/* #region Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #0a0a0f;
    --color-surface: rgba(255, 255, 255, 0.06);
    --color-surface-hover: rgba(255, 255, 255, 0.1);
    --color-border: rgba(255, 255, 255, 0.1);
    --color-text: #f0f0f5;
    --color-text-muted: #8888a0;
    --color-primary: #6366f1;
    --color-primary-hover: #818cf8;
    --color-error: #ef4444;
    --color-error-bg: rgba(239, 68, 68, 0.12);
    --color-google: #4285f4;
    --color-discord: #5865f2;
    --radius: 12px;
    --radius-sm: 8px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}
/* #endregion */

/* #region Auth Page Layout */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1.5rem;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        var(--color-bg);
}

.auth-container {
    width: 100%;
    max-width: 420px;
}
/* #endregion */

/* #region Glassmorphism Card */
.auth-card {
    background: var(--color-surface);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
}
/* #endregion */

/* #region Header */
.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo {
    display: inline-block;
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-primary);
    text-decoration: none;
    margin-bottom: 1rem;
}

.auth-header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.35rem;
}

.auth-header p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}
/* #endregion */

/* #region Error Display */
.auth-error {
    background: var(--color-error-bg);
    border: 1px solid rgba(239, 68, 68, 0.25);
    color: #fca5a5;
    font-size: 0.85rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.25rem;
    text-align: center;
}
/* #endregion */

/* #region Form */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.form-group input {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.7rem 0.85rem;
    font-size: 0.95rem;
    color: var(--color-text);
    font-family: var(--font);
    transition: border-color 0.2s, background 0.2s;
    outline: none;
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.form-group input:focus {
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.07);
}
/* #endregion */

/* #region Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, transform 0.1s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    margin-top: 0.5rem;
}

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-oauth {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    flex: 1;
}

.btn-oauth:hover {
    background: var(--color-surface-hover);
}

.btn-google:hover {
    border-color: var(--color-google);
}

.btn-discord:hover {
    border-color: var(--color-discord);
}
/* #endregion */

/* #region OAuth Divider */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

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

.auth-divider span {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
}
/* #endregion */

/* #region OAuth Buttons Layout */
.oauth-buttons {
    display: flex;
    gap: 0.75rem;
}
/* #endregion */

/* #region Footer */
.auth-footer {
    text-align: center;
    margin-top: 1.75rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-border);
}

.auth-footer p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.auth-footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}
/* #endregion */

/* #region Responsive */
@media (max-width: 480px) {
    .auth-card {
        padding: 2rem 1.25rem;
    }

    .oauth-buttons {
        flex-direction: column;
    }
}
/* #endregion */