/**
 * Styles communs et améliorations UX/UI
 * - Charte graphique (variables :root)
 * - Menu hamburger
 * - Bouton retour en haut
 * - Animations
 * - Accessibilité
 * - Responsive
 */

/* ===================================
   Charte graphique – Variables racine
   =================================== */

:root {
    /* Couleurs principales */
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --secondary: #10B981;
    --secondary-dark: #059669;
    --warning: #F59E0B;
    --danger: #EF4444;
    --danger-dark: #DC2626;
    --info: #3B82F6;
    --info-dark: #1E40AF;

    /* Neutres */
    --white: #ffffff;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* États (alertes, erreurs, succès) */
    --success-text: #065F46;
    --success-bg: rgba(16, 185, 129, 0.1);
    --success-border: #10B981;
    --success-bg-soft: #ECFDF5;
    --success-border-soft: #D1FAE5;
    --success-border-200: #A7F3D0;
    --warning-text: #92400E;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --error-text: #B91C1C;
    --error-bg: #FEF2F2;
    --error-border: #FECACA;
    --info-bg: rgba(59, 130, 246, 0.1);
    --info-border: #3B82F6;

    /* Indigo (primaire) – fonds et bordures */
    --indigo-50: #EEF2FF;
    --indigo-100: #E0E7FF;
    --indigo-800: #3730A3;
    --indigo-900: #312E81;
    --indigo-950: #1E1B4B;
    --slate-900: #0F172A;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #4F46E5 0%, #6366F1 100%);
    --gradient-success: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-hero-bg: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
    --gradient-indigo-soft: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    --gradient-success-soft: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
    --gradient-slate: linear-gradient(135deg, #F8FAFC 0%, #EEF2FF 100%);

    /* Espacements (rem) */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    /* Espacements fins (pour alignement pixel) */
    --space-2: 0.125rem;
    --space-4: 0.25rem;
    --space-6: 0.375rem;
    --space-8: 0.5rem;
    --space-10: 0.625rem;
    --space-12: 0.75rem;
    --space-14: 0.875rem;
    --space-16: 1rem;
    --space-20: 1.25rem;
    --space-24: 1.5rem;
    --space-32: 2rem;

    /* Typographie – tailles */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Rayons */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-12: 0.75rem;
    --radius-16: 1rem;

    /* Ombres */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-primary: 0 2px 8px rgba(79, 70, 229, 0.25);
    --shadow-primary-hover: 0 4px 12px rgba(79, 70, 229, 0.35);
    --shadow-primary-focus: 0 0 0 3px rgba(79, 70, 229, 0.12);
    --shadow-primary-focus-strong: 0 0 0 3px rgba(79, 70, 229, 0.2);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Largeurs conteneurs */
    --container-sm: 700px;
    --container-md: 800px;
    --container-lg: 900px;
    --container-xl: 1200px;
}

/* ===================================
   Skip link (accessibilité)
   =================================== */

.skip-link {
    position: absolute;
    top: -100px;
    left: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-900);
    color: white;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md, 8px);
    z-index: 10000;
    transition: top 0.2s ease;
}
.skip-link:focus {
    top: var(--spacing-md);
    outline: 2px solid white;
    outline-offset: 2px;
}

/* ===================================
   Menu Hamburger (Mobile)
   =================================== */

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    transition: transform 0.3s ease;
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background: var(--gray-800);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    /* Nav Pro : tous les boutons visibles comme sur le dashboard (pas de tiroir) */
    .nav-pro .hamburger {
        display: none;
    }
    .nav-pro .nav-menu-pro,
    .nav-menu.nav-menu-pro {
        position: static;
        right: auto;
        flex-direction: row;
        flex-wrap: wrap;
        background: transparent;
        width: 100%;
        max-width: none;
        padding: 0;
        box-shadow: none;
        height: auto;
        overflow-y: visible;
    }
    .nav-pro .nav-menu-pro li {
        margin: 0;
    }

    /* Tiroir hamburger uniquement pour la nav classique (pas Pro) */
    .nav-menu:not(.nav-menu-pro) {
        position: fixed;
        top: 70px;
        right: -100%;
        flex-direction: column;
        background: white;
        width: 100%;
        max-width: 300px;
        padding: var(--spacing-lg);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 1000;
        height: calc(100vh - 70px);
        overflow-y: auto;
    }

    .nav-menu:not(.nav-menu-pro).active {
        right: 0;
    }

    .nav-menu:not(.nav-menu-pro) li {
        margin: var(--spacing-sm) 0;
    }

    .nav-link {
        display: block;
        padding: var(--spacing-md);
        font-size: 1.125rem;
    }

    body.menu-open {
        overflow: hidden;
    }

    /* Overlay */
    body.menu-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        animation: fadeIn 0.3s ease;
    }
}

