/* ==========================================================================
   Design System - Climatisation Alès (Fabien Di Cataldo)
   Refonte Graphique Premium 2026
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Thème Clair (Par défaut) */
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fc;
    --bg-card: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.75);
    --border-glass: rgba(255, 255, 255, 0.4);
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --color-primary: #0250c5; /* Bleu pro */
    --color-primary-rgb: 2, 80, 197;
    --color-secondary: #f97316; /* Orange thermique */
    --color-secondary-rgb: 249, 115, 22;
    
    --color-cooling: #0ea5e9;
    --color-heating: #f97316;
    
    --border-color: #e2e8f0;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 16px;
}

[data-theme="dark"] {
    /* Thème Sombre */
    --bg-primary: #090d16;
    --bg-secondary: #0f1524;
    --bg-card: #182035;
    --bg-glass: rgba(15, 21, 36, 0.7);
    --border-glass: rgba(255, 255, 255, 0.06);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-primary: #3b82f6;
    --color-primary-rgb: 59, 130, 246;
    --color-secondary: #fb923c;
    --color-secondary-rgb: 251, 146, 60;
    
    --color-cooling: #38bdf8;
    --color-heating: #fb923c;
    
    --border-color: #212c45;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
}

/* ==========================================================================
   Bases & Reset
   ========================================================================== */

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.4s ease, color 0.4s ease;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

p {
    color: var(--text-secondary);
}

main {
    flex: 1;
}

a {
    transition: var(--transition-smooth);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ==========================================================================
   Structure & Navbar
   ========================================================================== */

.contact-bar {
    background: linear-gradient(90deg, #111827 0%, #1f2937 100%);
    color: #ffffff;
    font-size: 0.9rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.contact-bar a.btn-outline-light:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.contact-bar .btn-orange-header {
    border: 1px solid var(--color-secondary);
    color: var(--color-secondary);
    transition: var(--transition-smooth);
}

.contact-bar .btn-orange-header:hover {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: #111827;
    transform: translateY(-1px);
}


.navbar {
    background: var(--bg-glass) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-glass);
    transition: background-color 0.4s ease, border-color 0.4s ease;
}

.navbar-brand span {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    letter-spacing: -0.01em;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-cooling) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    margin: 0 0.1rem;
    transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-primary) !important;
    background-color: rgba(var(--color-primary-rgb), 0.06);
}

/* Theme Switcher Button */
.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    margin-left: 10px;
}

.theme-toggle-btn:hover {
    background-color: rgba(var(--color-primary-rgb), 0.08);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: scale(1.05);
}

/* Dropdown Menu */
.dropdown-menu {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
}

.dropdown-item {
    color: var(--text-secondary);
    border-radius: 8px;
    padding: 0.5rem 1rem;
}

.dropdown-item:hover {
    background-color: rgba(var(--color-primary-rgb), 0.06);
    color: var(--color-primary);
}

/* ==========================================================================
   Hero & Headers
   ========================================================================== */

.hero {
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.9) 0%, rgba(17, 24, 39, 0.95) 100%), 
                url('https://images.unsplash.com/photo-1621905251189-08b45d6a269e?ixlib=rb-4.0.3&auto=format&fit=crop&w=1470&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 120px 0 100px 0;
    text-align: center;
    position: relative;
}

.page-header {
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.95) 0%, rgba(15, 21, 36, 0.95) 100%);
    color: white;
    padding: 70px 0;
    text-align: center;
    border-bottom: 3px solid var(--color-primary);
}

.hero p, .page-header p {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* Badges de certification */
.certif-badge {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
    margin: 6px;
    display: inline-block;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: var(--transition-smooth);
}

.certif-badge i {
    color: var(--color-cooling);
    margin-right: 8px;
}

.certif-badge:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.4);
}

/* ==========================================================================
   Composants Cards & Services
   ========================================================================== */

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(var(--color-primary-rgb), 0.3);
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2.5rem 2rem;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.service-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-cooling) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: var(--transition-smooth);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Gradients Métalliques ou Technologiques */
.bg-metal-gradient {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(var(--color-primary-rgb), 0.05) 100%);
}

.bg-hero-gradient {
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.1) 0%, rgba(var(--color-secondary-rgb), 0.05) 100%);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-cooling) 100%);
    border: none;
    padding: 0.8rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.3);
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-cooling) 0%, var(--color-primary) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.4);
}

.btn-outline-primary {
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition-smooth);
}

.btn-outline-primary:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.2);
}

/* ==========================================================================
   Calculateur d'Aides (aides-primes.php)
   ========================================================================== */

.calc-select, .form-control {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: var(--transition-smooth);
}

.calc-select:focus, .form-control:focus {
    background-color: var(--bg-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.15);
    color: var(--text-primary);
}

.result-card {
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.05) 0%, rgba(var(--color-primary-rgb), 0.01) 100%);
    border: 1px solid rgba(var(--color-primary-rgb), 0.2);
    border-radius: var(--border-radius);
    padding: 2rem;
}

.result-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

/* ==========================================================================
   Accordéons FAQ (faq.php)
   ========================================================================== */

.accordion-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color) !important;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.accordion-button {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    font-weight: 600;
    padding: 1.25rem 1.5rem;
    border: none !important;
    transition: var(--transition-smooth);
}

.accordion-button:not(.collapsed) {
    box-shadow: none;
    border-bottom: 1px solid var(--border-color) !important;
    background-color: rgba(var(--color-primary-rgb), 0.03) !important;
    color: var(--color-primary) !important;
}

.accordion-button::after {
    filter: grayscale(1) invert(var(--theme-invert, 0));
}

[data-theme="dark"] .accordion-button::after {
    filter: invert(1);
}

.accordion-body {
    color: var(--text-secondary);
    background-color: var(--bg-card);
    padding: 1.5rem;
}

/* ==========================================================================
   Galerie de Réalisations (realisations.php)
   ========================================================================== */

.gallery-filter-btn {
    border-radius: 50px;
    padding: 0.5rem 1.5rem;
}

.hover-zoom {
    overflow: hidden;
    border-radius: var(--border-radius);
}

.hover-zoom .card-img-top {
    transition: transform 0.5s ease;
}

.hover-zoom:hover .card-img-top {
    transform: scale(1.08);
}

.hover-zoom .overlay {
    background: rgba(var(--color-primary-rgb), 0.4);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: var(--transition-smooth);
}

.hover-zoom:hover .overlay {
    opacity: 1;
}

/* Lightbox Custom overlay styling */
#lightboxModal .modal-content {
    background-color: transparent !important;
}

#lightboxModal .btn-close {
    filter: invert(1);
    background-color: rgba(0,0,0,0.5);
    border-radius: 50%;
    padding: 10px;
}

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

.prep-animation {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animated-fade-in-up {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.4s ease forwards;
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
    background-color: #0b0f19 !important;
    border-top: 1px solid var(--border-color);
    color: #94a3b8;
}

footer h5 {
    color: #ffffff !important;
}

footer a {
    color: #94a3b8;
    text-decoration: none;
}

footer a:hover {
    color: var(--color-cooling);
}

footer hr {
    border-color: #1e293b;
}

/* responsive adjustments */
@media (max-width: 991.98px) {
    .hero {
        padding: 80px 0 60px 0;
    }
}