/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-bg: #0f0f23;
    --card-bg: rgba(255, 255, 255, 0.1);
    --card-border: rgba(255, 255, 255, 0.18);
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-muted: #a0a0a0;

    /* Module Colors */
    --windows-color: #8b5cf6;
    --word-color: #3b82f6;
    --excel-color: #10b981;
    --cloud-color: #f59e0b;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Top Bar ===== */
.top-bar {
    background: rgba(15, 15, 35, 0.65);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.6rem 0;
    position: relative;
    z-index: 10;
}

.top-bar-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
}

.top-bar-left {
    display: flex;
    align-items: center;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.promo-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    background: rgba(245, 87, 108, 0.15);
    border: 1px solid rgba(245, 87, 108, 0.3);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    letter-spacing: 0.3px;
    box-shadow: 0 0 10px rgba(245, 87, 108, 0.1);
}

.badge-icon {
    display: inline-block;
    animation: pulse 1.5s infinite alternate;
}

@keyframes pulse {
    0% { transform: scale(1); }
    100% { transform: scale(1.2); }
}

.top-bar .contact-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.top-bar .contact-item:hover {
    color: var(--text-primary);
    transform: translateY(-1px);
}

.top-bar .contact-item svg {
    opacity: 0.9;
}

/* ===== Header ===== */
.header {
    padding: var(--spacing-lg) 0;
    background: linear-gradient(135deg, #4c1d95 0%, #1e1b4b 100%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-xl);
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: moveBackground 25s linear infinite;
    pointer-events: none;
}

@keyframes moveBackground {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(40px, 40px);
    }
}

/* Logo */
.header-logo {
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-img {
    width: 44px;
    height: 44px;
    object-fit: contain;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.logo-link:hover .logo-img {
    transform: rotate(-6deg) scale(1.06);
    border-color: rgba(139, 92, 246, 0.6);
    box-shadow: 0 6px 16px rgba(139, 92, 246, 0.35);
}

.logo-text {
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    font-family: 'Poppins', sans-serif;
}

.logo-text-accent {
    background: linear-gradient(135deg, #a78bfa 0%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Titles */
.header-titles {
    text-align: right;
    max-width: 750px;
    position: relative;
    z-index: 2;
}

@media (min-width: 769px) {
    .header-titles {
        max-width: 900px;
    }
}

.header-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: #a78bfa;
    margin-bottom: 0.5rem;
    background: rgba(139, 92, 246, 0.12);
    padding: 0.2rem 0.65rem;
    border-radius: 30px;
    border: 1px solid rgba(139, 92, 246, 0.25);
}

.header-title {
    font-size: clamp(1.25rem, 2.5vw, 1.8rem);
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 0.4rem;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

@media (min-width: 769px) {
    .header-title {
        white-space: nowrap;
    }
}

.header-subtitle {
    font-size: clamp(0.85rem, 1.5vw, 0.95rem);
    font-weight: 500;
    color: #cbd5e1;
    margin-bottom: 0;
}

.header-subtitle strong {
    color: #ffffff;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.08);
    padding: 0.1rem 0.5rem;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===== Main Content ===== */
.main-content {
    padding: var(--spacing-lg) 0;
}

/* ===== Info Section ===== */
.info-section {
    padding: 0.5rem 0;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    max-width: 1000px;
    margin: 0 auto;
}

.info-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.3);
}

.info-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.info-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.info-icon svg {
    color: white;
}

.info-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0;
    color: var(--text-primary);
}

.info-card p,
.info-card ul {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.info-card ul {
    list-style: none;
    padding: 0;
}

.info-card ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
}

.info-card ul li::before {
    content: '•';
    color: var(--windows-color);
    font-weight: bold;
    font-size: 1.5rem;
    position: absolute;
    left: 0;
    top: -0.2rem;
}

.price-value {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    background: var(--secondary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 0.5rem;
    letter-spacing: -1px;
    font-family: 'Poppins', sans-serif;
}

/* ===== Section Titles ===== */
.section-title,
.module-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-align: center;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.module-desc-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 0.75rem var(--spacing-lg);
    max-width: 850px;
    margin: -0.5rem auto var(--spacing-lg) auto;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.module-desc-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.25);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.05);
}

.module-desc {
    font-size: clamp(0.9rem, 1.8vw, 1.02rem);
    color: var(--text-secondary);
    line-height: 1.7;
    text-align: center;
    font-weight: 400;
    margin: 0;
}

.module-desc:not(:last-child) {
    margin-bottom: 0.5rem;
}

/* ===== Modules Overview Title ===== */
.modules-overview {
    text-align: center;
    padding: var(--spacing-lg) 0 var(--spacing-xs);
}

.main-section-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.title-underline {
    width: 100px;
    height: 4px;
    background: var(--primary-gradient);
    margin: 0 auto;
    border-radius: 2px;
}

/* ===== Video Section ===== */
.video-section {
    margin-bottom: 0.5rem;
}

.video-wrapper {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    transition: transform var(--transition-normal);
}

