:root {
    color-scheme: light dark;
    --background: #07141c;
    --surface: rgba(255, 255, 255, 0.08);
    --surface-strong: rgba(255, 255, 255, 0.13);
    --text: #f4fbff;
    --muted: #b7c9d2;
    --accent: #54d6e8;
    --accent-strong: #3db8e8;
    --border: rgba(255, 255, 255, 0.16);
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.3);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at 20% 0%, rgba(84, 214, 232, 0.28), transparent 34rem),
        radial-gradient(circle at 90% 30%, rgba(61, 184, 232, 0.2), transparent 30rem),
        var(--background);
    line-height: 1.6;
}

a {
    color: inherit;
}

.shell {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
}

.brand {
    display: inline-flex;
    gap: 10px;
    align-items: center;
    color: var(--text);
    font-size: 1.2rem;
    font-weight: 750;
    text-decoration: none;
}

.paw {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    color: #041319;
    background: linear-gradient(145deg, var(--accent), #a8f3ff);
    border-radius: 11px;
}

.nav-links {
    display: flex;
    gap: 22px;
}

.nav-links a,
footer a {
    color: var(--muted);
    text-decoration: none;
}

.nav-links a:hover,
footer a:hover {
    color: var(--text);
}

.hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
    align-items: center;
    min-height: 68vh;
    padding: 70px 0 90px;
}

.eyebrow {
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 750;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 760px;
    margin-bottom: 24px;
    font-size: clamp(3rem, 8vw, 6.5rem);
    line-height: 0.98;
    letter-spacing: -0.065em;
}

h2 {
    margin-bottom: 18px;
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
}

h3 {
    margin-bottom: 8px;
    font-size: 1.15rem;
}

.lead {
    max-width: 650px;
    color: var(--muted);
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border: 1px solid var(--border);
    border-radius: 14px;
    color: var(--text);
    background: var(--surface);
    font-weight: 700;
    text-decoration: none;
}

.button.primary {
    color: #041319;
    border-color: transparent;
    background: linear-gradient(145deg, var(--accent), #a8f3ff);
}

.timer-card,
.card,
.document {
    border: 1px solid var(--border);
    background: linear-gradient(145deg, var(--surface-strong), var(--surface));
    box-shadow: var(--shadow);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
}

.timer-card {
    padding: 26px;
    border-radius: 34px;
    transform: rotate(2deg);
}

.timer-mode,
.timer-meta,
.timer-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.timer-mode,
.timer-meta {
    color: var(--muted);
    font-size: 0.85rem;
}

.timer-value {
    padding: 34px 0;
    font-size: clamp(4rem, 10vw, 6rem);
    font-weight: 780;
    line-height: 1;
    text-align: center;
    letter-spacing: -0.06em;
    font-variant-numeric: tabular-nums;
}

.timer-controls {
    gap: 12px;
    margin-top: 22px;
}

.control {
    flex: 1;
    padding: 13px;
    border-radius: 14px;
    color: #041319;
    background: var(--accent);
    font-weight: 750;
    text-align: center;
}

.control.secondary {
    color: var(--text);
    background: var(--surface-strong);
}

.section {
    padding: 80px 0;
}

.section-intro {
    max-width: 640px;
    color: var(--muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 34px;
}

.card {
    padding: 26px;
    border-radius: 24px;
    box-shadow: none;
}

.card p,
.document p,
.document li {
    color: var(--muted);
}

.icon {
    display: grid;
    width: 42px;
    height: 42px;
    margin-bottom: 22px;
    place-items: center;
    border-radius: 13px;
    color: #041319;
    background: var(--accent);
    font-weight: 800;
}

.document {
    max-width: 820px;
    margin: 70px auto;
    padding: clamp(26px, 6vw, 64px);
    border-radius: 30px;
}

.document h1 {
    font-size: clamp(2.6rem, 7vw, 4.8rem);
}

.document h2 {
    margin-top: 42px;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
}

.document a {
    color: var(--accent);
}

.contact {
    display: inline-block;
    padding: 18px 22px;
    border: 1px solid var(--border);
    border-radius: 16px;
    color: var(--text);
    background: var(--surface);
    font-weight: 700;
    text-decoration: none;
}

footer {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: space-between;
    padding: 34px 0 44px;
    color: var(--muted);
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 18px;
}

@media (max-width: 760px) {
    .nav-links {
        gap: 14px;
        font-size: 0.9rem;
    }

    .hero,
    .grid {
        grid-template-columns: 1fr;
    }

    .hero {
        gap: 44px;
        padding: 50px 0 70px;
    }

    .timer-card {
        transform: none;
    }
}