/* ==========================================
   VARIABLES GLOBALES (faciles à modifier)
   ========================================== */
:root {
    /* Couleurs */
    --color-primary: #005cb9;
    --color-primary-dark: #004a99;
    --color-primary-darker: #003d7a;
    --color-title: #001b4e;
    --color-text: #333;
    --color-text-light: #666;
    --color-border: #a0a0a0;
    --color-bg: #f0f2f5;
    --color-card: #ffffff;
    --color-error: #dc2626;
    --color-footer: #3d3d3d;
    --color-gradient-start: #005cb9;
    --color-gradient-end: #002e5b;

    /* Espacements fluides */
    --padding-card: clamp(20px, 5vw, 35px);
    --padding-side: clamp(16px, 6vw, 30px);
    --gap-services: clamp(12px, 3vw, 18px);

    /* Rayons */
    --radius-card: 12px;
    --radius-input: 8px;

    /* Tailles fluides */
    --font-title: clamp(22px, 6vw, 28px);
    --font-subtitle: clamp(17px, 4.5vw, 20px);
    --font-body: clamp(14px, 3.6vw, 16px);
    --font-small: clamp(13px, 3.2vw, 15px);

    /* Dimensions */
    --card-max-width: 420px;
}

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

html {
    -webkit-text-size-adjust: 100%; /* Empêche iOS de zoomer auto */
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);

    /* Centrage parfait */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    min-height: 100dvh; /* Support navigateurs modernes */
    padding: env(safe-area-inset-top) env(safe-area-inset-right)
             env(safe-area-inset-bottom) env(safe-area-inset-left);
    padding: max(16px, env(safe-area-inset-top))
             max(16px, env(safe-area-inset-right))
             max(16px, env(safe-area-inset-bottom))
             max(16px, env(safe-area-inset-left));

    overflow-x: hidden;
    transition: background-color 0.3s ease;
}

/* ==========================================
   CARTE PRINCIPALE
   ========================================== */
.card {
    background: var(--color-card);
    width: 100%;
    max-width: var(--card-max-width);
    border-radius: var(--radius-card);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    overflow: visible;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;

    /* Sur très grands écrans : on garde 420px max */
    /* Sur mobile : 100% de la largeur disponible */
}

/* Sur très grands écrans : agrandir légèrement la carte */
@media (min-width: 1440px) {
    :root {
        --card-max-width: 460px;
    }
}

/* ==========================================
   BOUTON THEME (Mode sombre)
   ========================================== */
.theme-toggle {
    position: absolute;
    top: clamp(10px, 2vw, 15px);
    right: clamp(10px, 2vw, 15px);
    width: clamp(32px, 8vw, 38px);
    height: clamp(32px, 8vw, 38px);
    border-radius: 50%;
    border: none;
    background: #f0f2f5;
    cursor: pointer;
    font-size: clamp(14px, 4vw, 18px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    transition: background-color 0.2s, transform 0.2s;
    -webkit-tap-highlight-color: transparent;
}
.theme-toggle:hover { transform: scale(1.1); }
.theme-toggle:active { transform: scale(0.95); }

/* ==========================================
   FORMULAIRE
   ========================================== */
.form-section {
    padding: var(--padding-card) var(--padding-side) clamp(20px, 5vw, 25px);
    background: #ffffff;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    border-top-left-radius: var(--radius-card);
    border-top-right-radius: var(--radius-card);
    transition: background-color 0.3s ease;
}

/* EN-TÊTE */
.login-header { margin-bottom: clamp(18px, 4vw, 25px); }
.logo { margin-bottom: clamp(10px, 3vw, 15px); }
.logo-img {
    width: clamp(32px, 10vw, 40px);
    height: clamp(32px, 10vw, 40px);
    object-fit: contain;
}
.login-title {
    font-size: var(--font-title);
    font-weight: 700;
    color: var(--color-title);
    margin-bottom: 5px;
    letter-spacing: -0.5px;
    line-height: 1.15;
}
.login-subtitle {
    font-size: var(--font-subtitle);
    font-weight: 700;
    color: var(--color-title);
    margin-bottom: clamp(15px, 4vw, 20px);
    line-height: 1.2;
}
.login-desc {
    font-size: var(--font-small);
    color: var(--color-text);
    margin-bottom: clamp(18px, 4vw, 25px);
    line-height: 1.4;
}

/* TEXTE DYNAMIQUE (Email) */
.display-email-text {
    font-size: var(--font-small);
    color: var(--color-text);
    margin-bottom: clamp(15px, 4vw, 20px);
    line-height: 1.4;
    display: none;
    word-break: break-word;
}
.display-email-text strong { font-weight: 700; color: var(--color-title); }

/* LABELS + INPUTS */
.form-section label {
    display: block;
    font-size: var(--font-small);
    color: var(--color-text);
    margin-bottom: 8px;
    font-weight: 500;
}
.form-section input {
    width: 100%;
    padding: clamp(12px, 3.5vw, 15px);
    font-size: var(--font-body);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-input);
    outline: none;
    margin-bottom: clamp(15px, 4vw, 20px);
    transition: border-color 0.2s, background-color 0.3s, color 0.3s;
    font-family: inherit;
    -webkit-appearance: none;
    appearance: none;
}
.form-section input:focus { border-color: var(--color-primary); }

