 
        rgba(247, 147, 26, 0.1));
}

.learn-card:nth-child(2) .card-meta span:last-child {
    background: rgba(247, 147, 26, 0.15);
    color: var(--wave-mid) !important;
    border-color: rgba(247, 147, 26, 0.2);
}

.learn-card:nth-child(2):hover .card-meta span:last-child {
    background: rgba(247, 147, 26, 0.25);
    box-shadow: 0 0 15px rgba(247, 147, 26, 0.3);
}

.learn-card:nth-child(3) .card-icon {
    background: linear-gradient(135deg, 
        rgba(255, 46, 99, 0.2), 
        rgba(255, 46, 99, 0.1));
}

.learn-card:nth-child(3) .card-meta span:last-child {
    background: rgba(255, 46, 99, 0.15);
    color: var(--wave-peak) !important;
    border-color: rgba(255, 46, 99, 0.2);
}

.learn-card:nth-child(3):hover .card-meta span:last-child {
    background: rgba(255, 46, 99, 0.25);
    box-shadow: 0 0 15px rgba(255, 46, 99, 0.3);
}

.learn-card:nth-child(4) .card-icon {
    background: linear-gradient(135deg, 
        rgba(156, 39, 176, 0.2), 
        rgba(156, 39, 176, 0.1));
}

.learn-card:nth-child(4) .card-meta span:last-child {
    background: rgba(156, 39, 176, 0.15);
    color: #9c27b0 !important;
    border-color: rgba(156, 39, 176, 0.2);
}

.learn-card:nth-child(4):hover .card-meta span:last-child {
    background: rgba(156, 39, 176, 0.25);
    box-shadow: 0 0 15px rgba(156, 39, 176, 0.3);
}

/* Hiệu ứng ripple khi click */
.learn-card:active {
    transform: scale(0.98);
}

.learn-card:active::after {
    opacity: 0.8;
}

/* Recent Posts Section Styling */
.recent-posts {
    margin: 60px 0 30px 0;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.recent-posts h2 {
    color: #ffffff !important;
    font-size: 2em;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
    padding-bottom: 15px;
}

.recent-posts h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, 
        var(--wave-trough), 
        var(--wave-mid), 
        var(--wave-peak));
    border-radius: 4px;
}

.recent-posts h2 i {
    color: var(--wave-trough);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

.posts-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

/* Blog post items styling */
.post-item {
    background: rgba(0, 0, 0, 0.4);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.post-item:hover {
    transform: translateY(-5px);
    border-color: var(--wave-trough);
    box-shadow: 0 10px 20px rgba(0, 212, 255, 0.2);
    background: rgba(0, 0, 0, 0.6);
}

.post-item h3 {
    color: #ffffff;
    font-size: 1.2em;
    margin-bottom: 10px;
}

.post-meta {
    display: flex;
    justify-content: space-between;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85em;
}

.post-meta span i {
    color: var(--wave-trough);
    margin-right: 5px;
}

/* Responsive */
@media (max-width: 768px) {
    .learn-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .learn-card {
        padding: 25px 20px;
    }
    
    .card-icon {
        width: 60px;
        height: 60px;
    }
    
    .card-icon i {
        font-size: 1.8em;
    }
    
    .learn-card h3 {
        font-size: 1.3em;
    }
    
    .recent-posts {
        padding: 20px;
    }
    
    .recent-posts h2 {
        font-size: 1.6em;
    }
}

/* Animation cho cards khi load */
@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.learn-card {
    animation: cardAppear 0.5s ease forwards;
    opacity: 0;
}

.learn-card:nth-child(1) { animation-delay: 0.1s; }
.learn-card:nth-child(2) { animation-delay: 0.2s; }
.learn-card:nth-child(3) { animation-delay: 0.3s; }
.learn-card:nth-child(4) { animation-delay: 0.4s; }

/* Founder Contact */
.founder-contact {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    background: rgba(0, 212, 255, 0.05);
    padding: 20px;
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.8);
}

.contact-item i {
    color: #00d4ff;
    font-size: 1.2em;
    width: 24px;
}

.contact-item a {
    color: #ffffff;
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.contact-item a:hover {
    color: #00d4ff;
    border-bottom-color: #00d4ff;
}

