/* Interactive Elements Standardization for Tutor One */

/* ===== FOCUS MANAGEMENT ===== */
*:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* ===== BUTTON INTERACTIONS ===== */
.btn {
  position: relative;
  overflow: hidden;
  transform: translateY(0);
  transition: all var(--transition-base);
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
  transition-duration: 75ms;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Button ripple effect */
.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 0.3s, height 0.3s;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

/* ===== LINK INTERACTIONS ===== */
a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: color var(--transition-base);
  position: relative;
}

a:hover {
  color: var(--color-primary-700);
}

a:focus {
  color: var(--color-primary-700);
}

/* Animated underline for text links */
a:not(.btn):not(.card) {
  position: relative;
}

a:not(.btn):not(.card)::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary-600);
  transition: width var(--transition-base);
}

a:not(.btn):not(.card):hover::after,
a:not(.btn):not(.card):focus::after {
  width: 100%;
}

/* ===== FORM ELEMENT INTERACTIONS ===== */
.form-input {
  transition: all var(--transition-base);
  position: relative;
  color: #111827 !important; /* สีดำชัดเจนสำหรับข้อความที่กรอก */
}

.form-input:hover:not(:disabled) {
  border-color: var(--color-neutral-400);
}

.form-input:focus {
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
  transform: translateY(-1px);
}

.form-input:disabled {
  background-color: var(--color-neutral-100);
  color: var(--color-neutral-500);
  cursor: not-allowed;
}

/* Floating label animation */
.form-group {
  position: relative;
}

.form-input:placeholder-shown + .form-label-floating {
  transform: translateY(0.75rem) scale(1);
  color: var(--color-neutral-400);
}

.form-input:focus + .form-label-floating,
.form-input:not(:placeholder-shown) + .form-label-floating {
  transform: translateY(-0.5rem) scale(0.875);
  color: var(--color-primary-600);
}

.form-label-floating {
  position: absolute;
  top: 0;
  left: var(--spacing-4);
  background: white;
  padding: 0 var(--spacing-1);
  transition: all var(--transition-base);
  pointer-events: none;
  transform-origin: left top;
}

/* ===== CARD INTERACTIONS ===== */
.card {
  transition: all var(--transition-base);
  cursor: default;
}

.card.interactive {
  cursor: pointer;
}

.card.interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-200);
}

.card.interactive:active {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ===== CHECKBOX AND RADIO INTERACTIONS ===== */
.form-checkbox,
.form-radio {
  appearance: none;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--color-neutral-300);
  background: white;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.form-checkbox {
  border-radius: var(--radius-base);
}

.form-radio {
  border-radius: var(--radius-full);
}

.form-checkbox:hover,
.form-radio:hover {
  border-color: var(--color-primary-500);
}

.form-checkbox:checked,
.form-radio:checked {
  background-color: var(--color-primary-600);
  border-color: var(--color-primary-600);
}

.form-checkbox:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 0.875rem;
  font-weight: bold;
}

.form-radio:checked::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0.5rem;
  height: 0.5rem;
  background: white;
  border-radius: var(--radius-full);
}

/* ===== TOGGLE SWITCH ===== */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 3rem;
  height: 1.5rem;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-neutral-300);
  transition: var(--transition-base);
  border-radius: var(--radius-full);
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 1.125rem;
  width: 1.125rem;
  left: 0.1875rem;
  bottom: 0.1875rem;
  background-color: white;
  transition: var(--transition-base);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
}

input:checked + .toggle-slider {
  background-color: var(--color-primary-600);
}

input:checked + .toggle-slider:before {
  transform: translateX(1.5rem);
}

.toggle-slider:hover {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* ===== DROPDOWN INTERACTIONS ===== */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-toggle {
  cursor: pointer;
  user-select: none;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: var(--z-dropdown);
  min-width: 10rem;
  background: white;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.5rem);
  transition: all var(--transition-base);
}

.dropdown.active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--color-neutral-700);
  text-decoration: none;
  transition: all var(--transition-base);
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: var(--color-primary-50);
  color: var(--color-primary-700);
}

.dropdown-item:first-child {
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
}

.dropdown-item:last-child {
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

/* ===== TOOLTIP INTERACTIONS ===== */
.tooltip {
  position: relative;
  cursor: help;
}

.tooltip::before,
.tooltip::after {
  position: absolute;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  pointer-events: none;
}

.tooltip::before {
  content: attr(data-tooltip);
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-0.5rem);
  background: var(--color-neutral-800);
  color: white;
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  z-index: var(--z-tooltip);
}

.tooltip::after {
  content: '';
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 0.25rem solid transparent;
  border-top-color: var(--color-neutral-800);
}

.tooltip:hover::before,
.tooltip:hover::after,
.tooltip:focus::before,
.tooltip:focus::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ===== LOADING STATES ===== */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1rem;
  height: 1rem;
  margin: -0.5rem 0 0 -0.5rem;
  border: 2px solid var(--color-neutral-200);
  border-top-color: var(--color-primary-600);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

/* ===== MICRO-ANIMATIONS ===== */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translate3d(0, 0, 0);
  }
  40%, 43% {
    transform: translate3d(0, -30px, 0);
  }
  70% {
    transform: translate3d(0, -15px, 0);
  }
  90% {
    transform: translate3d(0, -4px, 0);
  }
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-10px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(10px);
  }
}

/* Animation utility classes */
.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-bounce {
  animation: bounce 1s infinite;
}

.animate-shake {
  animation: shake 0.82s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

/* ===== ACCESSIBILITY ENHANCEMENTS ===== */
.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:focus {
  position: static;
  width: auto;
  height: auto;
  padding: var(--spacing-2) var(--spacing-3);
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
  background: var(--color-primary-600);
  color: white;
  border-radius: var(--radius-base);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn {
    border-width: 2px;
  }
  
  .form-input {
    border-width: 2px;
  }
  
  .card {
    border-width: 2px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .btn:hover {
    transform: none;
  }
  
  .card.interactive:hover {
    transform: none;
  }
}

/* ===== DARK MODE SUPPORT (FUTURE) ===== */
@media (prefers-color-scheme: dark) {
  /* Dark mode variables can be added here in the future */
}

/* ===== PRINT OPTIMIZATIONS ===== */
@media print {
  .btn {
    border: 1px solid #000 !important;
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    transform: none !important;
  }
  
  .card {
    border: 1px solid #000 !important;
    box-shadow: none !important;
    transform: none !important;
  }
  
  .dropdown-menu {
    position: static !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    box-shadow: none !important;
    border: 1px solid #000 !important;
  }
}