* {
    box-sizing: border-box;
}

:root {
    --bg: #04172a;
    --panel: rgba(14, 42, 66, 0.94);
    --panel-dark: #071e33;
    --border: #31516d;
    --text: #f5f8fb;
    --muted: #a9bfd2;
    --accent: #1bd6d1;
    --success: #25d994;
    --error: #ff8e8e;
    --warning: #ffd166;
}

html {
    color-scheme: dark;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 15% 20%, rgba(0, 186, 255, .10), transparent 22%),
        radial-gradient(circle at 85% 25%, rgba(27, 214, 209, .08), transparent 24%),
        linear-gradient(145deg, #031221, var(--bg));
}

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

.auth-page {
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: min(100%, 500px);
    padding: 38px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--panel);
    box-shadow: 0 28px 80px rgba(0, 0, 0, .42);
}

.status-pill {
    width: max-content;
    margin: 0 auto 26px;
    padding: 9px 14px;
    border-radius: 999px;
    background: #078b65;
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .04em;
}

.status-pill span {
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 8px;
    border-radius: 50%;
    background: white;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    border: 2px solid var(--accent);
    border-radius: 50%;
    color: var(--accent);
    font-size: 34px;
    font-weight: 900;
}

.eyebrow {
    margin: 0 0 8px;
    text-align: center;
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .18em;
}

h1 {
    margin: 0 0 10px;
    text-align: center;
    font-size: clamp(30px, 7vw, 45px);
}

.muted {
    color: var(--muted);
    text-align: center;
    line-height: 1.6;
}

label {
    display: block;
    margin: 18px 0 8px;
    font-weight: 700;
}

input {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 11px;
    outline: none;
    background: var(--panel-dark);
    color: var(--text);
    font-size: 16px;
}

input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(27, 214, 209, .12);
}

button,
.button {
    display: block;
    width: 100%;
    margin-top: 24px;
    padding: 14px 18px;
    border: 0;
    border-radius: 11px;
    background: linear-gradient(135deg, #08a978, #16c6a0);
    color: white;
    text-align: center;
    text-decoration: none;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
}

.alert {
    margin: 22px 0;
    padding: 14px;
    border-radius: 11px;
    background: var(--panel-dark);
    line-height: 1.5;
}

.alert.error {
    border: 1px solid rgba(255, 142, 142, .45);
    color: var(--error);
}

.alert.success {
    border: 1px solid rgba(37, 217, 148, .45);
    color: var(--success);
}

.alert.warning {
    border: 1px solid rgba(255, 209, 102, .45);
    color: var(--warning);
}

.version {
    margin: 26px 0 0;
    color: var(--muted);
    text-align: center;
    font-size: 13px;
}

.dashboard-page {
    background: #06182b;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 5vw;
    border-bottom: 1px solid var(--border);
    background: #071e33;
}

.topbar div,
.topbar nav {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar span {
    color: var(--muted);
}

.topbar a {
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 9px;
    text-decoration: none;
}

.dashboard-shell {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 52px 0;
}

.welcome h1,
.welcome .eyebrow,
.welcome .muted {
    text-align: left;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    margin-top: 34px;
}

.stat-card,
.system-panel {
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #102a42;
    box-shadow: 0 18px 50px rgba(0, 0, 0, .18);
}

.stat-card {
    padding: 24px;
}

.stat-card span,
.stat-card small {
    display: block;
    color: var(--muted);
}

.stat-card strong {
    display: block;
    margin: 14px 0;
    color: var(--accent);
    font-size: 28px;
}

.system-panel {
    margin-top: 22px;
    padding: 26px;
}

.system-panel h2 {
    margin-top: 0;
}

.system-panel li {
    margin: 10px 0;
    color: var(--muted);
}

@media (max-width: 850px) {
    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .auth-card {
        padding: 28px 22px;
    }

    .topbar,
    .topbar div,
    .topbar nav {
        align-items: flex-start;
        flex-direction: column;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}