:root {
    color-scheme: light;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --ink: #172033;
    --muted: #667085;
    --line: #dbe2ea;
    --surface: #ffffff;
    --danger-bg: #fff1f2;
    --danger: #be123c;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--ink);
    background: #f5f7fb;
}

.page { min-height: 100vh; }

.page-login {
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(circle at 12% 18%, rgba(37, 99, 235, .15), transparent 30%),
        radial-gradient(circle at 88% 82%, rgba(14, 165, 233, .12), transparent 28%),
        #f7f9fc;
}

.card {
    width: min(100%, 420px);
    padding: 42px;
    border: 1px solid rgba(219, 226, 234, .8);
    border-radius: 20px;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 24px 70px rgba(31, 42, 68, .12);
}

.brand {
    display: grid;
    width: 50px;
    height: 50px;
    place-items: center;
    margin-bottom: 24px;
    border-radius: 14px;
    color: white;
    background: var(--primary);
    font-size: 24px;
    font-weight: 800;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .14em;
}

h1 { margin: 0; font-size: clamp(30px, 5vw, 40px); letter-spacing: -.035em; }
.subtitle { margin: 10px 0 30px; color: var(--muted); }

form { display: grid; gap: 10px; }
label { margin-top: 8px; font-size: 14px; font-weight: 650; }

input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    outline: none;
    font: inherit;
    transition: border-color .2s, box-shadow .2s;
}

input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(37, 99, 235, .12); }

button {
    margin-top: 14px;
    padding: 13px 18px;
    border: 0;
    border-radius: 10px;
    color: white;
    background: var(--primary);
    font: inherit;
    font-weight: 750;
    cursor: pointer;
}

button:hover { background: var(--primary-dark); }

.alert {
    margin-bottom: 18px;
    padding: 12px 14px;
    border-radius: 10px;
    color: var(--danger);
    background: var(--danger-bg);
    font-size: 14px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 70px;
    padding: 0 clamp(22px, 5vw, 72px);
    border-bottom: 1px solid var(--line);
    background: var(--surface);
}

.logo { color: var(--ink); font-size: 21px; font-weight: 800; text-decoration: none; }
.account { display: flex; align-items: center; gap: 18px; color: var(--muted); font-size: 14px; }
.logout { color: var(--primary); font-weight: 700; text-decoration: none; }
.dashboard { display: grid; min-height: calc(100vh - 71px); place-items: center; padding: 24px; }
.welcome { text-align: center; }
.welcome h1 { font-size: clamp(42px, 8vw, 80px); }

@media (max-width: 520px) {
    .card { padding: 30px 24px; }
    .account span { display: none; }
}