:root {
    --ink: #101418;
    --ink-soft: #3a4450;
    --muted: #6b7580;
    --line: rgba(16, 20, 24, 0.1);
    --surface: #eef2f5;
    --surface-2: #f7f9fb;
    --white: #ffffff;
    --brand: #0c4a6e;
    --brand-deep: #082f46;
    --accent: #1280c4;
    --accent-soft: rgba(18, 128, 196, 0.12);
    --shadow: 0 18px 50px rgba(8, 30, 48, 0.14);
    --radius: 4px;
    --container: 1180px;
    --header-h: 78px;
    --font-display: "Syne", sans-serif;
    --font-body: "DM Sans", sans-serif;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--ink);
    background:
        radial-gradient(1200px 500px at 10% -10%, rgba(18, 128, 196, 0.08), transparent 55%),
        linear-gradient(180deg, #f4f7fa 0%, #ffffff 35%, #f3f6f8 100%);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

img,
video {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
textarea {
    font: inherit;
}

.container {
    width: min(100% - 2rem, var(--container));
    margin-inline: auto;
}

.hp {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
    pointer-events: none;
}

/* Topbar / Header */
.topbar {
    background: var(--brand-deep);
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.875rem;
}

.topbar-inner {
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.topbar a:hover {
    color: #fff;
}

.topbar-social {
    display: flex;
    gap: 0.85rem;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.site-header.is-scrolled {
    border-color: var(--line);
    box-shadow: 0 8px 30px rgba(8, 30, 48, 0.06);
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    min-width: 0;
}

.brand-logo {
    width: 52px;
    height: 52px;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 4px 16px rgba(8, 30, 48, 0.08);
}

.brand-text {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    min-width: 0;
}

.brand-text strong {
    font-family: var(--font-display);
    font-size: 1.15rem;
    letter-spacing: 0.02em;
    line-height: 1.1;
}

.brand-text small {
    color: var(--muted);
    font-size: 0.78rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 220px;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.site-nav > ul {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav > ul > li {
    position: relative;
}

.site-nav a {
    display: block;
    padding: 0.55rem 0.7rem;
    color: var(--ink-soft);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 210px;
    margin: 0;
    padding: 0.45rem;
    list-style: none;
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: 0.2s var(--ease);
    z-index: 20;
}

.has-children:hover .submenu,
.has-children:focus-within .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu a {
    padding: 0.55rem 0.75rem;
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    background: #fff;
    border-radius: var(--radius);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--ink);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 48px;
    padding: 0.75rem 1.35rem;
    border-radius: var(--radius);
    border: 1px solid transparent;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: transform 0.25s var(--ease), background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--brand));
    color: #fff;
    box-shadow: 0 10px 28px rgba(18, 128, 196, 0.28);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1590d8, #0a3f5f);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.45);
    color: #fff;
    backdrop-filter: blur(6px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.18);
}

.btn-sm {
    min-height: 40px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-block {
    width: 100%;
}

/* Hero — one composition, brand first, full-bleed */
.hero {
    position: relative;
    min-height: calc(100svh - 36px - var(--header-h));
    display: grid;
    align-items: end;
    color: #fff;
    overflow: hidden;
}

.hero-media {
    position: absolute;
    inset: 0;
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.04);
    animation: heroZoom 18s var(--ease) infinite alternate;
}

.hero-scrim {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(6, 22, 34, 0.82) 0%, rgba(6, 22, 34, 0.55) 48%, rgba(6, 22, 34, 0.28) 100%),
        linear-gradient(180deg, rgba(6, 22, 34, 0.15) 0%, rgba(6, 22, 34, 0.72) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: clamp(3rem, 8vw, 6.5rem) 0 clamp(4.5rem, 9vw, 7rem);
    max-width: 760px;
    margin-left: max(1rem, calc((100% - var(--container)) / 2));
    margin-right: auto;
    width: min(100% - 2rem, 760px);
}

.hero-brand {
    margin: 0 0 1rem;
    font-family: var(--font-display);
    font-size: clamp(2rem, 5.5vw, 3.6rem);
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    line-height: 0.95;
}

.hero h1 {
    margin: 0 0 1rem;
    font-family: var(--font-display);
    font-size: clamp(1.55rem, 3.4vw, 2.35rem);
    font-weight: 700;
    line-height: 1.15;
    max-width: 16ch;
}

.hero-sub {
    margin: 0 0 1.75rem;
    max-width: 42ch;
    color: rgba(255, 255, 255, 0.86);
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
}

.hero-scroll {
    position: absolute;
    left: 50%;
    bottom: 1.4rem;
    transform: translateX(-50%);
    width: 28px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: 999px;
    z-index: 2;
}

.hero-scroll span {
    display: block;
    width: 4px;
    height: 4px;
    margin: 10px auto 0;
    border-radius: 50%;
    background: #fff;
    animation: scrollDot 1.6s ease infinite;
}