/* LinkedIn specific hover */
.contact-item .fa-linkedin:hover {
    color: #0077b5;
    filter: drop-shadow(0 0 8px #0077b5);
}

/* Footer Contact */
.footer-contact {
    margin: 20px 0;
    text-align: center;
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    padding: 15px 0;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.footer-contact-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer-contact-item i {
    color: #00d4ff;
    font-size: 1.2em;
}

.footer-contact-item a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 1em;
    transition: all 0.3s ease;
}

.footer-contact-item a:hover {
    color: #00d4ff;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.footer-contact-item .fa-linkedin:hover {
    color: #0077b5;
    text-shadow: 0 0 10px rgba(0, 119, 181, 0.5);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .founder-card {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }
    
    .founder-avatar {
        font-size: 100px;
    }
    
    .founder-contact {
        justify-content: center;
    }
    
    .footer-contact {
        flex-direction: column;
        gap: 15px;
    }
    
    .contact-item {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .founder-contact {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .footer-contact-item {
        width: 100%;
        justify-content: center;
    }
}
/* Methodology Section - The Science Behind the Waves */
.methodology-section {
    margin-top: 40px;
}

.methodology-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 30px;
}

.methodology-card {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 25px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.methodology-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--wave-trough), var(--wave-peak), #9c27b0);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.methodology-card:hover::before {
    transform: translateX(0);
}

.methodology-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(0, 212, 255, 0.3);
}

.methodology-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.methodology-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(255, 46, 99, 0.2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8em;
    color: var(--wave-trough);
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: all 0.3s ease;
}

.methodology-card:hover .methodology-icon {
    transform: rotate(360deg) scale(1.1);
    background: linear-gradient(135deg, var(--wave-trough), var(--wave-peak));
    color: white;
    border-color: transparent;
}

.methodology-title {
    flex: 1;
}

.methodology-title h3 {
    color: white;
    font-size: 1.5em;
    margin-bottom: 5px;
}

.efficiency-badge {
    display: inline-block;
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8em;
    font-weight: bold;
    letter-spacing: 0.5px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
    0%, 100% { box-shadow: 0 0 10px rgba(76, 175, 80, 0.3); }
    50% { box-shadow: 0 0 20px rgba(76, 175, 80, 0.7); }
}

.methodology-content {
    padding: 10px 0;
}

.methodology-content p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.05em;
}

.methodology-content strong {
    color: var(--wave-trough);
}

.methodology-content .highlight {
    background: rgba(0, 212, 255, 0.15);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--wave-trough);
    font-weight: 600;
}

.methodology-content .emphasis {
    color: var(--wave-peak);
    font-weight: 700;
    font-size: 1.1em;
    text-shadow: 0 0 10px rgba(255, 46, 99, 0.5);
}

.methodology-goal, .methodology-result {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(0, 0, 0, 0.3);
    padding: 12px 18px;
    border-radius: 10px;
    margin-bottom: 15px;
    border-left: 3px solid transparent;
    transition: all 0.3s ease;
}

.methodology-goal {
    border-left-color: #f7931a;
}

.methodology-goal i {
    color: #f7931a;
    font-size: 1.2em;
}

.methodology-result {
    border-left-color: #4CAF50;
}

.methodology-result i {
    color: #4CAF50;
    font-size: 1.2em;
}

.methodology-goal:hover, .methodology-result:hover {
    transform: translateX(5px);
    background: rgba(0, 0, 0, 0.5);
}

.methodology-goal span, .methodology-result span {
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.5;
    flex: 1;
}

/* Stats */
.methodology-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.methodology-stats .stat {
    text-align: center;
}

.methodology-stats .stat-value {
    display: block;
    font-size: 2em;
    font-weight: bold;
    background: linear-gradient(135deg, var(--wave-trough), var(--wave-peak));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.2;
}

.methodology-stats .stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Pillars */
.pillars-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 20px 0;
}

.pillar {
    display: flex;
    align-items: center;
    gap: 15px;
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.pillar:hover {
    background: rgba(0, 212, 255, 0.05);
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateX(5px);
}

