:root {
    --bg: #0f1720;
    --bg-soft: #16212b;
    --panel: rgba(255, 255, 255, 0.06);
    --panel-strong: #f5f1e8;
    --text: #e8edf0;
    --text-dark: #172026;
    --muted: #a6b4bd;
    --line: rgba(255, 255, 255, 0.12);
    --primary: #6fd0b1;
    --primary-dark: #2e8d72;
    --accent: #ffd86e;
    --shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
    --radius: 24px;
    --radius-sm: 16px;
    --container: 1120px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top, rgba(111, 208, 177, 0.18), transparent 35%),
        linear-gradient(180deg, #0c131a 0%, #111c24 100%);
    color: var(--text);
}

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

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

.container {
    width: min(calc(100% - 2rem), var(--container));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(16px);
    background: rgba(11, 18, 24, 0.68);
    border-bottom: 1px solid var(--line);
}

.nav-shell,
.footer-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.brand-logo {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.35rem;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #0b1117;
}

.brand-text {
    font-size: 0.92rem;
}

.nav-links,
.footer-links,
.button-row,
.hero-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    flex-wrap: wrap;
}

.nav-links a,
.footer-links a {
    color: var(--muted);
    transition: color 0.2s ease;
}

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

.hero-section,
.section {
    padding: 5.5rem 0;
}

.hero-grid,
.section-grid,
.signup-grid {
    display: grid;
    gap: 2rem;
    align-items: center;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.hero-copy h1,
.section-copy h2,
.signup-grid h2,
.confirmation-card h1 {
    margin: 0 0 1rem;
    line-height: 1.02;
    letter-spacing: -0.03em;
}

.hero-copy h1 {
    font-size: clamp(2.8rem, 8vw, 5.4rem);
    max-width: 10ch;
}

.section-copy h2,
.signup-grid h2,
.confirmation-card h1 {
    font-size: clamp(2.1rem, 5vw, 3.2rem);
}

.hero-text,
.section-copy p,
.signup-grid p,
.intro-text,
.confirmation-card p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--muted);
}

.eyebrow,
.meta-label {
    display: inline-block;
    margin-bottom: 0.9rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.78rem;
    font-weight: 700;
}

.hero-panel,
.signup-card,
.event-image,
.image-placeholder,
.hero-card,
.confirmation-card {
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero-panel {
    min-height: 420px;
    display: grid;
    place-items: center;
    background:
        linear-gradient(145deg, rgba(111, 208, 177, 0.16), rgba(255, 216, 110, 0.08)),
        rgba(255, 255, 255, 0.05);
    border: 1px solid var(--line);
    padding: 2rem;
}

.hero-logo {
    max-height: 300px;
    object-fit: contain;
}

.hero-card {
    width: 100%;
    padding: 2.5rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    border: 1px solid var(--line);
}

.hero-card-kicker {
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.8rem;
    font-weight: 700;
}

.hero-card-title {
    margin: 0.75rem 0 0;
    font-size: 2rem;
    line-height: 1.2;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.95rem 1.35rem;
    border-radius: 999px;
    font-weight: 700;
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        background 0.2s ease;
}

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

.button-primary {
    background: linear-gradient(135deg, var(--primary), #8fe3c8);
    color: #0b1117;
}

.button-secondary {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
}

.button-full {
    width: 100%;
}

.event-meta {
    display: grid;
    gap: 1rem;
    margin: 2rem 0;
}

.event-meta div {
    display: flex;
    flex-direction: column;
    padding: 1rem 1.2rem;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--line);
}

.event-image {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: white;
}

.image-placeholder,
.signup-card {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--line);
}

.image-placeholder {
    min-height: 100%;
    display: grid;
    place-items: center;
    text-align: center;
    color: var(--muted);
}

.image-placeholder code {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text);
}

.section-accent {
    background: rgba(245, 241, 232, 0.06);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

.signup-card label {
    display: block;
    margin-bottom: 0.55rem;
    font-weight: 600;
}

.signup-card input[type="email"] {
    width: 100%;
    margin-bottom: 0.85rem;
    padding: 1rem 1rem;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(10, 15, 20, 0.6);
    color: var(--text);
    font: inherit;
}

.signup-card input[type="email"]:focus {
    outline: 2px solid rgba(111, 208, 177, 0.45);
    outline-offset: 2px;
}

.form-note,
.footer-note {
    color: var(--muted);
    font-size: 0.92rem;
    line-height: 1.6;
}

.form-error {
    margin: 0.25rem 0 0.85rem;
    color: #ffbdbd;
}

.message-stack {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.message {
    padding: 0.95rem 1rem;
    border-radius: 14px;
    font-weight: 600;
}

.message-success {
    background: rgba(111, 208, 177, 0.16);
    color: #d8fff2;
    border: 1px solid rgba(111, 208, 177, 0.28);
}

.message-info {
    background: rgba(255, 216, 110, 0.12);
    color: #fff0be;
    border: 1px solid rgba(255, 216, 110, 0.24);
}

.section-compact {
    padding-top: 4rem;
    padding-bottom: 4rem;
}

.narrow-copy {
    max-width: 780px;
}

.intro-text {
    margin: 0;
    font-size: 1.15rem;
}

.site-footer {
    padding: 1.5rem 0 2.25rem;
}

.footer-name {
    margin: 0 0 0.35rem;
    font-weight: 700;
}

.confirmation-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 2rem;
}

.confirmation-card {
    width: min(100%, 680px);
    padding: 2.5rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--line);
}

@media (max-width: 860px) {
    .nav-shell,
    .footer-row,
    .hero-grid,
    .section-grid,
    .signup-grid {
        grid-template-columns: 1fr;
    }

    .nav-shell,
    .footer-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-section,
    .section {
        padding: 4rem 0;
    }

    .hero-panel {
        min-height: 320px;
    }
}