/*-----------------------------------------------------------------------------
    ARREA Power — Modern redesign (2026)
    Vanilla CSS design system: no Bootstrap, no jQuery plugins.
    Dark "energy grid" theme · electric blue / amber accents · fluid type.
-----------------------------------------------------------------------------*/

/*===== 1. Design tokens =====*/
:root {
    --bg: #0a1220;
    --bg-alt: #0e1830;
    --surface: #131f38;
    --surface-2: #1a2947;
    --line: rgba(120, 170, 255, 0.14);
    --text: #dbe4f5;
    --text-dim: #93a3c0;
    --heading: #f4f7ff;
    --accent: #35a7ff;
    --accent-2: #6ee7ff;
    --amber: #ffb545;
    --amber-2: #ff8a3d;
    --grad: linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 100%);
    --grad-amber: linear-gradient(100deg, var(--amber-2) 0%, var(--amber) 100%);
    --radius: 18px;
    --radius-sm: 12px;
    --shadow: 0 18px 50px -18px rgba(0, 0, 0, 0.55);
    --font-head: "Space Grotesk", "Inter", sans-serif;
    --font-body: "Inter", sans-serif;
    --container: 1180px;
    --header-h: 74px;
}

/*===== 2. Reset / base =====*/
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 10px);
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.65;
    color: var(--text);
    background:
        radial-gradient(1100px 500px at 85% -5%, rgba(53, 167, 255, 0.10), transparent 60%),
        radial-gradient(900px 460px at -10% 30%, rgba(110, 231, 255, 0.06), transparent 55%),
        var(--bg);
    overflow-x: hidden;
}

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

a {
    color: var(--accent-2);
    text-decoration: none;
    transition: color 0.25s ease;
}

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

ul,
ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-head);
    color: var(--heading);
    font-weight: 600;
    line-height: 1.15;
}

.container {
    width: min(100% - 2.5rem, var(--container));
    margin-inline: auto;
}

.section {
    padding-block: clamp(4rem, 9vw, 7rem);
    position: relative;
}

.section-alt {
    background:
        linear-gradient(180deg, rgba(19, 31, 56, 0.55), rgba(19, 31, 56, 0.2));
    border-block: 1px solid var(--line);
}

/* subtle grid motif */
.section-alt::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(120, 170, 255, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(120, 170, 255, 0.045) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(70% 70% at 50% 40%, #000 30%, transparent 100%);
}

.section-alt > .container {
    position: relative;
    z-index: 1;
}

/*===== 3. Typography helpers =====*/
.section-head {
    max-width: 760px;
    margin: 0 auto clamp(2rem, 5vw, 3.5rem);
    text-align: center;
}

.section-kicker {
    display: inline-block;
    font-family: var(--font-head);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--accent-2);
    padding: 0.35rem 1rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(53, 167, 255, 0.07);
    margin-bottom: 1.1rem;
}

.section-kicker.center {
    display: block;
    width: fit-content;
    margin-inline: auto;
    text-align: center;
}

.section-title {
    font-size: clamp(1.7rem, 4vw, 2.7rem);
    letter-spacing: -0.02em;
}

.section-text {
    margin-top: 1.1rem;
    color: var(--text-dim);
    font-size: 1.02rem;
}

.text {
    color: var(--text-dim);
    font-size: 0.97rem;
}

/*===== 4. Buttons =====*/
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-head);
    font-weight: 600;
    font-size: 0.92rem;
    letter-spacing: 0.03em;
    padding: 0.85rem 1.8rem;
    border-radius: 999px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn-primary {
    background: var(--grad);
    color: #04101f;
    box-shadow: 0 10px 30px -10px rgba(53, 167, 255, 0.6);
}

.btn-primary:hover {
    color: #04101f;
    transform: translateY(-2px);
    box-shadow: 0 16px 36px -10px rgba(53, 167, 255, 0.75);
}

