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

/* Remove default margins */
body,
h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
    margin: 0;
}

/* Improve media defaults */
img,
picture {
    max-width: 100%;
    display: block;
}

/* Better form typography */
input,
button,
textarea,
select {
    font: inherit;
}

/* Prevent overflow */
html,
body {
    overflow-x: hidden;
}

/* Design tokens */
:root {
    --bg-deep: #0a1628;
    --bg-mid: #0f2347;
    --bg-glow: #1a3a6e;
    --text-primary: #f4f7fc;
    --text-muted: #94a8c9;
    --accent: #4d8cff;
    --accent-soft: rgba(77, 140, 255, 0.15);
    --border: rgba(255, 255, 255, 0.08);
    --header-height: 4.5rem;
    --font: "DM Sans", system-ui, -apple-system, sans-serif;
}

html {
    height: 100%;
}

body {
    min-height: 100%;
    height: 100%;
    font-family: var(--font);
    color: var(--text-primary);
    background-color: var(--bg-deep);
    line-height: 1.5;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 clamp(1.5rem, 5vw, 3rem);
    background: linear-gradient(
            to bottom,
            rgba(10, 22, 40, 0.95) 0%,
            rgba(10, 22, 40, 0.6) 70%,
            transparent 100%
    );
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.125rem;
    letter-spacing: -0.02em;
    transition: opacity 0.2s ease;
}

.logo:hover {
    opacity: 0.85;
}

.logo__mark {
    flex-shrink: 0;
    color: var(--accent);
}

/* Main — full viewport */
.main {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--header-height) + 2rem) clamp(1.5rem, 5vw, 3rem) 3rem;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, var(--bg-glow) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 100%, rgba(77, 140, 255, 0.12) 0%, transparent 50%),
    linear-gradient(165deg, var(--bg-mid) 0%, var(--bg-deep) 45%, #060d18 100%);
}

.main__content {
    width: 100%;
    max-width: 36rem;
    text-align: center;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 1.25rem;
    padding: 0.35rem 0.875rem;
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-soft);
    border: 1px solid rgba(77, 140, 255, 0.25);
    border-radius: 999px;
}

.headline {
    font-size: clamp(2.75rem, 8vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.05;
    margin-bottom: 1rem;
}

.subhead {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--text-muted);
    max-width: 28rem;
    margin-inline: auto;
    margin-bottom: 3rem;
}

/* Contacts placeholder */
.contacts {
    text-align: left;
    padding: 1.75rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 1rem;
    backdrop-filter: blur(8px);
}

.contacts__heading {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.contacts__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contacts__list li {
    display: grid;
    grid-template-columns: 5.5rem 1fr;
    gap: 0.75rem;
    align-items: baseline;
}

.contacts__label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.contacts__link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.contacts__link:hover {
    color: var(--accent);
}

.contacts__placeholder {
    color: var(--text-muted);
    font-style: italic;
}

@media (max-width: 480px) {
    .contacts__list li {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
}

.logo-container {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}