/* Reset and Base Variables */
:root {
    --bg-color: #060606;
    --surface: #111112;
    --surface-hover: #1A1A1C;
    --text-primary: #F2F2F2;
    --text-secondary: #8E8F94;
    --accent: #BE9A60; 
    --accent-hover: #A3824E;
    --white: #FFFFFF;
    
    --font-heading: 'Clash Display', sans-serif;
    --font-body: 'General Sans', sans-serif;
    
    --space-sm: clamp(0.5rem, 1vw, 1rem);
    --space-md: clamp(1rem, 2vw, 1.5rem);
    --space-lg: clamp(2rem, 4vw, 3rem);
    --space-xl: clamp(4rem, 8vw, 6rem);
    
    --trans-fast: 0.2s ease;
    --trans-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-color); color: var(--text-primary);
    font-family: var(--font-body); font-size: 16px; line-height: 1.6;
    overflow-x: hidden; -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 500; line-height: 1.1; }
.section-title { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: var(--space-lg); }
.text-center { text-align: center; }

.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 var(--space-md); }
.container-sm { max-width: 800px; }
.p-section { padding: var(--space-xl) 0; }
.mt-grid { margin-top: var(--space-lg); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 1rem 2rem; font-family: var(--font-body); font-size: 1rem; font-weight: 500;
    text-decoration: none; cursor: pointer; border: none; transition: var(--trans-fast); border-radius: 4px;
}
.btn-primary { background-color: var(--accent); color: var(--bg-color); }
.btn-primary:hover { background-color: var(--accent-hover); transform: translateY(-2px); }
.btn-outline { background-color: transparent; color: var(--text-primary); border: 1px solid rgba(255,255,255,0.2); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.w-100 { width: 100%; }
.mt-auto { margin-top: auto; }

/* Navbar */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; display: flex; justify-content: space-between; align-items: center;
    padding: var(--space-md) var(--space-lg); background: rgba(6, 6, 6, 0.8); backdrop-filter: blur(12px);
    z-index: 100; border-bottom: 1px solid rgba(255,255,255,0.05);
}
.logo { font-family: var(--font-heading); font-size: 1.5rem; font-weight: 600; letter-spacing: 2px; }
.nav-links { display: flex; gap: var(--space-lg); }
.nav-links a { color: var(--text-secondary); text-decoration: none; transition: var(--trans-fast); }
.nav-links a:hover { color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: var(--space-lg); }
.nav-right .phone { color: var(--white); text-decoration: none; font-weight: 500; transition: var(--trans-fast); }
.nav-right .phone:hover { color: var(--accent); }

/* Hero */
.hero { min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr; align-items: center; padding-top: 100px; gap: var(--space-lg); max-width: 1440px; margin: 0 auto; position: relative; }
.hero-content { padding-left: var(--space-lg); z-index: 2; }
.hero-title { font-size: clamp(2.5rem, 6vw, 4.5rem); margin-bottom: var(--space-md); }
.hero-subtitle { font-size: clamp(1rem, 1.5vw, 1.25rem); color: var(--text-secondary); max-width: 500px; margin-bottom: var(--space-lg); }
.hero-actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.hero-visual { height: 100%; position: relative; }
.image-wrapper { width: 100%; height: 80vh; overflow: hidden; position: relative; border-radius: 4px 0 0 4px; }
.image-wrapper img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.05); transition: transform 10s ease-out; }
.hero:hover .image-wrapper img { transform: scale(1); }
.image-wrapper .overlay { position: absolute; inset: 0; background: linear-gradient(90deg, var(--bg-color) 0%, transparent 100%); }

/* Benefits */
.benefits-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-md); }
.card { background: var(--surface); padding: var(--space-lg); border: 1px solid rgba(255,255,255,0.03); transition: var(--trans-fast); position: relative; overflow: hidden; border-radius: 8px;}
.card::before { content: ''; position: absolute; top: 0; left: 0; width: 0; height: 3px; background-color: var(--accent); transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1); z-index: 5; }
.card:hover { background: var(--surface-hover); transform: translateY(-5px); border-color: rgba(190, 154, 96, 0.2); }
.card:hover::before { width: 100%; }
.card-num { font-family: var(--font-heading); font-size: 3rem; color: rgba(255,255,255,0.05); position: absolute; top: var(--space-md); right: var(--space-md); font-weight: 600; }
.card h3 { font-size: 1.5rem; margin-bottom: var(--space-sm); color: var(--white); }
.card p { color: var(--text-secondary); }

