/*
 * UX Enhancements - Critical Improvements
 * Fixes: Touch targets, focus states, safe areas, loading states
 */

/* ========================================
   IMPROVED TOUCH TARGETS (WCAG AAA 44x44px)
   ======================================== */

/* Mobile button sizing - WCAG AAA compliance */
@media (max-width: 768px) {
  .btn,
  button,
  [type='submit'],
  [type='button'],
  [type='reset'],
  .button {
    min-height: 48px;
    min-width: 48px;
    padding: 1.25rem 1.75rem;
  }

  .btn--sm {
    min-height: 44px;
    padding: 1rem 1.5rem;
  }

  /* Ensure CTA buttons are tappable */
  .sticky-cta__btn {
    min-height: 48px;
    padding: 1rem 1.5rem;
  }

  /* Mobile nav items */
  .mobile-nav__link,
  .mobile-nav-link {
    min-height: 48px;
    padding: 1rem 1.5rem;
  }

  /* Form inputs */
  input[type='text'],
  input[type='email'],
  input[type='tel'],
  input[type='url'],
  input[type='search'],
  select,
  textarea {
    min-height: 48px;
    padding: 0.875rem 1rem;
    font-size: 16px; /* Prevents iOS zoom on focus */
  }
}

/* ========================================
   SAFE AREA INSETS (iPhone Notch/Home Indicator)
   ======================================== */

/* Sticky CTA safe area */
.sticky-cta {
  padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
}

/* Mobile nav safe area */
.mobile-nav,
.mobile-nav-drawer {
  padding-bottom: env(safe-area-inset-bottom, 0);
}

/* Bottom-fixed elements */
.fixed-bottom,
[class*='sticky-bottom'],
[class*='fixed-bottom'] {
  padding-bottom: env(safe-area-inset-bottom, 0);
}

/* Viewport safe areas */
@supports (padding: env(safe-area-inset-bottom)) {
  body {
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }
}

/* ========================================
   GLOBAL FOCUS INDICATORS (Keyboard Navigation)
   ======================================== */

/* Remove default outlines */
*:focus {
  outline: none;
}

/* Modern focus-visible styles (keyboard only) */
*:focus-visible {
  outline: 3px solid var(--color-primary-500, #0ea5e9);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Specific element focus styles */
a:focus-visible {
  outline-color: var(--color-primary-600, #1e40af);
  outline-offset: 2px;
}

button:focus-visible,
[type='submit']:focus-visible,
[type='button']:focus-visible {
  outline-color: var(--color-accent-500, #f59e0b);
  outline-width: 4px;
  outline-offset: 2px;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline-color: var(--color-primary-500, #0ea5e9);
  outline-width: 3px;
  outline-offset: 1px;
}

/* Skip link enhancement */
.skip-link:focus-visible {
  outline: 4px solid #ffffff;
  outline-offset: 4px;
  box-shadow: 0 0 20px rgb(0 0 0 / 50%);
}

/* ========================================
   LOADING STATES
   ======================================== */

/* Button loading state */
.btn--loading,
.button--loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
  cursor: wait;
}

.btn--loading::after,
.button--loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 3px solid rgb(255 255 255 / 30%);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spinner 0.6s linear infinite;
}

@keyframes spinner {
  to {
    transform: rotate(360deg);
  }
}

/* Form loading overlay */
.form--loading {
  position: relative;
  pointer-events: none;
  opacity: 60%;
}

.form--loading::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgb(255 255 255 / 90%);
  z-index: 10;
  border-radius: var(--radius-lg, 8px);
}

.form--loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  margin: -20px 0 0 -20px;
  border: 4px solid var(--color-neutral-300, #d1d5db);
  border-top-color: var(--color-primary-500, #0ea5e9);
  border-radius: 50%;
  animation: spinner 0.8s linear infinite;
  z-index: 11;
}

/* ========================================
   ERROR VISIBILITY
   ======================================== */

/* Form error summary - ALWAYS visible when errors exist */
.error-summary {
  display: none;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  background: #fef2f2;
  border: 2px solid #dc2626;
  border-left-width: 6px;
  border-radius: var(--radius-md, 6px);
  color: #991b1b;
  font-weight: 600;
}

.error-summary.visible,
.error-summary[aria-hidden='false'] {
  display: block;
  animation: shake 0.4s ease-in-out;
}

.error-summary__icon {
  display: inline-block;
  margin-right: 0.5rem;
  font-size: 1.25rem;
  vertical-align: middle;
}

