/* ==========================================================================
   Zen Ivory Minimalist Design System - Mobility & Posture for Harsha
   ========================================================================== */

:root {
  /* Warm Ivory / Alabaster Base Palette */
  --bg-page: #FAF8F5;
  --bg-card: #FFFFFF;
  --bg-card-subtle: #F5F1EB;
  --bg-card-hover: #F0EAE1;
  
  /* Ink & Typography Hierarchy */
  --ink-primary: #23201D;
  --ink-secondary: #59544E;
  --ink-muted: #8E877F;
  --ink-light: #DDD7CE;
  --ink-faint: #ECE7DE;

  /* Theme Accents (Morning Sunrise Glow) */
  --accent-morning: #C26122;
  --accent-morning-light: #FDF3EB;
  --accent-morning-border: #F3D3BD;

  /* Theme Accents (Evening Moonlit Twilight) */
  --accent-night: #5B4E96;
  --accent-night-light: #F3F0FA;
  --accent-night-border: #D7D0EB;

  /* Active dynamic values */
  --accent: var(--accent-morning);
  --accent-light: var(--accent-morning-light);
  --accent-border: var(--accent-morning-border);

  /* Typography */
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* Radii & Shadows */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --shadow-subtle: 0 4px 20px -2px rgba(42, 39, 37, 0.05);
  --shadow-hover: 0 12px 32px -4px rgba(42, 39, 37, 0.08);

  /* Transitions */
  --ease-zen: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: all 0.4s var(--ease-zen);
}

[data-theme="twilight"] {
  --accent: var(--accent-night);
  --accent-light: var(--accent-night-light);
  --accent-border: var(--accent-night-border);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  min-height: 100%;
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--ink-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Subtle organic ambient warmth */
.ambient-decor {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle at 50% 15%, var(--accent-light) 0%, transparent 65%);
  opacity: 0.85;
  transition: background 0.8s ease;
}

/* Main Content Container */
.app-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem 1.75rem 3rem 1.75rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   Minimal Top Header
   ========================================================================== */
.minimal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0 1.5rem 0;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.brand-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-primary);
}
.brand-tag {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--ink-muted);
  background: var(--bg-card-subtle);
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-full);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Clean Routine Selector Switcher */
.routine-pill-switch {
  display: inline-flex;
  background: var(--bg-card-subtle);
  border: 1px solid var(--ink-faint);
  border-radius: var(--radius-full);
  padding: 0.2rem;
}
.routine-pill-btn {
  border: none;
  background: transparent;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-smooth);
}
.routine-pill-btn svg {
  width: 13px;
  height: 13px;
}
.routine-pill-btn.active {
  background: var(--bg-card);
  color: var(--accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.icon-button {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--ink-faint);
  background: var(--bg-card);
  color: var(--ink-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}
.icon-button:hover {
  color: var(--ink-primary);
  border-color: var(--ink-light);
  transform: translateY(-1px);
}

/* ==========================================================================
   Views Management
   ========================================================================== */
.view-pane {
  display: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s var(--ease-zen), transform 0.4s var(--ease-zen);
  flex-direction: column;
  flex: 1;
}
.view-pane.active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   VIEW 1: Ultra-Clean Zen Startup Screen
   ========================================================================== */
.startup-centered-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin: auto 0;
  padding: 3.5rem 1rem 2rem 1rem;
}

.greeting-time-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-full);
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-main-greeting {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink-primary);
  letter-spacing: -0.01em;
  margin-bottom: 0.85rem;
}

.hero-invitation {
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  color: var(--ink-secondary);
  font-weight: 400;
  max-width: 460px;
  margin-bottom: 2.25rem;
  line-height: 1.5;
}

.hero-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.05rem 2.75rem;
  border-radius: var(--radius-full);
  background: var(--ink-primary);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 24px -4px rgba(35, 32, 29, 0.25);
  transition: var(--transition-smooth);
}
.hero-cta-btn:hover {
  transform: translateY(-2px);
  background: #000000;
  box-shadow: 0 12px 30px -4px rgba(35, 32, 29, 0.35);
}
.hero-cta-btn svg {
  width: 18px;
  height: 18px;
}

.startup-bottom-bar {
  margin-top: auto;
  display: flex;
  justify-content: center;
  padding-top: 2rem;
}
.know-routine-link {
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  transition: var(--transition-smooth);
}
.know-routine-link:hover {
  color: var(--ink-primary);
  background: var(--bg-card-subtle);
}
.know-routine-link svg {
  width: 15px;
  height: 15px;
}