/* ===================================
   Bouton Retour en Haut
   =================================== */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 998;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.back-to-top:active {
    transform: translateY(-2px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

/* ===================================
   Header Scrolled
   =================================== */

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

.header.hidden {
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

/* ===================================
   Skip Link (Accessibilité)
   =================================== */

.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    border-radius: 0 0 var(--radius-md) 0;
    z-index: 10000;
    font-weight: 600;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
    outline: 3px solid var(--secondary);
    outline-offset: 2px;
}

/* ===================================
   Focus visible pour navigation clavier
   =================================== */

body:not(.keyboard-nav) *:focus {
    outline: none;
}

body.keyboard-nav *:focus {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* ===================================
   Animations au Scroll
   =================================== */

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Délais pour effet cascade */
.animate-on-scroll:nth-child(1) {
    transition-delay: 0.1s;
}

.animate-on-scroll:nth-child(2) {
    transition-delay: 0.2s;
}

.animate-on-scroll:nth-child(3) {
    transition-delay: 0.3s;
}

/* ===================================
   Bannière Cookies (RGPD)
   =================================== */

.cookie-banner {
    position: fixed;
    bottom: -200px;
    left: 0;
    right: 0;
    background: white;
    padding: var(--spacing-lg);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    transition: bottom 0.5s ease;
}

.cookie-banner.visible {
    bottom: 0;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.cookie-content p {
    margin: 0;
    flex: 1;
    font-size: 0.9375rem;
    line-height: 1.5;
}

.cookie-actions {
    display: flex;
    gap: var(--spacing-sm);
}

@media (max-width: 768px) {
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-actions {
        width: 100%;
        flex-direction: column;
    }

    .cookie-actions .btn {
        width: 100%;
    }
}

/* ===================================
   Loader / Spinner
   =================================== */

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spinner-small {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

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

/* ===================================
   Tooltips
   =================================== */

[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gray-900);
    color: white;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 1000;
}

[data-tooltip]::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--gray-900);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

[data-tooltip]:hover::before,
[data-tooltip]:hover::after {
    opacity: 1;
}

[data-tooltip]:hover::before {
    transform: translateX(-50%) translateY(-12px);
}

/* ===================================
   Badges et labels
   =================================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    white-space: nowrap;
}

.badge-primary {
    background: var(--primary);
    color: white;
}

.badge-success {
    background: var(--secondary);
    color: white;
}

.badge-warning {
    background: var(--warning);
    color: white;
}

.badge-info {
    background: var(--info);
    color: white;
}

/* ===================================
   Alerte / Messages
   =================================== */

.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin: var(--spacing-md) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.alert-success {
    background: var(--success-bg);
    border-left: 4px solid var(--secondary);
    color: var(--success-text);
}

.alert-warning {
    background: var(--warning-bg);
    border-left: 4px solid var(--warning);
    color: var(--warning-text);
}

.alert-error {
    background: var(--error-bg);
    border-left: 4px solid var(--danger);
    color: var(--error-text);
}

.alert-info {
    background: var(--info-bg);
    border-left: 4px solid var(--info);
    color: var(--info-dark);
}

/* ===================================
   Cards avec hover effect
   =================================== */

.card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.card-body {
    color: var(--gray-700);
}

/* ===================================
   Loading State
   =================================== */

.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 3px solid var(--primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ===================================
   Divider
   =================================== */

.divider {
    height: 1px;
    background: var(--gray-200);
    margin: var(--spacing-xl) 0;
}

.divider-text {
    display: flex;
    align-items: center;
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.divider-text::before,
.divider-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-200);
}

.divider-text span {
    padding: 0 var(--spacing-md);
    color: var(--gray-500);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ===================================
   Print Styles
   =================================== */

@media print {
    .hamburger,
    .back-to-top,
    .cookie-banner,
    .nav-menu,
    .skip-link,
    .cta {
        display: none !important;
    }

    body {
        font-size: 12pt;
    }

    a {
        text-decoration: underline;
    }

    .card {
        page-break-inside: avoid;
    }
}

/* ===================================
   Utilities
   =================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pointer {
    cursor: pointer;
}

.no-select {
    user-select: none;
}

/* ===================================
   Animations supplémentaires
   =================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease;
}

.fade-in-up {
    animation: fadeInUp 0.6s ease;
}

.fade-in-down {
    animation: fadeInDown 0.6s ease;
}

.pulse-animation {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.bounce-animation {
    animation: bounce 1s ease infinite;
}