/* 
==================================================
UNIFIED BUTTON SYSTEM FOR SOCIAL MEDIA AUTOMATION
==================================================
This file provides a consistent button design system
across the entire application.
*/

/* CSS Custom Properties for Button System */
:root {
  /* Primary Brand Colors */
  --btn-primary-bg: #1877f2;
  --btn-primary-hover: #166fe5;
  --btn-primary-active: #0d53c7;
  --btn-primary-text: #ffffff;
  
  /* Success Colors */
  --btn-success-bg: #28a745;
  --btn-success-hover: #218838;
  --btn-success-active: #1e7e34;
  --btn-success-text: #ffffff;
  
  /* Danger Colors */
  --btn-danger-bg: #dc3545;
  --btn-danger-hover: #c82333;
  --btn-danger-active: #bd2130;
  --btn-danger-text: #ffffff;
  
  /* Warning Colors */
  --btn-warning-bg: #ffc107;
  --btn-warning-hover: #e0a800;
  --btn-warning-active: #d39e00;
  --btn-warning-text: #212529;
  
  /* Secondary Colors */
  --btn-secondary-bg: #6c757d;
  --btn-secondary-hover: #5a6268;
  --btn-secondary-active: #545b62;
  --btn-secondary-text: #ffffff;
  
  /* Info Colors */
  --btn-info-bg: #17a2b8;
  --btn-info-hover: #138496;
  --btn-info-active: #117a8b;
  --btn-info-text: #ffffff;
  
  /* Light/Outline Colors */
  --btn-light-bg: #f8f9fa;
  --btn-light-hover: #e2e6ea;
  --btn-light-active: #dae0e5;
  --btn-light-text: #212529;
  --btn-light-border: #dee2e6;
  
  /* Dark Colors */
  --btn-dark-bg: #343a40;
  --btn-dark-hover: #23272b;
  --btn-dark-active: #1d2124;
  --btn-dark-text: #ffffff;
  
  /* Neutral/Disabled Colors */
  --btn-disabled-bg: #e9ecef;
  --btn-disabled-text: #6c757d;
  --btn-disabled-border: #dee2e6;
  
  /* Button Dimensions */
  --btn-padding-y: 0.5rem;
  --btn-padding-x: 1rem;
  --btn-padding-y-sm: 0.25rem;
  --btn-padding-x-sm: 0.5rem;
  --btn-padding-y-lg: 0.75rem;
  --btn-padding-x-lg: 1.5rem;
  
  /* Border Radius */
  --btn-border-radius: 0.375rem;
  --btn-border-radius-sm: 0.25rem;
  --btn-border-radius-lg: 0.5rem;
  
  /* Typography */
  --btn-font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --btn-font-size: 1rem;
  --btn-font-size-sm: 0.875rem;
  --btn-font-size-lg: 1.125rem;
  --btn-font-weight: 500;
  --btn-line-height: 1.5;
  
  /* Transitions */
  --btn-transition: all 0.2s ease-in-out;
  
  /* Box Shadow */
  --btn-box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  --btn-box-shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.15);
  --btn-box-shadow-active: inset 0 2px 4px rgba(0, 0, 0, 0.2);
  
  /* Focus Ring */
  --btn-focus-ring: 0 0 0 0.2rem rgba(24, 119, 242, 0.25);
}

/* Base Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--btn-font-family);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  line-height: var(--btn-line-height);
  padding: var(--btn-padding-y) var(--btn-padding-x);
  border: 1px solid transparent;
  border-radius: var(--btn-border-radius);
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  transition: var(--btn-transition);
  box-shadow: var(--btn-box-shadow);
  position: relative;
  overflow: hidden;
}

.btn:focus {
  outline: none;
  box-shadow: var(--btn-focus-ring);
}

.btn:disabled,
.btn.disabled {
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: none;
  background-color: var(--btn-disabled-bg) !important;
  color: var(--btn-disabled-text) !important;
  border-color: var(--btn-disabled-border) !important;
}

/* Button Variants */

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--btn-primary-hover);
  border-color: var(--btn-primary-hover);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  background-color: var(--btn-primary-active);
  border-color: var(--btn-primary-active);
  box-shadow: var(--btn-box-shadow-active);
  transform: translateY(0);
}

