:root {
    color-scheme: light;
    --bg: linear-gradient(135deg, #f4f7fb 0%, #edf4f2 45%, #e7eef9 100%);
    --card: #ffffff;
    --text: #0f1a2f;
    --muted: #51607f;
    --accent: #0b6d53;
    --accent-2: #164c8f;
    --danger: #a1283f;
    --success: #1d7b4a;
    --border: #d7dfed;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Manrope", "Segoe UI Variable", "Noto Sans", sans-serif;
    background: var(--bg);
    color: var(--text);
}

.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 18px;
}

.login-card {
    width: min(420px, 100%);
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 28px;
    box-shadow: 0 24px 60px rgba(12, 31, 63, 0.14);
}

.login-card h1 {
    margin: 0 0 6px;
    font-size: 1.6rem;
    letter-spacing: 0.2px;
}

.subtitle {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 0.93rem;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

input {
    width: 100%;
    margin-bottom: 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 13px;
    font: inherit;
    background: #fff;
}

input:focus {
    outline: none;
    border-color: var(--accent-2);
    box-shadow: 0 0 0 3px rgba(22, 76, 143, 0.17);
}

button {
    width: 100%;
    border: 0;
    border-radius: 12px;
    padding: 12px 15px;
    font: inherit;
    font-weight: 700;
    color: #fff;
    cursor: pointer;
    background: linear-gradient(130deg, var(--accent-2), var(--accent));
}

.alert {
    border-radius: 12px;
    padding: 10px 12px;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.alert-error {
    background: #fbeef1;
    color: var(--danger);
}

.alert-success {
    background: #e9f8ef;
    color: var(--success);
}

.login-hint {
    margin-top: 16px;
    border-top: 1px dashed var(--border);
    padding-top: 13px;
    color: var(--muted);
    font-size: 0.84rem;
}

code {
    font-family: "Fira Code", "Cascadia Mono", "Consolas", monospace;
}