/* ============================================
   GKM DESIGN SYSTEM — Formation Conception Mécanique
   ============================================ */

/* === CSS VARIABLES (Charte GKM) === */
:root {
    /* Couleurs Principales */
    --gkm-blue-primary: #00a8e8;
    --gkm-blue-dark: #003459;
    --gkm-blue-darker: #002340;
    --gkm-pink-accent: #ff3860;
    --gkm-gray-bg: #f5f7fa;
    --gkm-white: #ffffff;

    /* Couleurs Système */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Texte */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --text-light: #d1d5db;
    --text-on-dark: #ffffff;
    --text-on-dark-muted: rgba(255, 255, 255, 0.75);

    /* Dégradés */
    --gradient-main: linear-gradient(135deg, #00a8e8 0%, #003459 100%);
    --gradient-hero: linear-gradient(160deg, #001f3f 0%, #003459 40%, #00507a 100%);
    --gradient-progress: linear-gradient(to right, #00a8e8, #003459);
    --gradient-warning: linear-gradient(135deg, #ff3860 0%, #e02a4f 100%);
    --gradient-card-hover: linear-gradient(135deg, rgba(0, 168, 232, 0.08), rgba(0, 52, 89, 0.04));
    --gradient-text-light: linear-gradient(135deg, #ffffff 0%, #5dd8ff 50%, #00cfff 100%);

    /* Ombres */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 24px rgba(0, 168, 232, 0.25);

    /* Bordures */
    --border-light: 1px solid #e5e7eb;
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 50%;

    /* Espacements */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* Typographie */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Inter', sans-serif;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Layout */
    --container-max: 1200px;
    --container-wide: 1400px;
    --navbar-height: 72px;
}

/* === RESET === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--gkm-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul,
ol {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* === UTILITIES === */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-wide {
    max-width: var(--container-wide);
}

.section {
    padding: var(--space-4xl) 0;
}

.section-dark {
    background: var(--gkm-blue-dark);
    color: var(--text-on-dark);
}

.section-gray {
    background: var(--gkm-gray-bg);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gkm-blue-primary);
    margin-bottom: var(--space-md);
    padding: 6px 16px;
    background: rgba(0, 168, 232, 0.1);
    border-radius: var(--border-radius-xl);
}

.section-dark .section-label {
    background: rgba(0, 168, 232, 0.2);
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.section-dark .section-title {
    color: var(--text-on-dark);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.section-dark .section-subtitle {
    color: var(--text-on-dark-muted);
}

.text-gradient {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-light {
    background: var(--gradient-text-light);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Auto-switch to light gradient on dark backgrounds */
.page-header .text-gradient,
.hero .text-gradient,
.section-dark .text-gradient,
.cta-section .text-gradient {
    background: var(--gradient-text-light);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* === TYPOGRAPHY === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(32px, 5vw, 56px);
}

h2 {
    font-size: clamp(28px, 4vw, 42px);
}

h3 {
    font-size: clamp(20px, 3vw, 28px);
}

h4 {
    font-size: 20px;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-main);
    color: var(--text-on-dark);
    box-shadow: 0 4px 16px rgba(0, 168, 232, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 168, 232, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--gkm-blue-primary);
    border: 2px solid var(--gkm-blue-primary);
}

.btn-secondary:hover {
    background: var(--gkm-blue-primary);
    color: var(--text-on-dark);
    transform: translateY(-2px);
}

.btn-white {
    background: var(--gkm-white);
    color: var(--gkm-blue-dark);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-on-dark);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}

.btn-lg {
    padding: 18px 40px;
    font-size: 18px;
}

.btn-icon {
    font-size: 18px;
}

/* === NAVBAR === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: var(--border-light);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 24px;
    font-weight: 800;
    color: var(--gkm-blue-dark);
}

.navbar-brand span {
    color: var(--gkm-blue-primary);
}

.navbar-logo-img {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    object-fit: contain;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.navbar-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 6px 0;
}

.navbar-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gkm-blue-primary);
    transition: width var(--transition-base);
}

.navbar-links a:hover {
    color: var(--gkm-blue-primary);
}

.navbar-links a:hover::after {
    width: 100%;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.navbar-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* === HERO === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding-top: var(--navbar-height);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 168, 232, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 168, 232, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.hero-grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
}