.btn-amber {
    background: var(--grad-amber);
    color: #23130a;
    box-shadow: 0 10px 30px -10px rgba(255, 165, 61, 0.55);
}

.btn-amber:hover {
    color: #23130a;
    transform: translateY(-2px);
    box-shadow: 0 16px 36px -10px rgba(255, 165, 61, 0.7);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.25);
    color: var(--heading);
    backdrop-filter: blur(8px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    transform: translateY(-2px);
}

/*===== 5. Header / nav =====*/
.site-header {
    position: fixed;
    inset-inline: 0;
    top: 0;
    z-index: 1000;
    height: var(--header-h);
    display: flex;
    align-items: center;
    background: rgba(10, 18, 32, 0.55);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.site-header.is-scrolled {
    background: rgba(10, 18, 32, 0.88);
    border-bottom-color: var(--line);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    width: min(100% - 2.5rem, var(--container));
}

.brand img {
    height: 42px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-link {
    font-family: var(--font-head);
    font-size: 0.86rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text);
    padding: 0.55rem 0.95rem;
    border-radius: 999px;
    transition: color 0.25s, background 0.25s;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
    background: rgba(53, 167, 255, 0.15);
}

.nav-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--line);
    color: var(--accent-2);
    margin-left: 0.4rem;
}

.nav-social a:hover {
    background: var(--grad);
    color: #04101f;
    border-color: transparent;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--heading);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/*===== 6. Hero =====*/
.hero {
    position: relative;
    min-height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-slides,
.hero-slide {
    position: absolute;
    inset: 0;
}

.hero-slide {
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    opacity: 0;
    transform: scale(1.06);
    transition: opacity 1.1s ease, transform 6s ease;
}

.hero-slide.is-active {
    opacity: 1;
    transform: scale(1);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(10, 18, 32, 0.72) 0%, rgba(10, 18, 32, 0.45) 45%, rgba(10, 18, 32, 0.92) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding-top: var(--header-h);
}

.hero-kicker {
    font-family: var(--font-head);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--accent-2);
    margin-bottom: 1.4rem;
}

.hero-title {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 2.4em;
    font-size: clamp(2.4rem, 7vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
}

.hero-word {
    grid-area: 1 / 1;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s ease, transform 0.8s ease;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    padding-inline: 0.1em;
}

.hero-word.is-active {
    opacity: 1;
    transform: translateY(0);
}

.hero-sub {
    max-width: 620px;
    margin: 1.3rem auto 0;
    font-size: clamp(1rem, 1.6vw, 1.15rem);
    color: var(--text);
}

.hero-cta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-top: 2.2rem;
}

.hero-controls {
    position: absolute;
    z-index: 3;
    inset-inline: 0;
    bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.2rem;
}

.hero-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    backdrop-filter: blur(6px);
    transition: background 0.25s, transform 0.25s;
}

.hero-arrow:hover {
    background: var(--grad);
    color: #04101f;
    transform: scale(1.06);
}

.hero-dots {
    display: flex;
    gap: 0.55rem;
}

.hero-dots button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 0;
    background: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    transition: width 0.3s ease, background 0.3s ease;
}

.hero-dots button.is-active {
    width: 30px;
    border-radius: 999px;
    background: var(--grad);
}

/*===== 7. About =====*/
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.4rem;
}

.about-card {
    position: relative;
    padding: 2rem 1.8rem;
    background: linear-gradient(160deg, var(--surface), rgba(19, 31, 56, 0.4));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, border-color 0.3s ease;
    overflow: hidden;
}

.about-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(320px 160px at 15% 0%, rgba(53, 167, 255, 0.12), transparent 70%);
    opacity: 0;
    transition: opacity 0.35s ease;
    pointer-events: none;
}

.about-card:hover {
    transform: translateY(-6px);
    border-color: rgba(53, 167, 255, 0.45);
}

.about-card:hover::after {
    opacity: 1;
}

.about-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: rgba(53, 167, 255, 0.12);
    border: 1px solid var(--line);
    color: var(--accent-2);
    font-size: 1.5rem;
    margin-bottom: 1.2rem;
}

