/* Потолки193 — стили витрины натяжных потолков (Краснодар) */

:root {
    --primary: #1a1a1a;
    --accent: #d4af37;
    --accent-hover: #b8952c;
    --dark: #111111;
    --light: #ffffff;
    --grey: #f6f6f7;
    --muted: #888;
    --maxw: 1200px;
    --header-h: 72px;
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Montserrat', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: var(--light);
    color: var(--primary);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

body.no-scroll { overflow: hidden; }

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

.container {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3 { line-height: 1.2; font-weight: 700; }

/* ---------- Header ---------- */
.site-header {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    position: fixed;
    top: 0; left: 0; right: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.06);
}

.header-content {
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
}
.logo-accent { color: var(--accent); }

.nav-links { display: flex; gap: 2rem; }
.nav-links a {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
}
.nav-links a:hover { color: var(--accent); }

.header-phone {
    text-decoration: none;
    font-weight: 700;
    color: var(--primary);
    border: 1px solid var(--accent);
    padding: 9px 16px;
    font-size: 0.85rem;
    transition: var(--transition);
    white-space: nowrap;
}
.header-phone:hover { background: var(--accent); color: #fff; }

/* ---------- Burger ---------- */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px; height: 44px;
    background: var(--grey);
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 8px;
    cursor: pointer;
}
.menu-line { width: 22px; height: 2px; background: var(--primary); margin: 2px 0; transition: var(--transition); }
.mobile-menu-btn.active .menu-line:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.mobile-menu-btn.active .menu-line:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active .menu-line:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

.mobile-nav {
    display: none;
    position: fixed;
    top: var(--header-h); left: 0;
    width: 100%;
    height: calc(100vh - var(--header-h));
    background: #fff;
    z-index: 999;
    padding: 24px;
    overflow-y: auto;
}
.mobile-nav.active { display: block; animation: fadeInMenu 0.25s ease; }
@keyframes fadeInMenu { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
.mobile-nav-links { display: flex; flex-direction: column; gap: 10px; }
.mobile-nav-links a {
    padding: 18px;
    background: var(--grey);
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    border-left: 0 solid var(--accent);
    transition: var(--transition);
}
.mobile-nav-links a:hover { border-left: 5px solid var(--accent); padding-left: 22px; color: var(--accent); }
.mobile-nav-links .mobile-nav-phone { background: var(--accent); color: #fff; text-align: center; }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    min-height: 92vh;
    display: flex;
    align-items: center;
    text-align: center;
    color: #fff;
    background:
        linear-gradient(rgba(15,15,15,0.55), rgba(15,15,15,0.75)),
        url('mnogouroven.webp') center/cover no-repeat;
    padding: calc(var(--header-h) + 60px) 0 60px;
}
.hero-content { max-width: 860px; margin: 0 auto; }
.hero-eyebrow {
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 1rem;
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 600;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.6rem);
    font-weight: 700;
    margin-bottom: 1.3rem;
}
.hero h1 span { display: block; color: var(--accent); font-weight: 300; }
.hero-sub {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    opacity: 0.92;
    margin-bottom: 2.5rem;
    max-width: 720px;
    margin-left: auto; margin-right: auto;
}
.hero-btns { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; align-items: center; }
.hero-phone-link {
    color: #fff;
    text-decoration: none;
    border-bottom: 1px solid var(--accent);
    padding-bottom: 4px;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.hero-phone-link:hover { color: var(--accent); }

/* ---------- Buttons ---------- */
.cta-button {
    background: var(--accent);
    color: #fff;
    padding: 17px 36px;
    border: none;
    text-transform: uppercase;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}
.cta-button:hover { background: var(--primary); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,0.18); }
.cta-button:active { transform: translateY(0); }

.cancel-button {
    background: #e9e9ec;
    color: var(--primary);
    padding: 17px 24px;
    border: none;
    text-transform: uppercase;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}
.cancel-button:hover { background: #dcdce0; }

/* ---------- Sections ---------- */
section { padding: 90px 0; scroll-margin-top: var(--header-h); }
.section-title {
    text-align: center;
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 3rem;
}

/* ---------- Features ---------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}
.feature-card {
    background: #fff;
    padding: 2.5rem 1.8rem;
    border: 1px solid #eee;
    text-align: center;
    transition: var(--transition);
}
.feature-card:hover { border-color: var(--accent); transform: translateY(-5px); box-shadow: 0 15px 35px rgba(0,0,0,0.06); }
.feature-icon { font-size: 2.4rem; margin-bottom: 1.2rem; }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 0.7rem; text-transform: uppercase; letter-spacing: 0.5px; }
.feature-card p { color: #555; font-size: 0.95rem; font-weight: 300; }

/* ---------- Portfolio / Types ---------- */
.portfolio { background: var(--grey); }
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}
.portfolio-item {
    position: relative;
    overflow: hidden;
    background: var(--dark);
    cursor: pointer;
}
.portfolio-image-wrapper { position: relative; width: 100%; height: 100%; overflow: hidden; }
.portfolio-item img {
    width: 100%;
    height: 340px;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.2,1,0.3,1), filter 0.5s ease;
}
.portfolio-item:hover img { transform: scale(1.08); filter: brightness(0.55); }
.portfolio-overlay {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    padding: 28px;
    background: rgba(20,20,20,0.45);
    opacity: 0; transition: opacity 0.45s ease;
}
.portfolio-item:hover .portfolio-overlay { opacity: 1; }
.portfolio-info { text-align: center; color: #fff; transform: translateY(24px); transition: transform 0.5s ease; }
.portfolio-item:hover .portfolio-info { transform: translateY(0); }
.portfolio-info h3 { font-size: 1.35rem; margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; }
.portfolio-info p { font-size: 0.9rem; font-weight: 300; margin-bottom: 18px; opacity: 0.85; }
.portfolio-price {
    display: inline-block;
    padding: 9px 22px;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
}
.portfolio-item:hover .portfolio-price { background: var(--accent); color: #fff; }

