/* =============================================================================
   RESPONSIVE.CSS - Styles responsive pour DPAI Web
   ============================================================================= */

/* =============================================================================
   RESPONSIVE - DESKTOP LARGE (1400px+)
   ============================================================================= */

@media (min-width: 1400px) {
    .container {
        padding: 0 var(--spacing-2xl);
    }
    
    .hero .container {
        max-width: 1400px;
    }
    
    .nav-links {
        gap: var(--spacing-2xl);
    }
}

/* =============================================================================
   RESPONSIVE - DESKTOP (1200px - 1399px)
   ============================================================================= */

@media (max-width: 1399px) {
    .hero .container {
        max-width: 1200px;
    }
}

/* =============================================================================
   RESPONSIVE - TABLET LARGE (992px - 1199px)
   ============================================================================= */

@media (max-width: 1199px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .nav-links {
        gap: var(--spacing-lg);
    }
    
    .nav-actions {
        gap: var(--spacing-sm);
    }
    
    .nav-actions .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-xs);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
    
    .footer-brand {
        grid-column: 1 / -1;
    }
}

/* =============================================================================
   RESPONSIVE - TABLET (768px - 991px)
   ============================================================================= */

@media (max-width: 991px) {
    .nav-links,
    .nav-actions {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--gray-200);
        z-index: var(--z-dropdown);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all var(--transition-base);
    }
    
    .nav-links.active,
    .nav-actions.active {
        display: flex;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-links {
        order: 2;
    }
    
    .nav-actions {
        order: 1;
        padding-top: 0;
        border-top: none;
    }
    
    .nav-actions .btn {
        width: 100%;
        justify-content: center;
        margin-bottom: var(--spacing-sm);
    }
    
    .nav-links {
        padding-bottom: 0;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-md) var(--spacing-lg);
        text-align: center;
    }
    
    .nav-link.active::after {
        display: none;
    }
    
    .mobile-toggle {
        display: block;
        z-index: calc(var(--z-fixed) + 10);
    }
    
    .mobile-toggle.active {
        color: var(--primary);
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-actions,
    .hero-trust {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .dashboard-mockup {
        max-width: 400px;
    }
    
    .steps {
        flex-wrap: wrap;
    }
    
    .step-arrow {
        display: none;
    }
    
    .step {
        min-width: 250px;
        flex: 1 0 250px;
    }
    
    .token-packs {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
}

/* =============================================================================
   RESPONSIVE - MOBILE LARGE (576px - 767px)
   ============================================================================= */

@media (max-width: 767px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section-header {
        margin-bottom: var(--spacing-xl);
    }
    
    .section-tag {
        font-size: var(--font-size-xs);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
        min-height: auto;
    }
    
    .hero .container {
        gap: var(--spacing-xl);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .dashboard-mockup {
        max-width: 100%;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step-arrow {
        display: none;
    }
    
    .step {
        min-width: 100%;
    }
    
    .step-icon {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-xl);
    }
    
    .step-number {
        width: 32px;
        height: 32px;
        font-size: var(--font-size-base);
    }
    
    .pricing-cards,
    .pricing-cards-full {
        grid-template-columns: 1fr;
    }
    
    .pricing-card,
    .pricing-card-full {
        padding: var(--spacing-lg);
    }
    
    .pricing-card-full.featured {
        transform: none;
    }
    
    .pricing-card-full.featured:hover {
        transform: translateY(-5px);
    }
    
    .featured-ribbon {
        top: -8px;
        padding: var(--spacing-xs) var(--spacing-lg);
        font-size: var(--font-size-xs);
    }
    
    .comparison-table {
        padding: var(--spacing-xl) 0;
    }
    
    .table-container {
        border-radius: var(--border-radius-lg);
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .token-packs-grid {
        grid-template-columns: 1fr;
    }
    
    .token-pack-card.best-value {
        transform: none;
    }
    
    .token-pack-card.best-value:hover {
        transform: translateY(-5px);
    }
    
    .best-value-ribbon {
        top: -8px;
        padding: var(--spacing-xs) var(--spacing-lg);
        font-size: var(--font-size-xs);
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .cta {
        padding: var(--spacing-xl) 0;
    }
    