@keyframes heroZoom {
    from { transform: scale(1.02); }
    to { transform: scale(1.08); }
}

@keyframes scrollDot {
    0% { transform: translateY(0); opacity: 1; }
    80% { transform: translateY(16px); opacity: 0; }
    100% { opacity: 0; }
}

/* Sections */
.section {
    padding: clamp(3.5rem, 7vw, 6rem) 0;
}

.section-head {
    margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
    max-width: 640px;
}

.section-head h2,
.about-copy h2,
.forms-intro h2,
.modal-dialog h2 {
    margin: 0 0 0.65rem;
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    letter-spacing: 0.01em;
    line-height: 1.15;
}

.section-lead {
    margin: 0;
    color: var(--ink-soft);
    font-size: 1.05rem;
}

.section-cta {
    margin-top: 2rem;
    text-align: center;
}

.muted {
    color: var(--muted);
}

/* Product categories */
.cat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.cat-card {
    position: relative;
    min-height: 280px;
    overflow: hidden;
    color: #fff;
    isolation: isolate;
}

.cat-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s var(--ease);
}

.cat-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 20%, rgba(6, 22, 34, 0.85) 100%);
    z-index: 1;
}

.cat-card-body {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    padding: 1.25rem;
    display: grid;
    gap: 0.25rem;
}

.cat-card strong {
    font-family: var(--font-display);
    font-size: 1.35rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.cat-card em {
    font-style: normal;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.92rem;
}

.cat-card:hover img {
    transform: scale(1.06);
}

/* About */
.about {
    background:
        linear-gradient(180deg, transparent, rgba(18, 128, 196, 0.05)),
        var(--surface-2);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: center;
}

.about-media {
    overflow: hidden;
    min-height: 420px;
}

.about-media img {
    width: 100%;
    height: 100%;
    min-height: 420px;
    object-fit: cover;
}

.about-points {
    list-style: none;
    margin: 1.5rem 0;
    padding: 0;
    display: grid;
    gap: 0.85rem;
}

.about-points li {
    display: grid;
    gap: 0.15rem;
    padding-left: 1rem;
    border-left: 3px solid var(--accent);
}

.about-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
}

.about-meta span {
    display: block;
    color: var(--muted);
    font-size: 0.85rem;
    margin-bottom: 0.2rem;
}

/* Profiles slider */
.profile-track {
    position: relative;
    padding-inline: 1.25rem;
}

.profile-rail {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    scrollbar-width: none;
    padding: 0.25rem 0.15rem;
    -webkit-overflow-scrolling: touch;
}

.profile-rail::-webkit-scrollbar {
    display: none;
}

.profile-card {
    flex: 0 0 min(280px, calc(100% - 2.5rem));
    scroll-snap-align: start;
    background: #fff;
    border: 1px solid var(--line);
    overflow: hidden;
}

.profile-visual {
    position: relative;
    height: 190px;
}

.profile-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-badge {
    position: absolute;
    left: 0.85rem;
    bottom: 0.85rem;
    background: rgba(255, 255, 255, 0.95);
    color: var(--brand-deep);
    font-family: var(--font-display);
    font-weight: 700;
    padding: 0.35rem 0.7rem;
    font-size: 0.95rem;
}

.profile-body {
    padding: 1rem 1.1rem 1.25rem;
}

.specs {
    display: flex;
    gap: 0.5rem;
    list-style: none;
    margin: 0 0 0.65rem;
    padding: 0;
    flex-wrap: wrap;
}

.specs li {
    background: var(--accent-soft);
    color: var(--brand);
    padding: 0.25rem 0.55rem;
    font-size: 0.82rem;
    font-weight: 600;
}

.profile-body p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 0.95rem;
}

.slider-btn {
    position: absolute;
    top: 42%;
    z-index: 3;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--line);
    background: #fff;
    box-shadow: 0 8px 20px rgba(8, 30, 48, 0.14);
    cursor: pointer;
    font-size: 1.45rem;
    line-height: 1;
    display: grid;
    place-items: center;
    transition: background 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
}

.slider-btn:hover {
    background: var(--surface-2);
    transform: scale(1.05);
}

.slider-btn:disabled {
    opacity: 0.35;
    cursor: default;
    transform: none;
}

.slider-btn.prev { left: 0; }
.slider-btn.next { right: 0; }

/* Triple / media cards */
.triple-grid,
.hardware-grid,
.doors-grid,
.glass-grid,
.related-grid {
    display: grid;
    gap: 1rem;
}

.triple-grid {
    grid-template-columns: repeat(3, 1fr);
}

.media-card,
.hardware-card,
.glass-card {
    background: #fff;
    border: 1px solid var(--line);
    overflow: hidden;
    display: grid;
    grid-template-rows: 200px auto;
}

