/* Button Styles */

.btn {
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.btn:active {
    transform: scale(0.98);
}

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

.btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
}

/* Secondary button */
.btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

/* Ghost button */
.btn-ghost {
    background: transparent;
    color: var(--gray-600);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--gray-100);
    color: var(--gray-900);
}

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

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

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

.btn-success:hover:not(:disabled) {
    background: #059669;
}

/* Button sizes */
.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-sm svg {
    width: 16px;
    height: 16px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn-lg svg {
    width: 20px;
    height: 20px;
}

/* Icon-only button */
.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

/* Button group */
.btn-group {
    display: flex;
    gap: 8px;
}

/* Dropdown button */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 4px);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    z-index: 1000;
    padding: 4px 0;
}

.dropdown.open .dropdown-menu {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 16px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 13px;
    color: var(--gray-700);
    transition: background var(--transition-fast);
    text-align: left;
}

.dropdown-item:hover {
    background: var(--gray-50);
}

.dropdown-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: var(--gray-400);
}

.dropdown-item:hover svg {
    color: var(--primary);
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 4px 0;
}

/* Refresh button animation */
.btn-refresh.loading svg {
    animation: spin 1s linear infinite;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .btn {
        padding: 12px 18px;
        font-size: 14px;
        min-height: 44px; /* Touch target */
    }

    .btn-sm {
        padding: 10px 14px;
        font-size: 13px;
        min-height: 40px;
    }

    .btn-icon {
        width: 44px;
        height: 44px;
    }

    .btn-icon.btn-sm {
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .btn-group {
        flex-direction: column;
        width: 100%;
    }

    .btn-group .btn {
        width: 100%;
    }
}