:root {
    color-scheme: dark;
    font-family: Inter, -apple-system, BlinkMacSystemFont,
        "Segoe UI", sans-serif;

    --background: #090d18;
    --surface: #151b2b;
    --border: #2a3448;
    --text: #f8fafc;
    --muted: #94a3b8;
    --accent: #818cf8;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(
            ellipse at 50% 0%,
            #202b50 0%,
            transparent 55%
        ),
        var(--background);

    color: var(--text);
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(100% - 40px, 1100px);
    margin: 0 auto;
}

.header {
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -1px;
}

.logo span {
    color: var(--accent);
}

.nav-link {
    color: var(--muted);
    font-size: 14px;
}

.nav-link:hover {
    color: white;
}

.hero {
    min-height: calc(100vh - 160px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.badge {
    border: 1px solid var(--border);
    border-radius: 30px;
    padding: 8px 16px;
    color: var(--accent);
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

h1 {
    font-size: clamp(42px, 6vw, 72px);
    letter-spacing: -3px;
    line-height: 1.1;
    margin: 28px 0;
}

.description {
    color: var(--muted);
    font-size: 18px;
    line-height: 1.7;
    max-width: 550px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 28px;
    border: none;
    border-radius: 12px;
    background: var(--accent);
    color: #090d18;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s;
}

.button:hover {
    background: #a5b4fc;
}

.button:disabled {
    opacity: 0.7;
    cursor: wait;
}

.hero .button {
    margin-top: 30px;
}

.login-container {
    min-height: calc(100vh - 160px);
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: 40px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
}

.login-card h1 {
    font-size: 30px;
    letter-spacing: -1px;
    margin: 0 0 12px;
}

.login-card p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.6;
}

.form-group {
    margin-top: 24px;
}

label {
    display: block;
    font-size: 13px;
    margin-bottom: 10px;
}

input {
    display: block;
    width: 100%;
    padding: 14px 16px;
    background: #0d1320;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: white;
    font-size: 15px;
    outline: none;
}

input:focus {
    border-color: var(--accent);
}

.login-card .button {
    margin-top: 30px;
    width: 100%;
}

.error {
    margin-top: 20px;
    padding: 14px;
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 10px;
}

.error[hidden] {
    display: none;
}

.footer {
    padding: 25px;
    text-align: center;
    color: var(--muted);
    font-size: 12px;
}

@media (max-width: 480px) {
    .login-card {
        padding: 28px 24px;
    }

    h1 {
        letter-spacing: -2px;
    }
}