/* ===========================
   🧩 Shared Components
   Reusable UI components across the site
   Requires tokens.css to be loaded first
   =========================== */

/* ===========================
   Buttons
   =========================== */

/* Base Button Styles */
.btn-enhanced,
.btn-enhanced-lg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-family: 'Inter', 'Segoe UI', Roboto, sans-serif;
  font-weight: var(--font-semibold);
  border: none;
  outline: none;
  color: var(--text-inverse);
  background: var(--brand-gradient);
  letter-spacing: var(--tracking-wider);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  overflow: hidden;
  will-change: transform;
  transform: translateZ(0); /* GPU composite layer */
  text-decoration: none;
}

/* Button Sizes */
.btn-enhanced {
  padding: var(--space-sm) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  box-shadow: var(--shadow-brand-md);
}

.btn-enhanced:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-brand-lg);
}

.btn-enhanced-lg {
  padding: var(--space-md) var(--space-2xl);
  border-radius: var(--radius-xl);
  font-size: var(--font-lg);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  box-shadow: var(--shadow-brand-lg);
}

.btn-enhanced-lg:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2xl);
}

/* Shine Effect */
.btn-enhanced::before,
.btn-enhanced-lg::before {
  content: '';
  position: absolute;
  top: 0;
  left: -75%;
  width: 50%;
  height: 100%;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0) 80%);
  transform: skewX(-25deg);
  transition: left var(--transition-slower);
}

.btn-enhanced:hover::before,
.btn-enhanced-lg:hover::before {
  left: 125%;
}

/* Primary Button */
.btn-primary,
.btn-main {
  background-color: var(--brand-blue);
  border-color: var(--brand-blue);
  color: #ffffff !important;
  font-weight: var(--font-semibold);
  transition: all var(--transition-fast);
}

.btn-primary:hover,
.btn-main:hover {
  background-color: var(--brand-blue-dark);
  border-color: var(--brand-blue-dark);
  color: #ffffff !important;
}

.btn-primary:focus,
.btn-main:focus {
  background-color: var(--brand-blue-dark);
  border-color: var(--brand-blue-dark);
  color: #ffffff !important;
  box-shadow: 0 0 0 0.2rem rgba(74, 144, 226, 0.25);
}

/* Outline Secondary Button */
.btn-outline-secondary {
  color: var(--brand-blue);
  border-color: var(--brand-blue);
  background-color: transparent;
  font-weight: var(--font-semibold);
  transition: all var(--transition-fast);
  border-width: 2px;
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
  color: #ffffff !important;
  background-color: var(--brand-blue) !important;
  border-color: var(--brand-blue) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

/* Outline Primary Button */
.btn-outline-primary {
  color: var(--brand-blue);
  border-color: var(--brand-blue);
  background-color: transparent;
  font-weight: var(--font-semibold);
  transition: all var(--transition-fast);
  border-width: 2px;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
  color: #ffffff !important;
  background-color: var(--brand-blue) !important;
  border-color: var(--brand-blue) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.btn-outline-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(74, 144, 226, 0.25);
}

.btn-outline-primary:focus {
  box-shadow: 0 0 0 0.2rem rgba(74, 144, 226, 0.25);
}

/* Ensure button text/icons are always visible on hover */
.btn-primary:hover,
.btn-main:hover,
.btn-outline-secondary:hover,
.btn-outline-primary:hover,
.btn-primary:focus,
.btn-main:focus,
.btn-outline-secondary:focus,
.btn-outline-primary:focus {
  text-shadow: none;
}

.btn-primary:hover i,
.btn-main:hover i,
.btn-outline-secondary:hover i,
.btn-outline-primary:hover i,
.btn-primary:focus i,
.btn-main:focus i,
.btn-outline-secondary:focus i,
.btn-outline-primary:focus i {
  color: #ffffff !important;
  opacity: 1;
}

.btn-outline-secondary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(74, 144, 226, 0.25);
}

.btn-outline-secondary:focus {
  box-shadow: 0 0 0 0.2rem rgba(74, 144, 226, 0.25);
}

/* Letter Button (Special variant) */
.btn-letter {
  font-weight: var(--font-semibold);
  letter-spacing: 0.5px;
  border-radius: var(--radius-xl);
  text-transform: uppercase;
  box-shadow: var(--shadow-xl);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  will-change: transform;
}

.btn-letter:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2xl);
}

.btn-letter-sm {
  border-radius: var(--radius-md);
  letter-spacing: 0.3px;
}

/* Button Variants */
.btn-theme,
.btn-transparent,
.btn-small {
  background: var(--brand-blue);
  color: var(--text-inverse);
  transition: all var(--transition-fast);
}

.btn-theme:hover,
.btn-transparent:hover,
.btn-small:hover {
  background: var(--brand-blue-dark);
  color: var(--text-inverse);
}

.btn-transparent {
  background: transparent;
  padding: 0;
  color: var(--brand-blue);
}

.btn-transparent:hover {
  background: transparent;
  color: var(--brand-blue-dark);
}

.btn-solid-border {
  border: 2px solid var(--brand-blue);
  background: transparent;
  color: var(--ink);
}

.btn-solid-border:hover {
  border: 2px solid var(--brand-blue);
  background: var(--brand-blue);
  color: var(--text-inverse);
}

