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

/* CSS Variables - Premium Interior Design Theme */
:root {
    --color-primary: #151515;
    --color-primary-light: #2c2c2c;
    --color-accent: #c2a363; /* Premium Champagne Gold */
    --color-accent-hover: #a88a4c;
    --color-success: #25D366; /* WhatsApp Green */
    --color-bg: #ffffff;
    --color-bg-light: #f9f9f9; /* Very subtle warm off-white */
    --color-text: #333333;
    --color-text-muted: #777777;
    --color-border: #eaeaea;
    
    --radius-sm: 4px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --shadow-sm: 0 4px 15px rgba(0,0,0,0.03);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.06);
    --shadow-lg: 0 20px 40px rgba(0,0,0,0.12);
    
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-family: 'Inter', sans-serif; color: var(--color-text); background-color: var(--color-bg); line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: transparent; }

/* Typography */
h1, h2, h3, h4 { font-family: 'Montserrat', sans-serif; color: var(--color-primary); line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: 3.5rem; margin-bottom: 1.5rem; font-weight: 800; }
h2 { font-size: 2.5rem; margin-bottom: 1.5rem; }
h3 { font-size: 1.4rem; margin-bottom: 0.75rem; }
p { margin-bottom: 1rem; }

/* Utilities */
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.py-section { padding: 100px 0; }
.bg-light { background-color: var(--color-bg-light); }
.section-title { text-align: center; margin-bottom: 1rem; font-size: 2.8rem; }
.section-subtitle { text-align: center; color: var(--color-text-muted); margin-bottom: 4rem; font-size: 1.15rem; max-width: 700px; margin-left: auto; margin-right: auto; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 16px 36px; border-radius: 50px; font-weight: 600; font-size: 1rem; font-family: 'Montserrat', sans-serif; transition: var(--transition); text-align: center; white-space: nowrap; text-transform: uppercase; letter-spacing: 0.05em; }
.btn-primary { background-color: var(--color-accent); color: white; box-shadow: 0 8px 20px rgba(194, 163, 99, 0.3); }
.btn-primary:hover { background-color: var(--color-accent-hover); transform: translateY(-3px); box-shadow: 0 12px 25px rgba(194, 163, 99, 0.4); color: white; }
.btn-secondary { background-color: rgba(255,255,255,0.1); backdrop-filter: blur(10px); color: white; border: 1px solid rgba(255,255,255,0.3); }
.btn-secondary:hover { background-color: white; color: var(--color-primary); transform: translateY(-3px); }
.btn-outline { border: 2px solid var(--color-primary); color: var(--color-primary); padding: 12px 28px; }
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-outline-primary { border: 2px solid var(--color-accent); color: var(--color-accent); padding: 12px 28px; background: transparent;}
.btn-outline-primary:hover, .btn-outline-primary.active { background: var(--color-accent); color: #fff; }

/* Header */
.header { position: fixed; top: 0; left: 0; width: 100%; background-color: rgba(255, 255, 255, 0.95); backdrop-filter: blur(15px); z-index: 1000; height: 90px; display: flex; align-items: center; border-bottom: 1px solid rgba(0,0,0,0.05); transition: var(--transition); }
.header-container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.logo { font-size: 1.8rem; font-weight: 800; color: var(--color-primary); font-family: 'Montserrat', sans-serif; letter-spacing: -0.03em; }
.logo span { color: var(--color-accent) !important; }
.nav-list { display: flex; gap: 20px; align-items: center; }
.nav-list a { color: var(--color-text); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; font-family: 'Montserrat', sans-serif; position: relative;}
.nav-list a::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--color-accent); transition: var(--transition); }
.nav-list a:hover::after { width: 100%; }
.nav-list a:hover, .nav-list a.highlight { color: var(--color-accent) !important; }
.header-contact { display: flex; align-items: center; }
.phone { font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 1rem; margin-right: 20px; color: var(--color-primary); white-space: nowrap; }
.phone:hover { color: var(--color-accent); }