    .cta h2 {
        font-size: var(--font-size-2xl);
    }
    
    .cta p {
        font-size: var(--font-size-base);
    }
    
    .cta-actions {
        flex-direction: column;
    }
    
    .cta-actions .btn {
        width: 100%;
    }
    
    .footer {
        padding: var(--spacing-xl) 0;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-links {
        margin-bottom: var(--spacing-lg);
    }
    
    .footer-links h4 {
        font-size: var(--font-size-base);
    }
    
    .footer-links ul li {
        margin-bottom: var(--spacing-xs);
    }
    
    .footer-links a {
        font-size: var(--font-size-xs);
    }
    
    .social-links {
        justify-content: center;
    }
    
    .social-link {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-base);
    }
    
    .page-header {
        padding: var(--spacing-xl) 0 var(--spacing-lg);
    }
    
    .page-header h1 {
        font-size: var(--font-size-2xl);
    }
    
    .pricing-tabs {
        flex-wrap: wrap;
    }
    
    .pricing-tab {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .pricing-tab i {
        display: none;
    }
    
    .modal {
        padding: var(--spacing-md);
    }
    
    .modal-content {
        margin: var(--spacing-md);
    }
}

/* =============================================================================
   RESPONSIVE - MOBILE (375px - 575px)
   ============================================================================= */

@media (max-width: 575px) {
    html {
        font-size: 13px;
    }
    
    .logo span {
        display: none;
    }
    
    .hero-badge {
        display: none;
    }
    
    .hero-title {
        font-size: var(--font-size-xl);
    }
    
    .hero-trust {
        display: none;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-item {
        padding: var(--spacing-lg);
    }
    
    .service-count {
        font-size: var(--font-size-3xl);
    }
    
    .step-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-lg);
    }
    
    .step-number {
        width: 24px;
        height: 24px;
        font-size: var(--font-size-sm);
    }
    
    .step h3 {
        font-size: var(--font-size-base);
    }
    
    .pricing-price-full .price-amount {
        font-size: var(--font-size-3xl);
    }
    
    .pricing-features-full li {
        font-size: var(--font-size-xs);
    }
    
    .token-pack-amount {
        font-size: var(--font-size-lg);
    }
    
    .token-pack-price .price {
        font-size: var(--font-size-2xl);
    }
    
    .token-pack-uses li {
        font-size: var(--font-size-xs);
    }
    
    .calculator-item label {
        font-size: var(--font-size-xs);
    }
    
    .calculator-item .token-cost {
        font-size: var(--font-size-xs);
    }
    
    .calculator-total {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .faq-question h4 {
        font-size: var(--font-size-sm);
    }
    
    .faq-answer p {
        font-size: var(--font-size-xs);
    }
    
    .testimonial-rating {
        font-size: var(--font-size-sm);
    }
    
    .testimonial-text {
        font-size: var(--font-size-sm);
    }
    
    .author-avatar {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-xs);
    }
    
    .author-name {
        font-size: var(--font-size-sm);
    }
    
    .author-title {
        display: none;
    }
    
    .back-to-top {
        width: 44px;
        height: 44px;
        font-size: var(--font-size-base);
    }
}

/* =============================================================================
   RESPONSIVE - EXTRA SMALL (< 375px)
   ============================================================================= */

@media (max-width: 374px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero .container {
        gap: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-lg);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-sm);
    }
    
    .section-title {
        font-size: var(--font-size-xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-sm);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .feature-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-lg);
    }
    
    .feature-title {
        font-size: var(--font-size-base);
    }
    
    .service-count {
        font-size: var(--font-size-2xl);
    }
    
    .step-icon {
        width: 36px;
        height: 36px;
    }
    
    .pricing-card-full {
        padding: var(--spacing-md);
    }
    
    .pricing-card-header h3 {
        font-size: var(--font-size-lg);
    }
    
    .pricing-price-full .price-amount {
        font-size: var(--font-size-2xl);
    }
    
