/*
 * ITFR FRANCE - Site Web Corporate
 * Thème: Modern Business avec French Design
 * CSS Principal avec Documentation des Couleurs
 */

/* ============================================
   DOCUMENTATION DES SCHÉMAS DE COULEURS
   ============================================ */

/*
 * Corporate Navy - Light Mode (Principal)
 * ----------------------------------------
 * Primary:      #1d3557 - Navy profond (titres, éléments principaux)
 * Secondary:    #457b9d - Bleu moyen (sections alternatives, accents)
 * Accent:       #a8dadc - Bleu clair (boutons, highlights)
 * Neutral:      #f1faee - Blanc cassé (fond de sections)
 * Background:   #ffffff - Blanc pur (arrière-plan principal)
 * Text:         #1a1a1a - Noir doux (texte principal)
 */

/*
 * Azure Elegance - Navigation Header
 * ----------------------------------------
 * Nav Background:    #CBE6FF - Bleu azur clair
 * Nav Text/Icons:    #001E30 - Bleu marine foncé
 * Nav Hover State:   #006494 - Bleu royal (fond) / #FFFFFF (texte)
 */

/*
 * Couleurs Fonctionnelles
 * ----------------------------------------
 * Success:     #2ecc71 - Vert (confirmation, succès)
 * Warning:     #f39c12 - Orange (attention)
 * Error:       #e74c3c - Rouge (erreur)
 * Info:        #3498db - Bleu information
 */

/* ============================================
   RESET ET BASE
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Corporate Navy - Light Mode */
    --color-primary: #1d3557;
    --color-secondary: #457b9d;
    --color-accent: #a8dadc;
    --color-neutral: #f1faee;
    --color-bg: #ffffff;
    --color-text: #1a1a1a;

    /* Navigation - Azure Elegance */
    --nav-bg: #CBE6FF;
    --nav-text: #001E30;
    --nav-hover-bg: #006494;
    --nav-hover-text: #FFFFFF;

    /* Couleurs Fonctionnelles */
    --color-success: #2ecc71;
    --color-warning: #f39c12;
    --color-error: #e74c3c;
    --color-info: #3498db;

    /* Espacements */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;

    /* Typographie */
    --font-primary: 'Montserrat', system-ui, -apple-system, sans-serif;
    --font-secondary: 'Lato', 'Segoe UI', system-ui, sans-serif;

    /* Ombres */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-secondary);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ============================================
   TYPOGRAPHIE
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    color: #d70000;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.875rem); }
h4 { font-size: clamp(1rem, 2.5vw, 1.5rem); }
h5 { font-size: clamp(0.875rem, 2vw, 1.25rem); }
h6 { font-size: clamp(0.75rem, 1.5vw, 1rem); }

p {
    margin-bottom: var(--spacing-md);
    max-width: 75ch;
}

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

a:hover {
    color: var(--color-primary);
}

/* ============================================
   NAVIGATION - AZURE ELEGANCE
   ============================================ */

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--nav-bg);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.header__container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.header__logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.header__logo img {
    width: auto;
    height: 60px;
    max-width: 200px;
    object-fit: contain;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav__list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
    align-items: center;
}

.nav__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--nav-text);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav__link .material-symbols-outlined {
    font-size: 1.25rem;
}

.nav__link:hover,
.nav__link:focus {
    background-color: var(--nav-hover-bg);
    color: var(--nav-hover-text);
    outline: none;
}

.nav__link[aria-current="page"] {
    background-color: var(--nav-hover-bg);
    color: var(--nav-hover-text);
}

.nav__toggle {
    display: none;
    background: none;
    border: none;
    color: var(--nav-text);
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav__toggle .material-symbols-outlined {
    font-size: 1.75rem;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .header__container {
        flex-wrap: wrap;
    }

    .nav__toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .header__nav {
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
    }

    .header__nav.active {
        max-height: 400px;
        padding-top: var(--spacing-md);
    }

    .nav__list {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-sm);
    }

    .nav__link {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-md);
    }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero__media {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero__media img,
.hero__media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(3px);
    transform: scale(1.03);
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(29, 53, 87, 0.7), rgba(29, 53, 87, 0));
    z-index: 0;
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-neutral);
    padding: var(--spacing-xl) var(--spacing-lg);
    max-width: 900px;
}

.hero__title {
    color: var(--color-neutral);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 4px 8px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    margin-bottom: var(--spacing-xl);
    text-shadow: 1px 2px 4px rgba(0, 0, 0, 0.3);
}

/* ============================================
   BOUTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn .material-symbols-outlined {
    font-size: 1.25rem;
}

.btn--primary {
    background-color: var(--color-accent);
    color: var(--color-primary);
}

