/* ==========================================================================
   Button Styles - _buttons.css
   ========================================================================== */

/* CSS Custom Properties (Variables) */
:root {

  
  --btn-padding: 0.75rem 1.5rem;
  --btn-padding-sm: 0.5rem 1rem;
  --btn-padding-lg: 1rem 2rem;
  --btn-padding-xl: 1.25rem 2.5rem;
  
  --btn-font-size: 1rem;
  --btn-font-size-sm: 0.875rem;
  --btn-font-size-lg: 1.125rem;
  --btn-font-size-xl: 1.25rem;
  
  --btn-border-radius: 0.375rem;
  --btn-border-radius-sm: 0.25rem;
  --btn-border-radius-lg: 0.5rem;
  
  --btn-transition: all 0.4s ease-in-out;
  --btn-box-shadow-focus: 0 0 0 0.2rem;
  --btn-box-shadow-active: inset 0 3px 5px rgba(0, 0, 0, 0.125);
}

/* Base Button Class */
.os-btn {
  display: inline-block;
  padding: var(--btn-padding);
  margin-bottom: 0;
  font-size: var(--btn-font-size);
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--btn-border-radius);
  background-image: none;
  white-space: nowrap;
  user-select: none;
  transition: var(--btn-transition);
  position: relative;
  overflow: hidden;
}

.os-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.os-btn:hover::before {
  width: 300px;
  height: 300px;
}

.os-btn:focus,
.os-btn:active:focus,
.os-btn.active:focus {
  outline: 0;
  box-shadow: var(--btn-box-shadow-focus) rgba(0, 123, 255, 0.25);
}

.os-btn:hover {
  text-decoration: none;
  transition: var(--btn-transition);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.os-btn:active,
.os-btn.active {
  box-shadow: var(--btn-box-shadow-active);
  transform: translateY(1px);
}

.os-btn.disabled,
.os-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.os-btn.disabled:hover,
.os-btn:disabled:hover {
  transform: none;
  box-shadow: none;
}

/* Button Sizes */
.os-btn-sm {
  padding: var(--btn-padding-sm);
  font-size: var(--btn-font-size-sm);
  border-radius: var(--btn-border-radius-sm);
}

.os-btn-lg {
  padding: var(--btn-padding-lg);
  font-size: var(--btn-font-size-lg);
  border-radius: var(--btn-border-radius-lg);
}

.os-btn-xl {
  padding: var(--btn-padding-xl);
  font-size: var(--btn-font-size-xl);
  border-radius: var(--btn-border-radius-lg);
}

/* Block Button */
.os-btn-block {
  display: block;
  width: 100%;
}

/* Icon Buttons */
.os-btn-icon {
  width: 3rem;
  height: 3rem;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.os-btn-icon.os-btn-sm {
  width: 2.5rem;
  height: 2.5rem;
  font-size: var(--btn-font-size-sm);
}

.os-btn-icon.os-btn-lg {
  width: 3.5rem;
  height: 3.5rem;
  font-size: var(--btn-font-size-lg);
}

.os-btn-icon.os-btn-xl {
  width: 4rem;
  height: 4rem;
  font-size: var(--btn-font-size-xl);
}

/* Button Icons */
.os-btn i {
  margin-right: 0.5rem;
  position: relative;
  z-index: 1;
}

.os-btn .icon-right {
  margin-right: 0;
  margin-left: 0.5rem;
}

.os-btn-icon i {
  margin: 0;
}

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

.os-btn-primary:hover {
  color: var(--color-white);
  background: var(--color-primary);
  border-color: var(--color-primary-active);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.os-btn-primary:focus,
.os-btn-primary.focus {
  box-shadow: var(--btn-box-shadow-focus) rgba(0, 123, 255, 0.5);
}

.os-btn-primary:active,
.os-btn-primary.active {
  color: var(--color-white);
  background: var(--color-primary-active);
  border-color: var(--color-primary-border);
}

/* Secondary Button */
.os-btn-secondary {
  color: var(--color-white);
  background: var(--color-secondary);
  border-color: var(--color-secondary);
}

.os-btn-secondary:hover {
  color: var(--color-white);
  background: var(--color-secondary);
  border-color: var(--color-secondary-active);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.os-btn-secondary:focus,
.os-btn-secondary.focus {
  box-shadow: var(--btn-box-shadow-focus) rgba(108, 117, 125, 0.5);
}

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

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

.os-btn-success:hover {
  color: var(--color-white);
  background: var(--color-success);
  border-color: var(--color-success-active);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.os-btn-success:focus,
.os-btn-success.focus {
  box-shadow: var(--btn-box-shadow-focus) rgba(40, 167, 69, 0.5);
}

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

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

.os-btn-danger:hover {
  color: var(--color-white);
  background: var(--color-danger);
  border-color: var(--color-danger-active);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.os-btn-danger:focus,
.os-btn-danger.focus {
  box-shadow: var(--btn-box-shadow-focus) rgba(220, 53, 69, 0.5);
}

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

/* Warning Button */
.os-btn-warning {
  color: var(--color-warning-text);
  background: var(--color-warning);
  border-color: var(--color-warning);
}

.os-btn-warning:hover {
  color: var(--color-warning-text);
  background: var(--color-warning);
  border-color: var(--color-warning-active);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.os-btn-warning:focus,
.os-btn-warning.focus {
  box-shadow: var(--btn-box-shadow-focus) rgba(255, 193, 7, 0.5);
}