/* Tariffs */
.subtitle-desc { color: var(--text-secondary); margin-bottom: var(--space-lg); font-size: 1.125rem; }
.tariffs-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: var(--space-md); }
.tariff-card { 
    background: var(--surface); padding: var(--space-xl) var(--space-lg); border: 1px solid rgba(255,255,255,0.05); 
    border-radius: 8px; transition: var(--trans-fast); display: flex; flex-direction: column; position: relative;
}
.tariff-card:hover { border-color: var(--accent); transform: translateY(-5px); }
.tariff-card.popular { border-color: var(--accent); background: radial-gradient(circle at top right, rgba(190,154,96,0.1), var(--surface) 50%); }
.badge { position: absolute; top: 0; left: 50%; transform: translate(-50%, -50%); background: var(--accent); color: var(--bg-color); padding: 4px 16px; border-radius: 20px; font-weight: 600; font-size: 0.85rem; }
.tariff-card h3 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.t-price { font-family: var(--font-heading); font-size: 1.5rem; color: var(--accent); margin-bottom: var(--space-md); border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 1rem;}
.t-features { list-style: none; margin-bottom: var(--space-lg); }
.t-features li { margin-bottom: 0.8rem; color: var(--text-secondary); position: relative; padding-left: 1.5rem; }
.t-features li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: bold; }

/* Before / After Slider */
.ba-container { position: relative; width: 100%; aspect-ratio: 16 / 9; border-radius: 8px; overflow: hidden; user-select: none; border: 1px solid rgba(255,255,255,0.1); }
.ba-image { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.ba-image img { width: 100%; height: 100%; object-fit: cover; pointer-events: none; }
.ba-before { clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%); }
.ba-slider { position: absolute; top: 0; left: 50%; width: 2px; height: 100%; background-color: var(--accent); transform: translateX(-50%); pointer-events: none; }
.ba-slider-handle { 
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 44px; height: 44px; 
    background-color: var(--white); border-radius: 50%; display: flex; align-items: center; justify-content: space-between; 
    padding: 0 4px; color: var(--bg-color); box-shadow: 0 0 20px rgba(0,0,0,0.5); z-index: 10; 
}
.ba-slider-handle svg { width: 14px; height: 14px; }

/* Calculator */
.calc-container { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: center; }
.calc-info .calc-desc { color: var(--text-secondary); font-size: 1.125rem; }
.calc-panel { background: var(--surface); padding: var(--space-lg); border: 1px solid rgba(255,255,255,0.05); border-radius: 8px;}
.form-group { margin-bottom: var(--space-lg); }
.form-group label { display: block; margin-bottom: var(--space-sm); color: var(--text-secondary); }
#area-val { color: var(--white); font-weight: 500; font-family: var(--font-heading); font-size: 1.2rem; }
input[type=range] { -webkit-appearance: none; width: 100%; background: transparent; }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; height: 24px; width: 24px; border-radius: 50%; background: var(--accent); cursor: pointer; margin-top: -10px; }
input[type=range]::-webkit-slider-runnable-track { width: 100%; height: 4px; cursor: pointer; background: rgba(255,255,255,0.1); border-radius: 2px; }
.radio-group { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.radio-btn { flex: 1; min-width: 120px; cursor: pointer; }
.radio-btn input { display: none; }
.radio-btn span { display: block; text-align: center; padding: 0.75rem 1rem; border: 1px solid rgba(255,255,255,0.1); color: var(--text-secondary); transition: var(--trans-fast); border-radius: 4px;}
.radio-btn input:checked + span { border-color: var(--accent); color: var(--accent); background: rgba(190, 154, 96, 0.05); }
.calc-result { margin: var(--space-lg) 0; padding-top: var(--space-lg); border-top: 1px solid rgba(255,255,255,0.1); }
.price-label { color: var(--text-secondary); margin-bottom: 0.5rem; }
.price-value { font-family: var(--font-heading); font-size: 2.5rem; color: var(--accent); }

/* Reviews */
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-md); }
.review-card { background: var(--surface); padding: var(--space-lg); border: 1px solid rgba(255,255,255,0.03); border-radius: 8px; transition: var(--trans-fast); }
.review-card:hover { border-color: rgba(190, 154, 96, 0.2); transform: translateY(-3px); }
.review-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.client-avatar { width: 44px; height: 44px; background-color: rgba(190, 154, 96, 0.1); color: var(--accent); font-family: var(--font-heading); font-size: 1.25rem; font-weight: 600; display: flex; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid rgba(190, 154, 96, 0.3); }
.review-header h4 { font-size: 1.1rem; color: var(--white); margin-bottom: 2px; }
.review-header span { font-size: 0.85rem; color: var(--text-secondary); }
.review-text { color: var(--text-secondary); font-style: italic; line-height: 1.7; }

