/**
FileName: assets/css/auth.css
Version: 0.3.0
Written based on the version: 0.2.0
Purpose: Authentication forms styling using semantic tokens
Decision Log:
  0.3.0 NEW: Dark-mode-safe surfaces and text via tokens
  0.3.0 FIX: Container, tabs, footer now use semantic borders/surfaces
Dependencies: tokens.css, components.css
Impact Map: Authentication UI
Used By: tpl-auth.php
Namespace-location: CSS classes
Owner: A-SUN Studio
*/

.asun-auth-container {
    max-width: 400px;
    margin: 2rem auto;
    background: var(--surface-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-asymmetric);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.asun-auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.asun-auth-tab {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.asun-auth-tab:hover {
    color: var(--color-primary);
}

.asun-auth-tab.is-active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.asun-auth-panel {
    display: none;
    padding: var(--spacing-lg);
}

.asun-auth-panel.is-active {
    display: block;
}

.asun-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.asun-form-actions {
    margin-top: var(--spacing-lg);
}

.asun-form-actions .asun-btn {
    width: 100%;
}

.asun-auth-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
}

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

.asun-auth-footer a:hover {
    text-decoration: underline;
}

.asun-form-group .required {
    color: var(--color-error);
}

@media (max-width: 480px) {
    .asun-auth-container {
        margin: 1rem;
        max-width: none;
    }

    .asun-form-row {
        grid-template-columns: 1fr;
    }
}