    .token-pack-card {
        padding: var(--spacing-lg);
    }
    
    .token-pack-header h3 {
        font-size: var(--font-size-lg);
    }
    
    .token-pack-amount {
        font-size: var(--font-size-base);
    }
    
    .calculator-item {
        padding: var(--spacing-md);
    }
    
    .input-group input {
        width: 48px;
    }
    
    .input-group button {
        width: 28px;
        height: 28px;
    }
    
    .faq-question {
        padding: var(--spacing-md);
    }
    
    .faq-question h4 {
        font-size: var(--font-size-xs);
    }
    
    .testimonial-card {
        padding: var(--spacing-lg);
    }
    
    .testimonial-text {
        font-size: var(--font-size-xs);
    }
    
    .author-avatar {
        width: 28px;
        height: 28px;
        font-size: var(--font-size-xs);
    }
    
    .cta h2 {
        font-size: var(--font-size-xl);
    }
    
    .cta p {
        font-size: var(--font-size-sm);
    }
    
    .footer-brand p {
        display: none;
    }
    
    .footer-links h4 {
        font-size: var(--font-size-sm);
    }
    
    .page-header h1 {
        font-size: var(--font-size-xl);
    }
    
    .modal-content {
        width: calc(100% - var(--spacing-xl));
        max-width: 100%;
    }
}

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

@media print {
    .navbar,
    .footer,
    .back-to-top,
    .mobile-toggle,
    .user-menu,
    .nav-actions {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    section {
        page-break-inside: avoid;
    }
    
    .btn {
        display: none;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
}

/* =============================================================================
   DARK MODE (Optionnel - si vous voulez ajouter un mode sombre)
   ============================================================================= */

.dark-mode {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --primary-bg: #0f172a;
    
    --gray-50: #1f2937;
    --gray-100: #111827;
    --gray-200: #374151;
    --gray-300: #4b5563;
    --gray-400: #6b7280;
    --gray-500: #9ca3af;
    --gray-600: #d1d5db;
    --gray-700: #e5e7eb;
    --gray-800: #f3f4f6;
    --gray-900: #f9fafb;
    --white: #1f2937;
    --black: #ffffff;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    
    --gray-800: #1f2937;
}

.dark-mode body {
    background-color: var(--gray-900);
    color: var(--gray-200);
}

.dark-mode .navbar {
    background: rgba(15, 23, 42, 0.95);
    border-bottom-color: rgba(55, 65, 81, 0.3);
}

.dark-mode .logo,
.dark-mode .footer-brand .logo {
    color: var(--white);
}

.dark-mode .nav-link {
    color: var(--gray-400);
}

.dark-mode .nav-link:hover,
.dark-mode .nav-link.active {
    color: var(--primary-light);
}

.dark-mode .pricing-card,
.dark-mode .pricing-card-full,
.dark-mode .feature-card,
.dark-mode .token-pack-card,
.dark-mode .testimonial-card,
.dark-mode .card {
    background: var(--gray-800);
    border-color: var(--gray-700);
}

.dark-mode .pricing-card-full.featured {
    background: var(--primary-bg);
    border-color: var(--primary);
}

.dark-mode .comparison-table .table-container {
    background: var(--gray-800);
}

.dark-mode .comparison-table th {
    background: var(--gray-700);
    color: var(--gray-300);
}

.dark-mode .comparison-table td {
    color: var(--gray-400);
}

.dark-mode .comparison-table tr:hover td {
    background: var(--gray-700);
}

.dark-mode .token-calculator {
    background: var(--gray-800);
}

.dark-mode .calculator-item {
    background: var(--gray-700);
}

.dark-mode .calculator-total {
    background: var(--primary);
    color: var(--white);
}

.dark-mode .faq-item {
    border-bottom-color: var(--gray-700);
}

.dark-mode .faq-question {
    color: var(--gray-300);
}

.dark-mode .faq-answer p {
    color: var(--gray-400);
}

.dark-mode .cta {
    background: linear-gradient(135deg, #1e40af 0%, #3730a3 100%);
}

.dark-mode .footer {
    background: var(--gray-900);
}

.dark-mode .social-link {
    background: var(--gray-800);
    color: var(--gray-400);
}

.dark-mode .social-link:hover {
    background: var(--primary);
    color: var(--white);
}

.dark-mode .back-to-top {
    background: var(--primary);
}

/* Theme Toggle Button (si vous ajoutez cette fonctionnalité) */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--gray-600);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.dark-mode .theme-toggle:hover {
    background: var(--gray-700);
}

.theme-toggle i {
    font-size: var(--font-size-lg);
}