.error-summary__title {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.error-list {
  margin: 0.75rem 0 0;
  padding-left: 1.5rem;
  list-style-type: disc;
}

.error-list li {
  margin-bottom: 0.5rem;
}

.error-list a {
  color: #dc2626;
  text-decoration: underline;
}

.error-list a:hover {
  color: #991b1b;
}

/* Individual field errors - more prominent */
.error-message,
.field-error {
  display: block;
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: #fee2e2;
  border-left: 3px solid #dc2626;
  color: #991b1b;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 4px;
}

.error-message::before,
.field-error::before {
  content: '⚠ ';
  margin-right: 0.25rem;
}

/* Input error state */
input.error,
textarea.error,
select.error,
input:invalid,
textarea:invalid,
select:invalid {
  border-color: #dc2626;
  border-width: 2px;
  background-color: #fef2f2;
}

input.error:focus,
textarea.error:focus,
select.error:focus {
  border-color: #991b1b;
  box-shadow: 0 0 0 3px rgb(220 38 38 / 10%);
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }

  10%,
  30%,
  50%,
  70%,
  90% {
    transform: translateX(-10px);
  }

  20%,
  40%,
  60%,
  80% {
    transform: translateX(10px);
  }
}

/* ========================================
   SUCCESS STATES
   ======================================== */

/* Success toast */
.toast--success {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: #ecfdf5;
  border: 2px solid #10b981;
  border-left-width: 6px;
  border-radius: var(--radius-md, 6px);
  color: #065f46;
  font-weight: 600;
  box-shadow: 0 10px 40px rgb(16 185 129 / 20%);
  animation: slide-in-right 0.3s ease-out;
}

.toast--success::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: #10b981;
  color: #ffffff;
  border-radius: 50%;
  font-size: 1.125rem;
  font-weight: 900;
  flex-shrink: 0;
}

@keyframes slide-in-right {
  from {
    opacity: 0%;
    transform: translateX(100%);
  }

  to {
    opacity: 100%;
    transform: translateX(0);
  }
}

/* ========================================
   BACK TO TOP BUTTON
   ======================================== */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 52px;
  height: 52px;
  background: linear-gradient(
    135deg,
    var(--color-primary-500, #0ea5e9),
    var(--color-primary-700, #0369a1)
  );
  color: #ffffff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0%;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  box-shadow: 0 6px 20px rgb(14 165 233 / 40%);
  z-index: 998;
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.back-to-top.visible {
  opacity: 100%;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: linear-gradient(
    135deg,
    var(--color-primary-600, #0284c7),
    var(--color-primary-800, #075985)
  );
  box-shadow: 0 8px 30px rgb(14 165 233 / 60%);
  transform: translateY(-4px);
}

.back-to-top:active {
  transform: translateY(-2px);
}

.back-to-top::before {
  content: '↑';
  font-size: 1.75rem;
  font-weight: 900;
  line-height: 1;
}

/* Mobile positioning */
@media (max-width: 768px) {
  .back-to-top {
    width: 48px;
    height: 48px;
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    right: 1rem;
  }

  .back-to-top::before {
    font-size: 1.5rem;
  }

  /* Adjust if sticky CTA is visible */
  .sticky-cta.visible ~ .back-to-top {
    bottom: calc(5rem + env(safe-area-inset-bottom, 0px));
  }
}

/* ========================================
   SKELETON SCREENS
   ======================================== */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-neutral-200, #e5e7eb) 0%,
    var(--color-neutral-100, #f3f4f6) 50%,
    var(--color-neutral-200, #e5e7eb) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-md, 6px);
}

.skeleton--text {
  height: 1rem;
  margin-bottom: 0.5rem;
  border-radius: 4px;
}

.skeleton--title {
  height: 2rem;
  margin-bottom: 1rem;
  width: 60%;
}

.skeleton--button {
  height: 48px;
  width: 120px;
}

.skeleton--card {
  height: 300px;
  border-radius: var(--radius-lg, 8px);
}

.skeleton--circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

/* ========================================
   REDUCED MOTION SUPPORT
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  .btn--loading::after,
  .form--loading::after,
  .skeleton {
    animation: none;
  }

  .back-to-top {
    transition: opacity 0.1s;
  }

  .toast--success {
    animation: none;
  }

  .error-summary.visible {
    animation: none;
  }
}

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

@media (prefers-contrast: more) {
  *:focus-visible {
    outline-width: 4px;
    outline-offset: 4px;
  }

