.btn {
    min-height: 40px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-default);
    background: var(--color-surface-secondary);
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    text-decoration: none;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-base), transform var(--transition-fast);
}

.btn:hover {
    border-color: var(--color-border-strong);
    background: var(--color-surface-tertiary);
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
    border-color: transparent;
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-surface-tertiary);
    color: var(--color-text-secondary);
}

.btn-ghost,
.btn-outline {
    background: transparent;
    color: var(--color-text-muted);
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
    border-color: transparent;
}

.btn-sm {
    min-height: 34px;
    padding: 6px 10px;
    font-size: var(--font-size-sm);
}

.card,
.settings-card,
.dashboard-section,
.stat-card {
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-default);
    background: var(--color-surface-secondary);
}

.card-elevated {
    box-shadow: var(--shadow-md);
}

.card-interactive {
    transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-base);
}

.card-interactive:hover {
    border-color: var(--color-border-strong);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

input[type="text"],
input[type="search"],
input[type="date"],
select,
textarea {
    width: 100%;
    min-height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-default);
    background: var(--color-surface-secondary);
    padding: 9px 12px;
}

.badge,
.pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 2px 10px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border: 1px solid transparent;
}

.pill-success { background: var(--color-success-soft); color: var(--color-success); }
.pill-warning { background: var(--color-warning-soft); color: var(--color-warning); }
.pill-danger { background: var(--color-danger-soft); color: var(--color-danger); }
.pill-muted { background: var(--color-surface-tertiary); color: var(--color-text-muted); border-color: var(--color-border-default); }

.modal-content,
.rename-page-dialog {
    background: var(--color-surface-secondary);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}