/* ==========================================================================
   Modern Homepage Styles - TechTeo
   ========================================================================== */

/* CSS Variables */
:root {
    /* Colors - Purple & Blue Theme */
    --hero-gradient-start: #667eea;
    --hero-gradient-end: #764ba2;
    --accent-gradient-start: #f093fb;
    --accent-gradient-end: #f5576c;
    
    /* Neutrals */
    --neutral-50: #f8f9fa;
    --neutral-100: #f1f3f5;
    --neutral-200: #e9ecef;
    --neutral-300: #dee2e6;
    --neutral-700: #495057;
    --neutral-800: #343a40;
    --neutral-900: #212529;
    
    /* Typography */
    --text-primary: #1a202c;
    --text-secondary: #718096;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 50px rgba(0,0,0,0.15);
    --shadow-xl: 0 30px 60px rgba(0,0,0,0.2);
    
    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    --transition-bounce: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Spacing */
    --section-padding: 5rem 0;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-modern {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--hero-gradient-start) 0%, var(--hero-gradient-end) 100%);
    padding: 6rem 0 4rem;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s ease-in-out infinite;
}

.hero-shape-1 {
    width: 400px;
    height: 400px;
    background: white;
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.hero-shape-2 {
    width: 300px;
    height: 300px;
    background: white;
    bottom: -50px;
    left: -50px;
    animation-delay: 3s;
}

.hero-shape-3 {
    width: 200px;
    height: 200px;
    background: white;
    top: 50%;
    left: 20%;
    animation-delay: 6s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-30px) rotate(5deg); }
    50% { transform: translateY(-60px) rotate(-5deg); }
    75% { transform: translateY(-30px) rotate(3deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0,0,0,0.2);
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.btn-hero-primary,
.btn-hero-secondary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-smooth);
    border: 2px solid white;
}

.btn-hero-primary {
    background: white;
    color: var(--hero-gradient-start);
    box-shadow: 0 10px 30px rgba(255,255,255,0.3);
}

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(255,255,255,0.4);
    color: var(--hero-gradient-end);
}

.btn-hero-secondary {
    background: transparent;
    color: white;
}

.btn-hero-secondary:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-3px);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 3rem;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: white;
}

.stat-item p {
    font-size: 1rem;
    opacity: 0.9;
    margin: 0;
    color: white;
}

/* Hero Image */
.hero-image {
    position: relative;
    z-index: 2;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
    animation: floatingImage 6s ease-in-out infinite;
}

@keyframes floatingImage {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

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

/* ==========================================================================
   Course Cards Modern Design
   ========================================================================== */

.courses-section {
    padding: var(--section-padding);
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.course-card-modern {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.course-card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--hero-gradient-start), var(--hero-gradient-end));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
    z-index: 10;
}

.course-card-modern:hover::before {
    transform: scaleX(1);
}

.course-card-modern:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.course-card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--neutral-200);
}

.course-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.course-card-modern:hover .course-card-image img {
    transform: scale(1.1);
}

.course-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--hero-gradient-start);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    z-index: 5;
}

.course-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent, rgba(0,0,0,0.7));
    display: flex;
    align-items: flex-end;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    padding: 1.5rem;
}

.course-card-modern:hover .course-overlay {
    opacity: 1;
}

.quick-view-btn {
    background: white;
    color: var(--hero-gradient-start);
    padding: 0.7rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
    transform: translateY(20px);
}

.course-card-modern:hover .quick-view-btn {
    transform: translateY(0);
}

.quick-view-btn:hover {
    background: var(--hero-gradient-start);
    color: white;
}

.course-card-body {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.course-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.course-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--neutral-200);
}

.instructor {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.instructor-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--neutral-200);
}

.instructor span {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.rating {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.rating i {
    color: #fbbf24;
    font-size: 0.9rem;
}

.rating span {
    font-weight: 600;
    color: var(--text-primary);
}

.course-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.course-price {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--hero-gradient-start);
    background: linear-gradient(135deg, var(--hero-gradient-start), var(--hero-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-enroll {
    background: linear-gradient(135deg, var(--hero-gradient-start), var(--hero-gradient-end));
    color: white;
    padding: 0.7rem 1.8rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-enroll:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    color: white;
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.features-section {
    padding: var(--section-padding);
    background: var(--neutral-50);
}

.feature-card-modern {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
    height: 100%;
}

.feature-card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

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

.feature-card-modern:hover {
    border-color: var(--hero-gradient-start);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon-wrapper {
    position: relative;
    margin-bottom: 1.5rem;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--hero-gradient-start), var(--hero-gradient-end));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    transition: transform 0.3s ease;
    position: relative;
    z-index: 2;
}

.feature-card-modern:hover .feature-icon {
    transform: rotate(10deg) scale(1.1);
}

.feature-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(102,126,234,0.3), transparent);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card-modern:hover .feature-glow {
    opacity: 1;
}

.feature-card-modern h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-card-modern p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.feature-link {
    color: var(--hero-gradient-start);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s ease;
}

.feature-link:hover {
    gap: 1rem;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--hero-gradient-start), var(--hero-gradient-end));
}

.cta-wrapper {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    border: 1px solid rgba(255,255,255,0.2);
}

.cta-wrapper h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
}

.cta-wrapper p {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.9);
    margin: 0;
}

.btn-cta {
    background: white;
    color: var(--hero-gradient-start);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    transition: var(--transition-smooth);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.3);
    gap: 1.2rem;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 991px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-item h3 {
        font-size: 2rem;
    }
    
    .hero-image {
        margin-top: 3rem;
    }
}

@media (max-width: 767px) {
    .hero-modern {
        min-height: auto;
        padding: 4rem 0 3rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn-hero-primary,
    .btn-hero-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .cta-wrapper {
        padding: 2rem;
        text-align: center;
    }
    
    .cta-wrapper h2 {
        font-size: 1.8rem;
    }
    
    .cta-wrapper p {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.gradient-text {
    background: linear-gradient(135deg, var(--hero-gradient-start), var(--hero-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-accent {
    background: linear-gradient(135deg, var(--accent-gradient-start), var(--accent-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}