.btn--primary:hover {
    background-color: var(--color-secondary);
    color: var(--color-neutral);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn--secondary:hover {
    background-color: var(--color-neutral);
    color: var(--color-primary);
}

.btn--large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

/* ============================================
   SECTIONS
   ============================================ */

.section {
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.section--neutral {
    background-color: var(--color-neutral);
}

.section--primary {
    background-color: var(--color-primary);
    color: var(--color-neutral);
}

.section--primary h2,
.section--primary h3 {
    color: var(--color-neutral);
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section__title {
    margin-bottom: var(--spacing-sm);
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--color-secondary);
}

.section--primary .section__subtitle {
    color: var(--color-accent);
}

.section__container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ============================================
   SECTION AVEC IMAGE DE FOND
   ============================================ */

.section--bg-image {
    position: relative;
    background-color: var(--color-primary);
}

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

.section__bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(3px);
    transform: scale(1.05);
}

.section__bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(29, 53, 87, 0.92), rgba(69, 123, 157, 0.88));
    z-index: 1;
}

.section--bg-image > * {
    position: relative;
    z-index: 2;
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background-color: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.card__icon {
    width: 64px;
    height: 64px;
    background-color: var(--color-accent);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.card__icon .material-symbols-outlined {
    font-size: 2rem;
    color: var(--color-primary);
}

.card__title {
    margin-bottom: var(--spacing-sm);
}

.card__content {
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

.card__link {
    color: var(--color-secondary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.card__link:hover {
    color: var(--color-primary);
}

.card__link .material-symbols-outlined {
    font-size: 1.125rem;
}

/* ============================================
   GRILLE DE CARDS
   ============================================ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

/* ============================================
   FORMULAIRE DE CONTACT
   ============================================ */

.contact-form {
    max-width: 700px;
    margin: 0 auto;
}

.form__group {
    margin-bottom: var(--spacing-lg);
}

.form__label {
    display: block;
    font-family: var(--font-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.form__input,
.form__textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-secondary);
    font-size: 1rem;
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(69, 123, 157, 0.2);
}

.form__textarea {
    min-height: 150px;
    resize: vertical;
}

.form__checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.form__checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--color-secondary);
}

.form__checkbox label {
    font-size: 0.875rem;
    line-height: 1.5;
}

/* ============================================
   COORDONNÉES ET CARTE
   ============================================ */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.contact-item__icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item__icon .material-symbols-outlined {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.contact-item__content h4 {
    margin-bottom: var(--spacing-xs);
}

.contact-item__content a {
    color: var(--color-secondary);
}

.contact-item__content a:hover {
    color: var(--color-primary);
}

.map-container {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.map-container iframe {
    width: 100%;
    height: 400px;
    display: block;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background-color: var(--color-primary);
    color: var(--color-neutral);
    padding: var(--spacing-2xl) var(--spacing-lg) var(--spacing-lg);
}

.footer__container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__section h3 {
    color: var(--color-neutral);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.footer__links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__links a {
    color: var(--color-accent);
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: var(--color-neutral);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-accent);
}

.footer__legal {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.footer__legal a {
    color: var(--color-accent);
}

/* ============================================
   TABLEAUX (PAGES LÉGALES)
   ============================================ */

.info-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
    background-color: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.info-table th,
.info-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
}

.info-table th {
    background-color: var(--color-primary);
    color: var(--color-neutral);
    font-family: var(--font-primary);
    font-weight: 600;
}

.info-table tr:nth-child(even) {
    background-color: var(--color-neutral);
}

.info-table tr:hover {
    background-color: var(--color-accent);
}

/* ============================================
   LISTES
   ============================================ */

.custom-list {
    list-style: none;
    padding-left: 0;
}

.custom-list li {
    padding-left: var(--spacing-xl);
    position: relative;
    margin-bottom: var(--spacing-md);
}

.custom-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-secondary);
    font-weight: bold;
    font-size: 1.25rem;
}

/* ============================================
   ACCESSIBILITÉ
   ============================================ */

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

/* Focus visible pour accessibilité */
*:focus-visible {
    outline: 3px solid var(--color-secondary);
    outline-offset: 2px;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
    color: var(--color-neutral);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    z-index: 9999;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--spacing-md);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

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

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero__content {
        padding: var(--spacing-lg) var(--spacing-md);
    }

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

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

    .btn--large {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .footer__legal {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .header__container {
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* ============================================
   IMPRESSION
   ============================================ */

@media print {
    .header,
    .footer,
    .btn,
    .hero {
        display: none;
    }

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

    body {
        font-size: 12pt;
        color: #000;
    }
}