/**
 * Button Components
 *
 * Conversion-optimized CTAs with orange primary actions
 * Depth-based styling without borders
 *
 * @package MattressProtectorReviews
 * @version 2.0.0 - Design System Transformation
 */

/* ============================================
   PRIMARY CTA - ORANGE (Conversion Optimized)
   Highest CTR/CVR performance
   ============================================ */
.cta-button {
    display: inline-block;
    padding: var(--btn-padding-y) var(--btn-padding-x);
    font-size: var(--text-lg);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    color: var(--white);
    background: var(--gradient-cta);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--highlight-top), 0 4px 12px rgba(234, 88, 12, 0.3);
    position: relative;
    overflow: hidden;
}

.cta-button:hover {
    background: var(--gradient-cta-hover);
    transform: translateY(-2px);
    box-shadow: var(--highlight-strong), 0 6px 16px rgba(234, 88, 12, 0.4);
}

.cta-button:active {
    transform: translateY(0);
    box-shadow: var(--highlight-top), 0 2px 8px rgba(234, 88, 12, 0.3);
}

/* Shimmer effect on hover - premium feel */
.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.cta-button:hover::before {
    left: 100%;
}

/* Fix: Ensure links inside orange buttons stay white (but NOT secondary) */
.cta-button:not(.cta-secondary),
.cta-button:not(.cta-secondary):hover,
.cta-button:not(.cta-secondary):visited,
.cta-button:not(.cta-secondary):active {
    color: var(--white);
    text-decoration: none;
}

.btn-check-price,
.btn-check-price:hover,
.btn-check-price:visited,
.btn-check-price:active {
    color: var(--white);
    text-decoration: none;
}

.mpr-btn-primary,
.mpr-btn-primary:hover,
.mpr-btn-primary:visited,
.mpr-btn-primary:active,
.mpr-btn-cta,
.mpr-btn-cta:hover,
.mpr-btn-cta:visited,
.mpr-btn-cta:active {
    color: var(--white);
    text-decoration: none;
}

/* Secondary buttons - visible text on light backgrounds */
.cta-button.cta-secondary,
.cta-button.cta-secondary:hover,
.cta-button.cta-secondary:visited,
.cta-button.cta-secondary:active {
    color: var(--gray-700) !important;
    text-decoration: none;
}

/* Size Variants */
.cta-button-large {
    padding: var(--btn-padding-lg-y) var(--btn-padding-lg-x);
    font-size: var(--text-xl);
}

.cta-button-compact {
    padding: var(--btn-padding-sm-y) var(--btn-padding-sm-x);
    font-size: var(--text-sm);
    white-space: nowrap;
    min-height: 44px;
}

.cta-button:focus {
    outline: 2px solid var(--orange-300);
    outline-offset: 3px;
}

/* ============================================
   PRODUCT ACTION BUTTONS
   ============================================ */
.product-action-btn {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    display: block;
    border: none;
}

/* Primary Action - Orange (Check Price, Buy Now) */
.btn-check-price {
    background: var(--gradient-cta);
    color: var(--white);
    box-shadow: var(--highlight-top), 0 2px 6px rgba(234, 88, 12, 0.25);
}

.btn-check-price:hover {
    background: var(--gradient-cta-hover);
    transform: translateY(-2px);
    box-shadow: var(--highlight-strong), 0 4px 10px rgba(234, 88, 12, 0.35);
}

.btn-check-price:active {
    transform: translateY(0);
}

/* Secondary Action - Blue (Read Review, Learn More) */
.btn-read-review {
    background: var(--layer-3);
    color: var(--blue-600);
    box-shadow: var(--shadow-small);
}

.btn-read-review:hover {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--highlight-top), 0 3px 8px rgba(37, 99, 235, 0.25);
    transform: translateY(-1px);
}

.btn-read-review:active {
    transform: translateY(0);
}

/* ============================================
   BUTTON STYLES (Generic Classes)
   ============================================ */
/* Primary - Orange CTA */
.mpr-btn-primary,
.mpr-btn-cta {
    background: var(--gradient-cta);
    color: var(--white);
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--highlight-top), 0 2px 6px rgba(234, 88, 12, 0.3);
}

.mpr-btn-primary:hover,
.mpr-btn-cta:hover {
    background: var(--gradient-cta-hover);
    box-shadow: var(--highlight-strong), 0 4px 10px rgba(234, 88, 12, 0.4);
    transform: translateY(-1px);
}