.video-wrapper:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.4);
}

.video-wrapper video {
    width: 100%;
    height: auto;
    display: block;
}

/* ===== Module Sections ===== */
.module-section {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.module-section:nth-child(even) {
    background: rgba(255, 255, 255, 0.02);
}

.module-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: stretch;
}

/* ===== Slider ===== */
.slider-container {
    position: relative;
}

.slider {
    position: relative;
    width: 100%;
    max-width: 800px;
    height: 450px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-md);
}

.slider-track {
    display: flex;
    transition: transform var(--transition-slow);
}

.slide {
    min-width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.slide img {
    width: 100%;
    height: 415px;
    display: block;
    object-fit: cover;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.slider-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.slider-btn.prev {
    left: var(--spacing-sm);
}

.slider-btn.next {
    right: var(--spacing-sm);
}

.slider-dots {
    position: absolute;
    bottom: var(--spacing-sm);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-xs);
    z-index: 10;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider-dot.active {
    background: var(--text-primary);
    width: 24px;
    border-radius: 5px;
}

/* ===== Video List ===== */
.video-list {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    height: 450px;
    display: flex;
    flex-direction: column;
}

.video-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.video-list-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0;
    color: var(--text-primary);
}

.video-count {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--card-border);
}

.video-items {
    list-style: none;
    overflow-y: auto;
    flex: 1;
    padding-right: var(--spacing-xs);
}

/* Custom Scrollbar for Video Items */
.video-items::-webkit-scrollbar {
    width: 6px;
}

.video-items::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.video-items::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

.video-items::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.video-items::-webkit-scrollbar-button:single-button {
    background-color: rgba(255, 255, 255, 0.1);
    display: block;
    background-size: 10px;
    background-repeat: no-repeat;
    height: 16px;
    width: 16px;
    border-radius: 4px;
}

.video-items::-webkit-scrollbar-button:single-button:vertical:decrement {
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100' height='100' fill='white'><polygon points='50,0 0,100 100,100'/></svg>");
    background-position: center bottom 2px;
}

.video-items::-webkit-scrollbar-button:single-button:vertical:increment {
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100' height='100' fill='white'><polygon points='50,100 0,0 100,0'/></svg>");
    background-position: center top 2px;
}

.video-items::-webkit-scrollbar-button:single-button:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.video-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.video-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(8px);
}

.video-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-gradient);
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.video-name {
    font-size: 1rem;
    color: var(--text-secondary);
}

.video-duration {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    opacity: 0.8;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.video-duration svg {
    opacity: 0.7;
}

/* Module-specific colors */
#module-windows .video-number {
    background: linear-gradient(135deg, var(--windows-color) 0%, #7c3aed 100%);
}

#module-word .video-number {
    background: linear-gradient(135deg, var(--word-color) 0%, #2563eb 100%);
}

#module-excel .video-number {
    background: linear-gradient(135deg, var(--excel-color) 0%, #059669 100%);
}

#module-cloud .video-number {
    background: linear-gradient(135deg, var(--cloud-color) 0%, #d97706 100%);
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    background: rgba(255, 255, 255, 0.05);
    border-top: 1px solid var(--card-border);
    margin-top: var(--spacing-xl);
}

.footer p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .module-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .video-list {
        order: 2;
    }

    .slider-container {
        order: 1;
    }
}

@media (max-width: 768px) {
    .top-bar-flex {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .top-bar-left {
        justify-content: center;
    }

    .top-bar-right {
        justify-content: center;
        width: 100%;
        gap: var(--spacing-sm);
        flex-wrap: wrap;
    }

    .header-flex {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }

    .header-titles {
        text-align: center;
    }

    .header-logo {
        margin-bottom: 0.25rem;
    }
}

@media (max-width: 640px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }

    .header {
        padding: var(--spacing-md) 0;
    }

    .slider-btn {
        width: 40px;
        height: 40px;
    }

    .slider-btn svg {
        width: 20px;
        height: 20px;
    }

    .video-list {
        padding: var(--spacing-sm);
    }

    .video-list-title {
        font-size: 1.25rem;
    }

    .video-item {
        padding: var(--spacing-xs);
    }

    .video-number {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }

    .video-name {
        font-size: 0.875rem;
    }
}

/* ===== FAQ Section ===== */
#faq-bureautique {
    max-width: 900px;
    margin: var(--spacing-xl) auto;
    padding: 0 var(--spacing-md);
}

#faq-bureautique h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    padding-bottom: var(--spacing-xs);
}

#faq-bureautique h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.faq-item {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.faq-item:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.25);
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.05);
}

.faq-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.faq-item h3::before {
    content: '?';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: var(--primary-gradient);
    color: #ffffff;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.faq-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.faq-item p strong {
    color: #ffffff;
    font-weight: 600;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.module-section {
    animation: fadeIn var(--transition-slow) ease-out;
}

/* ===== Accessibility ===== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
button:focus-visible,
.video-item:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}