:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --border: #2e3248;
    --text: #e2e4f0;
    --text-muted: #7b82a8;
    --accent: #6c72f5;
    --accent-h: #8087ff;
    --danger: #e05c6a;
    --success: #4caf82;
    --radius: 8px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;
}

.portal-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.portal-header {
    text-align: center;
    margin-bottom: 2rem;
}

.portal-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.portal-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.form-group label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color 0.15s;
    width: 100%;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
    font-family: inherit;
    margin-top: 0.5rem;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-h);
}

.toggle-mode {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.toggle-mode span {
    color: var(--accent);
    cursor: pointer;
    font-weight: 500;
    text-decoration: underline;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
    line-height: 1.4;
}

.alert-danger {
    background: rgba(224, 92, 106, 0.15);
    border: 1px solid rgba(224, 92, 106, 0.3);
    color: var(--danger);
}

.alert-success {
    background: rgba(76, 175, 130, 0.15);
    border: 1px solid rgba(76, 175, 130, 0.3);
    color: var(--success);
}