/* ==========================================================================
   AG TEKNİK İKLİMLENDİRME - ULTRA LIGHTWEIGHT MODERN CSS (PageSpeed 90+ Optimized)
   ========================================================================== */

:root {
    /* Color Palette - Premium Climate/HVAC Blue & Vibrant Accents */
    --primary: #0a3d62;
    --primary-dark: #072a44;
    --primary-light: #1e6091;
    --accent: #00b4d8;
    --accent-glow: rgba(0, 180, 216, 0.25);
    --secondary: #ff7b00;
    --secondary-dark: #e86000;
    --success: #2ec4b6;
    --danger: #e63946;
    
    /* Backgrounds & Neutrals */
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-alt: #f1f5f9;
    --bg-dark: #0f172a;
    --border-color: #e2e8f0;
    --border-focus: #00b4d8;

    /* Text Colors */
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;

    /* Shadows & Radii */
    --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 -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.25s ease-in-out;
}

/* Base & Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-main);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    padding-bottom: 70px; /* Space for mobile sticky action bar */
}

@media (min-width: 992px) {
    body {
        padding-bottom: 0;
    }
}

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

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

img, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

ul, ol {
    list-style: none;
}

button, input, select, textarea {
    font: inherit;
    color: inherit;
}

/* Accessibility */
.skip-to-content {
    position: absolute;
    top: -100px;
    left: 20px;
    background: var(--primary);
    color: #fff;
    padding: 10px 16px;
    z-index: 9999;
    border-radius: var(--radius-sm);
    transition: top var(--transition-fast);
}
.skip-to-content:focus {
    top: 20px;
}

/* Layout Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

.text-center { text-align: center; }
.bg-light { background-color: var(--bg-alt); }

/* Typography Helpers */
.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section {
    padding: 4.5rem 0;
}

.section-header {
    margin-bottom: 3rem;
}

.section-badge {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary);
    background: rgba(10, 61, 98, 0.08);
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.25;
    color: var(--primary-dark);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 720px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    white-space: nowrap;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.95rem 1.85rem;
    font-size: 1.0625rem;
}

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

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(10, 61, 98, 0.25);
}
.btn-primary:hover {
    background-color: var(--primary-light);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(10, 61, 98, 0.35);
}

.btn-secondary {
    background-color: var(--secondary);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(255, 123, 0, 0.25);
}
.btn-secondary:hover {
    background-color: var(--secondary-dark);
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--primary);
}
.btn-outline:hover {
    border-color: var(--primary);
    background-color: rgba(10, 61, 98, 0.05);
}

.btn-warning {
    background-color: #f59e0b;
    color: #ffffff;
}

/* Top Info Bar */
.top-bar {
    background-color: var(--primary-dark);
    color: #e2e8f0;
    font-size: 0.8125rem;
    padding: 0.45rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.top-bar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.top-bar-left, .top-bar-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.top-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.top-phone-link {
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.top-phone-link:hover { color: var(--accent); }
.top-whatsapp-link {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    color: #25d366;
}

@media (max-width: 768px) {
    .top-bar { display: none; }
}

/* Header & Main Nav */
.site-header {
    background: #ffffff;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-fast);
}
.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

/* Logo */
.brand-logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    line-height: 1;
}
.brand-logo-img {
    height: 48px;
    width: auto;
    max-height: 52px;
    display: block;
    object-fit: contain;
    transition: transform var(--transition-fast);
}
.brand-logo:hover .brand-logo-img {
    transform: scale(1.02);
}

/* Navigation Links */
.main-nav {
    display: flex;
    align-items: center;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}
.nav-item {
    position: relative;
}
.nav-link {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 0;
}
.nav-link:hover {
    color: var(--accent);
}

/* Dropdowns */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #ffffff;
    min-width: 250px;
    padding: 0.75rem 0;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    display: none;
    z-index: 100;
}
.dropdown-menu li a {
    display: block;
    padding: 0.6rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
    transition: background var(--transition-fast);
}
.dropdown-menu li a:hover {
    background: var(--bg-alt);
    color: var(--primary);
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu {
    display: block;
    animation: fadeInMenu 0.2s ease-out;
}