.pillar-icon {
    width: 40px;
    height: 40px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--wave-trough);
    font-size: 1.2em;
}

.pillar-content {
    flex: 1;
}

.pillar-content h4 {
    color: white;
    font-size: 1.1em;
    margin-bottom: 5px;
}

.pillar-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9em;
    margin: 0;
    line-height: 1.5;
}

/* Process Flow */
.process-flow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 30px 0;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--wave-trough), var(--wave-mid));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.1em;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.process-step:nth-child(1) .step-number {
    background: linear-gradient(135deg, #f7931a, #ff9800);
    box-shadow: 0 0 20px rgba(247, 147, 26, 0.5);
}

.process-step:nth-child(3) .step-number {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    box-shadow: 0 0 20px rgba(76, 175, 80, 0.5);
}

.step-desc {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9em;
    font-weight: 500;
    text-align: center;
}

.process-arrow {
    color: var(--wave-mid);
    font-size: 1.2em;
    padding: 0 10px;
}

/* Methodology Purpose */
.methodology-purpose {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: rgba(0, 0, 0, 0.3);
    padding: 18px;
    border-radius: 12px;
    margin-bottom: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.methodology-purpose:hover {
    background: rgba(156, 39, 176, 0.1);
    border-color: rgba(156, 39, 176, 0.3);
}

.methodology-purpose i {
    color: #9c27b0;
    font-size: 1.2em;
    margin-top: 3px;
}

.methodology-purpose p {
    margin: 0;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
}

.methodology-purpose strong {
    color: var(--wave-trough);
}

/* Methodology Footer */
.methodology-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 25px;
    padding: 15px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(156, 39, 176, 0.1));
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.methodology-footer i {
    color: #4CAF50;
    font-size: 1.2em;
    animation: pulse 2s infinite;
}

.methodology-footer span {
    color: white;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* Responsive */
@media (max-width: 768px) {
    .methodology-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .methodology-title h3 {
        font-size: 1.3em;
    }
    
    .process-flow {
        flex-direction: column;
        gap: 15px;
        border-radius: 20px;
        padding: 20px;
    }
    
    .process-arrow {
        transform: rotate(90deg);
        padding: 5px 0;
    }
    
    .process-step {
        width: 100%;
    }
    
    .pillar {
        flex-direction: column;
        text-align: center;
    }
    
    .pillar-icon {
        margin-bottom: 10px;
    }
    
    .methodology-stats {
        flex-direction: column;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .methodology-goal, .methodology-result {
        flex-direction: column;
        text-align: center;
    }
    
    .methodology-purpose {
        flex-direction: column;
        text-align: center;
    }
    
    .methodology-footer {
        flex-direction: column;
        text-align: center;
        border-radius: 20px;
    }
}

/* System Technical Specifications */
.tech-specs-section {
    margin-top: 40px;
    position: relative;
    overflow: hidden;
}

.tech-specs-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.03) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.tech-specs-badge {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.8), rgba(0, 212, 255, 0.2));
    border: 2px solid rgba(255, 215, 0, 0.3);
    border-radius: 50px;
    padding: 15px 30px;
    margin-bottom: 40px;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    animation: badgeGlow 3s infinite;
}

@keyframes badgeGlow {
    0%, 100% { border-color: rgba(255, 215, 0, 0.3); box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3); }
    50% { border-color: rgba(255, 215, 0, 0.8); box-shadow: 0 10px 50px rgba(255, 215, 0, 0.5); }
}

.tech-specs-badge i {
    color: gold;
    font-size: 1.8em;
    filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.5));
}

.tech-specs-badge span {
    color: white;
    font-size: 1.3em;
    font-weight: bold;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #fff, gold);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Specs Grid */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.spec-card {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.spec-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.spec-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--wave-trough);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
    background: rgba(0, 0, 0, 0.7);
}

.spec-card:hover::before {
    left: 100%;
}

.spec-card.highlight-card {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(255, 46, 99, 0.15));
    border: 2px solid rgba(0, 212, 255, 0.3);
    animation: cardPulse 2s infinite;
}

@keyframes cardPulse {
    0%, 100% { box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2); }
    50% { box-shadow: 0 20px 50px rgba(0, 212, 255, 0.4); }
}

