/**
 * AI Features Showcase Section Styles
 * GlobalStudyLab - Modern AI Features Display
 *
 * @package    local_gsl_core
 * @copyright  2025 GlobalStudyLab
 * @license    MIT
 */

/* ============================================
   BASE SECTION STYLES
   ============================================ */

.gsl-ai-features {
    position: relative;
    padding: 80px 20px;
    background: linear-gradient(135deg, #0066cc 0%, #00a8e8 100%);
    overflow: hidden;
}

/* Animated background gradient */
.gsl-ai-features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 200, 255, 0.2) 0%, transparent 50%);
    animation: backgroundShift 15s ease-in-out infinite;
    pointer-events: none;
}

@keyframes backgroundShift {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, 20px) scale(1.05); }
}

.gsl-ai-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    z-index: 1;
}

/* ============================================
   HEADER STYLES
   ============================================ */

.gsl-ai-header {
    text-align: center;
    margin-bottom: 60px;
    animation: fadeInDown 0.8s ease-out;
}

.gsl-ai-heading {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: #ffffff;
    margin: 0 0 16px 0;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
    line-height: 1.2;
}

.gsl-ai-subheading {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   FEATURES GRID
   ============================================ */

.gsl-ai-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

/* ============================================
   FEATURE CARDS
   ============================================ */

.gsl-ai-card {
    position: relative;
    height: 100%;
    animation: fadeInUp 0.8s ease-out backwards;
}

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

.gsl-ai-card__inner {
    position: relative;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px 30px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.gsl-ai-card__inner:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 1);
}

/* Glow effect on hover */
.gsl-ai-card__glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 0%, rgba(0, 168, 232, 0.15), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    border-radius: 20px;
}

.gsl-ai-card__inner:hover .gsl-ai-card__glow {
    opacity: 1;
}

/* ============================================
   CARD ICON STYLES
   ============================================ */

.gsl-ai-card__icon-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.gsl-ai-card__icon {
    width: 64px;
    height: 64px;
    color: #0066cc;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.gsl-ai-card__inner:hover .gsl-ai-card__icon {
    transform: scale(1.1) rotate(5deg);
}

/* Feature-specific icon colors */
.gsl-ai-card[data-feature="recommendations"] .gsl-ai-card__icon {
    color: #0066cc;
}

.gsl-ai-card[data-feature="assistant"] .gsl-ai-card__icon {
    color: #00a8e8;
}

.gsl-ai-card[data-feature="adaptive"] .gsl-ai-card__icon {
    color: #00c896;
}

.gsl-ai-card[data-feature="assessments"] .gsl-ai-card__icon {
    color: #6a3de8;
}

/* ============================================
   CARD CONTENT STYLES
   ============================================ */

.gsl-ai-card__content {
    position: relative;
    z-index: 1;
}

.gsl-ai-card__title {
    font-size: 1.375rem;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 16px 0;
    line-height: 1.3;
    display: flex;
    align-items: center;
    gap: 12px;
}

.gsl-ai-card__emoji {
    font-size: 1.5rem;
    line-height: 1;
}

.gsl-ai-card__description {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: #4a4a4a;
    margin: 0 0 20px 0;
}

/* ============================================
   FEATURE HIGHLIGHTS
   ============================================ */

.gsl-ai-card__highlights {
    list-style: none;
    padding: 0;
    margin: 0;
}

.gsl-ai-card__highlight {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: #666;
    margin-bottom: 8px;
    padding: 8px 0;
}

.gsl-ai-card__highlight:last-child {
    margin-bottom: 0;
}

.gsl-ai-card__highlight svg {
    flex-shrink: 0;
    color: #00c896;
    width: 16px;
    height: 16px;
}

/* ============================================
   CTA SECTION
   ============================================ */

.gsl-ai-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    animation: fadeInUp 0.8s ease-out 0.5s backwards;
}

.gsl-ai-cta__content {
    max-width: 600px;
}

.gsl-ai-cta__title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 12px 0;
    line-height: 1.3;
}

.gsl-ai-cta__description {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
    line-height: 1.5;
}

.gsl-ai-cta__button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 36px;
    background: #ffffff;
    color: #0066cc;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.gsl-ai-cta__button:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    color: #0066cc;
    text-decoration: none;
}

.gsl-ai-cta__button svg {
    transition: transform 0.3s ease;
}

.gsl-ai-cta__button:hover svg {
    transform: translateX(4px);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@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);
    }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (min-width: 768px) {
    .gsl-ai-features {
        padding: 100px 40px;
    }

    .gsl-ai-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .gsl-ai-cta {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        padding: 50px 60px;
    }
}

@media (min-width: 1024px) {
    .gsl-ai-features {
        padding: 120px 60px;
    }

    .gsl-ai-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Focus styles for keyboard navigation */
.gsl-ai-cta__button:focus {
    outline: 3px solid rgba(255, 255, 255, 0.8);
    outline-offset: 4px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .gsl-ai-features::before,
    .gsl-ai-card,
    .gsl-ai-header,
    .gsl-ai-cta {
        animation: none;
    }

    .gsl-ai-card__inner,
    .gsl-ai-card__icon,
    .gsl-ai-cta__button {
        transition: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .gsl-ai-card__inner {
        border: 2px solid #000;
    }

    .gsl-ai-cta {
        border: 3px solid #fff;
    }
}

/* Dark mode support (if applicable) */
@media (prefers-color-scheme: dark) {
    .gsl-ai-card__inner {
        background: rgba(30, 30, 30, 0.95);
    }

    .gsl-ai-card__title {
        color: #ffffff;
    }

    .gsl-ai-card__description {
        color: rgba(255, 255, 255, 0.8);
    }

    .gsl-ai-card__highlight {
        color: rgba(255, 255, 255, 0.7);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .gsl-ai-features {
        background: #fff;
        padding: 40px 20px;
    }

    .gsl-ai-features::before {
        display: none;
    }

    .gsl-ai-cta {
        display: none;
    }

    .gsl-ai-card__inner {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}