@keyframes fadeInMenu {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}
.mobile-menu-toggle .bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-main);
    margin: 5px 0;
    transition: all var(--transition-fast);
}

@media (max-width: 991px) {
    .btn-header-cta { display: none; }
    .mobile-menu-toggle { display: block; }
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        box-shadow: var(--shadow-lg);
        padding: 1.5rem;
        display: none;
        flex-direction: column;
        border-top: 1px solid var(--border-color);
    }
    .main-nav.active {
        display: flex;
    }
    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 0.5rem;
    }
    .nav-item { width: 100%; }
    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        padding-left: 1rem;
        display: block;
    }
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 4.5rem 0 5rem;
    background: linear-gradient(180deg, #ffffff 0%, var(--bg-alt) 100%);
    overflow: hidden;
}
.hero-bg-shapes .shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    pointer-events: none;
}
.shape-1 {
    width: 400px;
    height: 400px;
    background: rgba(0, 180, 216, 0.15);
    top: -100px;
    right: -100px;
}
.shape-2 {
    width: 350px;
    height: 350px;
    background: rgba(10, 61, 98, 0.08);
    bottom: -50px;
    left: -50px;
}

.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--primary);
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.25rem;
}
.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
    animation: pulse 1.8s infinite;
}
@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--primary-dark);
    margin-bottom: 1.25rem;
}
.hero-subtitle {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.hero-trust-pills {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.trust-pill {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
}
.trust-pill svg {
    color: var(--success);
}

/* Quick Quote Card (Hero & Detail Pages) */
.quick-quote-card {
    background: #ffffff;
    padding: 2.25rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(226, 232, 240, 0.8);
}
.quick-badge {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--secondary);
    letter-spacing: 0.05em;
}
.quick-quote-header h3 {
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin: 0.25rem 0 0.5rem;
}
.quick-quote-header p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.15rem;
}
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
    color: var(--text-main);
}
.form-group .required {
    color: var(--danger);
}
.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    background: #ffffff;
    font-size: 0.9375rem;
    color: var(--text-main);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 768px) {
    .form-grid { grid-template-columns: 1fr; }
}

.mb-3 { margin-bottom: 1rem; }

/* Brands Grid */
.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 1.75rem;
}
.brand-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}
.brand-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 180, 216, 0.4);
}
.brand-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}
.brand-img-box {
    width: 100%;
    height: 210px;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 1.25rem;
    background: #f1f5f9;
    border: 1px solid var(--border-color);
}
.brand-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.brand-card:hover .brand-img {
    transform: scale(1.05);
}
.brand-detail-img-showcase {
    width: 100%;
    max-height: 420px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: 1.5rem 0 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}
.brand-showcase-img {
    width: 100%;
    height: 100%;
    max-height: 420px;
    object-fit: cover;
}
.why-photo-banner {
    width: 100%;
    height: 260px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 1.75rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}
.why-technician-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.brand-badge {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    background: rgba(10, 61, 98, 0.08);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
}
.brand-energy {
    font-size: 0.75rem;
    font-weight: 800;
    color: #15803d;
    background: #dcfce7;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
}
.brand-name {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 0.25rem;
}
.brand-origin {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.75rem;
}
.brand-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    flex-grow: 1;
}
.brand-highlights {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.25rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-main);
}
.b-feat {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.b-feat svg { color: var(--success); }
.brand-card-footer {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: auto;
}
.brand-features-mini {
    margin-bottom: 1.25rem;
}
.brand-features-mini li {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}
.brand-features-mini li svg { color: var(--success); }

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
    gap: 1.75rem;
}
.service-card {
    background: #ffffff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(10, 61, 98, 0.2);
}
.service-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}
.service-icon-box {
    width: 54px;
    height: 54px;
    background: linear-gradient(135deg, rgba(10, 61, 98, 0.08) 0%, rgba(0, 180, 216, 0.15) 100%);
    color: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}
.service-badge {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--secondary);
    background: rgba(255, 123, 0, 0.1);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
}
.service-img-box {
    width: 100%;
    height: 190px;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 1.25rem;
    background: #f1f5f9;
    border: 1px solid var(--border-color);
    display: block;
}
.service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.service-card:hover .service-img {
    transform: scale(1.05);
}
.service-detail-img-showcase {
    width: 100%;
    max-height: 420px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: 1.5rem 0 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}
.service-showcase-img {
    width: 100%;
    height: 100%;
    max-height: 420px;
    object-fit: cover;
}
.service-title {
    font-size: 1.3125rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}
.service-desc {
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}
.service-features-mini {
    margin-bottom: 1.5rem;
}
.service-features-mini li {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}
.service-features-mini li svg { color: var(--success); }
.service-card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: auto;
}
.service-link {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.service-link:hover { color: var(--accent); }