/* ==========================================================================
   VIEW 2: "Know Your Routine" Details Screen
   ========================================================================== */
.details-page-header {
  margin-bottom: 2rem;
}
.back-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: none;
  background: transparent;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-muted);
  cursor: pointer;
  padding: 0.4rem 0;
  margin-bottom: 0.85rem;
  transition: var(--transition-smooth);
}
.back-nav-btn:hover {
  color: var(--ink-primary);
}
.details-page-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--ink-primary);
  line-height: 1.2;
}
.details-page-subtitle {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  margin-top: 0.35rem;
}

.details-routine-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--ink-faint);
  padding-bottom: 0.75rem;
}
.details-tab-btn {
  border: none;
  background: transparent;
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-muted);
  cursor: pointer;
  transition: var(--transition-smooth);
}
.details-tab-btn.active {
  background: var(--bg-card-subtle);
  color: var(--ink-primary);
}

.details-exercises-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}
.detail-item-card {
  background: var(--bg-card);
  border: 1px solid var(--ink-faint);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition-smooth);
}
.detail-item-card:hover {
  border-color: var(--ink-light);
  box-shadow: var(--shadow-hover);
}

.detail-card-inner {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}
.detail-thumbnail-box {
  width: 100px;
  height: 100px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--ink-faint);
  background: var(--bg-card-subtle);
}
.detail-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.detail-info-box {
  flex: 1;
}

.detail-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.35rem;
}
.detail-pose-num {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
}
.detail-pose-time {
  font-size: 0.78rem;
  color: var(--ink-muted);
  font-weight: 500;
  background: var(--bg-card-subtle);
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-full);
}
.detail-pose-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink-primary);
  margin-bottom: 0.35rem;
}
.detail-pose-instruct {
  font-size: 0.9rem;
  color: var(--ink-secondary);
  line-height: 1.5;
  margin-bottom: 0.65rem;
}
.detail-pose-benefit {
  font-size: 0.82rem;
  color: var(--ink-muted);
  border-left: 2px solid var(--accent-border);
  padding-left: 0.75rem;
  margin-bottom: 0.65rem;
}
.detail-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.detail-tag {
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card-subtle);
  color: var(--ink-secondary);
}

/* Key Guidance Section */
.guidance-box {
  background: var(--bg-card);
  border: 1px solid var(--ink-faint);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
}
.guidance-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.guidance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}
.guidance-item h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 0.25rem;
}
.guidance-item p {
  font-size: 0.82rem;
  color: var(--ink-muted);
  line-height: 1.5;
}

/* ==========================================================================
   VIEW 3: Minimal Guided Routine Player
   ========================================================================== */
.player-wrapper {
  display: flex;
  flex-direction: column;
  flex: 1;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
  justify-content: space-between;
}

.player-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
}
.player-close-btn {
  border: none;
  background: transparent;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0;
  transition: var(--transition-smooth);
}
.player-close-btn:hover {
  color: var(--ink-primary);
}
.player-counter {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-muted);
}

/* Thin Progress Line */
.minimal-progress-bar {
  width: 100%;
  height: 3px;
  background: var(--ink-faint);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 1.5rem;
}
.minimal-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.3s ease;
}

/* Central Stretch Stage */
.player-main-stage {
  background: var(--bg-card);
  border: 1px solid var(--ink-faint);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

/* Side Switch Notification Pill */
.side-indicator-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
  animation: pulseGentle 2s infinite ease-in-out;
}

/* Photographic Studio Visual Card */
.visual-card-wrapper {
  position: relative;
  width: 280px;
  height: 230px;
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.visual-breath-halo {
  position: absolute;
  inset: -6px;
  border-radius: calc(var(--radius-md) + 6px);
  border: 2px solid var(--accent);
  opacity: 0.3;
  animation: haloBreath 4s ease-in-out infinite;
  pointer-events: none;
}
.pose-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px -4px rgba(42, 39, 37, 0.1);
  transition: opacity 0.4s ease;
}

/* Main Timer Display */
.player-time-digits {
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 8vw, 4.25rem);
  font-weight: 600;
  line-height: 1;
  color: var(--ink-primary);
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.4rem;
}