.about-title {
    font-size: 1.2rem;
    margin-bottom: 0.55rem;
}

/*===== 8. Video panels =====*/
.video-panel {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 340px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}

.video-panel .video-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-panel::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 18, 32, 0.35), rgba(10, 18, 32, 0.7));
}

.video-panel-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 3rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.4rem;
}

.play-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 84px;
    height: 84px;
    border-radius: 50%;
    border: 0;
    background: var(--grad);
    color: #04101f;
    font-size: 1.7rem;
    cursor: pointer;
    box-shadow: 0 0 0 0 rgba(53, 167, 255, 0.5);
    animation: pulse 2.4s infinite;
    transition: transform 0.25s ease;
}

.play-button:hover {
    transform: scale(1.08);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(53, 167, 255, 0.45); }
    70% { box-shadow: 0 0 0 26px rgba(53, 167, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(53, 167, 255, 0); }
}

.parent-kicker {
    font-family: var(--font-head);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: #fff;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
}

/*===== 9. Clients marquee =====*/
.clients .section-kicker {
    margin-bottom: 2.2rem;
}

.clients-marquee {
    overflow: hidden;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.clients-track {
    display: flex;
    align-items: center;
    gap: 3rem;
    width: max-content;
    animation: marquee 40s linear infinite;
}

.clients-marquee:hover .clients-track {
    animation-play-state: paused;
}

.clients-track img {
    height: 64px;
    width: auto;
    border-radius: 10px;
    background: #fff;
    padding: 6px 12px;
    opacity: 0.85;
    filter: saturate(0.85);
    transition: opacity 0.3s, filter 0.3s, transform 0.3s;
}

.clients-track img:hover {
    opacity: 1;
    filter: none;
    transform: translateY(-4px);
}

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/*===== 10. Partners =====*/
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.55rem;
    margin-bottom: 2.4rem;
}

.filter-btn {
    font-family: var(--font-head);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--text-dim);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.55rem 1.25rem;
    cursor: pointer;
    transition: all 0.25s ease;
}

.filter-btn:hover {
    color: var(--heading);
    border-color: rgba(53, 167, 255, 0.5);
}

.filter-btn.is-active {
    background: var(--grad);
    border-color: transparent;
    color: #04101f;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.6rem;
}

.partner-card {
    background: linear-gradient(160deg, var(--surface), rgba(19, 31, 56, 0.35));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, border-color 0.3s ease, opacity 0.35s ease;
}

.partner-card:hover {
    transform: translateY(-6px);
    border-color: rgba(53, 167, 255, 0.45);
}

.partner-card.is-hidden {
    display: none;
}

.partner-image {
    position: relative;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.partner-image > img {
    max-height: 82%;
    max-width: 82%;
    object-fit: contain;
    transition: transform 0.4s ease;
}

.partner-card:hover .partner-image > img {
    transform: scale(1.06);
}

.partner-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    background: rgba(10, 18, 32, 0.72);
    backdrop-filter: blur(3px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.partner-card:hover .partner-overlay,
.partner-card:focus-within .partner-overlay {
    opacity: 1;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    font-size: 1.05rem;
    transition: background 0.25s, transform 0.25s;
}

.icon-btn:hover {
    background: var(--grad);
    color: #04101f;
    transform: scale(1.08);
}

.partner-text {
    padding: 1.3rem 1.4rem 1.5rem;
}

.partner-title {
    font-size: 1.12rem;
    margin-bottom: 0.3rem;
}

.partner-title a {
    color: var(--heading);
}

.partner-title a:hover {
    color: var(--accent-2);
}

/*===== 11. Contact =====*/
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.6rem;
    align-items: stretch;
}

.contact-card {
    display: flex;
    flex-direction: column;
    gap: 1.4rem;
    padding: 2.2rem 1.8rem;
    background: linear-gradient(160deg, var(--surface), rgba(19, 31, 56, 0.4));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
}

