/* ==========================================================================
   VARIABLES ET CONFIGURATION GLOBALE
   ========================================================================== */

:root {
    /* Palette de Couleurs */
    --primary: #1e3a8a;      /* Bleu Marine Profond */
    --primary-light: #3b82f6; /* Bleu Plus Clair */
    --accent: #f97316;       /* Orange Dynamique */
    --accent-hover: #ea580c; /* Orange Plus Sombre */
    --text-dark: #1f2937;    /* Gris Très Foncé */
    --text-muted: #6b7280;   /* Gris Atténué */
    --bg-light: #f3f4f6;     /* Gris Très Clair */
    --bg-white: #ffffff;     /* Blanc Pur */
    --border: #e5e7eb;       /* Bordure Légère */
    --success: #10b981;      /* Vert Réussite */
    --error: #ef4444;        /* Rouge Erreur */

    /* Typographie */
    --font-main: 'Lato', sans-serif;
    --font-heading: 'Montserrat', sans-serif;

    /* Ombres et Effets */
    --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);
    
    /* Transitions */
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

/* Reset de base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

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

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-fade-in { animation: fadeIn var(--transition-slow) forwards; }
.animate-fade-up { animation: fadeInUp var(--transition-slow) forwards; }

/* ==========================================================================
   BOUTONS ET ÉLÉMENTS INTERACTIFS
   ========================================================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-family: var(--font-heading);
    cursor: pointer;
    border: none;
    text-align: center;
    transition: var(--transition);
}

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

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

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

.btn-accent:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-small {
    padding: 0.4rem 1rem;
    font-size: 0.875rem;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
    display: block;
}

.user-space-nav a {
    border-radius: 8px;
    padding: 0.45rem 0.9rem;
    border: 1px solid var(--border);
    font-weight: 600;
    transition: var(--transition);
}

.user-space-nav a:hover {
    background-color: var(--primary-light);
    color: #fff;
    border-color: var(--primary-light);
}

/* ==========================================================================
   HEADER ET NAVIGATION
   ========================================================================== */

.main-header {
    background-color: var(--bg-white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.top-bar {
    background-color: var(--primary);
    color: var(--bg-white);
    font-size: 0.8rem;
    padding: 0.5rem 0;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.contact-info span {
    margin-right: 1.5rem;
}

.auth-links a {
    margin-left: 1rem;
    color: var(--bg-white);
}

.navbar {
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--primary);
}

.logo .accent {
    color: var(--accent);
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    font-weight: 600;
    color: var(--text-dark);
}

.nav-menu a:hover {
    color: var(--accent);
}



.nav-menu2 {
    padding-left: 10%;
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-menu2 a {
    font-weight: 400;
    color: var(--text-muted);
}

.nav-menu2 a:hover {
    color: var(--accent);
}

.mobile-toggle {
    display: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
}

.mobile-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-toggle.open span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.mobile-toggle.open span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.open span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

.nav-menu.open,
.nav-menu2.open {
    display: flex !important;
}

@media (max-width: 768px) {
    .navbar .container { flex-wrap: wrap; }
    .nav-menu,
    .nav-menu2 {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0.75rem;
        margin-top: 0.8rem;
        background: var(--bg-white);
        padding: 0.8rem;
        border: 1px solid var(--border);
        border-radius: 10px;
    }

    .nav-menu li,
    .nav-menu2 li {
        width: 100%;
    }

    .nav-menu a,
    .nav-menu2 a {
        padding: 0.65rem 0.7rem;
        display: block;
        border-radius: 8px;
    }

    .mobile-toggle { display: flex; }
    .btn-nav-contact { width: 100%; text-align: center; }
}

.btn-nav-contact {
    border: 2px solid var(--accent);
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    color: var(--accent) !important;
}

.btn-nav-contact:hover {
    background-color: var(--accent);
    color: var(--bg-white) !important;
}

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

.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--bg-white);
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: -10%;
    width: 120%;
    height: 100px;
    background: var(--bg-light);
    transform: rotate(-2deg);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content h2 {
    color: var(--bg-white);
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.hero-btns {
    display: flex;
    gap: 1rem;
}

.hero-image {
    position: relative;
    z-index: 1;
}

.hero-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

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

section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--accent);
    border-radius: 2px;
}

/* ==========================================================================
   GRILLE D'OFFRES (CARTES)
   ========================================================================== */

.offers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.offer-card {
    background-color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.offer-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.offer-card .icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
}

.offer-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.offer-card p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

/* ==========================================================================
   SIMULATEUR DE PRÊT
   ========================================================================== */

.simulator-container {
    background-color: var(--bg-white);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-lg);
    max-width: 900px;
    margin: 0 auto;
}

.simulator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.sim-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sim-results {
    background-color: var(--primary);
    color: var(--bg-white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.sim-results .monthly-amount {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--accent);
    margin: 1rem 0;
}

.sim-results .details {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Form Groups */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--primary);
}

.form-group input, .form-group select, .form-group textarea {
    padding: 0.8rem 1rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-light);
}

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

.main-footer {
    background-color: var(--primary);
    color: var(--bg-white);
    padding: 5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-col h3, .footer-col h4 {
    color: var(--bg-white);
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul li a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.7;
}

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

@media (max-width: 992px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-btns { justify-content: center; }
    .hero-content h2 { font-size: 2.5rem; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .simulator-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .top-bar {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
        padding: 0.5rem 0;
    }

    .top-bar .container {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .contact-info {
        display: flex;
        flex-direction: column;
        gap: 0.2rem;
        text-align: center;
    }

    #google_translate_element {
        width: 100%;
        justify-content: center;
    }

    .auth-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.4rem;
    }

    .nav-menu { display: none; } /* À remplacer par un menu mobile */
    .section-header h2 { font-size: 2rem; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
}