.hero-content {
    color: var(--text-on-dark);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 20px;
    background: rgba(0, 168, 232, 0.15);
    border: 1px solid rgba(0, 168, 232, 0.3);
    border-radius: var(--border-radius-xl);
    font-size: 14px;
    font-weight: 600;
    color: var(--gkm-blue-primary);
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: clamp(36px, 5vw, 58px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.hero-title .highlight {
    color: var(--gkm-blue-primary);
}

.hero-description {
    font-size: 18px;
    color: var(--text-on-dark-muted);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
    max-width: 520px;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
}

.hero-stat {
    text-align: left;
}

.hero-stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--gkm-blue-primary);
}

.hero-stat-label {
    font-size: 14px;
    color: var(--text-on-dark-muted);
}

.hero-media {
    position: relative;
}

.hero-image-placeholder {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, rgba(0, 168, 232, 0.2), rgba(0, 52, 89, 0.3));
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.hero-image-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(0, 168, 232, 0.1), transparent, transparent);
    animation: rotate-glow 8s linear infinite;
}

@keyframes rotate-glow {
    to {
        transform: rotate(360deg);
    }
}

.hero-floating-badge {
    position: absolute;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    animation: float 3s ease-in-out infinite;
}

.hero-floating-badge.badge-top-right {
    top: 15%;
    right: -10%;
    animation-delay: 0s;
}

.hero-floating-badge.badge-bottom-left {
    bottom: 20%;
    left: -5%;
    animation-delay: 1.5s;
}

.hero-floating-badge.badge-top-left {
    top: 5%;
    left: -8%;
    animation-delay: 0.8s;
}

.hero-floating-badge.badge-bottom-right {
    bottom: 8%;
    right: -8%;
    animation-delay: 2.2s;
}

.hero-floating-badge .badge-icon {
    font-size: 24px;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* === SOFTWARE LOGOS BAR === */
.software-bar {
    padding: var(--space-2xl) 0;
    background: var(--gkm-white);
    border-bottom: var(--border-light);
}

.software-bar-title {
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: var(--space-xl);
}

.software-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-lg);
}

.software-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px 20px;
    background: var(--gkm-gray-bg);
    border-radius: var(--border-radius-xl);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.software-item:hover {
    background: var(--gkm-white);
    border-color: var(--gkm-blue-primary);
    color: var(--gkm-blue-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.software-item .sw-logo {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 4px;
    flex-shrink: 0;
}

/* === USP CARDS === */
.usp-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.usp-card {
    background: var(--gkm-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    border: var(--border-light);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.usp-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-main);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.usp-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.usp-icon {
    width: 56px;
    height: 56px;
    background: rgba(0, 168, 232, 0.1);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: var(--space-lg);
}

.usp-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.usp-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === COURSE CARDS === */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.course-card {
    background: var(--gkm-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: var(--border-light);
    transition: all var(--transition-base);
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.course-image {
    width: 100%;
    height: 200px;
    background: var(--gradient-card-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    position: relative;
    overflow: hidden;
}

.course-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(to top, var(--gkm-white), transparent);
}

.course-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: 4px 12px;
    border-radius: var(--border-radius-xl);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-badge.beginner {
    background: #d1fae5;
    color: #065f46;
}

.course-badge.advanced {
    background: #e0f7ff;
    color: #003459;
}

.course-badge.expert {
    background: #fef3c7;
    color: #92400e;
}

.course-badge.new {
    background: var(--gkm-pink-accent);
    color: white;
}

.course-body {
    padding: var(--space-lg);
}

.course-software {
    font-size: 13px;
    font-weight: 600;
    color: var(--gkm-blue-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-sm);
}

.course-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.course-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: 13px;
    color: var(--text-muted);
}

.course-meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.course-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-md);
    border-top: var(--border-light);
}

.course-price {
    font-size: 22px;
    font-weight: 800;
    color: var(--gkm-blue-dark);
}

.course-price-old {
    font-size: 14px;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-right: var(--space-sm);
}

.course-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--gkm-blue-primary);
    display: flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition-base);
}

.course-link:hover {
    gap: 8px;
}

/* === STATS SECTION === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.stat-card {
    text-align: center;
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
}