.input-group { position: relative; margin-bottom: clamp(15px, 4vw, 20px); }
.input-group input { margin-bottom: 0; }

.eye-icon {
    position: absolute;
    right: clamp(10px, 3vw, 15px);
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    font-size: clamp(16px, 4.5vw, 20px);
    color: var(--color-primary);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    padding: 5px;
}

/* BOUTONS */
.btn-primary {
    width: 100%;
    padding: clamp(12px, 3.5vw, 15px);
    background-color: var(--color-primary);
    color: white;
    font-size: var(--font-body);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-input);
    cursor: pointer;
    margin-bottom: clamp(10px, 2.5vw, 15px);
    transition: background-color 0.2s, color 0.2s, transform 0.1s;
    font-family: inherit;
    -webkit-tap-highlight-color: transparent;
}
.btn-primary:hover { background-color: var(--color-primary-dark); }
.btn-primary:active { transform: scale(0.98); }

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}
.btn-outline:hover { background-color: #f0f6ff; }

/* LIENS */
.links { margin-top: clamp(10px, 3vw, 15px); }
.links a {
    display: flex;
    align-items: center;
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-small);
    margin-bottom: clamp(8px, 2.5vw, 12px);
    transition: color 0.2s;
    word-break: break-word;
}
.links a:hover { text-decoration: underline; color: var(--color-primary-darker); }
.arrow { margin-right: 10px; font-weight: bold; font-size: clamp(16px, 4vw, 18px); flex-shrink: 0; }

/* MESSAGES D'ERREUR */
.error-msg {
    color: var(--color-error);
    font-size: clamp(12px, 3.2vw, 14px);
    margin-top: -10px;
    margin-bottom: 15px;
    display: none;
    font-weight: 500;
    line-height: 1.4;
}

/* ==========================================
   ÉTAPES
   ========================================== */
.step { display: none; }
.step.active { display: block; animation: fadeIn 0.3s ease-in-out; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================
   SECTION BLEUE PROMO
   ========================================== */
.promo-section {
    background: linear-gradient(135deg, var(--color-gradient-start) 0%, var(--color-gradient-end) 100%);
    color: white;
    padding: clamp(25px, 6vw, 35px) var(--padding-side) clamp(30px, 7vw, 40px);
    flex-shrink: 0;
}
.promo-section h2 {
    font-size: clamp(18px, 5vw, 22px);
    font-weight: 700;
    margin-bottom: clamp(8px, 2.5vw, 12px);
    letter-spacing: -0.5px;
    line-height: 1.2;
}
.promo-section p {
    font-size: var(--font-small);
    line-height: 1.5;
    margin-bottom: clamp(18px, 4.5vw, 25px);
    opacity: 0.95;
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-services) clamp(10px, 4vw, 15px);
}
.service-item {
    display: flex;
    align-items: center;
    gap: clamp(8px, 2.5vw, 12px);
    font-size: var(--font-small);
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
}
.service-item:hover { transform: translateX(3px); opacity: 0.85; }
.service-item svg {
    width: clamp(18px, 5vw, 22px);
    height: clamp(18px, 5vw, 22px);
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

/* Sur très petits mobiles : une seule colonne */
@media (max-width: 360px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
}

/* ==========================================
   PIED DE PAGE
   ========================================== */
.footer-section {
    background-color: var(--color-footer);
    color: white;
    padding: clamp(25px, 7vw, 40px) var(--padding-side) clamp(25px, 6vw, 35px);
    text-align: center;
    flex-shrink: 0;
    border-bottom-left-radius: var(--radius-card);
    border-bottom-right-radius: var(--radius-card);
    position: relative;
}
.footer-section .footer-logo { margin-bottom: clamp(15px, 4vw, 20px); display: inline-block; }
.footer-logo-img {
    width: clamp(26px, 8vw, 30px);
    height: clamp(26px, 8vw, 30px);
    object-fit: contain;
}
.footer-section .about-link {
    display: block;
    color: white;
    text-decoration: none;
    font-size: var(--font-body);
    font-weight: 400;
    margin-bottom: clamp(18px, 4.5vw, 25px);
    transition: opacity 0.2s;
}
.footer-section .about-link:hover { opacity: 0.8; }

/* ==========================================
   SÉLECTEUR DE LANGUE
   ========================================== */
.lang-container { position: relative; display: inline-block; }
.lang-selector {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
    font-size: var(--font-body);
    font-weight: 400;
    padding: clamp(6px, 2vw, 8px) clamp(12px, 3.5vw, 16px);
    border-radius: 6px;
    cursor: pointer;
    gap: 8px;
    transition: background-color 0.2s;
    -webkit-tap-highlight-color: transparent;
}
.lang-selector:hover { background-color: rgba(255, 255, 255, 0.25); }

