/* ==========================================================================
   Utilities: Buttons, Feedback, Empty States
   Story 1.2 -- reusable classes consumed by Stories 1.3-1.8 and Epics 2-7
   ========================================================================== */

/* ---------------------------------------------------------------------------
   BUTTONS
   Tier 1: Primary (coral filled CTA)
   Tier 2: Secondary (ghost / outlined)
   Tier 3: Text (link-style)
   Tier 4: Danger (admin only)
   --------------------------------------------------------------------------- */

/* --- Tier 1: Primary ---------------------------------------------------- */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-coral);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-pill);       /* 50px -- full pill shape */
  padding: 14px 28px;
  font-family: var(--font-sans);
  font-size: var(--font-body-sm);
  font-weight: 600;
  line-height: 1;
  min-height: 48px;                         /* exceeds 44px touch target */
  cursor: pointer;
  transition: transform var(--duration-base) var(--ease-out-expo),
              box-shadow var(--duration-base) var(--ease-out-expo),
              background var(--duration-base) var(--ease-out-expo);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(226, 109, 92, 0.35);
  background: var(--color-interactive-hover);
}

.btn-primary:active {
  transform: translateY(-0.5px);
  box-shadow: 0 3px 8px rgba(226, 109, 92, 0.25);
}

.btn-primary:disabled {
  background: rgba(226, 109, 92, 0.4);    /* coral at 40% opacity */
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* --- Tier 2: Secondary (ghost / outlined) ------------------------------- */

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--color-dark-brown);
  border: 2px solid var(--color-dark-brown);
  border-radius: var(--radius-pill);       /* 50px */
  padding: 14px 28px;
  font-family: var(--font-sans);
  font-size: var(--font-body-sm);
  font-weight: 600;
  line-height: 1;
  min-height: 48px;
  cursor: pointer;
  transition: background var(--duration-base) var(--ease-out-expo),
              border-color var(--duration-base) var(--ease-out-expo);
}

.btn-secondary:hover {
  background: rgba(71, 45, 48, 0.06);     /* whisper of dark-brown */
}

/* Dark background variant (used in footer and dark sections) */
.btn-secondary.on-dark {
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--color-white);
}

.btn-secondary.on-dark:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* --- Tier 3: Text / Link ------------------------------------------------ */

.btn-text {
  display: inline-flex;
  align-items: center;
  background: none;
  border: none;
  color: var(--color-dark-brown);
  font-family: var(--font-sans);
  font-size: var(--font-body-sm);
  font-weight: 400;
  cursor: pointer;
  padding: 0.25rem 0;
  position: relative;
  transition: color var(--duration-base) var(--ease-out-expo);
}

/* Animated underline that grows from 0% to 100% width on hover */
.btn-text::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-coral);
  transition: width var(--duration-slow) var(--ease-out-expo);
}

.btn-text:hover {
  color: var(--color-coral);
}

.btn-text:hover::after {
  width: 100%;
}

.btn-text.brand-more-activated {
  animation: brand-more-nudge 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.btn-text.brand-more-activated::after {
  width: 100%;
}

.brand-label-ready {
  opacity: 0;
  transform: translateY(18px);
}

.brand-label-ready.brand-label-in {
  animation: brand-label-settle 1800ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.filter-tab.brand-filter-activated {
  animation: brand-filter-pulse 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.resource-card.brand-card-enter,
.past-event-card.brand-card-enter {
  animation: brand-card-enter 1800ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

@media (max-width: 767px) {
  .brand-label-ready.brand-label-in,
  .resource-card.brand-card-enter,
  .past-event-card.brand-card-enter {
    animation-duration: 900ms;
  }
}

.brand-reading-progress {
  position: fixed;
  top: var(--header-safe-top);
  left: 0;
  z-index: 1200;
  width: 100%;
  height: 3px;
  pointer-events: none;
  background: transparent;
  transform: scaleX(var(--brand-reading-progress, 0));
  transform-origin: left center;
}

.brand-reading-progress::before {
  content: '';
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #0fb58f 0%, #88d33d 58%, #f2c98c 100%);
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-sage) 46%, transparent);
}

@keyframes brand-more-nudge {
  0% {
    transform: translateY(0);
  }

  38% {
    transform: translateY(4px);
  }

  100% {
    transform: translateY(0);
  }
}

@keyframes brand-label-settle {
  0% {
    opacity: 0;
    transform: translateY(18px) scale(0.96);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes brand-filter-pulse {
  0% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--color-coral) 18%, transparent);
    transform: translateY(0) scale(1);
  }

  38% {
    box-shadow: 0 0 0 5px color-mix(in srgb, var(--color-coral) 10%, transparent);
    transform: translateY(-1px) scale(1.025);
  }

  100% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--color-coral) 0%, transparent);
    transform: translateY(0) scale(1);
  }
}