.stat-number {
    font-size: clamp(36px, 4vw, 52px);
    font-weight: 800;
    color: var(--gkm-blue-primary);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.stat-label {
    font-size: 16px;
    color: var(--text-on-dark-muted);
}

/* === TESTIMONIALS === */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.testimonial-card {
    background: var(--gkm-white);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl);
    border: var(--border-light);
    transition: all var(--transition-base);
    position: relative;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.testimonial-quote-icon {
    font-size: 40px;
    color: var(--gkm-blue-primary);
    opacity: 0.3;
    margin-bottom: var(--space-md);
    line-height: 1;
}

.testimonial-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-full);
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 18px;
}

.testimonial-name {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 15px;
}

.testimonial-role {
    font-size: 13px;
    color: var(--text-muted);
}

.testimonial-stars {
    color: var(--warning);
    font-size: 14px;
    margin-bottom: var(--space-md);
    letter-spacing: 2px;
}

/* === FAQ === */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: var(--border-light);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--space-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--gkm-blue-primary);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-lg);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--gkm-blue-primary);
}

.faq-toggle {
    font-size: 20px;
    color: var(--gkm-blue-primary);
    transition: transform var(--transition-base);
    flex-shrink: 0;
    margin-left: var(--space-md);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 var(--space-lg) var(--space-lg);
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* === CTA SECTION === */
.cta-section {
    background: var(--gradient-hero);
    text-align: center;
    padding: var(--space-4xl) 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(0, 168, 232, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(0, 168, 232, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.cta-section .container {
    position: relative;
    z-index: 2;
}

.cta-section h2 {
    color: var(--text-on-dark);
    margin-bottom: var(--space-md);
}

.cta-section p {
    color: var(--text-on-dark-muted);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.cta-form {
    display: flex;
    gap: var(--space-md);
    max-width: 500px;
    margin: 0 auto;
}

.cta-input {
    flex: 1;
    padding: 14px 20px;
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-on-dark);
    font-size: 16px;
    font-family: var(--font-primary);
    backdrop-filter: blur(8px);
    transition: all var(--transition-base);
}

.cta-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.cta-input:focus {
    outline: none;
    border-color: var(--gkm-blue-primary);
    background: rgba(255, 255, 255, 0.15);
}

/* === FOOTER === */
.footer {
    background: var(--gkm-blue-darker);
    color: var(--text-on-dark);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: var(--space-md);
}

.footer-brand span {
    color: var(--gkm-blue-primary);
}

.footer-description {
    font-size: 15px;
    color: var(--text-on-dark-muted);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.footer-socials {
    display: flex;
    gap: var(--space-md);
}

.footer-social-link {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-on-dark-muted);
    transition: all var(--transition-base);
}

.footer-social-link:hover {
    background: var(--gkm-blue-primary);
    color: var(--text-on-dark);
    transform: translateY(-2px);
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-on-dark);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-col a {
    font-size: 14px;
    color: var(--text-on-dark-muted);
    padding: 4px 0;
    transition: all var(--transition-fast);
}

.footer-col a:hover {
    color: var(--gkm-blue-primary);
    padding-left: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: var(--text-on-dark-muted);
}

.footer-bottom-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-bottom-links a {
    color: var(--text-on-dark-muted);
}

.footer-bottom-links a:hover {
    color: var(--gkm-blue-primary);
}

/* === ANIMATIONS === */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === RESPONSIVE === */

/* Tablette */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-media {
        max-width: 500px;
        margin: 0 auto;
    }

    .usp-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .navbar-links {
        display: none;
        position: fixed;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: var(--gkm-white);
        flex-direction: column;
        padding: var(--space-lg);
        gap: var(--space-md);
        box-shadow: var(--shadow-lg);
        border-top: var(--border-light);
    }

    .navbar-links.active {
        display: flex;
    }

    .navbar-toggle {
        display: flex;
    }

    .navbar-actions .btn {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: calc(var(--navbar-height) + var(--space-2xl)) 0 var(--space-2xl);
    }

    .hero-floating-badge {
        display: none;
    }

    .hero-stats {
        gap: var(--space-lg);
    }

    .usp-grid {
        grid-template-columns: 1fr;
    }

    .courses-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .cta-form {
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .section {
        padding: var(--space-3xl) 0;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .software-grid {
        gap: var(--space-sm);
    }