.media-card img,
.hardware-card img,
.glass-card img,
.related-card img,
.door-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-card > div,
.hardware-card > div,
.glass-card > div,
.door-card-body {
    padding: 1.1rem 1.15rem 1.3rem;
}

.media-card h3,
.hardware-card h3,
.glass-card h3,
.door-card h3,
.related-card h3,
.contacts-card h3,
.footer-col h3 {
    margin: 0 0 0.45rem;
    font-family: var(--font-display);
    font-size: 1.15rem;
}

.media-card p,
.hardware-card p,
.glass-card p {
    margin: 0;
    color: var(--ink-soft);
}

.eyebrow {
    display: inline-block;
    margin-bottom: 0.35rem;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hardware-grid {
    grid-template-columns: repeat(2, 1fr);
}

.hardware-card {
    grid-template-columns: 180px 1fr;
    grid-template-rows: auto;
    align-items: stretch;
}

.hardware-card img {
    min-height: 100%;
    height: 180px;
}

.doors-grid {
    grid-template-columns: repeat(3, 1fr);
}

.door-card {
    position: relative;
    min-height: 340px;
    overflow: hidden;
    color: #fff;
}

.door-card img {
    position: absolute;
    inset: 0;
    transition: transform 0.7s var(--ease);
}

.door-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 25%, rgba(6, 22, 34, 0.92));
}

.door-card-body {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.door-card-body h3 {
    color: #fff;
    text-shadow: 0 1px 12px rgba(0, 0, 0, 0.35);
}

.door-card-body p {
    margin: 0;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.45);
}

.door-card:hover img {
    transform: scale(1.05);
}

.glass {
    background: linear-gradient(180deg, #ffffff, #eef4f8);
}

.glass-grid {
    grid-template-columns: repeat(4, 1fr);
}

.related-grid {
    grid-template-columns: repeat(3, 1fr);
}

.related-card {
    background: #fff;
    border: 1px solid var(--line);
    overflow: hidden;
}

.related-card img {
    height: 190px;
}

.related-card h3 {
    padding: 1rem 1.1rem 1.15rem;
}

/* Works / gallery */
.works-videos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.video-card {
    margin: 0;
    background: #000;
    overflow: hidden;
    min-height: 240px;
}

.video-card video {
    width: 100%;
    height: 100%;
    min-height: 240px;
    object-fit: cover;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.gallery-item {
    padding: 0;
    border: 0;
    cursor: pointer;
    overflow: hidden;
    background: #000;
    aspect-ratio: 1;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.55s var(--ease), opacity 0.3s ease;
    opacity: 0.96;
}

.gallery-item:hover img {
    transform: scale(1.06);
    opacity: 1;
}

/* Forms */
.forms-band {
    background:
        linear-gradient(120deg, rgba(8, 47, 70, 0.92), rgba(12, 74, 110, 0.88)),
        url("../img/4.jpg") center/cover;
    color: #fff;
}

.forms-band .section-lead,
.calculate .section-lead {
    color: rgba(255, 255, 255, 0.84);
}

.calculate {
    background:
        linear-gradient(120deg, rgba(16, 20, 24, 0.9), rgba(12, 74, 110, 0.82)),
        url("../img/2.jpg") center/cover;
    color: #fff;
}

.forms-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: center;
}

.forms-phone {
    display: inline-block;
    margin: 1.25rem 0 0.5rem;
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
}

.forms-panel {
    background: rgba(255, 255, 255, 0.97);
    color: var(--ink);
    padding: clamp(1.25rem, 3vw, 1.75rem);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow);
}

.lead-form {
    display: grid;
    gap: 0.9rem;
}

.field {
    display: grid;
    gap: 0.35rem;
}

.field span {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--ink-soft);
}

.field input,
.field textarea {
    width: 100%;
    border: 1px solid var(--line);
    background: var(--surface-2);
    border-radius: var(--radius);
    padding: 0.8rem 0.9rem;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.field-file em {
    color: var(--muted);
    font-size: 0.8rem;
    font-style: normal;
}

.form-status {
    margin: 0;
    font-size: 0.92rem;
}

.form-status.is-ok { color: #0f7a45; }
.form-status.is-err { color: #b42318; }

/* Contacts */
.contacts-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.4fr;
    gap: 1rem;
}

.contacts-card {
    background: #fff;
    border: 1px solid var(--line);
    padding: 1.4rem;
}

.contacts-card p {
    margin: 0 0 0.7rem;
}

.hours {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
    display: grid;
    gap: 0.45rem;
}

.hours li {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--line);
    padding-bottom: 0.4rem;
    font-size: 0.95rem;
}

.map-wrap,
.map-placeholder {
    min-height: 340px;
    background: var(--surface);
    border: 1px solid var(--line);
    overflow: hidden;
}

