/* ---- Базовые стили ---- */
* { margin:0; padding:0; box-sizing:border-box; }
body { font-family:'Inter',sans-serif; background:#fff; color:#1e293b; line-height:1.5; scroll-behavior:smooth; }
.container { max-width:1280px; margin:0 auto; padding:0 24px; }
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:12px 28px; border-radius:40px; font-weight:600; font-size:1rem; transition:all .25s ease; cursor:pointer; border:none; text-decoration:none; }
.btn-primary { background:#1a6b8a; color:#fff; box-shadow:0 4px 12px rgba(26,107,138,.25); }
.btn-primary:hover { background:#0f5470; transform:translateY(-2px); box-shadow:0 8px 20px rgba(26,107,138,.35); }
.btn-outline { background:transparent; border:2px solid #1a6b8a; color:#1a6b8a; }
.btn-outline:hover { background:#1a6b8a10; border-color:#0f5470; transform:translateY(-2px); }
.btn-light { background:rgba(255,255,255,.9); color:#0a3d52; border:2px solid transparent; }
.btn-light:hover { background:#fff; transform:translateY(-2px); box-shadow:0 8px 20px rgba(0,0,0,.15); }

/* ---- Шапка ---- */
header { background:#fff; box-shadow:0 4px 20px rgba(0,0,0,.02); position:sticky; top:0; z-index:100; border-bottom:1px solid #ddeef5; }
.header-flex { display:flex; justify-content:space-between; align-items:center; padding:16px 0; flex-wrap:wrap; gap:16px; }
.logo { display:flex; align-items:center; gap:10px; font-weight:800; font-size:1.7rem; letter-spacing:-.02em; color:#0b4f6c; }
.logo i { font-size:2rem; color:#1a6b8a; }
.nav-links { display:flex; gap:32px; align-items:center; }
.nav-links a { text-decoration:none; font-weight:500; color:#2c3e4a; transition:color .2s; }
.nav-links a:hover { color:#1a6b8a; }

/* ---- Слайдер ---- */
.hero-slider {
    position:relative;
    width:100%;
    height:80vh;
    min-height:420px;
    overflow:hidden;
    background:#9fcfe3;
}
.slider-track { display:flex; width:100%; height:100%; transition:transform .6s ease; }
.slider-slide { flex:0 0 100%; height:100%; display:flex; align-items:center; justify-content:center; }
.slider-slide img { width:100%; height:100%; object-fit:contain; display:block; background:transparent; }

.slider-overlay.desktop-only {
    position:absolute;
    inset:0;
    display:flex;
    align-items:center;
    justify-content:flex-start;
    padding:0 10%;
    z-index:5;
    pointer-events:none;
}
.slider-overlay.desktop-only .content {
    max-width:680px;
    color:#fff;
    text-shadow:0 4px 20px rgba(0,0,0,0.8), 0 2px 8px rgba(0,0,0,0.5);
    pointer-events:auto;
}
.slider-overlay.desktop-only h1 {
    font-size:3.5rem;
    font-weight:800;
    line-height:1.1;
    margin-bottom:20px;
    letter-spacing:-.02em;
}
.slider-overlay.desktop-only h1 span { border-bottom:4px solid #8fc8e0; }
.slider-overlay.desktop-only p {
    font-size:1.2rem;
    opacity:.95;
    margin-bottom:32px;
    max-width:90%;
    font-weight:400;
}
.slider-overlay.desktop-only .btns {
    display:flex;
    gap:16px;
    flex-wrap:wrap;
}

.mobile-only { display:none; }

.slider-controls {
    position:absolute;
    bottom:30px;
    left:0;
    right:0;
    display:flex;
    justify-content:center;
    align-items:center;
    gap:20px;
    z-index:10;
    pointer-events:none;
}
.slider-controls button, .slider-controls .dot { pointer-events:auto; }
.slider-controls button {
    background:rgba(255,255,255,.25);
    backdrop-filter:blur(6px);
    color:#fff;
    border:1px solid rgba(255,255,255,.4);
    width:44px;
    height:44px;
    border-radius:44px;
    font-size:1.2rem;
    cursor:pointer;
    transition:background .2s;
    display:flex;
    align-items:center;
    justify-content:center;
}
.slider-controls button:hover { background:rgba(255,255,255,.5); }
.dots { display:flex; gap:12px; pointer-events:auto; }
.dot {
    width:12px;
    height:12px;
    border-radius:20px;
    background:rgba(255,255,255,.4);
    border:none;
    padding:0;
    cursor:pointer;
    transition:all .3s;
}
.dot.active { background:#fff; width:28px; }
.dot:hover { background:rgba(255,255,255,.8); }

/* ---- Секции ---- */
.section { padding:80px 0; }
.section-title {
    text-align:center;
    font-size:2.3rem;
    font-weight:700;
    margin-bottom:16px;
    color:#0a3d52;
}
.section-sub {
    text-align:center;
    color:#4d7386;
    max-width:680px;
    margin:0 auto 48px;
    font-size:1.1rem;
}

