/* ============================================================
   Finance Assistant — Tela de Auth (Login / Registro)
   ============================================================ */

.auth-page {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

/* ─── Painel esquerdo (ilustração) ─────────────────────── */

.auth-panel {
    background: var(--color-sidebar-bg);
    padding: var(--space-12);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.auth-panel::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37,99,235,.25) 0%, transparent 70%);
    top: -100px;
    left: -100px;
    pointer-events: none;
}

.auth-panel::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(34,197,94,.15) 0%, transparent 70%);
    bottom: 80px;
    right: -60px;
    pointer-events: none;
}

.auth-panel-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    position: relative;
    z-index: 1;
}

.auth-panel-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-panel-logo-text {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-inverse);
}

.auth-panel-content {
    position: relative;
    z-index: 1;
}

.auth-panel-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-text-inverse);
    line-height: 1.2;
    margin-bottom: var(--space-4);
}

.auth-panel-title span {
    color: var(--color-primary);
}

.auth-panel-description {
    font-size: var(--text-base);
    color: var(--color-sidebar-text);
    line-height: 1.7;
    max-width: 380px;
}

.auth-panel-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-8);
}

.auth-panel-feature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-sidebar-text);
    font-size: var(--text-sm);
}

.auth-panel-feature-icon {
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,.07);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-primary);
}

.auth-panel-footer {
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    position: relative;
    z-index: 1;
}

/* ─── Painel direito (formulário) ───────────────────────── */

.auth-form-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-12) var(--space-8);
    background: var(--color-bg);
}

.auth-form-container {
    width: 100%;
    max-width: 420px;
}

.auth-form-header {
    margin-bottom: var(--space-8);
}

.auth-form-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.auth-form-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* ─── Abas login/registro ───────────────────────────────── */

.auth-tabs {
    display: flex;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 4px;
    margin-bottom: var(--space-8);
    gap: 4px;
}

.auth-tab {
    flex: 1;
    padding: var(--space-2) var(--space-4);
    border-radius: calc(var(--radius-md) - 4px);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: transparent;
    transition: all var(--transition-fast);
    text-align: center;
}

.auth-tab.active {
    background: var(--color-primary);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-sm);
}

.auth-tab:not(.active):hover {
    color: var(--color-text);
    background: var(--color-bg);
}

/* ─── Formulário ────────────────────────────────────────── */

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.auth-form-fields {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.input-with-icon {
    position: relative;
}

.input-with-icon .form-input {
    padding-left: 2.75rem;
}

.input-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
    display: flex;
}

.input-toggle-password {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    transition: color var(--transition-fast);
}

.input-toggle-password:hover {
    color: var(--color-text);
}

/* ─── Divisor ───────────────────────────────────────────── */

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-muted);
    font-size: var(--text-xs);
}

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

/* ─── Link de troca ─────────────────────────────────────── */

.auth-switch {
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-4);
}

.auth-switch a {
    color: var(--color-primary);
    font-weight: 500;
}

/* ─── Estado de loading no botão ────────────────────────── */

.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,.4);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 600ms linear infinite;
}

/* ─── Alerta de erro global ─────────────────────────────── */

.auth-alert {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    display: none;
    align-items: center;
    gap: var(--space-2);
}

.auth-alert.error {
    background: var(--color-danger-light);
    color: #B91C1C;
    border: 1px solid #FECACA;
    display: flex;
}

.auth-alert.success {
    background: var(--color-success-light);
    color: #15803D;
    border: 1px solid #BBF7D0;
    display: flex;
}

/* ─── Responsividade ────────────────────────────────────── */

@media (max-width: 900px) {
    .auth-page {
        grid-template-columns: 1fr;
    }

    .auth-panel {
        display: none;
    }

    .auth-form-panel {
        padding: var(--space-8) var(--space-5);
    }
}