.map-wrap iframe {
    width: 100%;
    height: 100%;
    min-height: 340px;
    border: 0;
}

.map-placeholder {
    display: grid;
    place-content: center;
    gap: 1rem;
    text-align: center;
    padding: 2rem;
    color: var(--ink-soft);
}

.map-placeholder .btn-ghost {
    color: var(--brand);
    border-color: var(--brand);
    background: transparent;
}

/* Footer */
.site-footer {
    background: var(--brand-deep);
    color: rgba(255, 255, 255, 0.86);
    padding-top: 3rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 2rem;
    padding-bottom: 2.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}

.footer-brand img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
}

.footer-brand strong {
    font-family: var(--font-display);
    font-size: 1.15rem;
    color: #fff;
}

.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.45rem;
}

.footer-links a:hover,
.footer-contacts a:hover {
    color: #fff;
}

.footer-bar {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding: 1rem 0;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.65);
}

.site-footer .hours li {
    border-color: rgba(255, 255, 255, 0.12);
}

/* FAB + modal */
.fab {
    position: fixed;
    right: 1.25rem;
    bottom: 1.25rem;
    z-index: 60;
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    min-height: 52px;
    padding: 0.75rem 1.15rem;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent), var(--brand));
    color: #fff;
    font-weight: 700;
    box-shadow: 0 14px 34px rgba(18, 128, 196, 0.35);
    cursor: pointer;
    animation: fabIn 0.7s var(--ease) both;
}

.fab-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #7dffb3;
    box-shadow: 0 0 0 0 rgba(125, 255, 179, 0.7);
    animation: pulse 1.8s ease infinite;
}

@keyframes fabIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(125, 255, 179, 0.55); }
    70% { box-shadow: 0 0 0 12px rgba(125, 255, 179, 0); }
    100% { box-shadow: 0 0 0 0 rgba(125, 255, 179, 0); }
}

.modal[hidden],
.lightbox[hidden] {
    display: none !important;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: grid;
    place-items: center;
    padding: 1rem;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(6, 16, 24, 0.62);
    backdrop-filter: blur(4px);
}

.modal-dialog {
    position: relative;
    width: min(100%, 460px);
    background: #fff;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    animation: modalUp 0.35s var(--ease);
}

.modal-close,
.lightbox-close {
    position: absolute;
    top: 0.55rem;
    right: 0.7rem;
    border: 0;
    background: transparent;
    font-size: 1.8rem;
    line-height: 1;
    cursor: pointer;
    color: var(--muted);
}

@keyframes modalUp {
    from { opacity: 0; transform: translateY(18px) scale(0.98); }
    to { opacity: 1; transform: none; }
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 90;
    background: rgba(4, 10, 16, 0.9);
    display: grid;
    place-items: center;
    padding: 2rem;
}

.lightbox img {
    max-width: min(1100px, 100%);
    max-height: 85vh;
    object-fit: contain;
}

/* Reveal motion */
.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    transition-delay: calc(var(--d, 0) * 60ms);
}

.reveal.is-in {
    opacity: 1;
    transform: none;
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.18s; }
.delay-3 { transition-delay: 0.26s; }

/* Responsive */
@media (max-width: 1100px) {
    .cat-grid,
    .glass-grid,
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hardware-grid,
    .doors-grid,
    .related-grid,
    .works-videos,
    .footer-grid,
    .about-grid,
    .forms-layout,
    .contacts-grid {
        grid-template-columns: 1fr;
    }

    .hardware-card {
        grid-template-columns: 1fr;
    }

    .hardware-card img {
        height: 200px;
    }

    .header-cta {
        display: none;
    }
}

@media (max-width: 820px) {
    .nav-toggle {
        display: inline-flex;
    }

    .site-nav {
        position: fixed;
        inset: calc(36px + var(--header-h)) 0 auto 0;
        background: #fff;
        border-bottom: 1px solid var(--line);
        padding: 1rem;
        flex-direction: column;
        align-items: stretch;
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: 0.3s var(--ease);
        box-shadow: var(--shadow);
    }

    .site-nav.is-open {
        transform: none;
        opacity: 1;
        pointer-events: auto;
    }

    .site-nav > ul {
        flex-direction: column;
        align-items: stretch;
    }

    .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: 0;
        padding-left: 0.5rem;
    }

    .triple-grid {
        grid-template-columns: 1fr;
    }

    .fab {
        right: 0.85rem;
        bottom: 0.85rem;
        font-size: 0.92rem;
    }

    .brand-text small {
        display: none;
    }
}

@media (max-width: 560px) {
    .cat-grid,
    .gallery-grid,
    .related-grid,
    .about-meta {
        grid-template-columns: 1fr;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .works-videos {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .hero-img,
    .fab-dot,
    .hero-scroll span,
    .reveal {
        animation: none !important;
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}