.spec-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 0, 0, 0.5));
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2em;
    color: var(--wave-trough);
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.spec-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.spec-card:hover .spec-icon {
    transform: rotateY(180deg) scale(1.1);
    background: linear-gradient(135deg, var(--wave-trough), var(--wave-peak));
    color: white;
    border-color: transparent;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

.spec-card:hover .spec-icon::before {
    opacity: 1;
    animation: shine 1s ease;
}

@keyframes shine {
    from { transform: translate(-30%, -30%) rotate(0deg); }
    to { transform: translate(30%, 30%) rotate(180deg); }
}

.spec-content {
    flex: 1;
}

.spec-content h3 {
    color: var(--wave-trough);
    font-size: 1.1em;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.spec-card.highlight-card .spec-content h3 {
    color: gold;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.spec-value {
    color: white;
    font-size: 1.4em;
    font-weight: bold;
    margin-bottom: 5px;
    line-height: 1.3;
}

.spec-value.highlight {
    font-size: 2.2em;
    background: linear-gradient(135deg, var(--wave-trough), gold, var(--wave-peak));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: valueGlow 2s infinite;
}

@keyframes valueGlow {
    0%, 100% { text-shadow: 0 0 20px rgba(0, 212, 255, 0.5); }
    50% { text-shadow: 0 0 40px rgba(255, 215, 0, 0.8); }
}

.spec-desc {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9em;
    margin-bottom: 10px;
    line-height: 1.5;
}

.spec-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8em;
    color: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.spec-card:hover .spec-tag {
    background: rgba(0, 212, 255, 0.2);
    border-color: var(--wave-trough);
    color: white;
}

.spec-tag.confidence-high {
    background: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
    border-color: rgba(76, 175, 80, 0.3);
    animation: confidencePulse 2s infinite;
}

@keyframes confidencePulse {
    0%, 100% { box-shadow: 0 0 10px rgba(76, 175, 80, 0.3); }
    50% { box-shadow: 0 0 20px rgba(76, 175, 80, 0.6); }
}

/* Operational Integrity Card */
.integrity-card {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7), rgba(156, 39, 176, 0.2));
    border: 2px solid rgba(156, 39, 176, 0.3);
    border-radius: 30px;
    padding: 30px;
    margin-top: 40px;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.integrity-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(156, 39, 176, 0.1) 0%, transparent 70%);
    animation: rotateSlow 20s linear infinite;
}

@keyframes rotateSlow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.integrity-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    position: relative;
    z-index: 2;
}

.integrity-header i {
    font-size: 2.5em;
    color: #9c27b0;
    filter: drop-shadow(0 0 20px rgba(156, 39, 176, 0.5));
    animation: shieldPulse 2s infinite;
}

@keyframes shieldPulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 20px rgba(156, 39, 176, 0.5)); }
    50% { transform: scale(1.1); filter: drop-shadow(0 0 40px rgba(156, 39, 176, 0.8)); }
}

.integrity-header h3 {
    color: #9c27b0;
    font-size: 1.8em;
    font-weight: bold;
    text-shadow: 0 0 20px rgba(156, 39, 176, 0.5);
}

.integrity-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
    position: relative;
    z-index: 2;
    flex-wrap: wrap;
}

.integrity-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    background: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 20px;
    min-width: 180px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.integrity-item:hover {
    transform: translateY(-5px);
    border-color: #9c27b0;
    box-shadow: 0 10px 30px rgba(156, 39, 176, 0.3);
    background: rgba(0, 0, 0, 0.7);
}

.integrity-item i {
    font-size: 2em;
    color: #9c27b0;
}

.integrity-item span {
    color: white;
    font-weight: 500;
    text-align: center;
}

.integrity-arrow {
    font-size: 1.5em;
    color: rgba(255, 255, 255, 0.5);
}

.integrity-arrow i {
    animation: arrowPulse 1.5s infinite;
}

@keyframes arrowPulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 1; }
}

.integrity-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding-top: 25px;
    border-top: 2px solid rgba(156, 39, 176, 0.3);
    position: relative;
    z-index: 2;
}

.integrity-footer i {
    color: gold;
    font-size: 1.5em;
    animation: starTwinkle 2s infinite;
}

