/**
 * Button Component Styles
 */

/* ================================
   BASE BUTTON
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:hover {
    text-decoration: none;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ================================
   BUTTON VARIANTS
   ================================ */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.btn-secondary {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-gray-600);
    border-color: var(--color-gray-600);
}

.btn-success {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: var(--color-white);
}

.btn-success:hover {
    background-color: #16a34a;
    border-color: #16a34a;
}

.btn-warning {
    background-color: var(--color-warning);
    border-color: var(--color-warning);
    color: var(--color-white);
}

.btn-warning:hover {
    background-color: #d97706;
    border-color: #d97706;
}

.btn-danger {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    color: var(--color-white);
}

.btn-danger:hover {
    background-color: #dc2626;
    border-color: #dc2626;
}

.btn-info {
    background-color: var(--color-info);
    border-color: var(--color-info);
    color: var(--color-white);
}

.btn-info:hover {
    background-color: #0891b2;
    border-color: #0891b2;
}

/* ================================
   OUTLINE BUTTONS
   ================================ */
.btn-outline-primary {
    background-color: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline-primary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-outline-secondary {
    background-color: transparent;
    border-color: var(--color-gray-300);
    color: var(--color-gray-700);
}

.btn-outline-secondary:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-400);
}

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

.btn-outline-danger:hover {
    background-color: var(--color-danger);
    color: var(--color-white);
}

/* ================================
   GHOST BUTTONS
   ================================ */
.btn-ghost {
    background-color: transparent;
    border-color: transparent;
    color: var(--color-gray-700);
}

.btn-ghost:hover {
    background-color: var(--color-gray-100);
}

.btn-ghost-primary {
    background-color: transparent;
    border-color: transparent;
    color: var(--color-primary);
}

.btn-ghost-primary:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

/* ================================
   BUTTON SIZES
   ================================ */
.btn-xs {
    padding: 4px 8px;
    font-size: var(--font-size-xs);
}

.btn-sm {
    padding: 6px 12px;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 14px 28px;
    font-size: var(--font-size-base);
}

.btn-xl {
    padding: 18px 36px;
    font-size: var(--font-size-lg);
}

/* ================================
   BUTTON MODIFIERS
   ================================ */
.btn-block {
    display: flex;
    width: 100%;
}

.btn-rounded {
    border-radius: var(--radius-full);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
}

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

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

/* ================================
   BUTTON GROUPS
   ================================ */
.btn-group {
    display: inline-flex;
}

.btn-group .btn {
    border-radius: 0;
}

.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);
}

.btn-group .btn:not(:last-child) {
    border-right-width: 0;
}

/* ================================
   LOADING STATE
   ================================ */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: btn-spin 0.6s linear infinite;
}

@keyframes btn-spin {
    to {
        transform: rotate(360deg);
    }
}