/* ==============================================
   Buttons
   ============================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    font-family: inherit;
    white-space: nowrap;
}

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

.btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* Primary */
.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    opacity: 0.9;
}

.btn-primary:active:not(:disabled) {
    transform: scale(0.98);
}

/* Secondary / Ghost */
.btn-ghost {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

/* Danger */
.btn-danger {
    background: var(--danger-soft);
    color: var(--danger);
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger);
    color: white;
}

/* Success */
.btn-success {
    background: var(--success-soft);
    color: var(--success);
}

.btn-success:hover:not(:disabled) {
    background: var(--success);
    color: white;
}

/* Warning */
.btn-warning {
    background: var(--warning-soft);
    color: var(--warning);
}

/* Sizes */
.btn-sm {
    padding: 6px 10px;
    font-size: 11px;
    gap: 4px;
}

.btn-sm svg {
    width: 14px;
    height: 14px;
}

.btn-lg {
    padding: 12px 20px;
    font-size: 14px;
}

.btn-lg svg {
    width: 18px;
    height: 18px;
}

/* Icon button */
.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.btn-icon svg {
    width: 18px;
    height: 18px;
}

.btn-icon-sm {
    width: 28px;
    height: 28px;
}

.btn-icon-sm svg {
    width: 14px;
    height: 14px;
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    transition: all var(--transition-fast);
}

.fab:hover {
    transform: scale(1.05);
}

.fab svg {
    width: 24px;
    height: 24px;
}

/* Button Group */
.btn-group {
    display: inline-flex;
    gap: 1px;
    background: var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.btn-group .btn {
    border-radius: 0;
    border: none;
}

.btn-group .btn:first-child {
    border-top-left-radius: var(--radius-md);
    border-bottom-left-radius: var(--radius-md);
}

.btn-group .btn:last-child {
    border-top-right-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
}