/* Breath Guide */
.breath-pacer-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 1rem;
  min-height: 1.5rem;
}

/* Pose Title & Description */
.player-pose-name {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3.5vw, 1.85rem);
  font-weight: 600;
  color: var(--ink-primary);
  line-height: 1.25;
  margin-bottom: 0.45rem;
}
.player-pose-desc {
  font-size: 0.9rem;
  color: var(--ink-secondary);
  line-height: 1.55;
  max-width: 480px;
  margin-bottom: 0.75rem;
}

.player-tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: center;
}

/* Playback Control Row */
.player-action-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 1.5rem 0 0.5rem 0;
}
.control-icon-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--ink-faint);
  background: var(--bg-card);
  color: var(--ink-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}
.control-icon-btn svg {
  width: 20px;
  height: 20px;
}
.control-icon-btn:hover {
  color: var(--ink-primary);
  border-color: var(--ink-light);
  transform: scale(1.05);
}
.control-play-main {
  width: 58px;
  height: 58px;
  background: var(--ink-primary);
  color: #FFFFFF;
  border: none;
  box-shadow: 0 6px 18px rgba(35, 32, 29, 0.2);
}
.control-play-main svg {
  width: 24px;
  height: 24px;
}
.control-play-main:hover {
  background: #000000;
  transform: scale(1.06);
}

/* ==========================================================================
   VIEW 4: Completion Screen (Warm Blessing)
   ========================================================================== */
.completion-wrapper {
  margin: auto 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2.5rem 1rem;
}

.completion-emblem {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}
.completion-emblem svg {
  width: 32px;
  height: 32px;
}

.completion-heading {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5.5vw, 3.2rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink-primary);
  margin-bottom: 0.85rem;
}

.completion-message-card {
  background: var(--bg-card);
  border: 1px solid var(--ink-faint);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  max-width: 520px;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-subtle);
}
.completion-quote-text {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--accent);
  margin-bottom: 0.65rem;
}
.completion-blessing-text {
  font-size: 1rem;
  color: var(--ink-primary);
  font-weight: 500;
  line-height: 1.5;
}

.completion-nav-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}
.completion-btn-primary {
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius-full);
  background: var(--ink-primary);
  color: #FFFFFF;
  font-weight: 600;
  font-size: 0.92rem;
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
}
.completion-btn-primary:hover {
  background: #000000;
  transform: translateY(-1px);
}
.completion-btn-subtle {
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--ink-faint);
  color: var(--ink-secondary);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}
.completion-btn-subtle:hover {
  color: var(--ink-primary);
  border-color: var(--ink-light);
}

/* ==========================================================================
   Transition / Get Ready Minimal Overlay
   ========================================================================== */
.transition-curtain {
  position: fixed;
  inset: 0;
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}
.transition-curtain.active {
  opacity: 1;
  pointer-events: auto;
}
.transition-prep-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.transition-timer-num {
  font-family: var(--font-serif);
  font-size: 5.5rem;
  font-weight: 600;
  color: var(--ink-primary);
  line-height: 1;
  margin-bottom: 1rem;
}
.transition-next-text {
  font-size: 0.9rem;
  color: var(--ink-muted);
  margin-bottom: 0.25rem;
}
.transition-target-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--ink-primary);
}

/* ==========================================================================
   Keyframes
   ========================================================================== */
@keyframes pulseGentle {
  0%, 100% { opacity: 0.9; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.03); }
}

@keyframes haloBreath {
  0%, 100% { transform: scale(1); opacity: 0.2; }
  50% { transform: scale(1.04); opacity: 0.65; }
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 640px) {
  .app-container {
    padding: 1rem 1.25rem 2rem 1.25rem;
  }
  .hero-main-greeting {
    font-size: 2.3rem;
  }
  .hero-invitation {
    font-size: 1.05rem;
  }
  .hero-cta-btn {
    width: 100%;
    padding: 0.95rem 1.5rem;
  }
  .player-main-stage {
    padding: 1.5rem 1.25rem;
  }
  .visual-card-wrapper {
    width: 240px;
    height: 200px;
  }
  .player-time-digits {
    font-size: 3rem;
  }
  .detail-card-inner {
    flex-direction: column;
  }
  .detail-thumbnail-box {
    width: 100%;
    height: 160px;
  }
  .guidance-grid {
    grid-template-columns: 1fr;
  }
}