/* ========================================
   HERO INTRO SECTION - Stunning Design
   ======================================== */

.hero-intro {
    position: relative;
    padding: 8rem 2rem 6rem;
    /* Ensure hero content starts below the fixed header across breakpoints */
    padding-top: calc(var(--fixed-header-height, 80px) + 3rem);
    overflow: hidden;
    background: linear-gradient(180deg, rgba(0, 20, 40, 0.9) 0%, var(--primary-bg) 100%);
}

/* Background Effects */
.hero-intro-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

/* Animated Particles */
.intro-particle {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.15;
}

.intro-particle-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-primary), transparent);
    top: -100px;
    left: -100px;
    animation: particleFloat1 20s ease-in-out infinite;
}

.intro-particle-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-secondary), transparent);
    top: 50%;
    right: -150px;
    animation: particleFloat2 25s ease-in-out infinite;
}

.intro-particle-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--accent-tertiary), transparent);
    bottom: -100px;
    left: 40%;
    animation: particleFloat3 18s ease-in-out infinite;
}

@keyframes particleFloat1 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.15;
    }
    50% {
        transform: translate(100px, 50px) scale(1.2);
        opacity: 0.25;
    }
}

@keyframes particleFloat2 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.15;
    }
    50% {
        transform: translate(-80px, -60px) scale(1.15);
        opacity: 0.3;
    }
}

@keyframes particleFloat3 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.15;
    }
    50% {
        transform: translate(-60px, 40px) scale(1.1);
        opacity: 0.25;
    }
}

/* Animated Grid Background */
.intro-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    opacity: 0.5;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

/* Content Container */
.hero-intro-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

/* Badge */
.intro-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1.8rem;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.25);
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--accent-primary);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    animation: fadeInDown 0.8s ease-out;
}

.intro-badge::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transform: translate(-50%, -50%) rotate(0deg);
    animation: badgeShine 3s linear infinite;
}

@keyframes badgeShine {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.badge-pulse {
    position: absolute;
    left: 1rem;
    width: 8px;
    height: 8px;
    background: var(--accent-secondary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.5;
    }
}

.badge-text {
    position: relative;
    z-index: 1;
}

/* Title */
.intro-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.gradient-text-animated {
    display: inline-block;
    background: linear-gradient(
        135deg,
        var(--accent-primary),
        var(--accent-secondary),
        var(--accent-tertiary),
        var(--accent-primary)
    );
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientFlow 6s ease infinite;
}

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

/* Description */
.intro-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 3rem;
    animation: fadeInUp 0.8s ease-out 0.3s backwards;
}

/* Stats Cards */
.intro-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto 3rem;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(0, 255, 136, 0.05));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-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 0.5s ease;
}

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

.stat-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.2);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 255, 136, 0.1));
}

.stat-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
    animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

.stat-content {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* Features */
.intro-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.5s backwards;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 1.8rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.2), transparent);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    border-radius: 50%;
}

.feature-item:hover::before {
    width: 300px;
    height: 300px;
}

.feature-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.feature-icon {
    font-size: 1.3rem;
    position: relative;
    z-index: 1;
    animation: featureIconSpin 10s linear infinite;
}

@keyframes featureIconSpin {
    0%, 90% {
        transform: rotate(0deg);
    }
    95%, 100% {
        transform: rotate(360deg);
    }
}

.feature-item span {
    position: relative;
    z-index: 1;
    font-weight: 500;
}

/* Animation Keyframes */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Scroll-triggered animations */
[data-intro-animate] {
    opacity: 0;
}

[data-intro-animate].animated {
    animation-duration: 0.8s;
    animation-fill-mode: both;
}

[data-intro-animate="fade-up"].animated {
    animation-name: fadeInUp;
}

[data-intro-animate="fade-down"].animated {
    animation-name: fadeInDown;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-intro {
        padding: 0 1.5rem 4rem;
        padding-top: calc(var(--fixed-header-height, 140px) + 2rem);
    }
    
    .intro-title {
        font-size: 2.5rem;
    }
    
    .intro-description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .intro-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-card {
        padding: 1.5rem;
    }
    
    .stat-icon {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .intro-features {
        gap: 1rem;
    }
    
    .feature-item {
        padding: 0.8rem 1.5rem;
        font-size: 0.85rem;
    }
    
    .intro-particle {
        filter: blur(40px);
    }
}

@media (max-width: 480px) {
    .hero-intro {
        padding: 0 1rem 3rem;
        padding-top: calc(var(--fixed-header-height, 160px) + 1.5rem);
    }
    
    .intro-badge {
        font-size: 0.85rem;
        padding: 0.7rem 1.5rem;
    }
    
    .intro-title {
        font-size: 2rem;
    }
    
    .intro-features {
        flex-direction: column;
        align-items: stretch;
    }
    
    .feature-item {
        justify-content: center;
    }
    
    .stat-card {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .intro-particle,
    .intro-grid,
    .intro-badge::before,
    .badge-pulse,
    .gradient-text-animated,
    .stat-icon,
    .feature-icon {
        animation: none !important;
    }
    
    .stat-card:hover,
    .feature-item:hover {
        transform: none;
    }
}

/* Loading State */
.hero-intro.loading {
    opacity: 0;
}

.hero-intro.loaded {
    opacity: 1;
    transition: opacity 0.5s ease;
}