:root {
    color-scheme: dark;
    --background: #0c0d0f;
    --surface: #17191d;
    --surface-raised: #202329;
    --border: #343840;
    --text: #f5f5f5;
    --muted: #a7abb3;
    --accent: #d62f2f;
    --accent-dark: #991f1f;
    --success: #35b56a;
    --warning: #e0a52e;
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at top right, rgba(214, 47, 47, 0.12), transparent 28rem),
        var(--background);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.55;
}

.container {
    width: min(1120px, calc(100% - 2rem));
    margin: 2rem auto;
}

.site-header {
    border-bottom: 1px solid var(--border);
    background: rgba(12, 13, 15, 0.94);
}

.site-header .container,
.site-footer .container {
    margin-top: 0;
    margin-bottom: 0;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
}

.site-brand {
    display: inline-flex;
    flex: none;
    align-items: center;
    gap: 0.8rem;
    color: var(--text);
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
}

.site-brand__mark {
    display: grid;
    place-items: center;
    width: 2.6rem;
    height: 2.6rem;
    border-radius: 0.5rem;
    background: var(--accent);
    color: white;
    font-size: 0.95rem;
    font-weight: 800;
}

.site-brand:hover,
.site-navigation__link:hover,
.site-navigation__link:focus-visible {
    color: var(--accent);
}

.site-navigation {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 1.5rem;
}

.site-navigation__link {
    color: var(--text);
    font-weight: 600;
    text-decoration: none;
}

main.container {
    flex: 1 0 auto;
}

.hero {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.25rem 2rem;
    margin-bottom: 1.25rem;
}

.hero h1 {
    margin: 0.25rem 0 0.75rem;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.05;
}

.hero p,
.lead {
    max-width: 48rem;
    color: var(--muted);
    line-height: 1.7;
}

.hero .lead {
    margin-bottom: 0;
}

.eyebrow {
    margin: 0;
    color: var(--accent) !important;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.16em;
}

.panel {
    margin-top: 1.25rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 0.85rem;
    background: linear-gradient(145deg, var(--surface-raised), var(--surface));
    box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.18);
}

.section-heading {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.section-heading h2 {
    margin: 0.25rem 0 0;
    font-size: 1.45rem;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    min-height: 2rem;
    padding: 0.35rem 0.7rem;
    border: 1px solid rgba(53, 181, 106, 0.5);
    border-radius: 999px;
    background: rgba(53, 181, 106, 0.12);
    color: #79dfa1;
    font-size: 0.82rem;
    font-weight: 700;
}

.status-badge.warning {
    border-color: rgba(224, 165, 46, 0.5);
    background: rgba(224, 165, 46, 0.12);
    color: #f2c45c;
}

.alert {
    margin: 1.25rem 0;
    padding: 1rem;
    border-radius: 6px;
}

.alert--info {
    border: 1px solid rgba(214, 47, 47, 0.48);
    background: rgba(214, 47, 47, 0.1);
    color: #ededed;
}

.alert--error {
    border: 1px solid #a83232;
    background: rgba(168, 50, 50, 0.18);
    color: #ffb0b0;
}

.alert--success {
    border: 1px solid #347c48;
    background: rgba(52, 124, 72, 0.18);
    color: #a6e7b8;
}

.alert--warning {
    border: 1px solid #a9791f;
    background: rgba(169, 121, 31, 0.18);
    color: #f2c45c;
}

.pairing-form {
    display: grid;
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.form-group {
    display: grid;
    gap: 0.45rem;
}

.form-group label {
    font-weight: 700;
}

.form-group input {
    width: 100%;
    min-height: 54px;
    padding: 0.7rem 0.8rem;
    border: 1px solid #555;
    border-radius: 6px;
    background: #181818;
    color: #fff;
    font: inherit;
    font-size: 1.35rem;
    font-weight: 800;
    text-align: center;
    text-transform: uppercase;
}

.form-group input:focus {
    border-color: #d82929;
    outline: 2px solid rgba(216, 41, 41, 0.28);
    outline-offset: 1px;
}

.form-hint {
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.button {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.1rem;
    border: 0;
    border-radius: 6px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.button--primary {
    background: #d82929;
    color: #fff;
}

.button--primary:hover,
.button--primary:focus-visible {
    background: #eb3434;
}

.site-footer {
    flex: none;
    padding: 1rem 0;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.8rem;
}

.site-footer__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1rem;
}

@media (max-width: 700px) {
    .container {
        margin-top: 1.5rem;
    }

    .site-header__inner {
        align-items: flex-start;
        flex-direction: column;
        gap: 1rem;
    }

    .hero,
    .section-heading {
        display: block;
    }

    .status-badge {
        margin-top: 1rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-actions .button {
        width: 100%;
    }
}