/* Why Section */
.why-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
    align-items: center;
}
.why-lead {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}
.why-features-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.why-feature-item {
    display: flex;
    gap: 1.25rem;
}
.why-icon {
    width: 44px;
    height: 44px;
    background: rgba(0, 180, 216, 0.12);
    color: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.why-feature-item h4 {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 0.25rem;
}
.why-feature-item p {
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.stats-card {
    background: var(--primary-dark);
    color: #ffffff;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    box-shadow: var(--shadow-xl);
    margin-bottom: 1.75rem;
}
.stat-number {
    display: block;
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.35rem;
}
.stat-label {
    font-size: 0.875rem;
    color: #cbd5e1;
    font-weight: 600;
}
.emergency-cta-banner {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: #ffffff;
    padding: 1.75rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}
.emergency-cta-banner h3 {
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
}
.emergency-cta-banner p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Regions Grid */
.regions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}
.region-card {
    background: #ffffff;
    padding: 1.75rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}
.region-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.region-header h4 {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--primary-dark);
}
.region-badge {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--success);
    background: rgba(46, 196, 182, 0.1);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
}
.region-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* FAQ Accordion */
.faq-container {
    max-width: 860px;
}
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.faq-item {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-fast);
}
.faq-item.active {
    border-color: var(--border-focus);
    box-shadow: var(--shadow-md);
}
.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--primary-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}
.faq-icon {
    transition: transform var(--transition-normal);
    color: var(--primary);
    flex-shrink: 0;
}
.faq-item.active .faq-icon {
    transform: rotate(180deg);
}
.faq-answer {
    padding: 0 1.5rem 1.25rem;
    color: var(--text-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
    display: none;
}
.faq-item.active .faq-answer {
    display: block;
}

/* Breadcrumb */
.breadcrumb-nav {
    background: var(--bg-alt);
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border-color);
}
.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.875rem;
}
.breadcrumb-item a {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--text-muted);
    font-weight: 600;
}
.breadcrumb-item a:hover { color: var(--primary); }
.breadcrumb-item.active {
    color: var(--primary);
    font-weight: 700;
}
.breadcrumb-separator {
    color: var(--text-light);
}

/* Page Header */
.page-header-section {
    padding: 3.5rem 0;
    background: linear-gradient(180deg, #ffffff 0%, var(--bg-alt) 100%);
    border-bottom: 1px solid var(--border-color);
}
.page-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}
.page-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 750px;
    margin: 0 auto;
}

/* Service / Brand Detail Hero */
.service-detail-hero, .brand-detail-hero {
    padding: 3.5rem 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
}
.service-hero-grid, .brand-hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
    align-items: start;
}
.service-lead, .brand-lead {
    font-size: 1.125rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}
.service-highlight-box {
    display: flex;
    gap: 0.75rem;
    background: rgba(0, 180, 216, 0.08);
    border-left: 4px solid var(--accent);
    padding: 1rem 1.25rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-bottom: 2rem;
    color: var(--primary-dark);
    font-weight: 600;
    font-size: 0.9375rem;
}
.service-highlight-box svg { color: var(--accent); flex-shrink: 0; }
.service-hero-actions, .brand-hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.brand-badges-wrap {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}
.brand-energy-pill {
    font-size: 0.75rem;
    font-weight: 800;
    color: #15803d;
    background: #dcfce7;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
}
.brand-tagline-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
}
.brand-quick-specs {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: var(--bg-alt);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
}
.q-spec {
    display: flex;
    justify-content: space-between;
    font-size: 0.9375rem;
}
.q-label { color: var(--text-muted); }
.q-val { font-weight: 700; color: var(--primary-dark); }