/* Mobile Menu */
.mobile-menu-btn { display: none; flex-direction: column; gap: 6px; width: 34px; z-index: 1001;}
.mobile-menu-btn span { display: block; width: 100%; height: 2px; background-color: var(--color-primary); border-radius: 2px; transition: var(--transition); }
.mobile-nav { position: fixed; top: 0; left: 0; width: 100%; height: 100vh; background: rgba(255, 255, 255, 0.98); backdrop-filter: blur(20px); padding: 120px 30px 40px; transform: translateY(-100%); opacity: 0; visibility: hidden; transition: all 0.5s cubic-bezier(0.77, 0, 0.175, 1); z-index: 999; display: flex; align-items: center; justify-content: center; flex-direction: column;}
.mobile-nav.active { transform: translateY(0); opacity: 1; visibility: visible; }
.mobile-nav-content { text-align: center; width: 100%; }
.mobile-nav-list { display: flex; flex-direction: column; gap: 25px; margin-bottom: 40px; }
.mobile-nav-list a { font-family: 'Montserrat', sans-serif; font-size: 1.5rem; font-weight: 600; text-transform: uppercase; color: var(--color-primary); }
.mobile-phone { display: block; font-family: 'Montserrat', sans-serif; font-size: 1.6rem; font-weight: 700; margin-bottom: 25px; color: var(--color-text); }
.mobile-nav .btn { width: 100%; max-width: 300px; margin: 0 auto; }

/* Hero */
.hero { position: relative; min-height: 90vh; display: flex; align-items: center; padding-top: 90px; color: white; text-align: center; overflow: hidden;}
.hero-bg { position: absolute; inset:0; z-index: -2; overflow: hidden; background: #000; }
.hero-slide { position: absolute; inset:-5%; background-size: cover; background-position: center; opacity: 0; animation: heroFadeZoom 24s infinite linear; }
.hero-slide:nth-child(1) { animation-delay: 0s; }
.hero-slide:nth-child(2) { animation-delay: 6s; }
.hero-slide:nth-child(3) { animation-delay: 12s; }
.hero-slide:nth-child(4) { animation-delay: 18s; }
@keyframes heroFadeZoom { 
    0% { opacity: 0; transform: scale(1); } 
    5% { opacity: 1; } 
    25% { opacity: 1; transform: scale(1.05); } 
    30% { opacity: 0; transform: scale(1.06); } 
    100% { opacity: 0; transform: scale(1); } 
}
.hero::after { content:''; position:absolute; inset:0; background: linear-gradient(to bottom, rgba(0,0,0,0.3) 0%, rgba(15,15,15,0.7) 100%); z-index: -1; }
.hero-content { margin: 0 auto; max-width: 900px; z-index: 1; position: relative; }
.hero h1, .hero h2, .hero h3 { color: #ffffff; }
.hero p { font-size: 1.3rem; margin-bottom: 2.5rem; font-weight: 400; opacity: 0.9; color: #ffffff; }
.hero-buttons { display: flex; gap: 20px; justify-content: center; }

/* Cards & Grid */
.adv-grid, .catalog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; margin-top: 50px; }
.adv-card { background: var(--color-bg); padding: 50px 40px; border-radius: var(--radius-lg); border: 1px solid var(--color-border); transition: var(--transition); text-align: center; box-shadow: var(--shadow-sm); }
.adv-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: transparent; }
.adv-icon { width: 70px; height: 70px; margin: 0 auto 25px; color: var(--color-accent); }

.catalog-card { background: var(--color-bg); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid var(--color-border); display: flex; flex-direction: column;}
.catalog-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }
.card-img { height: 240px; overflow: hidden; position: relative;}
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease; }
.catalog-card:hover .card-img img { transform: scale(1.1); }
.card-content { padding: 35px 30px; display: flex; flex-direction: column; flex-grow: 1; }
.card-content h3 { font-size: 1.5rem; }
.card-content p { color: var(--color-text-muted); flex-grow: 1; font-size: 1.05rem;}
.card-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--color-border); }
.price { font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 1.15rem; color: var(--color-primary); }
.card-footer .btn { padding: 10px 24px; font-size: 0.85rem; }

/* Masonry for Gallery */
.masonry-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); grid-gap: 24px; }
.gallery-item { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; cursor: pointer; transition: transform 0.5s ease; display: block; }
.gallery-item:hover img { transform: scale(1.05); }

/* Numbers */
.numbers-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 30px; text-align: center; margin-top: 50px; }
.number-card { background: var(--color-bg-light); padding: 50px 30px; border-radius: var(--radius-lg); transition: var(--transition); border: 1px solid var(--color-border); }
.number-card:hover { transform: translateY(-5px); background: #fff; box-shadow: var(--shadow-md); border-color: transparent;}
.number-value { font-size: 4rem; font-weight: 800; font-family: 'Montserrat', sans-serif; color: var(--color-accent); margin-bottom: 10px; line-height: 1; }
.number-label { font-size: 1.1rem; color: var(--color-primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }

