/**
 * Attention Motion System - Threadly
 *
 * Purposeful motion ONLY for:
 * - Change
 * - Urgency
 * - Resolution
 *
 * NO decorative animation. NO looping motion.
 * Duration < 200ms. One-time per state change.
 */

/* === MOTION VARIABLES === */
:root {
  --motion-duration-fast: 100ms;
  --motion-duration-normal: 150ms;
  --motion-duration-slow: 200ms;
  --motion-easing: cubic-bezier(0.4, 0, 0.2, 1);

  /* Urgency zone colors */
  --urgency-red: #ef4444;
  --urgency-red-bg: #fef2f2;
  --urgency-amber: #f59e0b;
  --urgency-amber-bg: #fffbeb;
  --urgency-calm: #6b7280;
  --decision-green: #10b981;
  --decision-green-bg: #ecfdf5;
}

/* === RESPECT USER PREFERENCES === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* === HIGH-ATTENTION PULSE === */
/* One-time pulse when high-attention item first appears */
.attention-pulse {
  animation: attention-pulse var(--motion-duration-normal) var(--motion-easing);
}

@keyframes attention-pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.3);
  }
  50% {
    transform: scale(1.005);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.15);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
  }
}

/* === DECISION HIGHLIGHT === */
/* Soft glow when decision enters or updates */
.decision-highlight {
  animation: decision-glow var(--motion-duration-slow) var(--motion-easing);
}

@keyframes decision-glow {
  0% {
    background-color: rgba(251, 191, 36, 0);
    box-shadow: 0 0 0 0 rgba(251, 191, 36, 0.3);
  }
  30% {
    background-color: rgba(251, 191, 36, 0.15);
    box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.2);
  }
  100% {
    background-color: transparent;
    box-shadow: none;
  }
}

/* === ACTION COMPLETED === */
/* Check mark confirmation for completed actions */
.action-complete {
  animation: action-complete var(--motion-duration-normal) var(--motion-easing);
}

@keyframes action-complete {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* === ATTENTION RESOLVED === */
/* Smooth fade when item leaves high-attention state */
.attention-resolved {
  animation: attention-resolve var(--motion-duration-slow) var(--motion-easing) forwards;
}

@keyframes attention-resolve {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0.7;
    transform: translateY(2px);
  }
}

/* === STATE TRANSITIONS === */
/* Smooth color transitions between attention states */
.thread-card,
.dashboard-item {
  transition:
    border-color var(--motion-duration-fast) var(--motion-easing),
    background-color var(--motion-duration-fast) var(--motion-easing),
    box-shadow var(--motion-duration-fast) var(--motion-easing),
    opacity var(--motion-duration-fast) var(--motion-easing);
}

/* === NEW ITEM INDICATOR === */
/* Subtle dot for changed-since-view items */
.new-indicator {
  position: relative;
}

.new-indicator::after {
  content: '';
  position: absolute;
  top: 4px;
  right: 4px;
  width: 8px;
  height: 8px;
  background: #3b82f6;
  border-radius: 50%;
  animation: indicator-fade 3s var(--motion-easing) forwards;
}

@keyframes indicator-fade {
  0%, 80% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

/* === URGENCY ZONE STYLING === */

/* Red Zone - Immediate attention */
.urgency-red {
  --accent-color: var(--urgency-red);
  --accent-bg: var(--urgency-red-bg);
  border-left: 4px solid var(--accent-color);
  background: linear-gradient(135deg, var(--accent-bg) 0%, white 100%);
}

.urgency-red .headline {
  color: var(--urgency-red);
}

/* Amber Zone - Soon */
.urgency-amber {
  --accent-color: var(--urgency-amber);
  --accent-bg: var(--urgency-amber-bg);
  border-left: 2px solid var(--accent-color);
  background: linear-gradient(135deg, var(--accent-bg) 0%, white 100%);
}

.urgency-amber .headline {
  color: var(--urgency-amber);
}

/* Calm Zone - Informational */
.urgency-calm {
  --accent-color: transparent;
  --accent-bg: transparent;
  border-left: none;
  background: white;
}

.urgency-calm .headline {
  color: var(--urgency-calm);
}

/* === DECISION BLOCK STYLING === */

.decision-block {
  padding: 12px;
  background: linear-gradient(135deg, var(--decision-green-bg) 0%, #f0fdf4 100%);
  border: 1px solid #bbf7d0;
  border-radius: 12px;
  transition: all var(--motion-duration-normal) var(--motion-easing);
}

.decision-block:hover {
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.1);
}

/* Updated decision */
.decision-block.decision-updated {
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border-color: #fcd34d;
}

/* Reversed decision */
.decision-block.decision-reversed {
  background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
  border-color: #fca5a5;
}

/* === DASHBOARD LANE STYLING === */

.dashboard-lane {
  margin-bottom: 2rem;
}

.dashboard-lane-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.dashboard-lane-header .indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dashboard-lane-header .indicator.red {
  background: var(--urgency-red);
  animation: pulse-dot 2s ease-in-out infinite;
}

.dashboard-lane-header .indicator.amber {
  background: var(--urgency-amber);
}

.dashboard-lane-header .indicator.calm {
  background: #d1d5db;
}

@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.1);
  }
}

/* === BADGE STYLING === */

.attention-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.attention-badge.red {
  background: var(--urgency-red);
  color: white;
}