.contact-card-title {
    font-size: 1.25rem;
    padding-bottom: 0.9rem;
    border-bottom: 1px solid var(--line);
}

.contact-card-title.accent-blue {
    color: var(--accent-2);
}

.contact-card-title.accent-amber {
    color: var(--amber);
}

.contact-widget {
    flex: 1;
    min-height: 200px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.contact-mail-icon {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-mail-icon img {
    max-height: 150px;
    filter: drop-shadow(0 8px 24px rgba(255, 165, 61, 0.35));
}

.contact-card-action {
    margin-top: auto;
}

/*===== 12. Footer =====*/
.site-footer {
    border-top: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(14, 24, 48, 0.6), rgba(10, 18, 32, 0.95));
    padding-top: clamp(2.5rem, 6vw, 4rem);
}

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

.footer-brand img {
    max-height: 60px;
    width: auto;
    background: #fff;
    border-radius: 10px;
    padding: 8px 14px;
}

.footer-tag {
    margin-top: 1rem;
    color: var(--text-dim);
    font-size: 0.92rem;
    max-width: 340px;
}

.footer-title {
    font-size: 0.85rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--heading);
    margin-bottom: 1rem;
}

.footer-links a {
    display: inline-block;
    color: var(--text-dim);
    padding-block: 0.28rem;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--accent-2);
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--line);
    color: var(--accent-2);
}

.footer-social a:hover {
    background: var(--grad);
    color: #04101f;
    border-color: transparent;
}

.footer-bottom {
    border-top: 1px solid var(--line);
    padding-block: 1.3rem;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-dim);
    font-size: 0.85rem;
}

/*===== 13. Dialogs (video & image popups) =====*/
dialog {
    border: 0;
    padding: 0;
    background: transparent;
    max-width: min(92vw, 960px);
    width: 100%;
    margin: auto;
    position: fixed;
    inset: 0;
}

dialog::backdrop {
    background: rgba(4, 8, 16, 0.85);
    backdrop-filter: blur(6px);
}

.video-dialog video {
    width: 100%;
    border-radius: var(--radius);
    display: block;
    background: #000;
    box-shadow: var(--shadow);
}

.image-dialog {
    max-width: min(92vw, 820px);
}

.image-dialog img {
    width: 100%;
    border-radius: var(--radius);
    display: block;
    box-shadow: var(--shadow);
}

.contact-dialog {
    max-width: min(94vw, 720px);
}

.contact-dialog iframe {
    width: 100%;
    height: min(80vh, 780px);
    border: 0;
    border-radius: var(--radius);
    display: block;
    background: #fff;
    box-shadow: var(--shadow);
}

.close-popup,
.close-image,
.close-contact {
    position: absolute;
    top: -14px;
    right: -14px;
    z-index: 2;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 0;
    background: var(--grad);
    color: #04101f;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: var(--shadow);
}

/*===== 14. Back to top =====*/
.back-to-top {
    position: fixed;
    right: 1.4rem;
    bottom: 1.4rem;
    z-index: 900;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--grad);
    color: #04101f;
    font-size: 1.1rem;
    box-shadow: 0 10px 30px -8px rgba(53, 167, 255, 0.6);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
    line-height: 45px;
    text-align: center;    
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    color: #04101f;
}

/*===== 15. Reveal-on-scroll =====*/
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-in {
    opacity: 1;
    transform: translateY(0);
}

/*===== 16. Responsive =====*/
@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0.2rem;
        padding: 1rem 1.4rem 1.6rem;
        background: rgba(10, 18, 32, 0.97);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--line);
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
    }

    .nav-menu.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-link {
        display: block;
        padding: 0.8rem 1rem;
    }

    .nav-social {
        padding-top: 0.6rem;
    }

    .hero-controls {
        bottom: 1.2rem;
        gap: 0.8rem;
    }

    .hero-arrow {
        width: 38px;
        height: 38px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/*===== 17. Reduced motion =====*/
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}