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

.btn-success:hover:not(:disabled) {
  background-color: var(--btn-success-hover);
  border-color: var(--btn-success-hover);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

.btn-success:active:not(:disabled) {
  background-color: var(--btn-success-active);
  border-color: var(--btn-success-active);
  box-shadow: var(--btn-box-shadow-active);
  transform: translateY(0);
}

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

.btn-danger:hover:not(:disabled) {
  background-color: var(--btn-danger-hover);
  border-color: var(--btn-danger-hover);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

.btn-danger:active:not(:disabled) {
  background-color: var(--btn-danger-active);
  border-color: var(--btn-danger-active);
  box-shadow: var(--btn-box-shadow-active);
  transform: translateY(0);
}

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

.btn-warning:hover:not(:disabled) {
  background-color: var(--btn-warning-hover);
  border-color: var(--btn-warning-hover);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

.btn-warning:active:not(:disabled) {
  background-color: var(--btn-warning-active);
  border-color: var(--btn-warning-active);
  box-shadow: var(--btn-box-shadow-active);
  transform: translateY(0);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--btn-secondary-hover);
  border-color: var(--btn-secondary-hover);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

.btn-secondary:active:not(:disabled) {
  background-color: var(--btn-secondary-active);
  border-color: var(--btn-secondary-active);
  box-shadow: var(--btn-box-shadow-active);
  transform: translateY(0);
}

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

.btn-info:hover:not(:disabled) {
  background-color: var(--btn-info-hover);
  border-color: var(--btn-info-hover);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

.btn-info:active:not(:disabled) {
  background-color: var(--btn-info-active);
  border-color: var(--btn-info-active);
  box-shadow: var(--btn-box-shadow-active);
  transform: translateY(0);
}

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

.btn-light:hover:not(:disabled) {
  background-color: var(--btn-light-hover);
  border-color: var(--btn-light-border);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

.btn-light:active:not(:disabled) {
  background-color: var(--btn-light-active);
  border-color: var(--btn-light-border);
  box-shadow: var(--btn-box-shadow-active);
  transform: translateY(0);
}

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

.btn-dark:hover:not(:disabled) {
  background-color: var(--btn-dark-hover);
  border-color: var(--btn-dark-hover);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

.btn-dark:active:not(:disabled) {
  background-color: var(--btn-dark-active);
  border-color: var(--btn-dark-active);
  box-shadow: var(--btn-box-shadow-active);
  transform: translateY(0);
}

/* Outline Button Variants */

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

.btn-outline-primary:hover:not(:disabled) {
  background-color: var(--btn-primary-bg);
  border-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

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

.btn-outline-secondary:hover:not(:disabled) {
  background-color: var(--btn-secondary-bg);
  border-color: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

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

.btn-outline-success:hover:not(:disabled) {
  background-color: var(--btn-success-bg);
  border-color: var(--btn-success-bg);
  color: var(--btn-success-text);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

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

.btn-outline-danger:hover:not(:disabled) {
  background-color: var(--btn-danger-bg);
  border-color: var(--btn-danger-bg);
  color: var(--btn-danger-text);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

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

.btn-outline-warning:hover:not(:disabled) {
  background-color: var(--btn-warning-bg);
  border-color: var(--btn-warning-bg);
  color: var(--btn-warning-text);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

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

.btn-outline-info:hover:not(:disabled) {
  background-color: var(--btn-info-bg);
  border-color: var(--btn-info-bg);
  color: var(--btn-info-text);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

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

.btn-outline-light:hover:not(:disabled) {
  background-color: var(--btn-light-bg);
  border-color: var(--btn-light-border);
  color: var(--btn-light-text);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

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

.btn-outline-dark:hover:not(:disabled) {
  background-color: var(--btn-dark-bg);
  border-color: var(--btn-dark-bg);
  color: var(--btn-dark-text);
  box-shadow: var(--btn-box-shadow-hover);
  transform: translateY(-1px);
}

/* Button Sizes */

/* Small Buttons */
.btn-sm {
  font-size: var(--btn-font-size-sm);
  padding: var(--btn-padding-y-sm) var(--btn-padding-x-sm);
  border-radius: var(--btn-border-radius-sm);
}