@keyframes starTwinkle {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.2); opacity: 1; }
}

.integrity-footer span {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1em;
    font-weight: 500;
    letter-spacing: 1px;
}

/* Responsive */
@media (max-width: 992px) {
    .integrity-content {
        flex-direction: column;
    }
    
    .integrity-arrow {
        transform: rotate(90deg);
    }
    
    .tech-specs-badge {
        white-space: normal;
        text-align: center;
        padding: 15px 20px;
    }
    
    .tech-specs-badge span {
        font-size: 1.1em;
    }
}

@media (max-width: 768px) {
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .spec-card {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }
    
    .spec-icon {
        margin-bottom: 15px;
    }
    
    .integrity-item {
        width: 100%;
    }
    
    .tech-specs-badge {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .integrity-content {
        gap: 10px;
    }
    
    .integrity-item {
        padding: 15px;
    }
    
    .integrity-item i {
        font-size: 1.5em;
    }
    
    .integrity-item span {
        font-size: 0.9em;
    }
    
    .integrity-footer span {
        font-size: 0.9em;
    }
}

/* Our Story Section */
.story-section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7), rgba(10, 20, 30, 0.8));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    padding: 40px;
    margin-bottom: 50px;
}

.story-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(255, 46, 99, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.story-section h2 {
    color: white;
    font-size: 2.2em;
    margin-bottom: 40px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.story-section h2 i {
    color: var(--wave-trough);
    margin-right: 15px;
    animation: pulse 2s infinite;
}

/* Timeline */
.story-timeline {
    margin: 40px 0 60px;
    padding: 20px 0;
    position: relative;
}

.timeline-track {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    padding: 20px 0;
}

.timeline-track::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--wave-trough) 0%, 
        var(--wave-mid) 50%, 
        var(--wave-peak) 100%);
    border-radius: 3px;
    z-index: 1;
}

.timeline-dot {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    text-align: center;
}

.timeline-dot .dot {
    width: 20px;
    height: 20px;
    background: white;
    border: 4px solid var(--wave-trough);
    border-radius: 50%;
    margin-bottom: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.timeline-dot:hover .dot {
    transform: scale(1.3);
    border-color: var(--wave-peak);
    box-shadow: 0 0 30px rgba(255, 46, 99, 0.8);
}

.timeline-dot .year {
    color: var(--wave-trough);
    font-weight: bold;
    font-size: 1.1em;
    margin-bottom: 5px;
}

.timeline-dot .label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9em;
    max-width: 120px;
}

/* Story Content */
.story-content {
    margin: 40px 0;
}

.story-paragraph {
    display: flex;
    gap: 25px;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.story-paragraph::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--wave-trough), var(--wave-peak));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.story-paragraph:hover {
    transform: translateX(10px);
    background: rgba(0, 0, 0, 0.5);
    border-color: rgba(0, 212, 255, 0.2);
}

.story-paragraph:hover::before {
    opacity: 1;
}

.story-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 0, 0, 0.5));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8em;
    color: var(--wave-trough);
    border: 2px solid rgba(0, 212, 255, 0.3);
    transition: all 0.4s ease;
}

.story-paragraph:hover .story-icon {
    transform: rotateY(360deg);
    background: linear-gradient(135deg, var(--wave-trough), var(--wave-peak));
    color: white;
    border-color: transparent;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

.story-text {
    flex: 1;
}

.story-text p {
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.8;
    margin-bottom: 15px;
    font-size: 1.1em;
}

.story-text strong {
    color: var(--wave-trough);
    font-weight: 700;
}

.story-text .highlight {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(255, 46, 99, 0.15));
    padding: 2px 8px;
    border-radius: 4px;
    color: white;
    font-weight: 600;
}

.story-text .emphasis {
    color: var(--wave-peak);
    font-size: 1.2em;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(255, 46, 99, 0.5);
}

/* Founder Quote */
.story-quote {
    margin: 50px 0 40px;
    padding: 40px;
    background: linear-gradient(135deg, rgba(156, 39, 176, 0.1), rgba(0, 212, 255, 0.1));
    border-radius: 30px;
    position: relative;
    border: 2px solid rgba(156, 39, 176, 0.3);
    text-align: center;
}