@keyframes brand-card-enter {
  0% {
    opacity: 0;
    transform: translateY(12px) scale(0.985);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* --- Tier 4: Danger (admin only) ---------------------------------------- */

/* Admin panel only -- never use on public-facing pages */
.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--color-danger);
  border: 2px solid var(--color-danger);
  border-radius: var(--radius-pill);
  padding: 14px 28px;
  font-family: var(--font-sans);
  font-size: var(--font-body-sm);
  font-weight: 600;
  line-height: 1;
  min-height: 48px;
  cursor: pointer;
  transition: background var(--duration-base) var(--ease-out-expo),
              color var(--duration-base) var(--ease-out-expo);
}

.btn-danger:hover {
  background: var(--color-danger-bg);
  color: var(--color-danger-hover);
}

/* ---------------------------------------------------------------------------
   FEEDBACK PATTERNS
   --------------------------------------------------------------------------- */

/* Lightweight inline feedback (e.g. "Link copied!") */
.feedback-inline {
  font-family: var(--font-sans);
  font-size: var(--font-sm);
  color: var(--color-text-secondary);      /* burgundy -- muted, not shouting */
  line-height: 1.5;
  margin-top: var(--space-xs);             /* 4px gap below trigger element */
}

/* Medium-weight block feedback (e.g. form submission success) */
.feedback-block {
  background: var(--color-sage-light);     /* #F4F5EC -- warm sage tint */
  color: var(--color-text-primary);        /* dark-brown text */
  border-radius: var(--radius-sm);         /* 12px */
  padding: var(--space-md);               /* 16px */
  font-family: var(--font-sans);
  font-size: var(--font-body-sm);
  line-height: 1.6;
}

.celebration-feedback {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--space-md) + 12px);
}

.celebration-feedback::before {
  content: '';
  position: absolute;
  top: var(--space-sm);
  right: var(--space-md);
  left: var(--space-md);
  height: 4px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, #0fb58f 0%, #88d33d 58%, #f2c98c 100%);
  background-size: 200% 100%;
  box-shadow: 0 0 18px color-mix(in srgb, var(--color-sage) 34%, transparent);
  transform: scaleX(0);
  transform-origin: left center;
  animation: celebration-line-sweep 720ms var(--ease-out-expo) both;
}

.celebration-feedback::after {
  content: '✦';
  position: absolute;
  top: 1px;
  right: calc(var(--space-md) + 4px);
  color: #f2c98c;
  font-size: 0.9rem;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  animation: celebration-sparkle 900ms var(--ease-out-expo) 260ms both;
}

@keyframes celebration-line-sweep {
  from { background-position: 100% 0; transform: scaleX(0); }
  to { background-position: 0 0; transform: scaleX(1); }
}

@keyframes celebration-sparkle {
  0%, 100% { opacity: 0; transform: scale(0.65) rotate(-12deg); }
  45% { opacity: 1; transform: scale(1.15) rotate(8deg); }
}

/* Form validation error text below input */
.field-error {
  font-family: var(--font-sans);
  font-size: var(--font-xs);
  color: var(--color-coral);              /* coral for error emphasis */
  line-height: 1.5;
  margin-top: var(--space-xs);             /* 4px gap below input */
}

/* ---------------------------------------------------------------------------
   VERSE PATTERN
   --------------------------------------------------------------------------- */

.verse-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.verse-text {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  line-height: inherit;
}

.verse-citation {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--font-xs);
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  opacity: 0.58;
}

/* Error state border for input fields */
.input-error {
  border-color: var(--color-coral) !important;
}

/* ---------------------------------------------------------------------------
   EMPTY STATE PATTERN
   --------------------------------------------------------------------------- */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: var(--space-4xl);           /* 96px above */
  padding-bottom: var(--space-4xl);        /* 96px below */
  color: var(--color-text-secondary);      /* muted burgundy -- calm, not alarming */
}

.empty-state[hidden] {
  display: none !important;
}

.empty-state-icon {
  font-size: 3rem;                         /* ~48px for emoji/icon display */
  margin-bottom: var(--space-md);          /* 16px below icon */
}

.empty-state-heading {
  font-family: var(--font-sans);
  font-size: var(--font-body);
  font-weight: 600;
  margin-bottom: var(--space-sm);          /* 8px below heading */
}

.empty-state-text {
  font-family: var(--font-sans);
  font-size: var(--font-sm);
  max-width: 320px;                        /* prevent overly wide text lines */
}

/* ---------------------------------------------------------------------------
   GLOBAL LIVESTREAM NOTIFICATION OVERRIDES
   Story 3.1b -- overrides JS-injected defaults from components/islive.js
   --------------------------------------------------------------------------- */

@keyframes globalLivePulseToken {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.45;
    transform: scale(0.7);
  }
}

