:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --border: #e5e7eb;
    --danger: #dc2626;
    --success: #16a34a;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family:
        Inter,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    background: var(--bg);
    color: var(--text);
}

.auth-page {
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 24px;
}

.auth-card {
    width: 100%;
    max-width: 460px;

    background: var(--card);

    border: 1px solid var(--border);
    border-radius: 20px;

    box-shadow:
        0 20px 50px rgba(15, 23, 42, 0.08);

    overflow: hidden;
}

.auth-brand {
    text-align: center;
    padding: 36px 32px 20px;
}

.auth-logo {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.auth-content {
    padding: 10px 36px 36px;
}

.auth-footer {
    border-top: 1px solid var(--border);

    padding: 18px;

    text-align: center;

    color: var(--muted);

    font-size: 13px;
}

.messages {
    margin-bottom: 20px;
}

.message {
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 10px;
    font-size: 14px;
}

.message-error {
    color: var(--danger);
    background: #fef2f2;
}

.message-success {
    color: var(--success);
    background: #f0fdf4;
}

input,
select {
    width: 100%;

    padding: 12px 14px;

    border: 1px solid var(--border);
    border-radius: 10px;

    font-size: 15px;

    outline: none;

    transition:
        border-color 0.2s,
        box-shadow 0.2s;
}

input:focus,
select:focus {
    border-color: var(--primary);

    box-shadow:
        0 0 0 3px rgba(99, 102, 241, 0.12);
}

button,
input[type="submit"] {
    width: 100%;
    margin-top: 10px;
    border: 0;
    border-radius: 10px;

    padding: 13px 16px;

    background: var(--primary);
    color: white;

    font-size: 15px;
    font-weight: 700;

    cursor: pointer;

    transition:
        background 0.2s,
        transform 0.1s;
}

button:hover,
input[type="submit"]:hover {
    background: var(--primary-hover);
}

button:active,
input[type="submit"]:active {
    transform: translateY(1px);
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

@media (max-width: 520px) {
    .auth-page {
        padding: 12px;
    }

    .auth-card {
        border-radius: 16px;
    }

    .auth-content {
        padding: 10px 22px 28px;
    }

    .auth-brand {
        padding-top: 28px;
    }
}