.os-btn-warning:active,
.os-btn-warning.active {
  color: var(--color-warning-text);
  background: var(--color-warning-active);
  border-color: var(--color-warning-border);
}

/* Info Button */
.os-btn-info {
  color: var(--color-white);
  background: var(--color-info);
  border-color: var(--color-info);
}

.os-btn-info:hover {
  color: var(--color-white);
  background: var(--color-info);
  border-color: var(--color-info-active);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.os-btn-info:focus,
.os-btn-info.focus {
  box-shadow: var(--btn-box-shadow-focus) rgba(23, 162, 184, 0.5);
}

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

/* Light Button */
.os-btn-light {
  color: var(--color-light-text);
  background: var(--color-light);
  border-color: var(--color-light);
}

.os-btn-light:hover {
  color: var(--color-light-text);
  background: var(--color-light);
  border-color: var(--color-light-active);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.os-btn-light:focus,
.os-btn-light.focus {
  box-shadow: var(--btn-box-shadow-focus) rgba(248, 249, 250, 0.5);
}

.os-btn-light:active,
.os-btn-light.active {
  color: var(--color-light-text);
  background: var(--color-light-active);
  border-color: var(--color-light-border);
}

/* Dark Button */
.os-btn-dark {
  color: var(--color-white);
  background: var(--color-dark);
  border-color: var(--color-dark);
}

.os-btn-dark:hover {
  color: var(--color-white);
  background: var(--color-dark);
  border-color: var(--color-dark-active);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.os-btn-dark:focus,
.os-btn-dark.focus {
  box-shadow: var(--btn-box-shadow-focus) rgba(52, 58, 64, 0.5);
}

.os-btn-dark:active,
.os-btn-dark.active {
  color: var(--color-white);
  background: var(--color-dark-active);
  border-color: var(--color-dark-border);
}

/* Outline Buttons */
.os-btn-outline-primary {
  color: var(--color-primary);
  background-color: transparent;
  background-image: none;
  border-color: var(--color-primary);
}

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

.os-btn-outline-secondary {
  color: var(--color-secondary);
  background-color: transparent;
  background-image: none;
  border-color: var(--color-secondary);
}

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

.os-btn-outline-success {
  color: var(--color-success);
  background-color: transparent;
  background-image: none;
  border-color: var(--color-success);
}

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

.os-btn-outline-danger {
  color: var(--color-danger);
  background-color: transparent;
  background-image: none;
  border-color: var(--color-danger);
}

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

.os-btn-outline-warning {
  color: var(--color-warning);
  background-color: transparent;
  background-image: none;
  border-color: var(--color-warning);
}

.os-btn-outline-warning:hover {
  color: var(--color-warning-text);
  background: var(--color-warning);
  border-color: var(--color-warning);
}

.os-btn-outline-info {
  color: var(--color-info);
  background-color: transparent;
  background-image: none;
  border-color: var(--color-info);
}

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

.os-btn-outline-light {
  color: var(--color-light);
  background-color: transparent;
  background-image: none;
  border-color: var(--color-light);
}

.os-btn-outline-light:hover {
  color: var(--color-light-text);
  background: var(--color-light);
  border-color: var(--color-light);
}

.os-btn-outline-dark {
  color: var(--color-dark);
  background-color: transparent;
  background-image: none;
  border-color: var(--color-dark);
}

.os-btn-outline-dark:hover {
  color: var(--color-white);
  background: var(--color-dark);
  border-color: var(--color-dark);
}

/* Ghost Buttons */
.os-btn-ghost {
  background: rgba(0, 0, 0, 0.05);
  color: inherit;
  border-color: transparent;
  box-shadow: none;
}

.os-btn-ghost:hover {
  background: rgba(0, 0, 0, 0.1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Button Groups */
.os-btn-group {
  position: relative;
  display: inline-flex;
  vertical-align: middle;
}

.os-btn-group > .os-btn {
  position: relative;
  flex: 1 1 auto;
}

.os-btn-group > .os-btn:hover {
  z-index: 1;
}

.os-btn-group > .os-btn:focus,
.os-btn-group > .os-btn:active,
.os-btn-group > .os-btn.active {
  z-index: 1;
}

.os-btn-group .os-btn + .os-btn,
.os-btn-group .os-btn + .os-btn-group,
.os-btn-group .os-btn-group + .os-btn,
.os-btn-group .os-btn-group + .os-btn-group {
  margin-left: -1px;
}

.os-btn-group > .os-btn:not(:last-child):not(.dropdown-toggle) {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.os-btn-group > .os-btn:not(:first-child) {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

/* Loading/Spinner State */
.os-btn-loading {
  position: relative;
  pointer-events: none;
}

.os-btn-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: os-btn-spin 1s linear infinite;
}

@keyframes os-btn-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Product Carousel */
.product-carousel-section .os-btn {
  transition: var(--btn-transition);
}

.product-carousel-section .os-btn:hover {
  color: var(--color-white);
  background: var(--color-primary);
  border-color: var(--color-primary-active);
}

.product-carousel-section .os-btn:focus,
.product-carousel-section .os-btn:active {
  box-shadow: 0 0 0 0.2rem rgba(var(--color-primary-rgb), 0.25);
}

.product-carousel-section .os-btn:active {
  background: var(--color-primary-active);
  border-color: var(--color-primary-border);
}

/* Footer Buttons */
.footer-btn {
  color: var(--color-white);
  border: 1px solid var(--color-white);
}