    .software-item {
        padding: 8px 14px;
        font-size: 12px;
    }
}

/* ============================================
   PAGE HEADER & BREADCRUMB
   ============================================ */
.page-header {
    background: var(--gradient-hero);
    padding: calc(var(--navbar-height) + var(--space-3xl)) 0 var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 168, 232, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 168, 232, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    color: var(--text-on-dark);
    margin-bottom: var(--space-md);
}

.page-header p {
    color: var(--text-on-dark-muted);
    font-size: 18px;
    max-width: 600px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 14px;
    color: var(--text-on-dark-muted);
    margin-bottom: var(--space-lg);
}

.breadcrumb a {
    color: var(--gkm-blue-primary);
    transition: opacity var(--transition-fast);
}

.breadcrumb a:hover {
    opacity: 0.8;
}

.breadcrumb .separator {
    opacity: 0.5;
}

/* ============================================
   CATALOGUE PAGE
   ============================================ */
.catalog-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-xl);
    align-items: start;
}

/* Sidebar Filters */
.catalog-sidebar {
    position: sticky;
    top: calc(var(--navbar-height) + var(--space-lg));
    background: var(--gkm-white);
    border-radius: var(--border-radius-lg);
    border: var(--border-light);
    padding: var(--space-lg);
    max-height: calc(100vh - var(--navbar-height) - 48px);
    overflow-y: auto;
}

.filter-search {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    border: var(--border-light);
    font-size: 14px;
    font-family: var(--font-primary);
    color: var(--text-primary);
    background: var(--gkm-gray-bg);
    transition: all var(--transition-base);
    margin-bottom: var(--space-lg);
}

.filter-search:focus {
    outline: none;
    border-color: var(--gkm-blue-primary);
    background: var(--gkm-white);
    box-shadow: 0 0 0 3px rgba(0, 168, 232, 0.1);
}

.filter-group {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: var(--border-light);
}

.filter-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.filter-group-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-md);
}

.filter-option {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 0;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.filter-option:hover {
    color: var(--gkm-blue-primary);
}

.filter-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--gkm-blue-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.filter-option .count {
    margin-left: auto;
    font-size: 12px;
    color: var(--text-muted);
    background: var(--gkm-gray-bg);
    padding: 2px 8px;
    border-radius: var(--border-radius-xl);
}

.filter-reset {
    width: 100%;
    padding: 10px;
    background: var(--gkm-gray-bg);
    color: var(--text-secondary);
    border-radius: var(--border-radius-md);
    font-size: 14px;
    font-weight: 600;
    margin-top: var(--space-md);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
    border: var(--border-light);
}

.filter-reset:hover {
    background: var(--gkm-blue-primary);
    color: white;
    border-color: var(--gkm-blue-primary);
}

/* Results Bar */
.results-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: var(--border-light);
}

.results-count {
    font-size: 15px;
    color: var(--text-secondary);
}

.results-count strong {
    color: var(--text-primary);
}

.results-sort {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.results-sort label {
    font-size: 14px;
    color: var(--text-muted);
}

.results-sort select {
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    border: var(--border-light);
    font-size: 14px;
    font-family: var(--font-primary);
    color: var(--text-primary);
    background: var(--gkm-white);
    cursor: pointer;
}

/* No Results */
.no-results {
    text-align: center;
    padding: var(--space-4xl) var(--space-lg);
    color: var(--text-muted);
}

.no-results-icon {
    font-size: 64px;
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

.no-results h3 {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

/* ============================================
   COURSE DETAIL PAGE
   ============================================ */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: var(--space-xl);
    align-items: start;
}

/* Course Detail Content */
.detail-hero-image {
    width: 100%;
    height: 360px;
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    margin-bottom: var(--space-xl);
    position: relative;
    overflow: hidden;
}

.detail-meta-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.detail-meta-card {
    text-align: center;
    padding: var(--space-lg);
    background: var(--gkm-gray-bg);
    border-radius: var(--border-radius-md);
    border: var(--border-light);
}

.detail-meta-icon {
    font-size: 24px;
    margin-bottom: var(--space-sm);
}

.detail-meta-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.detail-meta-label {
    font-size: 13px;
    color: var(--text-muted);
}

.detail-section {
    margin-bottom: var(--space-xl);
}

.detail-section h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--gkm-blue-primary);
}