/* Features Checklist */
.features-checklist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.25rem;
}
.feature-item-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #ffffff;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}
.feature-item-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #dcfce7;
    color: #15803d;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.feature-item-text {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-main);
}

/* Process Steps */
.process-steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}
.step-card {
    background: #ffffff;
    padding: 2rem 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: relative;
}
.step-num {
    display: inline-block;
    font-size: 2.25rem;
    font-weight: 900;
    color: rgba(0, 180, 216, 0.3);
    line-height: 1;
    margin-bottom: 0.75rem;
}
.step-title {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}
.step-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Brand Models Table Grid */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}
.model-spec-card {
    background: #ffffff;
    padding: 1.75rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
}
.model-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}
.model-capacity-badge {
    font-size: 0.8125rem;
    font-weight: 800;
    color: var(--primary);
    background: rgba(10, 61, 98, 0.1);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
}
.model-energy-badge {
    font-size: 0.8125rem;
    font-weight: 800;
    color: #15803d;
    background: #dcfce7;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
}
.model-title {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 1.25rem;
}
.model-specs-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    flex-grow: 1;
}
.m-spec-row {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 0.4rem;
}
.spec-k { color: var(--text-muted); }
.spec-v { color: var(--primary-dark); }

/* Why Brand Box */
.why-brand-box {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}
.why-brand-text h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 0.75rem;
}
.why-brand-text p {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 680px;
}

/* Other Services / Brands Pills */
.other-services-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}
.other-service-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #ffffff;
    border: 1.5px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--primary);
    transition: all var(--transition-fast);
}
.other-service-pill:hover {
    border-color: var(--primary);
    background: var(--primary);
    color: #ffffff;
    transform: translateY(-2px);
}

/* BTU Guide Cards */
.btu-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}
.btu-card {
    background: #ffffff;
    padding: 1.75rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    text-align: center;
}
.btu-val {
    display: inline-block;
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--secondary);
    background: rgba(255, 123, 0, 0.1);
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.75rem;
}
.btu-card h4 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 0.5rem;
}
.btu-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Contact Page Layout */
.contact-layout-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
    margin-bottom: 3.5rem;
}
.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.contact-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    display: flex;
    gap: 1.25rem;
    box-shadow: var(--shadow-sm);
}
.contact-card-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.icon-phone { background: rgba(10, 61, 98, 0.1); color: var(--primary); }
.icon-whatsapp { background: rgba(37, 211, 102, 0.15); color: #25d366; }
.icon-location { background: rgba(0, 180, 216, 0.15); color: var(--accent); }

.contact-card-body h3 {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 0.25rem;
}
.contact-card-body p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}
.contact-highlight-link {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--primary);
    display: inline-block;
    margin-bottom: 0.35rem;
}
.sub-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--success);
    background: rgba(46, 196, 182, 0.1);
    padding: 0.2rem 0.55rem;
    border-radius: var(--radius-full);
}

.map-wrapper {
    margin-top: 2rem;
}
.map-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}
.map-header {
    margin-bottom: 1rem;
}
.map-header h3 {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary-dark);
}
.map-header p {
    font-size: 0.875rem;
    color: var(--text-muted);
}
.map-frame-box {
    border-radius: var(--radius-md);
    overflow: hidden;
}