.attention-badge.amber {
  background: var(--urgency-amber);
  color: white;
}

.attention-badge.green {
  background: var(--decision-green);
  color: white;
}

.attention-badge.gray {
  background: #e5e7eb;
  color: #4b5563;
}

/* === DECISION CHANGE ALERT === */

.decision-change-alert {
  padding: 1rem;
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border: 1px solid #fcd34d;
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.decision-change-alert .alert-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: #92400e;
  margin-bottom: 0.5rem;
}

.decision-change-item {
  display: block;
  padding: 0.5rem;
  background: white;
  border: 1px solid #fde68a;
  border-radius: 8px;
  margin-bottom: 0.5rem;
  transition: border-color var(--motion-duration-fast) var(--motion-easing);
}

.decision-change-item:hover {
  border-color: var(--urgency-amber);
}

/* === EMPTY STATE === */

.attention-empty-state {
  text-align: center;
  padding: 4rem 2rem;
}

.attention-empty-state .icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  background: #d1fae5;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.attention-empty-state .icon svg {
  width: 32px;
  height: 32px;
  color: var(--decision-green);
}

.attention-empty-state h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: #111827;
  margin-bottom: 0.25rem;
}

.attention-empty-state p {
  color: #6b7280;
}

/* === LOADING STATE === */

.attention-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  color: #6b7280;
}

.attention-loading .spinner {
  width: 20px;
  height: 20px;
  border: 2px solid #e5e7eb;
  border-top-color: #3b82f6;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 0.5rem;
}

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

/* ============================================================
   UNIFIED WORKFLOW VIEW — Lifecycle card urgency signals
   ============================================================ */

.lifecycle-card-urgent {
  border-left: 4px solid #ef4444;
  box-shadow: 0 0 0 1px rgba(239, 68, 68, 0.1);
}

.lifecycle-card-warm {
  border-left: 3px solid #f59e0b;
}

.lifecycle-card-hot {
  animation: lifecycle-pulse 3s ease-in-out infinite;
}

@keyframes lifecycle-pulse {
  0%, 100% {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  }
  50% {
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.15);
  }
}

/* Smooth view container transitions */
.view-container {
  transition: opacity var(--motion-duration-normal, 150ms) var(--motion-easing, ease);
}

/* ============================================================
   GLOBAL OVERFLOW PREVENTION
   Prevents horizontal scroll on all pages
   ============================================================ */
html, body {
  overflow-x: hidden;
  max-width: 100%;
}

/* ============================================================
   FLOATING ACTION BUTTON — Safe positioning
   Ensure FABs never cause layout overflow
   ============================================================ */
#ai-chat-container,
#ssot-toggle-btn {
  max-width: calc(100% - 1rem);
}

/* Chat window mobile constraint */
@media (max-width: 639px) {
  #chat-window {
    right: -0.5rem !important;
    width: calc(100vw - 2rem) !important;
    max-width: 384px !important;
  }
}

/* ============================================================
   GPU-ACCELERATED TRANSITIONS
   Use transform + opacity only for smooth 60fps animations
   ============================================================ */

/* Navigation view transitions — cross-fade instead of layout shift */
#email-timeline,
#threads-grid,
#calendar-view,
#workflow-view {
  will-change: opacity;
}

/* Card interactions — transform only, no layout recalc */
.thread-card,
.glass-card,
.pressure-card,
.lifecycle-card-urgent,
.lifecycle-card-warm {
  will-change: transform;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

/* Slide-in panels — GPU composited */
#ssot-dashboard {
  will-change: transform;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

/* ============================================================
   MOBILE SAFARI OPTIMIZATIONS
   ============================================================ */

/* Prevent rubber-band overscroll from revealing overflow */
@supports (-webkit-touch-callout: none) {
  body {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: none;
  }

  /* Fix Safari 100vh bug — use dvh where supported */
  .h-screen,
  .min-h-screen {
    height: 100vh;
    height: 100dvh;
  }

  /* Prevent tap delay on interactive elements */
  a, button, input, select, textarea {
    -webkit-tap-highlight-color: transparent;
  }

  /* Smooth momentum scrolling for sidebars and panels */
  .overflow-y-auto,
  .overflow-auto {
    -webkit-overflow-scrolling: touch;
  }
}

/* Prevent overscroll bounce from revealing horizontal overflow */
html {
  overscroll-behavior-x: none;
}

/* ============================================================
   NAVIGATION TRANSITIONS
   Subtle easing for view switches and page navigation
   ============================================================ */

/* View toggle buttons — smooth active state */
.view-toggle-btn {
  transition:
    background-color var(--motion-duration-fast, 100ms) var(--motion-easing, ease),
    color var(--motion-duration-fast, 100ms) var(--motion-easing, ease),
    box-shadow var(--motion-duration-fast, 100ms) var(--motion-easing, ease);
}

/* Sidebar nav links — smooth hover */
nav ul a,
nav ul button {
  transition:
    background-color var(--motion-duration-fast, 100ms) var(--motion-easing, ease),
    color var(--motion-duration-fast, 100ms) var(--motion-easing, ease);
}

/* Mobile menu overlay — fade transition */
#mobile-menu {
  transition: opacity var(--motion-duration-normal, 150ms) var(--motion-easing, ease);
}

/* Sidebar overlay — smooth backdrop */
.mobile-sidebar-overlay {
  transition: opacity var(--motion-duration-normal, 150ms) var(--motion-easing, ease);
}