.detail-section p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Objectives / Prerequisites Lists */
.detail-list {
    list-style: none;
}

.detail-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    border-bottom: var(--border-light);
}

.detail-list li:last-child {
    border-bottom: none;
}

.detail-list-icon {
    flex-shrink: 0;
    font-size: 18px;
    margin-top: 2px;
}

/* Curriculum Accordion */
.curriculum-list {
    border: var(--border-light);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.curriculum-item {
    border-bottom: var(--border-light);
}

.curriculum-item:last-child {
    border-bottom: none;
}

.curriculum-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-lg);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--gkm-white);
    border: none;
    font-family: var(--font-primary);
}

.curriculum-header:hover {
    background: var(--gkm-gray-bg);
    color: var(--gkm-blue-primary);
}

.curriculum-header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.curriculum-number {
    width: 32px;
    height: 32px;
    background: rgba(0, 168, 232, 0.1);
    color: var(--gkm-blue-primary);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

.curriculum-item.active .curriculum-number {
    background: var(--gkm-blue-primary);
    color: white;
}

.curriculum-duration {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
}

.curriculum-toggle {
    font-size: 18px;
    color: var(--gkm-blue-primary);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.curriculum-item.active .curriculum-toggle {
    transform: rotate(45deg);
}

.curriculum-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.curriculum-item.active .curriculum-body {
    max-height: 200px;
}

.curriculum-body-content {
    padding: 0 var(--space-lg) var(--space-lg);
    padding-left: calc(var(--space-lg) + 32px + var(--space-md));
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Included Items Grid */
.included-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.included-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--gkm-gray-bg);
    border-radius: var(--border-radius-md);
    font-size: 15px;
    color: var(--text-secondary);
}

.included-item-icon {
    font-size: 24px;
    flex-shrink: 0;
}

/* Instructor Card */
.instructor-card {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-xl);
    background: var(--gkm-gray-bg);
    border-radius: var(--border-radius-lg);
    border: var(--border-light);
}

.instructor-avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-full);
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    font-weight: 800;
    flex-shrink: 0;
}

.instructor-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.instructor-title {
    font-size: 14px;
    color: var(--gkm-blue-primary);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.instructor-bio {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Sticky Sidebar */
.detail-sidebar {
    position: sticky;
    top: calc(var(--navbar-height) + var(--space-lg));
}

.price-card {
    background: var(--gkm-white);
    border-radius: var(--border-radius-lg);
    border: var(--border-light);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.price-card-header {
    padding: var(--space-xl);
    text-align: center;
    background: var(--gkm-gray-bg);
    border-bottom: var(--border-light);
}

.price-badge-popular {
    display: inline-block;
    padding: 4px 16px;
    background: var(--gkm-blue-primary);
    color: white;
    border-radius: var(--border-radius-xl);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-md);
}

.price-amount {
    font-size: 48px;
    font-weight: 800;
    color: var(--gkm-blue-dark);
    line-height: 1;
}

.price-amount .currency {
    font-size: 24px;
}

.price-old {
    font-size: 18px;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-right: var(--space-sm);
}

.price-card-body {
    padding: var(--space-xl);
}

.price-card-body .btn {
    width: 100%;
    justify-content: center;
    margin-bottom: var(--space-md);
}

.price-features {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: var(--border-light);
}

.price-feature {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.price-feature-icon {
    color: var(--success);
    font-size: 16px;
    flex-shrink: 0;
}

/* Share Links */
.share-section {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background: var(--gkm-white);
    border-radius: var(--border-radius-lg);
    border: var(--border-light);
    text-align: center;
}

.share-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.share-links {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.share-link {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    background: var(--gkm-gray-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.share-link:hover {
    background: var(--gkm-blue-primary);
    color: white;
    transform: translateY(-2px);
}

/* Related Courses */
.related-courses {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

/* === ENHANCED ANIMATIONS === */
@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

@keyframes pulse-glow {
    0% { box-shadow: 0 0 0 0 rgba(0, 168, 232, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(0, 168, 232, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 168, 232, 0); }
}