.custom-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:32px; }
.custom-card {
    background:#fff;
    padding:32px 24px;
    border-radius:28px;
    text-align:center;
    transition:all .25s;
    box-shadow:0 12px 28px -8px rgba(0,0,0,.05);
    border:1px solid #e3eff5;
}
.custom-card:hover {
    transform:translateY(-6px);
    box-shadow:0 24px 36px -12px rgba(26,107,138,.12);
    border-color:#b0d4e3;
}
.custom-icon { font-size:2.8rem; color:#1a6b8a; margin-bottom:20px; }
.custom-card h3 { font-size:1.5rem; margin-bottom:12px; }
.custom-card p { color:#475569; }

.works-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:30px; }
.work-item {
    background:#f5fafd;
    border-radius:28px;
    overflow:hidden;
    border:1px solid #d6e9f2;
    transition:transform .25s, box-shadow .25s;
}
.work-item:hover {
    transform:translateY(-6px);
    box-shadow:0 20px 30px -12px rgba(26,107,138,.15);
}
.work-item img {
    width:100%;
    height:220px;
    object-fit:cover;
    display:block;
    background:#e2eff6;
}
.work-item .work-label {
    padding:16px 20px;
    text-align:center;
    font-weight:500;
    color:#0a3d52;
    border-top:1px solid #d6e9f2;
    background:#fff;
}

.design-gallery { display:grid; grid-template-columns:repeat(3,1fr); gap:30px; margin-top:30px; }
.design-item {
    background:#f5fafd;
    border-radius:28px;
    padding:20px;
    text-align:center;
    border:1px solid #d6e9f2;
}
.design-item img {
    width:100%;
    height:180px;
    object-fit:cover;
    border-radius:16px;
    margin-bottom:12px;
    background:#e2eff6;
}
.design-item h4 { font-size:1.2rem; margin-bottom:6px; }
.design-item p { font-size:.95rem; color:#4d7386; }

.steps-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:30px; margin-top:20px; }
.step-item {
    background:#f5fafd;
    border-radius:32px;
    padding:32px 20px;
    text-align:center;
    border:1px solid #d6e9f2;
}
.step-num {
    background:#1a6b8a;
    color:#fff;
    width:48px;
    height:48px;
    border-radius:60px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-weight:800;
    font-size:1.5rem;
    margin:0 auto 20px;
}
.step-item h4 { font-size:1.4rem; margin-bottom:12px; }

.specs-wrapper {
    background:#f5fafd;
    border-radius:48px;
    padding:40px;
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:40px;
    border:1px solid #d6e9f2;
}
.specs-list { flex:1; min-width:240px; }
.specs-list ul { list-style:none; }
.specs-list li {
    margin-bottom:20px;
    display:flex;
    gap:14px;
    align-items:baseline;
    font-size:1.05rem;
}
.specs-list i { color:#1a6b8a; width:24px; font-size:1.2rem; }

.specs-img {
    flex:1;
    min-width:240px;
    background:#e2eff6;
    border-radius:32px;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:20px;
}
.specs-img img {
    width:100%;
    height:auto;
    border-radius:24px;
    display:block;
}

.price-card {
    max-width:600px;
    margin:0 auto;
    background:#fff;
    border-radius:48px;
    box-shadow:0 24px 48px -12px rgba(0,0,0,.08);
    padding:40px;
    text-align:center;
    border:1px solid #d6e9f2;
}
.price-value { font-size:3rem; font-weight:800; color:#0b4f6c; margin:16px 0 8px; }
.price-desc { color:#5f6c7a; margin-bottom:24px; }
.price-features { list-style:none; text-align:left; margin:24px 0; padding:0 16px; }
.price-features li { margin:12px 0; display:flex; align-items:center; gap:12px; }
.price-features i { color:#1a6b8a; width:22px; }

.form-box {
    background:#f5fafd;
    border-radius:48px;
    padding:48px;
    max-width:800px;
    margin:0 auto;
    box-shadow:0 8px 28px rgba(0,0,0,.04);
    border:1px solid #d6e9f2;
}
.form-group { margin-bottom:24px; }
.form-group input, .form-group textarea {
    width:100%;
    padding:14px 20px;
    border-radius:60px;
    border:1px solid #c5dce7;
    font-family:inherit;
    font-size:1rem;
    transition:.2s;
    background:#fff;
}
.form-group textarea { border-radius:28px; resize:vertical; }
.form-group input:focus, .form-group textarea:focus {
    outline:none;
    border-color:#1a6b8a;
    box-shadow:0 0 0 3px rgba(26,107,138,.2);
}
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.btn-full { width:100%; justify-content:center; }

/* ---- Футер (обновлён в цветовой гамме #9fcfe3) ---- */
footer {
    background: #2c7a9e;  /* гармонирующий с фоном слайдера оттенок */
    color: #f0f9ff;
    padding: 48px 0 24px;
    margin-top: 40px;
}
.footer-grid {
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:40px;
    margin-bottom:32px;
}
.footer-col h4 {
    color: #ffffff;
    margin-bottom:18px;
    font-size:1.2rem;
}
.footer-col p,
.footer-col a {
    color: #d4eaf3;
    text-decoration:none;
    display:block;
    margin-bottom:8px;
    transition: color .2s;
}
.footer-col a:hover {
    color: #ffffff;
}
.footer-col i {
    margin-right:8px;
    width:20px;
    color: #b5d9e8; /* светлый акцент */
}
.copyright {
    text-align:center;
    border-top:1px solid rgba(255,255,255,0.15);
    padding-top:28px;
    font-size:.85rem;
    color: #cce3ed;
}