/* -- Card shell ---------------------------------------------------------- */

body .global-live-banner {
  right: 20px !important;
  z-index: 1400 !important;
  width: min(300px, calc(100vw - 40px)) !important;
  min-width: 0 !important;
  max-width: calc(100vw - 40px) !important;
  background: var(--color-white) !important;
  color: var(--color-text-primary) !important;
  border: 1px solid var(--color-burgundy-light) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-card-hover) !important;
  font-family: var(--font-sans) !important;
}

/* -- Header row ---------------------------------------------------------- */

body .global-live-banner-header {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  padding: 16px 16px 0 !important;
  background: transparent !important;
  color: var(--color-text-primary) !important;
}

/* -- Live pulse dot ------------------------------------------------------ */

body .global-live-banner-pulse {
  width: 8px !important;
  height: 8px !important;
  margin: 0 !important;
  background: var(--color-coral) !important;
  border-radius: 50% !important;
  box-shadow: none !important;
  flex-shrink: 0 !important;
  animation: globalLivePulseToken 2s ease-in-out infinite !important;
  animation-name: globalLivePulseToken !important;
}

/* -- "直播中" label — subtle tinted chip instead of heavy solid pill ------ */

body .global-live-banner-label {
  display: inline-flex !important;
  align-items: center !important;
  min-height: auto !important;
  padding: 4px 10px !important;
  background: color-mix(in srgb, var(--color-coral) 12%, transparent) !important;
  color: var(--color-coral) !important;
  border-radius: var(--radius-pill) !important;
  font-size: var(--font-xs) !important;
  font-weight: 700 !important;
  letter-spacing: 0.06em !important;
  text-transform: uppercase !important;
}

/* -- Close button -------------------------------------------------------- */

body .global-live-banner-close {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 28px !important;
  height: 28px !important;
  margin-left: auto !important;
  padding: 0 !important;
  background: transparent !important;
  border: none !important;
  border-radius: 50% !important;
  color: var(--color-text-secondary) !important;
  font-size: var(--font-body-sm) !important;
  line-height: 1 !important;
  transition: color var(--duration-base) var(--ease-out-expo),
              background var(--duration-base) var(--ease-out-expo) !important;
}

body .global-live-banner-close:hover {
  background: var(--color-burgundy-light) !important;
  color: var(--color-text-primary) !important;
}

/* -- Body content -------------------------------------------------------- */

body .global-live-banner-body {
  display: flex !important;
  flex-direction: column !important;
  gap: 14px !important;
  padding: 12px 16px 16px !important;
}

/* -- Event name ---------------------------------------------------------- */

body .global-live-banner-event {
  margin: 0 !important;
  color: var(--color-text-primary) !important;
  font-size: var(--font-body) !important;
  font-weight: 600 !important;
  line-height: var(--leading-tight) !important;
}

/* -- CTA link ------------------------------------------------------------ */

body .global-live-banner-link {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 6px !important;
  width: 100% !important;
  min-height: 40px !important;
  padding: 10px 20px !important;
  background: var(--color-coral) !important;
  color: var(--color-white) !important;
  border-radius: var(--radius-pill) !important;
  font-family: var(--font-sans) !important;
  font-size: var(--font-sm) !important;
  font-weight: 600 !important;
  line-height: 1 !important;
  text-decoration: none !important;
  transition: transform var(--duration-base) var(--ease-out-expo),
              box-shadow var(--duration-base) var(--ease-out-expo),
              background var(--duration-base) var(--ease-out-expo) !important;
}

body .global-live-banner-link:hover {
  transform: translateY(-2px) !important;
  background: var(--color-interactive-hover) !important;
  box-shadow: var(--shadow-card-hover) !important;
}

body .global-live-banner-link svg {
  width: 14px !important;
  height: 14px !important;
  fill: currentColor !important;
}

/* -- Mobile -------------------------------------------------------------- */

@media (max-width: 600px) {
  body .global-live-banner {
    right: 16px !important;
    left: 16px !important;
    width: auto !important;
    max-width: none !important;
  }

  body .global-live-banner-header {
    padding: 14px 14px 0 !important;
  }

  body .global-live-banner-body {
    padding: 10px 14px 14px !important;
  }

  body .global-live-banner-event {
    font-size: var(--font-body-sm) !important;
  }

  body .global-live-banner-link {
    padding: 10px 16px !important;
  }
}

/* -- Reduced motion ------------------------------------------------------ */

@media (prefers-reduced-motion: reduce) {
  .celebration-feedback::before,
  .celebration-feedback::after {
    animation: none;
  }

  .celebration-feedback::before {
    transform: none;
  }

  body .global-live-banner {
    animation: none !important;
  }

  body .global-live-banner-pulse {
    animation: none !important;
  }
}