:root {
    --blue-900: #0c2a5f;
    --blue-700: #1f4ea8;
    --blue-500: #3f74d8;
    --blue-050: #eef4ff;
    --bg-soft-white: #f8fbff;
    --text-main: #1c2b46;
    --text-muted: #5d6f8f;
    --red: #c0392b;
    --green: #1f9d6b;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-main);
    background:
        radial-gradient(circle at top right, var(--blue-050) 0%, rgba(238, 244, 255, 0) 45%),
        radial-gradient(circle at bottom left, #e8f1ff 0%, rgba(232, 241, 255, 0) 40%),
        var(--bg-soft-white);
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: #ffffff;
    border: 1px solid #e6eeff;
    border-radius: 18px;
    padding: 34px 30px;
    box-shadow: 0 16px 40px rgba(20, 60, 140, 0.12);
}

.login-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--blue-900);
    margin-bottom: 22px;
}
.brand-mark {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    color: #fff;
    background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
    font-weight: 800;
}

.login-title { margin: 0; color: var(--blue-900); font-size: 1.7rem; }
.login-subtitle { margin: 8px 0 20px; color: var(--text-muted); font-size: 0.96rem; }

.message {
    margin: 0 0 14px;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 0.9rem;
    border: 1px solid transparent;
}
.message-error { background: #fdecea; color: var(--red); border-color: #f3c2bb; }
.message-success { background: #e7f7ef; color: var(--green); border-color: #b6e6cf; }
.message-info { background: var(--blue-050); color: var(--blue-900); border-color: #bfd5ff; }

.login-form { display: flex; flex-direction: column; gap: 8px; }
.login-form label { margin-top: 6px; color: var(--blue-900); font-size: 0.88rem; font-weight: 600; }
.login-form input {
    width: 100%;
    border: 1px solid #ccdbff;
    border-radius: 10px;
    padding: 12px 13px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 180ms ease, box-shadow 180ms ease;
}
.login-form input:focus { border-color: var(--blue-500); box-shadow: 0 0 0 4px rgba(63, 116, 216, 0.18); }

.login-form button {
    margin-top: 16px;
    border: none;
    border-radius: 10px;
    padding: 12px;
    background: linear-gradient(135deg, var(--blue-700), var(--blue-500));
    color: #fff;
    font-weight: 700;
    font-size: 0.97rem;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 180ms ease;
}
.login-form button:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(31, 78, 168, 0.35); }

@media (max-width: 480px) {
    .login-card { padding: 26px 22px; border-radius: 14px; }
    .login-title { font-size: 1.5rem; }
}