/* Large Buttons */
.btn-lg {
  font-size: var(--btn-font-size-lg);
  padding: var(--btn-padding-y-lg) var(--btn-padding-x-lg);
  border-radius: var(--btn-border-radius-lg);
}

/* Block Buttons */
.btn-block {
  display: flex;
  width: 100%;
}

/* Icon Buttons */
.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon-sm {
  width: 2rem;
  height: 2rem;
  font-size: var(--btn-font-size-sm);
}

.btn-icon-lg {
  width: 3rem;
  height: 3rem;
  font-size: var(--btn-font-size-lg);
}

/* Icon + Text Buttons */
.btn .icon {
  margin-right: 0.5rem;
  font-size: 1em;
}

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

.btn .icon:only-child {
  margin: 0;
}

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

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1rem;
  height: 1rem;
  margin: -0.5rem 0 0 -0.5rem;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: btn-loading-spin 0.75s linear infinite;
}

.btn-loading .btn-text {
  opacity: 0;
}

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

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

.btn-group .btn {
  border-radius: 0;
  margin-right: -1px;
}

.btn-group .btn:first-child {
  border-top-left-radius: var(--btn-border-radius);
  border-bottom-left-radius: var(--btn-border-radius);
}

.btn-group .btn:last-child {
  border-top-right-radius: var(--btn-border-radius);
  border-bottom-right-radius: var(--btn-border-radius);
  margin-right: 0;
}

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

/* Button Toolbar */
.btn-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

/* Accessibility Improvements */

/* Screen Reader Only Content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sr-only-focusable:active,
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  padding: inherit;
  margin: inherit;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

@media (prefers-reduced-motion: reduce) {
  .btn {
    transition: none;
  }
  
  .btn:hover:not(:disabled) {
    transform: none;
  }
  
  .btn-loading::after {
    animation: none;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .btn {
    border-width: 2px;
  }
  
  .btn:focus {
    outline: 2px solid currentColor;
    outline-offset: 2px;
  }
}

/* Print Styles */
@media print {
  .btn {
    border: 1px solid #000;
    box-shadow: none;
  }
}

/* Legacy Button Class Overrides */
/* These ensure compatibility with existing button implementations */

button, 
.schedule-btn,
.button,
.minimalist-icon-btn {
  /* Reset any conflicting styles and apply unified system */
  font-family: var(--btn-font-family) !important;
  transition: var(--btn-transition) !important;
}

/* Override old custom button styles */
button:not(.btn),
.schedule-btn:not(.btn) {
  background-color: var(--btn-primary-bg) !important;
  color: var(--btn-primary-text) !important;
  border: 1px solid var(--btn-primary-bg) !important;
  border-radius: var(--btn-border-radius) !important;
  padding: var(--btn-padding-y) var(--btn-padding-x) !important;
  font-size: var(--btn-font-size) !important;
  font-weight: var(--btn-font-weight) !important;
  cursor: pointer !important;
  text-decoration: none !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  box-shadow: var(--btn-box-shadow) !important;
}

button:not(.btn):hover,
.schedule-btn:not(.btn):hover {
  background-color: var(--btn-primary-hover) !important;
  border-color: var(--btn-primary-hover) !important;
  box-shadow: var(--btn-box-shadow-hover) !important;
  transform: translateY(-1px) !important;
}

/* Standardize icon buttons */
.minimalist-icon-btn {
  width: 2.5rem !important;
  height: 2.5rem !important;
  padding: 0 !important;
  border-radius: 50% !important;
  background-color: transparent !important;
  border: 1px solid var(--btn-light-border) !important;
  color: var(--btn-secondary-bg) !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  transition: var(--btn-transition) !important;
}

.minimalist-icon-btn:hover {
  background-color: var(--btn-light-hover) !important;
  color: var(--btn-primary-bg) !important;
  border-color: var(--btn-primary-bg) !important;
  transform: translateY(-1px) !important;
  box-shadow: var(--btn-box-shadow-hover) !important;
}

/* Responsive Design */
@media (max-width: 768px) {
  .btn-responsive {
    width: 100%;
    margin-bottom: 0.5rem;
  }
  
  .btn-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .btn-group .btn {
    border-radius: var(--btn-border-radius);
    margin-right: 0;
    margin-bottom: -1px;
  }
  
  .btn-group .btn:last-child {
    margin-bottom: 0;
  }
}