/* FAQ */
.faq-list { border-top: 1px solid rgba(255,255,255,0.05); }
.faq-item { border-bottom: 1px solid rgba(255,255,255,0.05); }
.faq-question { padding: 1.5rem 0; display: flex; justify-content: space-between; align-items: center; cursor: pointer; transition: var(--trans-fast); }
.faq-question:hover { color: var(--accent); }
.faq-question h4 { font-size: 1.25rem; font-weight: 500; margin: 0; }
.faq-icon { width: 24px; height: 24px; position: relative; }
.faq-icon::before, .faq-icon::after { content: ''; position: absolute; background: white; top: 11px; left: 0; width: 20px; height: 2px; transition: transform 0.3s ease; }
.faq-icon::after { transform: rotate(90deg); }
.faq-item.open .faq-icon::after { transform: rotate(0deg); }
.faq-item.open .faq-question { color: var(--accent); }
.faq-item.open .faq-icon::before, .faq-item.open .faq-icon::after { background: var(--accent); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.3s ease; }
.faq-answer p { overflow: hidden; color: var(--text-secondary); margin: 0; padding-bottom: 0; transition: padding 0.3s ease; }
.faq-item.open .faq-answer { grid-template-rows: 1fr; }
.faq-item.open .faq-answer p { padding-bottom: 1.5rem; }

/* Form Card */
.form-card { background: var(--surface); padding: var(--space-xl); text-align: center; border: 1px solid rgba(255,255,255,0.05); border-radius: 8px;}
.form-card p { color: var(--text-secondary); margin-bottom: var(--space-lg); }
.input-wrap { margin-bottom: var(--space-md); }
.input-wrap input { width: 100%; padding: 1rem; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.1); color: var(--white); font-family: var(--font-body); font-size: 1rem; transition: var(--trans-fast); border-radius: 4px;}
.input-wrap input:focus { outline: none; border-color: var(--accent); background: rgba(255,255,255,0.05); }
.terms { margin-top: 1.5rem; font-size: 0.8rem; color: var(--text-secondary); }
.success-message { display: none; margin-top: var(--space-lg); padding: var(--space-md); background: rgba(190, 154, 96, 0.1); border: 1px solid var(--accent); color: var(--white); border-radius: 4px;}

/* Footer */
.footer { padding: var(--space-md) 0; border-top: 1px solid rgba(255,255,255,0.05); padding-bottom: calc(var(--space-md) + 60px); /* offset for mobile btn */ }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; color: var(--text-secondary); font-size: 0.9rem; }
.f-links { display: flex; gap: var(--space-md); flex-wrap: wrap; }
.f-links a { color: var(--text-secondary); text-decoration: none; transition: var(--trans-fast); }
.f-links a:hover { color: var(--accent); }
.footer-disclaimer { margin-top: var(--space-md); font-size: 0.8rem; color: rgba(142,143,148,0.6); text-align: center; }

/* Sticky Mobile CTA */
.sticky-cta { position: fixed; bottom: 0; left: 0; right: 0; padding: var(--space-sm) var(--space-md); background: rgba(6,6,6,0.9); backdrop-filter: blur(10px); border-top: 1px solid rgba(255,255,255,0.05); z-index: 100; display: none; }

/* Animations */
.fade-up { opacity: 0; transform: translateY(30px); transition: var(--trans-slow); }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 900px) {
    .nav-links { display: none; }
    .hero { grid-template-columns: 1fr; text-align: center; padding-top: 110px; min-height: auto; padding-bottom: var(--space-xl); }
    .hero-content { padding-left: var(--space-md); padding-right: var(--space-md); order: 1; }
    .hero-subtitle { margin: 0 auto var(--space-lg); }
    .hero-actions { justify-content: center; }
    /* Show the hero image on mobile as a contained card below the copy,
       instead of hiding it — keeps the visual punch on phones. */
    .hero-visual { display: block; order: 2; height: auto; padding: 0 var(--space-md); }
    .image-wrapper { height: auto; aspect-ratio: 4 / 3; border-radius: 8px; }
    .image-wrapper .overlay { display: none; }
    .image-wrapper img { transform: none; }
    .calc-container { grid-template-columns: 1fr; }
    .calc-info { text-align: center; }
    .ba-container { aspect-ratio: 4 / 3; }
}

@media (max-width: 600px) {
    .nav-right .phone { display: none; }
    .navbar { padding: var(--space-sm) var(--space-md); }
    .form-card { padding: var(--space-lg) var(--space-sm); }
    .sticky-cta { display: block; }
    .ba-container { aspect-ratio: 1 / 1; }
    .footer-bottom { flex-direction: column; gap: 1rem; }
}