/* Site Footer */
.site-footer {
    background-color: var(--bg-dark);
    color: #94a3b8;
    margin-top: auto;
}
.footer-top {
    padding: 4.5rem 0 3rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 3rem;
}
.footer-logo {
    margin-bottom: 1.25rem;
}
.footer-brand-logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    line-height: 1;
}
.footer-logo-img {
    height: 52px;
    width: auto;
    max-height: 56px;
    display: block;
    object-fit: contain;
    transition: transform var(--transition-fast);
}
.footer-brand-logo:hover .footer-logo-img {
    transform: scale(1.02);
}
.footer-about-text {
    font-size: 0.875rem;
    line-height: 1.7;
    color: #94a3b8;
    margin-bottom: 1.25rem;
}
.footer-badges {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.f-badge {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent);
    background: rgba(0, 180, 216, 0.1);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
}
.footer-title {
    font-size: 1.0625rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 1.25rem;
    letter-spacing: -0.01em;
}
.footer-links li {
    margin-bottom: 0.65rem;
}
.footer-links a {
    font-size: 0.875rem;
    color: #94a3b8;
    transition: color var(--transition-fast);
}
.footer-links a:hover {
    color: #ffffff;
    padding-left: 4px;
}
.footer-regions-text {
    font-size: 0.8125rem;
    color: #64748b;
    line-height: 1.5;
}
.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: #94a3b8;
    margin-bottom: 0.85rem;
}
.footer-contact-list li svg {
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 3px;
}
.footer-contact-list a {
    color: #ffffff;
    font-weight: 700;
}
.footer-bottom {
    background: #090e1a;
    padding: 1.25rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.8125rem;
}
.footer-bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.footer-bottom-links {
    display: flex;
    gap: 1.5rem;
}
.footer-bottom-links a {
    color: #64748b;
}
.footer-bottom-links a:hover { color: #ffffff; }

/* Mobile Sticky Action Bar (Fixed Bottom) */
.mobile-sticky-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: #ffffff;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.12);
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    z-index: 999;
    border-top: 1px solid var(--border-color);
}
.sticky-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 0.75rem;
    font-weight: 700;
    text-decoration: none;
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 4px 0;
}
.sticky-btn-call {
    color: var(--primary);
    border-right: 1px solid var(--border-color);
}
.sticky-btn-whatsapp {
    color: #25d366;
    border-right: 1px solid var(--border-color);
}
.sticky-btn-lead {
    color: var(--secondary);
}

@media (min-width: 992px) {
    .mobile-sticky-bar { display: none; }
}

/* Modal Window */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
}
.modal-backdrop.show {
    display: flex;
    opacity: 1;
}
.modal-dialog {
    width: 100%;
    max-width: 580px;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}
.modal-backdrop.show .modal-dialog {
    transform: translateY(0);
}
.modal-content {
    background: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 2rem;
    max-height: 90vh;
    overflow-y: auto;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}
.modal-badge {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.modal-title {
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--primary-dark);
}
.modal-close {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast);
}
.modal-close:hover { color: var(--danger); }
.modal-footer-note {
    font-size: 0.75rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 1rem;
    text-align: center;
    justify-content: center;
}

/* Alerts */
.flash-alert {
    padding: 0.75rem 0;
    font-size: 0.9375rem;
    font-weight: 600;
}
.flash-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.flash-success {
    background: #dcfce7;
    color: #15803d;
    border-bottom: 1px solid #bbf7d0;
}
.flash-danger {
    background: #fee2e2;
    color: #b91c1c;
    border-bottom: 1px solid #fecaca;
}
.flash-close {
    background: transparent;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: inherit;
}

.form-feedback {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
}
.form-feedback.success {
    background: #dcfce7;
    color: #15803d;
    border: 1px solid #bbf7d0;
}
.form-feedback.error {
    background: #fee2e2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

/* Error Pages */
.error-page-section {
    padding: 6rem 0;
}
.error-badge {
    display: inline-block;
    font-size: 1.125rem;
    font-weight: 900;
    color: var(--primary);
    background: rgba(10, 61, 98, 0.08);
    padding: 0.4rem 1.25rem;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}
.error-badge-danger {
    color: var(--danger);
    background: rgba(230, 57, 70, 0.1);
}
.error-title {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}
.error-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2rem;
}
.error-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}
.error-popular-services h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 1rem;
}
.popular-pills {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.popular-pills a {
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}
.popular-pills a:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 991px) {
    .hero-container, .why-grid, .service-hero-grid, .brand-hero-grid, .contact-layout-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .hero-title { font-size: 2.25rem; }
    .why-brand-box { flex-direction: column; text-align: center; }
}

@media (max-width: 640px) {
    .brand-logo-img { height: 42px; }
    .footer-logo-img { height: 46px; }
    .section { padding: 3rem 0; }
    .section-title { font-size: 1.75rem; }
    .hero-title { font-size: 1.875rem; }
    .footer-grid { grid-template-columns: 1fr; }
    .quick-quote-card { padding: 1.5rem; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
}