.lang-dropdown {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 15px;
    background: white;
    border-radius: 12px;
    padding: 15px 0;
    display: none;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    min-width: clamp(140px, 40vw, 160px);
    z-index: 100;
}
.lang-dropdown.show { display: block; animation: fadeIn 0.2s ease-out; }
.lang-dropdown a {
    display: block;
    padding: clamp(10px, 3vw, 12px) clamp(16px, 5vw, 20px);
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-body);
    text-align: center;
    transition: background-color 0.2s;
}
.lang-dropdown a:hover { background-color: #f0f6ff; }
.dropdown-arrow {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid white;
}

/* ==========================================
   PAGE SUCCÈS + SPINNER
   ========================================== */
.success-icon {
    font-size: clamp(45px, 14vw, 60px);
    color: var(--color-primary);
    margin-bottom: clamp(15px, 4vw, 20px);
    text-align: center;
    animation: popIn 0.5s ease-out;
}
@keyframes popIn {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}
.success-title {
    text-align: center;
    color: var(--color-text);
    margin-bottom: 10px;
    font-size: var(--font-subtitle);
}
.success-text {
    text-align: center;
    color: var(--color-text-light);
    margin-bottom: clamp(20px, 5vw, 30px);
    font-size: var(--font-small);
}
.spinner {
    width: clamp(32px, 10vw, 40px);
    height: clamp(32px, 10vw, 40px);
    margin: 0 auto;
    border: 4px solid #e0e0e0;
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ==========================================
   MODE SOMBRE
   ========================================== */
body.dark { background-color: #121212; }
body.dark .card { background: #1e1e1e; box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6); }
body.dark .form-section { background: #1e1e1e; }
body.dark .login-title,
body.dark .login-subtitle { color: #8ab4f8; }
body.dark .login-desc,
body.dark .form-section label,
body.dark .display-email-text { color: #e0e0e0; }
body.dark .display-email-text strong { color: #8ab4f8; }
body.dark .form-section input {
    background: #2a2a2a;
    color: #ffffff;
    border-color: #555;
}
body.dark .form-section input:focus { border-color: #8ab4f8; }
body.dark .theme-toggle { background: #2a2a2a; color: #ffffff; }
body.dark .success-title { color: #e0e0e0; }
body.dark .success-text { color: #aaaaaa; }
body.dark .spinner { border-color: #333; border-top-color: #8ab4f8; }
body.dark .btn-outline { color: #8ab4f8; border-color: #8ab4f8; }
body.dark .btn-outline:hover { background: #1a2a3a; }

/* ==========================================
   RESPONSIVE - BREAKPOINTS
   ========================================== */

/* --- TRÈS PETITS MOBILES (≤ 360px) --- */
@media (max-width: 360px) {
    body { padding: 8px; }
    .login-title { font-size: 20px; }
    .login-subtitle { font-size: 16px; }
    .theme-toggle { width: 30px; height: 30px; font-size: 13px; }
}

/* --- PETITS MOBILES (≤ 480px) --- */
@media (max-width: 480px) {
    body {
        align-items: flex-start;
        padding: 12px;
        min-height: 100vh;
    }
    .card { margin-top: 8px; margin-bottom: 8px; }
}

/* --- MOBILES PAYSAGE (hauteur faible) --- */
@media (max-height: 700px) and (orientation: landscape) {
    body { align-items: flex-start; padding: 10px; }
    .card { min-height: auto; margin: 10px 0; }
    .login-header { margin-bottom: 15px; }
    .promo-section { padding: 20px; }
    .footer-section { padding: 20px; }
    .services-grid { gap: 12px; }
}

/* --- TABLETTES (481px - 768px) --- */
@media (min-width: 481px) and (max-width: 768px) {
    :root {
        --card-max-width: 460px;
    }
}

/* --- LAPTOPS (769px - 1024px) --- */
@media (min-width: 769px) and (max-width: 1024px) {
    :root {
        --card-max-width: 440px;
    }
}

/* --- DESKTOP (1025px - 1439px) --- */
@media (min-width: 1025px) and (max-width: 1439px) {
    /* Valeurs par défaut */
}

/* --- TRÈS GRANDS ÉCRANS (≥ 1440px) --- */
@media (min-width: 1440px) {
    :root {
        --card-max-width: 460px;
    }
    .card {
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    }
}

/* --- ÉCRANS ULTRA-WIDE (≥ 1920px) --- */
@media (min-width: 1920px) {
    :root {
        --card-max-width: 500px;
        --padding-card: 45px;
    }
}

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

/* Réduction des animations si l'utilisateur le demande */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Mode contraste élevé */
@media (prefers-contrast: more) {
    .form-section input { border-width: 2px; }
    .btn-primary { border: 2px solid var(--color-title); }
}

/* Support des écrans HDR / haute densité */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .card { box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12); }
}

/* ==========================================
   IMPRESSION (impression papier / PDF)
   ========================================== */
@media print {
    body { background: white; padding: 0; }
    .card { box-shadow: none; max-width: 100%; }
    .theme-toggle,
    .promo-section,
    .footer-section,
    .links { display: none; }
}