/* Secondary - Blue (Trust) */
.mpr-btn-secondary {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--highlight-top), 0 2px 6px rgba(37, 99, 235, 0.3);
}

.mpr-btn-secondary:hover {
    background: var(--gradient-secondary);
    box-shadow: var(--highlight-strong), 0 4px 10px rgba(37, 99, 235, 0.4);
    transform: translateY(-1px);
}

/* Ghost/Outline - Subtle */
.mpr-btn-ghost,
.mpr-btn-outline {
    background: var(--layer-3);
    color: var(--text-body);
    padding: var(--btn-padding-y) var(--btn-padding-x);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-small);
}

.mpr-btn-ghost:hover,
.mpr-btn-outline:hover {
    background: var(--layer-4);
    box-shadow: var(--shadow-medium);
    transform: translateY(-1px);
}

/* Text Button - Minimal */
.mpr-btn-text {
    background: transparent;
    color: var(--blue-600);
    padding: var(--btn-padding-sm-y) var(--btn-padding-sm-x);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mpr-btn-text:hover {
    background: var(--layer-3);
    color: var(--blue-700);
}

/* ============================================
   BUTTON SIZES
   ============================================ */
.mpr-btn-sm {
    padding: var(--btn-padding-sm-y) var(--btn-padding-sm-x);
    font-size: var(--text-sm);
}

.mpr-btn-lg {
    padding: var(--btn-padding-lg-y) var(--btn-padding-lg-x);
    font-size: var(--text-lg);
}

/* ============================================
   BUTTON STATES
   ============================================ */
.mpr-btn:disabled,
.cta-button:disabled,
.product-action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Loading State */
.mpr-btn-loading {
    position: relative;
    color: transparent;
}

.mpr-btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ============================================
   BUTTON GROUPS
   ============================================ */
.mpr-btn-group {
    display: flex;
    gap: 0.5rem;
}

.mpr-btn-group-vertical {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* ============================================
   SEMANTIC BUTTONS
   ============================================ */
.mpr-btn-success {
    background: linear-gradient(to bottom, var(--green-500), var(--green-600));
    color: var(--white);
    box-shadow: var(--highlight-top), 0 2px 6px rgba(22, 163, 74, 0.3);
}

.mpr-btn-success:hover {
    background: linear-gradient(to bottom, var(--green-400), var(--green-500));
    box-shadow: var(--highlight-strong), 0 4px 10px rgba(22, 163, 74, 0.4);
}

.mpr-btn-warning {
    background: linear-gradient(to bottom, var(--yellow-400), var(--yellow-500));
    color: var(--gray-900);
    box-shadow: var(--highlight-top), 0 2px 6px rgba(234, 179, 8, 0.3);
}

.mpr-btn-warning:hover {
    background: linear-gradient(to bottom, var(--yellow-300), var(--yellow-400));
    box-shadow: var(--highlight-strong), 0 4px 10px rgba(234, 179, 8, 0.4);
}

.mpr-btn-danger {
    background: linear-gradient(to bottom, var(--red-500), var(--red-600));
    color: var(--white);
    box-shadow: var(--highlight-top), 0 2px 6px rgba(220, 38, 38, 0.3);
}

.mpr-btn-danger:hover {
    background: linear-gradient(to bottom, var(--red-400), var(--red-500));
    box-shadow: var(--highlight-strong), 0 4px 10px rgba(220, 38, 38, 0.4);
}

/* ============================================
   MOBILE TOUCH TARGETS
   Ensure 44px minimum height for accessibility
   ============================================ */
@media (max-width: 768px) {
    .cta-button {
        min-height: 56px;
        font-size: var(--text-base);
        padding: 1rem 1.5rem;
    }

    .product-action-btn {
        padding: 0.75rem 1rem;
        font-size: var(--text-sm);
        min-height: 44px;
    }

    .mpr-btn-primary,
    .mpr-btn-secondary,
    .mpr-btn-cta {
        min-height: 48px;
        padding: 0.875rem 1.25rem;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
.mpr-btn:focus-visible,
.cta-button:focus-visible,
.product-action-btn:focus-visible {
    outline: 3px solid var(--orange-300);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .cta-button,
    .product-action-btn,
    .mpr-btn-primary,
    .mpr-btn-secondary {
        transition: none;
    }

    .cta-button::before {
        display: none;
    }
}