/* Segmented Buttons */
.btn-segmented {
  display: inline-flex;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.btn-segmented .btn {
  border-radius: 0 !important;
  padding: var(--space-sm) var(--space-md) !important;
  font-size: var(--font-xs) !important;
  font-weight: var(--font-bold);
  letter-spacing: 0.35px;
  background: var(--bg-secondary) !important;
  color: var(--ink) !important;
  border: 1px solid var(--border-light) !important;
}

.btn-segmented .btn + .btn {
  border-left: 0 !important;
}

.btn-segmented .btn:first-child {
  border-top-left-radius: var(--radius-xl) !important;
  border-bottom-left-radius: var(--radius-xl) !important;
}

.btn-segmented .btn:last-child {
  border-top-right-radius: var(--radius-xl) !important;
  border-bottom-right-radius: var(--radius-xl) !important;
}

.btn-segmented .btn:hover {
  background: var(--brand-blue-lighter) !important;
  color: var(--brand-blue) !important;
  transform: none;
  box-shadow: none;
}

/* Button States */
.btn-enhanced:focus-visible,
.btn-enhanced-lg:focus-visible {
  outline: 3px solid rgba(74, 144, 226, 0.6);
  outline-offset: 3px;
}

.btn-enhanced:active,
.btn-enhanced-lg:active {
  transform: translateY(0);
  box-shadow: var(--shadow-brand-sm);
}

.btn-enhanced:disabled,
.btn-enhanced-lg:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  box-shadow: none;
}

/* ===========================
   Badges
   =========================== */

.badge-enhanced {
  background: var(--brand-gradient);
  color: var(--text-inverse);
  font-size: var(--font-sm);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wider);
  border-radius: var(--radius-5xl);
  padding: var(--space-sm) var(--space-md);
  box-shadow: var(--shadow-brand-sm);
}

.badge-grad {
  background: var(--brand-gradient);
  color: var(--text-inverse);
  font-size: var(--font-base);
  font-weight: var(--font-semibold);
  letter-spacing: 0.5px;
  border-radius: var(--radius-6xl);
  box-shadow: var(--shadow-brand-sm);
}

/* ===========================
   Cards
   =========================== */

.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-slow);
}

.card-title a:hover {
  color: var(--brand-blue);
  text-decoration: none;
}

/* ===========================
   Chips / Pills
   =========================== */

.nav-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-weight: var(--font-bold);
  font-size: var(--font-sm);
  border-radius: var(--radius-2xl);
  background: var(--bg-primary);
  border: 1px solid var(--border-blue-medium);
  color: var(--ink);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.nav-pill:hover,
.nav-link:focus-visible .nav-pill {
  border-color: var(--border-blue-strong);
  background: var(--brand-blue-lighter);
  color: var(--brand-blue);
  transform: translateY(-1px);
  box-shadow: var(--shadow-brand-hover);
}

.nav-link.active .nav-pill {
  background: var(--brand-gradient);
  color: var(--text-inverse);
  border-color: var(--brand-blue);
  box-shadow: var(--shadow-brand-xl);
}

/* Appendix pills */
.nav-pill--appendix {
  background: var(--bg-primary);
  border: 1px dashed var(--border-blue-strong);
  color: var(--ink);
  font-style: italic;
  font-weight: var(--font-medium);
  transition: all var(--transition-base);
}

.nav-pill--appendix strong {
  color: var(--brand-blue);
  background: rgba(74, 144, 226, 0.08);
  padding: 2px var(--space-sm);
  border-radius: var(--radius-sm);
  font-weight: var(--font-bold);
  letter-spacing: 0.3px;
}

.nav-pill--appendix:hover {
  background: rgba(74, 144, 226, 0.06);
  border-color: var(--brand-blue);
  color: var(--ink);
  transform: translateY(-1px);
  box-shadow: var(--shadow-brand-md);
}

.nav-link.active .nav-pill--appendix {
  background: var(--brand-gradient);
  color: var(--text-inverse);
  border-style: solid;
  border-color: var(--brand-blue);
  font-style: normal;
}

.nav-link.active .nav-pill--appendix strong {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-inverse);
}

/* ===========================
   Brand Utilities
   =========================== */

.bg-primary {
  background: var(--brand-blue);
}

.bg-primary-dark {
  background: var(--brand-blue-dark);
}

.bg-primary-darker {
  background: var(--brand-blue-darker);
}

.bg-gradient {
  background: var(--brand-gradient);
}

.text-primary {
  color: var(--brand-blue);
}

.text-primary-dark {
  color: var(--brand-blue-dark);
}

.text-gradient {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: var(--font-semibold);
}

/* ===========================
   Motion Sensitivity
   =========================== */

@media (prefers-reduced-motion: reduce) {
  .btn-enhanced,
  .btn-enhanced-lg,
  .btn-main,
  .btn-primary,
  .btn-outline-secondary,
  .btn-letter,
  .nav-pill {
    transition: none;
    transform: none !important;
  }

  .btn-enhanced:hover,
  .btn-enhanced-lg:hover,
  .btn-main:hover,
  .btn-primary:hover,
  .btn-outline-secondary:hover,
  .btn-letter:hover,
  .nav-pill:hover {
    transform: none;
  }

  .btn-enhanced::before,
  .btn-enhanced-lg::before {
    transition: none;
  }
}