:root {
    --bg: #12151a;
    --card: #1a1f27;
    --border: #2c3440;
    --text: #e8edf4;
    --muted: #8b96a8;
    --accent: #2bb3a3;
    --accent-hover: #239e90;
    --danger: #e35d6a;
    --font: "IBM Plex Sans", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    min-height: 100vh;
    font-family: var(--font);
    color: var(--text);
    background:
        radial-gradient(900px 420px at 50% -10%, rgba(43, 179, 163, 0.12), transparent 55%),
        var(--bg);
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-shell { width: min(420px, 100%); }

.login-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px 24px 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.login-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 22px;
}

.brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    font-weight: 700;
    color: #061317;
    background: linear-gradient(145deg, #2bb3a3, #1f7a8c);
}

.login-brand h1 {
    font-size: 20px;
    font-weight: 650;
}

.login-brand p {
    color: var(--muted);
    font-size: 13px;
    margin-top: 2px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 14px;
}

.field span {
    font-size: 13px;
    color: var(--muted);
}

.field input {
    font: inherit;
    color: var(--text);
    background: #12151a;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 14px;
}

.field input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(43, 179, 163, 0.15);
}

.remember {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 18px;
    cursor: pointer;
}

.btn-primary {
    width: 100%;
    border: none;
    border-radius: 10px;
    padding: 12px 16px;
    font: inherit;
    font-weight: 600;
    background: var(--accent);
    color: #06201d;
    cursor: pointer;
}

.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.error {
    margin-top: 12px;
    color: var(--danger);
    font-size: 13px;
    text-align: center;
}