/* ═══════════════════════════════════════════════
   AUTH.CSS — Login / Signup Page
   Synaptic v2 Design System
   Phase 18H
   ═══════════════════════════════════════════════ */

/* ── Page Shell ── */
.sv2-auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    padding: 24px;
}

/* ── Card ── */
.sv2-auth-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.08);
    width: 100%;
    max-width: 400px;
    padding: 40px 36px 36px;
}

[data-theme="dark"] .sv2-auth-card {
    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.32);
}

/* ── Logo Block ── */
.sv2-auth-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 28px;
}

.sv2-auth-logo img {
    width: 40px;
    height: 40px;
}

.sv2-auth-logo-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.3px;
}

/* ── Tabs ── */
.sv2-auth-tabs {
    display: flex;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 3px;
    margin-bottom: 28px;
    gap: 2px;
}

.sv2-auth-tab {
    flex: 1;
    padding: 8px 12px;
    border: none;
    border-radius: calc(var(--radius-md) - 2px);
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.sv2-auth-tab:hover {
    color: var(--color-text-primary);
}

.sv2-auth-tab.active {
    background: var(--color-surface);
    color: var(--color-text-primary);
    font-weight: 600;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .sv2-auth-tab.active {
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.24);
}

/* ── Form ── */
.sv2-auth-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.sv2-auth-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sv2-auth-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.sv2-auth-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 14px;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-sizing: border-box;
}

.sv2-auth-input::placeholder {
    color: var(--color-text-tertiary);
}

.sv2-auth-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 15%, transparent);
}

/* ── Error Message ── */
.sv2-auth-error {
    display: none;
    padding: 10px 14px;
    background: color-mix(in srgb, #EF4444 10%, transparent);
    border: 1px solid color-mix(in srgb, #EF4444 25%, transparent);
    border-radius: var(--radius-md);
    color: #DC2626;
    font-size: 13px;
    font-weight: 500;
}

[data-theme="dark"] .sv2-auth-error {
    color: #FCA5A5;
    background: color-mix(in srgb, #EF4444 15%, transparent);
    border-color: color-mix(in srgb, #EF4444 30%, transparent);
}

/* ── Primary Button ── */
.sv2-auth-btn-primary {
    width: 100%;
    padding: 11px 16px;
    background: var(--color-accent);
    color: #FFFFFF;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition-fast), opacity var(--transition-fast);
    margin-top: 4px;
}

.sv2-auth-btn-primary:hover {
    background: var(--color-accent-hover);
}

.sv2-auth-btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ── Divider ── */
.sv2-auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 4px 0;
}

.sv2-auth-divider-line {
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.sv2-auth-divider-text {
    font-size: 12px;
    color: var(--color-text-tertiary);
    font-weight: 500;
    white-space: nowrap;
}

/* ── OAuth Buttons ── */
.sv2-auth-oauth {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sv2-auth-btn-oauth {
    width: 100%;
    padding: 10px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: background var(--transition-fast), border-color var(--transition-fast);
    text-decoration: none;
}

.sv2-auth-btn-oauth:hover {
    background: var(--color-bg);
    border-color: var(--color-accent);
}

.sv2-auth-btn-oauth svg,
.sv2-auth-btn-oauth img {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* ── Footer Note ── */
.sv2-auth-footer {
    margin-top: 20px;
    text-align: center;
    font-size: 12px;
    color: var(--color-text-tertiary);
    line-height: 1.5;
}

.sv2-auth-footer a {
    color: var(--color-accent);
    text-decoration: none;
}

.sv2-auth-footer a:hover {
    text-decoration: underline;
}

/* ── Mobile ── */
@media (max-width: 480px) {
    .sv2-auth-card {
        padding: 32px 24px 28px;
        border-radius: var(--radius-lg);
    }
}