  .error-summary,
  .error-message,
  .field-error {
    border-width: 3px;
  }

  input.error,
  textarea.error,
  select.error {
    border-width: 3px;
  }
}

/* ============================================================
   MERGED FROM: ui-polish.css
   Global interaction quality: focus rings, selection, scrolling
   ============================================================ */

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* Text Selection */
::selection {
  background: rgb(0 163 92 / 25%);
  color: inherit;
}

/* Global Focus Ring Standard */
:focus-visible {
  outline: 2px solid var(--primary-400, #00c46c);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgb(0 163 92 / 20%);
  border-radius: 4px;
}

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

/* Nav-specific focus rings */
.ts-nav__link:focus-visible,
.ts-nav__trigger:focus-visible,
.ts-nav-toggle:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 3px;
  box-shadow:
    0 0 0 2px rgb(0 0 0 / 20%),
    0 0 0 5px rgb(255 255 255 / 50%);
  border-radius: var(--radius-md, 8px);
}

.ts-drawer__link:focus-visible,
.ts-drawer__accordion-trigger:focus-visible,
.ts-drawer__close:focus-visible {
  outline: 2px solid var(--primary-500, #00a35c);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgb(0 163 92 / 20%);
  border-radius: var(--radius-sm, 6px);
}

.ts-nav__dropdown a:focus-visible {
  outline: 2px solid var(--primary-500, #00a35c);
  outline-offset: -2px;
  box-shadow: none;
  background: var(--primary-50, #f0fdf8);
  color: var(--primary-700, #00703e);
}

.ts-header .btn:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgb(255 255 255 / 30%);
}

/* Smooth Scrollbar on Overflow Containers */
.ts-drawer,
.ts-nav__dropdown {
  scrollbar-width: thin;
  scrollbar-color: rgb(0 163 92 / 40%) transparent;
}

.ts-drawer::-webkit-scrollbar {
  width: 4px;
}

.ts-drawer::-webkit-scrollbar-track {
  background: transparent;
}

.ts-drawer::-webkit-scrollbar-thumb {
  background: rgb(0 163 92 / 40%);
  border-radius: 4px;
}

/* Header Action Buttons */
.ts-header__actions {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 0.75vw, 0.75rem);
  flex-shrink: 0;
}

.ts-header__actions .btn--ghost {
  border-color: rgb(255 255 255 / 55%);
  font-size: clamp(0.8125rem, 0.85vw, 0.875rem);
  padding: 0.4375rem 1rem;
}

.ts-header__actions .btn--primary {
  font-size: clamp(0.8125rem, 0.85vw, 0.875rem);
  padding: 0.4375rem 1rem;
  box-shadow: 0 2px 10px rgb(0 163 92 / 35%);
}

.ts-header__actions .btn--primary:hover {
  box-shadow: 0 4px 18px rgb(0 163 92 / 45%);
}

/* Nav Dropdown Item Focus Ring (inset) */
.ts-nav__dropdown a:focus-visible {
  outline-offset: -2px;
}

/* CTA Button Nav Item Lift */
.ts-nav__item--cta .ts-nav__link:active {
  transform: translateY(0) scale(0.97);
  transition-duration: 0.08s;
}

/* Accordion Trigger Chevron */
.ts-drawer__chevron {
  flex-shrink: 0;
  transition: transform 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  margin-left: auto;
}

.ts-drawer__accordion-trigger[aria-expanded='true'] .ts-drawer__chevron {
  transform: rotate(180deg);
}

/* Drawer Close Button */
.ts-drawer__close {
  transition:
    background-color 0.2s ease,
    transform 0.2s ease,
    color 0.2s ease;
}

.ts-drawer__close:hover {
  transform: rotate(90deg);
}

.ts-drawer__close:active {
  transform: rotate(90deg) scale(0.9);
  transition-duration: 0.08s;
}

/* Placeholder Color */
input::placeholder,
textarea::placeholder {
  color: rgb(107 114 128 / 80%);
  transition: color 0.2s ease;
}

input:focus::placeholder,
textarea:focus::placeholder {
  color: rgb(107 114 128 / 45%);
}

/* Link Default Transitions */
a {
  transition: color 0.18s ease;
}

/* Reduced Motion Overrides */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .ts-drawer__close:hover {
    transform: none;
  }
}

/* Print: hide nav chrome */
@media print {
  .ts-header,
  .ts-drawer,
  .ts-nav-toggle {
    display: none !important;
  }
}