/* ---- Лайтбокс (без изменений) ---- */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}
.lightbox.active {
    display: flex !important;
}
.lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 0 40px rgba(0,0,0,0.5);
}
.close-btn {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #fff;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
    z-index: 1001;
}
.close-btn:hover {
    color: #ccc;
}
.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    font-size: 48px;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.3s;
    z-index: 1001;
    user-select: none;
}
.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.4);
}
.lightbox-prev {
    left: 20px;
}
.lightbox-next {
    right: 20px;
}
.lightbox-prev,
.lightbox-next,
.close-btn {
    pointer-events: auto;
}
.work-item {
    cursor: pointer;
}

.toast-msg {
    position:fixed;
    bottom:30px;
    left:50%;
    transform:translateX(-50%);
    background:#1a6b8a;
    color:#fff;
    padding:12px 28px;
    border-radius:60px;
    font-weight:500;
    z-index:200;
    box-shadow:0 10px 20px rgba(0,0,0,.2);
    opacity:0;
    transition:opacity .3s;
    pointer-events:none;
}
.toast-msg.show { opacity:1; }

/* ---- Адаптивность ---- */
@media (max-width: 900px) {
    .hero-slider { height: 65vh; min-height: 380px; }
    .slider-overlay.desktop-only { padding: 0 6%; justify-content: center; text-align: center; }
    .slider-overlay.desktop-only .content { max-width: 100%; }
    .slider-overlay.desktop-only h1 { font-size: 2.2rem; }
    .slider-overlay.desktop-only p { font-size: 1rem; max-width: 100%; }
    .slider-overlay.desktop-only .btns { justify-content: center; }
    .steps-grid { grid-template-columns: 1fr; }
    .design-gallery { grid-template-columns: 1fr 1fr; }
    .works-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .section-title { font-size: 1.9rem; }
    .specs-wrapper { flex-direction: column; }
    .header-flex { flex-direction: column; }
    .nav-links { flex-wrap: wrap; justify-content: center; }
    .slider-controls { bottom: 20px; gap: 14px; }
    .slider-controls button { width: 38px; height: 38px; font-size: 1rem; }
}

/* --- Телефоны (ширина до 550px) --- */
@media (max-width: 550px) {
    .container { padding: 0 12px; }
    .slider-overlay.desktop-only { display: none !important; }
    .mobile-only {
        display: block !important;
        position: relative !important;
        background: #9fcfe3;
        padding: 20px 16px 30px;
        text-align: center;
        color: #fff;
        margin-top: -4px;
    }
    .mobile-only .content { max-width: 100%; background: transparent; padding: 0; backdrop-filter: none; border-radius: 0; text-shadow: none; }
    .mobile-only h1 { font-size: 1.6rem; margin-bottom: 10px; color: #fff; }
    .mobile-only h1 span { border-bottom: 3px solid #8fc8e0; }
    .mobile-only p { font-size: 0.95rem; margin-bottom: 16px; opacity: 0.9; color: #d4eaf3; }
    .mobile-only .btns { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
    .mobile-only .btns .btn { font-size: 0.85rem; padding: 8px 18px; }
    .hero-slider { height: 50vh; min-height: 260px; }
    .slider-controls { bottom: 10px; gap: 8px; }
    .slider-controls button { width: 32px; height: 32px; font-size: 0.8rem; }
    .dot { width: 8px; height: 8px; }
    .dot.active { width: 16px; }

    /* Исправление для блока "Индивидуальный расчёт" */
    .price-value {
        font-size: 2rem;
        word-break: break-word;
        hyphens: auto;
    }
    .price-card {
        padding: 20px;
    }
    .price-features li {
        font-size: 0.9rem;
    }

    .section-title { font-size: 1.5rem; }
    .section-sub { font-size: 0.95rem; margin-bottom: 30px; }
    .works-grid { grid-template-columns: 1fr; }
    .design-gallery { grid-template-columns: 1fr; }
    .specs-wrapper { padding: 24px; }
}

/* --- Очень маленькие экраны (iPhone SE и т.п., до 400px) --- */
@media (max-width: 400px) {
    .hero-slider {
        height: 40vh;
        min-height: 200px;
    }
    .mobile-only {
        padding: 16px 12px 24px;
    }
    .mobile-only h1 {
        font-size: 1.3rem;
    }
    .mobile-only p {
        font-size: 0.8rem;
    }
    .mobile-only .btns .btn {
        font-size: 0.7rem;
        padding: 6px 12px;
    }

    /* Ещё меньший шрифт для очень узких экранов */
    .price-value {
        font-size: 1.6rem;
        word-break: break-word;
        hyphens: auto;
    }
    .price-card {
        padding: 16px;
    }
    .price-features li {
        font-size: 0.8rem;
    }
}