.story-quote::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--wave-trough), var(--wave-peak), #9c27b0);
    border-radius: 32px;
    opacity: 0.3;
    z-index: -1;
    animation: borderGlow 3s infinite;
}

@keyframes borderGlow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

.quote-icon {
    font-size: 3em;
    color: rgba(255, 255, 255, 0.2);
    position: absolute;
    top: 20px;
    left: 20px;
}

.story-quote blockquote {
    color: white;
    font-size: 1.5em;
    line-height: 1.6;
    font-style: italic;
    margin: 20px 0;
    position: relative;
    z-index: 2;
    font-weight: 400;
}

.quote-author {
    margin-top: 20px;
}

.author-name {
    display: block;
    color: var(--wave-trough);
    font-size: 1.2em;
    font-weight: bold;
    margin-bottom: 5px;
}

.author-title {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
}

/* Stats Summary */
.story-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
    padding: 30px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.story-stat {
    text-align: center;
    padding: 20px;
    transition: all 0.3s ease;
}

.story-stat:hover {
    transform: translateY(-5px);
}

.story-stat .stat-value {
    display: block;
    font-size: 2.5em;
    font-weight: 900;
    background: linear-gradient(135deg, var(--wave-trough), var(--wave-peak));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 10px;
    line-height: 1.2;
}

.story-stat .stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95em;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.highlight-stat .stat-value {
    font-size: 3em;
    background: linear-gradient(135deg, gold, #ff9800);
    -webkit-background-clip: text;
    background-clip: text;
    animation: statPulse 2s infinite;
}

@keyframes statPulse {
    0%, 100% { text-shadow: 0 0 20px rgba(255, 215, 0, 0.5); }
    50% { text-shadow: 0 0 40px rgba(255, 215, 0, 0.8); }
}

/* Fade In Animation */
.fade-in {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.story-paragraph:nth-child(1) { animation-delay: 0.2s; }
.story-paragraph:nth-child(2) { animation-delay: 0.4s; }
.story-paragraph:nth-child(3) { animation-delay: 0.6s; }
.story-paragraph:nth-child(4) { animation-delay: 0.8s; }
.story-paragraph:nth-child(5) { animation-delay: 1.0s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 992px) {
    .story-section {
        padding: 30px;
    }
    
    .story-section h2 {
        font-size: 1.8em;
    }
    
    .story-quote blockquote {
        font-size: 1.3em;
    }
}

@media (max-width: 768px) {
    .timeline-track {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 30px;
    }
    
    .timeline-track::before {
        top: 0;
        bottom: 0;
        left: 15px;
        width: 3px;
        height: auto;
    }
    
    .timeline-dot {
        flex-direction: row;
        gap: 20px;
        margin-bottom: 30px;
        width: 100%;
    }
    
    .timeline-dot .dot {
        margin-bottom: 0;
    }
    
    .story-paragraph {
        flex-direction: column;
        text-align: center;
    }
    
    .story-icon {
        margin: 0 auto;
    }
    
    .story-paragraph:hover {
        transform: translateY(-5px);
    }
    
    .story-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .story-section {
        padding: 20px;
    }
    
    .story-section h2 {
        font-size: 1.5em;
    }
    
    .story-quote blockquote {
        font-size: 1.1em;
    }
    
    .story-text p {
        font-size: 0.95em;
    }
}
/* ===== EXPERT VALIDATION SECTION ===== */
/* ===== EXPERT VALIDATION SECTION ===== */
.validation-section {
    margin-top: 3rem;
}

.validation-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.validation-highlight {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    background: rgba(0, 212, 255, 0.03);
    padding: 1.2rem;
    border-radius: 12px;
    border-left: 3px solid var(--primary-cyan, #00d4ff);
    transition: transform 0.2s ease, background 0.2s ease;
}

.validation-highlight:hover {
    background: rgba(0, 212, 255, 0.08);
    transform: translateX(5px);
}

.validation-highlight i {
    font-size: 1.8rem;
    color: var(--primary-cyan, #00d4ff);
    min-width: 2rem;
    text-align: center;
    margin-top: 0.2rem;
}