/* How we work */
.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 40px; margin-top: 60px; position: relative; }
.step-card { text-align: center; position: relative; z-index: 1; background: transparent; padding: 20px; transition: var(--transition); }
.step-number { width: 70px; height: 70px; background: var(--color-bg-light); color: var(--color-accent); border: 2px solid var(--color-accent); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; font-family: 'Montserrat', sans-serif; font-weight: 700; margin: 0 auto 25px; transition: var(--transition); }
.step-card:hover .step-number { background: var(--color-accent); color: white; transform: scale(1.1); box-shadow: 0 10px 20px rgba(194, 163, 99, 0.3); }

/* FAQ */
.faq-list { max-width: 850px; margin: 50px auto 0; display: flex; flex-direction: column; gap: 20px; }
.faq-item { background: var(--color-bg); border-radius: var(--radius-md); border: 1px solid var(--color-border); box-shadow: var(--shadow-sm); overflow: hidden; transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-md); border-color: rgba(194, 163, 99, 0.5); }
.faq-question { width: 100%; text-align: left; padding: 25px 30px; font-size: 1.2rem; font-family: 'Montserrat', sans-serif; font-weight: 600; color: var(--color-primary); display: flex; justify-content: space-between; align-items: center; transition: var(--transition); background: transparent;}
.faq-question:hover { color: var(--color-accent); }
.faq-question span { font-size: 1.5rem; transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1); color: var(--color-accent); font-weight: 400;}
.faq-item.active .faq-question span { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s cubic-bezier(0.25, 0.8, 0.25, 1); }
.faq-answer p { padding: 0 30px 30px; margin: 0; color: var(--color-text-muted); line-height: 1.7;}

/* Footer */
.footer { background: var(--color-primary); color: white; padding: 80px 0 40px; }
.footer-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 50px; margin-bottom: 60px;}
.footer-logo { color: white !important; }
.footer-logo span { color: var(--color-accent) !important; }
.footer-col p { color: rgba(255,255,255,0.7); }
.footer-col h4 { color: white; margin-bottom: 25px; font-size: 1.2rem; letter-spacing: 0.05em; text-transform: uppercase;}
.footer-col ul li { margin-bottom: 15px; }
.footer-col ul li a { color: rgba(255,255,255,0.7); font-weight: 500; }
.footer-col ul li a:hover { color: var(--color-accent); padding-left: 5px; }
.footer-phone { font-family: 'Montserrat', sans-serif; font-size: 1.3rem; font-weight: 700; display: block; margin: 15px 0; color: white;}
.footer-phone:hover { color: var(--color-accent); }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.1); color: rgba(255,255,255,0.5); font-size: 0.9rem; }

/* Lightbox */
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,0.95); display: none; z-index: 2000; align-items:center; justify-content:center; backdrop-filter: blur(5px);}
.lightbox.active { display: flex; }
.lightbox-content { max-width: 90%; max-height: 90%; border-radius: var(--radius-sm); box-shadow: 0 20px 50px rgba(0,0,0,0.5);}
.lightbox-close { position: absolute; top: 30px; right: 40px; color: #fff; font-size: 50px; cursor: pointer; opacity: 0.7; transition: var(--transition); }
.lightbox-close:hover { opacity: 1; transform: scale(1.1); }

/* Telegram Button */
.telegram-btn { position: fixed; bottom: 30px; right: 30px; width: 65px; height: 65px; background: linear-gradient(135deg, #2AABEE, #229ED9); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 10px 25px rgba(42, 171, 238, 0.4); z-index: 1000; transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
.telegram-btn:hover { transform: scale(1.15) translateY(-5px); box-shadow: 0 15px 35px rgba(42, 171, 238, 0.6); color: white; }

/* Scroll Animations */
.fade-in { opacity: 0; transform: translateY(40px); transition: opacity 1s cubic-bezier(0.25, 0.8, 0.25, 1), transform 1s cubic-bezier(0.25, 0.8, 0.25, 1); }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 992px) {
    .header-contact { display: none; }
    .nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero h1 { font-size: 2.5rem; }
    .section-title { font-size: 2.2rem; }
}
@media (max-width: 576px) {
    .hero h1 { font-size: 2rem; }
    .hero-buttons { flex-direction: column; width: 100%; }
    .hero-buttons .btn { width: 100%; }
    .py-section { padding: 60px 0; }
}