:root {
    --primary: #e11d48;
    --primary-hover: #be123c;
    --bg-dark: #09090b;
    --bg-card: #18181b;
    --text-main: #fafafa;
    --text-muted: #a1a1aa;
    --border: #27272a;
    --border-hover: #3f3f46;
    --btn-secondary-bg: #27272a;
    --btn-secondary-hover: #3f3f46;
    --success: #16a34a;
    --danger: #dc2626;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 2rem 1.5rem;
    -webkit-font-smoothing: antialiased;
}

.login-container {
    width: 100%;
    max-width: 440px;
}

.login-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2.75rem 2.25rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.logo-area {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-img {
    height: 48px;
    margin-bottom: 1.25rem;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.login-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.passkey-section {
    margin-bottom: 1.5rem;
}

.btn-passkey {
    width: 100%;
    padding: 0.85rem 1rem;
    background-color: var(--btn-secondary-bg);
    color: var(--text-main);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-passkey:hover {
    background-color: var(--btn-secondary-hover);
    border-color: var(--border-hover);
    color: #ffffff;
}

.btn-passkey:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-passkey i {
    font-size: 1.1rem;
    color: var(--primary);
}

.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1.5rem 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border);
}

.auth-divider span {
    padding: 0 0.85rem;
    color: var(--text-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: #09090b;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-main);
    font-size: 0.95rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.15);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.75rem;
}

.form-check-input {
    width: 1rem;
    height: 1rem;
    accent-color: var(--primary);
    cursor: pointer;
    border-radius: 4px;
    border: 1px solid var(--border);
    background-color: #09090b;
}

.form-check-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
}

.btn-login {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--primary);
    color: var(--text-main);
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.btn-login:hover {
    background-color: var(--primary-hover);
}

.alert {
    padding: 0.875rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-danger {
    background-color: #271418;
    border: 1px solid #7f1d1d;
    color: #fca5a5;
}

.alert-success {
    background-color: #0e271a;
    border: 1px solid #14532d;
    color: #86efac;
}

.alert-info {
    background-color: #111e2e;
    border: 1px solid #1e3a5f;
    color: #93c5fd;
}

.back-link {
    display: block;
    text-align: center;
    margin-top: 1.75rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s ease;
}

.back-link:hover {
    color: var(--text-main);
}

.back-link i {
    margin-right: 0.5rem;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    display: inline-block;
    animation: spinner-border 0.75s linear infinite;
}

@keyframes spinner-border {
    to {
        transform: rotate(360deg);
    }
}