/* 
===========================================================================
Modern Button System - Based on User's Design
===========================================================================
Comprehensive button styles matching the provided button design system
*/

/* ===== BASE BUTTON RESET ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-weight: 500;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  text-decoration: none;
  transition: all 0.2s ease-in-out;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  box-sizing: border-box;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

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

/* ===== BUTTON SIZES ===== */

/* Small Buttons */
.btn-sm {
  padding: 6px 12px;
  font-size: 14px;
  line-height: 1.4;
  border-radius: 6px;
  min-height: 32px;
}

.btn-sm.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  min-width: 32px;
}

/* Medium Buttons (Default) */
.btn-md,
.btn {
  padding: 10px 16px;
  font-size: 16px;
  line-height: 1.5;
  border-radius: 8px;
  min-height: 40px;
}

.btn-md.btn-icon,
.btn.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  min-width: 40px;
}

/* Large Buttons */
.btn-lg {
  padding: 12px 20px;
  font-size: 18px;
  line-height: 1.6;
  border-radius: 10px;
  min-height: 48px;
}

.btn-lg.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  min-width: 48px;
}

/* ===== PRIMARY BUTTONS (Orange) ===== */

.btn-primary {
  background-color: var(--color-btn-primary-bg);
  border-color: var(--color-btn-primary-bg);
  color: var(--color-btn-primary-text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-btn-primary-hover);
  border-color: var(--color-btn-primary-hover);
  color: var(--color-btn-primary-text);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(231, 91, 48, 0.25);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(231, 91, 48, 0.2);
}

.btn-primary:focus {
  box-shadow: 0 0 0 3px rgba(231, 91, 48, 0.3);
}

/* ===== SECONDARY BUTTONS (Blue) ===== */

.btn-secondary {
  background-color: var(--color-btn-secondary-bg);
  border-color: var(--color-btn-secondary-bg);
  color: var(--color-btn-secondary-text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-btn-secondary-hover);
  border-color: var(--color-btn-secondary-hover);
  color: var(--color-btn-secondary-text);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(31, 58, 132, 0.25);
}

.btn-secondary:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(31, 58, 132, 0.2);
}

.btn-secondary:focus {
  box-shadow: 0 0 0 3px rgba(31, 58, 132, 0.3);
}

/* ===== OUTLINE BUTTONS ===== */

/* Primary Outline (Orange) */
.btn-outline-primary {
  background-color: transparent;
  border-color: var(--color-btn-outline-border);
  color: var(--color-btn-outline-text);
}

.btn-outline-primary:hover:not(:disabled) {
  background-color: var(--color-btn-outline-hover-bg);
  border-color: var(--color-btn-outline-hover-bg);
  color: var(--color-btn-outline-hover-text);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(231, 91, 48, 0.15);
}

.btn-outline-primary:focus {
  box-shadow: 0 0 0 3px rgba(231, 91, 48, 0.2);
}

/* Secondary Outline (Blue) */
.btn-outline-secondary {
  background-color: transparent;
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.btn-outline-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(31, 58, 132, 0.15);
}

.btn-outline-secondary:focus {
  box-shadow: 0 0 0 3px rgba(31, 58, 132, 0.2);
}

/* ===== GHOST BUTTONS ===== */

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

.btn-ghost-primary:hover:not(:disabled) {
  background-color: rgba(231, 91, 48, 0.1);
  color: var(--color-primary-hover);
}

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

.btn-ghost-secondary:hover:not(:disabled) {
  background-color: rgba(31, 58, 132, 0.1);
  color: var(--color-secondary-hover);
}

/* ===== SUCCESS/ERROR BUTTONS ===== */

.btn-success {
  background-color: var(--color-success);
  border-color: var(--color-success);
  color: #FFFFFF;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-success:hover:not(:disabled) {
  background-color: var(--color-success-hover);
  border-color: var(--color-success-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(16, 185, 129, 0.25);
}

.btn-danger {
  background-color: var(--color-error);
  border-color: var(--color-error);
  color: #FFFFFF;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--color-error-hover);
  border-color: var(--color-error-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(239, 68, 68, 0.25);
}

/* ===== LIGHT/SUBTLE VARIANTS ===== */

.btn-light-primary {
  background-color: rgba(231, 91, 48, 0.1);
  border-color: transparent;
  color: var(--color-primary);
}