/* ---------- Calculator / Forms ---------- */
.calculator { background: var(--light); }
.calc-form {
    max-width: 620px;
    margin: 0 auto;
    background: #fff;
    padding: 2.6rem;
    box-shadow: 0 20px 55px rgba(0,0,0,0.07);
    border: 1px solid #eee;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 20px; display: flex; flex-direction: column; }
.form-group label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    color: var(--muted);
    font-weight: 600;
}
.form-group input, .form-group select {
    border: 1px solid #e2e2e6;
    padding: 13px 14px;
    font-size: 1rem;
    font-family: inherit;
    width: 100%;
    background: #fff;
    color: var(--primary);
    transition: border-color 0.2s ease;
}
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--accent); }
.error-message { display: none; color: #c0392b; font-size: 0.8rem; margin-top: 6px; }
.calc-form .cta-button { width: 100%; margin-top: 8px; }
.calc-result { display: none; margin-top: 22px; }
.success-result { background: var(--grey); border-left: 4px solid var(--accent); padding: 20px; }
.success-result h3 { margin-bottom: 10px; font-size: 1.1rem; }
.success-result p { margin-bottom: 4px; }
.success-result small { color: var(--muted); }

/* ---------- SEO commercial ---------- */
.seo-commercial { background: var(--grey); }
.seo-commercial .container { max-width: 860px; }
.seo-commercial p { margin-bottom: 18px; font-size: 1.05rem; color: #333; font-weight: 300; }
.seo-benefits { list-style: none; margin: 26px 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.seo-benefits li { background: #fff; padding: 15px 18px; border-left: 3px solid var(--accent); font-size: 0.95rem; }
.seo-commercial .cta-button { display: block; margin: 10px auto 0; }

/* ---------- FAQ ---------- */
.faq-section .container { max-width: 820px; }
.faq-item { border-bottom: 1px solid #e2e2e6; }
.faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    padding: 22px 44px 22px 0;
    position: relative;
}
.faq-question::after {
    content: "+";
    position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
    font-size: 1.6rem; color: var(--accent); transition: transform 0.3s ease;
}
.faq-question.open::after { transform: translateY(-50%) rotate(45deg); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    color: #555;
    font-weight: 300;
    padding: 0 4px;
}
.faq-question.open + .faq-answer { max-height: 260px; padding-bottom: 22px; }
.faq-cta { display: block; margin: 36px auto 0; }

/* ---------- Contact ---------- */
.contact { background: var(--dark); color: #fff; text-align: center; }
.contact .section-title { color: #fff; }
.contact-lead { opacity: 0.8; margin-bottom: 2rem; }
.contact-form { max-width: 480px; margin: 0 auto; text-align: left; }
.contact-form label { color: rgba(255,255,255,0.6); }
.contact-form input {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.18);
    color: #fff;
}
.contact-form input::placeholder { color: rgba(255,255,255,0.4); }
.contact-form input:focus { border-color: var(--accent); }
.contact-form .cta-button { width: 100%; }
.contact-phone { display: inline-block; margin-top: 22px; color: var(--accent); text-decoration: none; font-weight: 600; letter-spacing: 1px; }
.contact-phone:hover { text-decoration: underline; }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--primary);
    color: rgba(255,255,255,0.6);
    padding: 60px 0 36px;
    text-align: center;
}
.footer-brand { font-size: 1.3rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: #fff; margin-bottom: 14px; }
.site-footer p { font-size: 0.9rem; margin-bottom: 12px; font-weight: 300; }
.site-footer a { color: var(--accent); text-decoration: none; }
.footer-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 26px; margin: 22px 0; }
.footer-links a { color: rgba(255,255,255,0.55); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1px; transition: var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-copy { opacity: 0.5; font-size: 0.78rem; margin-top: 10px; }

/* ---------- Modal ---------- */
.modal {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 2000;
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
}
.modal[hidden] { display: none; }
.modal-box {
    background: #fff;
    padding: 2rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 60px rgba(0,0,0,0.3);
}
.modal-box h3 { color: var(--primary); text-align: center; margin-bottom: 1.4rem; font-size: 1.3rem; }
.modal-actions { display: flex; gap: 10px; margin-top: 1.4rem; }
.modal-actions .cta-button, .modal-actions .cancel-button { flex: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .header-phone { display: none; }
    .nav-links { gap: 1.3rem; }
}

@media (max-width: 768px) {
    section { padding: 64px 0; }
    .nav-links { display: none; }
    .mobile-menu-btn { display: flex; }
    .hero { min-height: 82vh; }
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .calc-form { padding: 1.6rem; }
    .portfolio-item img { height: 260px; }
    .portfolio-overlay { opacity: 1; background: linear-gradient(transparent, rgba(0,0,0,0.82)); align-items: flex-end; justify-content: flex-start; }
    .portfolio-info { transform: none; text-align: left; }
    .footer-links { flex-direction: column; gap: 14px; }
}

@media (max-width: 420px) {
    .hero-btns { flex-direction: column; }
    .cta-button { width: 100%; }
}

/* ---------- Доступность: уменьшенное движение ---------- */
@media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}