.validation-highlight strong {
    color: var(--primary-cyan, #00d4ff);
    font-weight: 600;
}

.validation-highlight .highlight {
    color: #ffd966;
    font-weight: 500;
}

.validation-highlight .emphasis {
    color: var(--primary-cyan, #00d4ff);
    font-weight: 700;
    font-size: 1.1em;
}

/* Quote block */
.validation-quote {
    background: rgba(0, 212, 255, 0.05);
    border-radius: 16px;
    padding: 2rem 2rem 1.5rem;
    margin: 1rem 0;
    position: relative;
    border: 1px solid rgba(0, 212, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.validation-quote i.fa-quote-left {
    font-size: 2.5rem;
    color: var(--primary-cyan, #00d4ff);
    opacity: 0.3;
    position: absolute;
    top: 1rem;
    left: 1.5rem;
}

.validation-quote blockquote {
    font-size: 1.3rem;
    font-weight: 400;
    font-style: italic;
    line-height: 1.6;
    color: #fff;
    margin: 0 0 1rem 2rem;
    padding-left: 1rem;
    border-left: 3px solid var(--primary-cyan, #00d4ff);
}

.validation-quote .quote-author {
    text-align: right;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    padding-right: 1rem;
    border-top: 1px dashed rgba(0, 212, 255, 0.3);
    padding-top: 1rem;
    margin-top: 1rem;
}

/* Conclusion paragraph */
.validation-conclusion {
    background: linear-gradient(145deg, rgba(10, 20, 30, 0.7), rgba(0, 20, 30, 0.9));
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 215, 0, 0.2);
    margin: 0.5rem 0;
}

.validation-conclusion p {
    margin-bottom: 0.8rem;
}

.validation-conclusion p:last-child {
    margin-bottom: 0;
}

.validation-conclusion strong {
    color: #ffd966;
}

/* ===== VALIDATION BUTTONS (MỚI) ===== */
/* ===== VALIDATION BUTTONS - ĐỒNG BỘ HOÀN TOÀN ===== */
.validation-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 2rem 0 1rem;
    flex-wrap: wrap;
}

/* Base style cho cả 2 nút - GIỐNG NHAU HOÀN TOÀN */
.validation-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: 0.5px;
    min-width: 320px; /* Tăng lên 320px để chứa text dài */
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.validation-btn i {
    font-size: 1.3rem;
    flex-shrink: 0; /* Giữ icon không bị co */
}

.validation-btn span {
    line-height: 1.4;
    white-space: nowrap; /* Không xuống dòng */
}

/* PDF Button - Màu xanh cyan */
.pdf-btn {
    background: linear-gradient(135deg, #00d4ff, #0066ff);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

.pdf-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.7);
    background: linear-gradient(135deg, #00e5ff, #0077ff);
    color: #000;
}

/* Signals Button - Màu cam/gold */
.signals-btn {
    background: linear-gradient(135deg, #ffd966, #ff9900);
    color: #000;
    box-shadow: 0 0 20px rgba(255, 153, 0, 0.4);
}

.signals-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 153, 0, 0.7);
    background: linear-gradient(135deg, #ffe07a, #ffaa22);
    color: #000;
}

.validation-btn:active {
    transform: translateY(0);
}

/* Responsive cho màn hình vừa */
@media (max-width: 992px) {
    .validation-btn {
        min-width: 280px; /* Giảm xuống cho màn hình nhỏ hơn */
        font-size: 1rem;
        padding: 0.9rem 1.5rem;
    }
}

/* Responsive cho mobile */
@media (max-width: 768px) {
    .validation-buttons {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .validation-btn {
        width: 100%;
        min-width: auto; /* Bỏ min-width trên mobile */
        padding: 0.9rem 1.5rem;
        font-size: 1rem;
        justify-content: center;
    }
    
    .validation-btn span {
        white-space: normal; /* Cho phép xuống dòng trên mobile */
    }
}

/* Màn hình rất nhỏ */
@media (max-width: 480px) {
    .validation-btn {
        font-size: 0.9rem;
        padding: 0.8rem 1rem;
    }
    
    .validation-btn i {
        font-size: 1.1rem;
    }
}