.btn-light-primary:hover:not(:disabled) {
  background-color: rgba(231, 91, 48, 0.15);
  color: var(--color-primary-hover);
}

.btn-light-secondary {
  background-color: rgba(31, 58, 132, 0.1);
  border-color: transparent;
  color: var(--color-secondary);
}

.btn-light-secondary:hover:not(:disabled) {
  background-color: rgba(31, 58, 132, 0.15);
  color: var(--color-secondary-hover);
}

/* ===== BUTTON STATES ===== */

.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: btn-loading-spin 0.8s linear infinite;
}

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

/* ===== BUTTON GROUPS ===== */

.btn-group {
  position: relative;
  display: inline-flex;
  vertical-align: middle;
}

.btn-group > .btn {
  position: relative;
  flex: 1 1 auto;
  margin-left: -1px;
}

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

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

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

.btn-group > .btn:focus {
  z-index: 2;
}

/* ===== FULL WIDTH BUTTONS ===== */

.btn-block {
  display: flex;
  width: 100%;
}

/* ===== ICON BUTTONS ===== */

.btn-icon {
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon i,
.btn-icon svg {
  font-size: 1em;
  line-height: 1;
}

/* ===== FLOATING ACTION BUTTON ===== */

.btn-fab {
  border-radius: 50%;
  width: 56px;
  height: 56px;
  padding: 0;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
}

.btn-fab:hover:not(:disabled) {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */

@media (max-width: 768px) {
  .btn-lg {
    padding: 10px 16px;
    font-size: 16px;
    min-height: 44px;
  }
  
  .btn-md,
  .btn {
    padding: 8px 14px;
    font-size: 14px;
    min-height: 40px;
  }
  
  .btn-sm {
    padding: 6px 10px;
    font-size: 13px;
    min-height: 36px;
  }
  
  .btn-fab {
    width: 48px;
    height: 48px;
    bottom: 16px;
    right: 16px;
  }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */

@media (prefers-reduced-motion: reduce) {
  .btn {
    transition: none;
  }
  
  .btn:hover {
    transform: none;
  }
  
  .btn-loading::after {
    animation: none;
  }
}

/* ===== HIGH CONTRAST MODE ===== */

@media (prefers-contrast: high) {
  .btn {
    border-width: 2px;
  }
  
  .btn-outline-primary,
  .btn-outline-secondary {
    border-width: 2px;
  }
}

/* ===== FOCUS VISIBLE (for keyboard navigation) ===== */

.btn:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
}

/* ===== ADDITIONAL UTILITY CLASSES ===== */

/* Extract and Push Button Specific Styling */
.btn-extract {
  /* Will inherit from .btn-success or .btn-extract-enabled classes */
}

.btn-extract-enabled {
  /* Force success styling */
  background-color: var(--color-success) !important;
  border-color: var(--color-success) !important;
  color: #FFFFFF !important;
}

.btn-extract-enabled:hover:not(:disabled) {
  background-color: var(--color-success-hover) !important;
  border-color: var(--color-success-hover) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(16, 185, 129, 0.25);
}

.btn-push {
  /* Will inherit from .btn-success styling */
}

/* Close Button Variants */
.btn-close-white {
  filter: invert(1) grayscale(100%) brightness(200%);
}

/* Loading State for Specific Buttons */
.btn-extract.btn-loading,
.btn-push.btn-loading {
  color: transparent !important;
}

.btn-extract.btn-loading::after,
.btn-push.btn-loading::after {
  border-color: currentColor;
  border-right-color: transparent;
}

/* Responsive Button Text */
@media (max-width: 576px) {
  .btn-responsive-text .btn-text {
    display: none;
  }
  
  .btn-responsive-text .btn-icon-only {
    display: inline-block;
  }
}

@media (min-width: 577px) {
  .btn-responsive-text .btn-text {
    display: inline-block;
  }
  
  .btn-responsive-text .btn-icon-only {
    display: none;
  }
}

/* Button with Badge */
.btn-with-badge {
  position: relative;
}

.btn-with-badge .badge {
  position: absolute;
  top: -8px;
  right: -8px;
  min-width: 20px;
  height: 20px;
  border-radius: 10px;
  background-color: var(--color-error);
  color: white;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid white;
}