@keyframes slide-in-left {
    from { transform: translateX(-100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes bounce-subtle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* === SOFTWARE MARQUEE === */
.software-marquee { overflow: hidden; position: relative; }
.software-marquee::before, .software-marquee::after { content: ''; position: absolute; top: 0; bottom: 0; width: 80px; z-index: 2; }
.software-marquee::before { left: 0; background: linear-gradient(to right, white, transparent); }
.software-marquee::after { right: 0; background: linear-gradient(to left, white, transparent); }
.software-marquee-track { display: flex; gap: var(--space-lg); animation: marquee-scroll 30s linear infinite; width: max-content; }
.software-marquee-track:hover { animation-play-state: paused; }
@keyframes marquee-scroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* === HERO PARTICLES === */
.hero-particles {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}
.hero-particles::before {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: white;
    box-shadow: 10vw 10vh 2px rgba(255,255,255,0.8),
                30vw 20vh 3px rgba(255,255,255,0.6),
                50vw 5vh 2px rgba(255,255,255,0.9),
                80vw 30vh 4px rgba(255,255,255,0.5),
                90vw 15vh 2px rgba(255,255,255,0.8);
    animation: particle-rise 15s linear infinite;
    border-radius: 50%;
}
@keyframes particle-rise {
    0% { transform: translateY(100vh); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateY(-100vh); opacity: 0; }
}

/* === ENHANCED COURSE CARD === */
.course-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}
.course-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 10px 25px rgba(0, 168, 232, 0.2);
}
.course-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: translateX(-100%);
    z-index: 1;
    pointer-events: none;
}
.course-card:hover::before {
    animation: shimmer 1s ease-in-out;
}

/* === MOBILE FILTER SIDEBAR TOGGLE & OVERLAY === */
.catalog-sidebar-toggle {
    display: none;
    align-items: center;
    gap: var(--space-xs);
    background: var(--gkm-blue-primary);
    color: white;
    border: none;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    margin-bottom: var(--space-md);
}
.catalog-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}
.catalog-overlay.active {
    display: block;
}

/* === ACTIVE FILTERS === */
.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}
.filter-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--gkm-bg-gray);
    color: var(--text-main);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}
.filter-tag button {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 0;
    font-size: 1rem;
}
.filter-tag button:hover {
    color: var(--gkm-red);
}

/* === CURRICULUM PROGRESS === */
.curriculum-progress {
    position: relative;
    padding-left: 30px;
}
.curriculum-progress::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 20px;
    bottom: 20px;
    width: 2px;
    background: var(--border-color);
}
.curriculum-progress > * {
    position: relative;
}
.curriculum-progress > *::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 20px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gkm-blue-primary);
    border: 3px solid white;
    box-shadow: 0 0 0 1px var(--border-color);
    z-index: 1;
}

/* === PRICE CARD SHIMMER & URGENCY === */
.price-card {
    position: relative;
    overflow: hidden;
    animation: pulse-glow 3s infinite;
}
.price-card::after {
    content: '';
    position: absolute;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(30deg);
    animation: shimmer 4s infinite linear;
    pointer-events: none;
}
.urgency-bar {
    background: rgba(255, 0, 0, 0.1);
    color: var(--gkm-red);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-md);
}
.urgency-bar i {
    animation: bounce-subtle 2s infinite;
}

/* ============================================
   RESPONSIVE — CATALOGUE & DETAIL
   ============================================ */
@media (max-width: 1024px) {
    .catalog-layout {
        grid-template-columns: 240px 1fr;
    }

    .detail-layout {
        grid-template-columns: 1fr;
    }

    .detail-sidebar {
        position: static;
        order: -1;
    }

    .detail-meta-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .related-courses {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .catalog-layout {
        grid-template-columns: 1fr;
    }

    .catalog-sidebar-toggle {
        display: flex;
    }

    .catalog-sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        z-index: 1000;
        transition: left 0.3s ease;
        background: white;
        overflow-y: auto;
        padding: var(--space-lg);
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
        max-height: none;
    }
    
    .catalog-sidebar.mobile-active {
        left: 0;
        animation: slide-in-left 0.3s ease;
    }

    .detail-meta-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .included-grid {
        grid-template-columns: 1fr;
    }

    .instructor-card {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .related-courses {
        grid-template-columns: 1fr;
    }

    .results-bar {
        flex-direction: column;
        gap: var(--space-md);
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .detail-meta-cards {
        grid-template-columns: 1fr;
    }

    .price-amount {
        font-size: 36px;
    }
}