/* BibleMemory Premium Design System */
@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400..700;1,400..700&family=Outfit:wght@100..900&display=swap');

:root {
  --bg-primary: #0b0c10;
  --bg-secondary: #141622;
  --glass-bg: rgba(20, 22, 34, 0.65);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-glow: rgba(99, 102, 241, 0.15);
  
  --color-primary: #6366f1; /* Indigo */
  --color-primary-glow: rgba(99, 102, 241, 0.4);
  --color-secondary: #a855f7; /* Purple */
  --color-accent: #f59e0b; /* Amber */
  --color-success: #10b981; /* Emerald Green */
  --color-success-bg: rgba(16, 185, 129, 0.15);
  --color-error: #f43f5e; /* Rose Red */
  --color-error-bg: rgba(244, 63, 94, 0.15);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.15);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-glow: rgba(255, 255, 255, 0.8);
  
  --font-ui: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-scripture: 'Lora', Georgia, serif;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-lg: 16px;
  --border-radius-md: 10px;
}

/* Light Theme Variables */
body.light-theme {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-glow: rgba(99, 102, 241, 0.08);
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-glow: rgba(15, 23, 42, 0.9);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-ui);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: var(--transition-smooth);
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Premium Layout Elements */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  position: relative;
  padding-bottom: 80px; /* For mobile bottom bar */
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 20px;
  box-shadow: 0 4px 15px var(--color-primary-glow);
}

h1 {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-main), var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.quick-stats-header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.streak-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: var(--color-accent);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  animation: pulse 2s infinite;
}

/* Glass Card / Frosted Panel */
.glass-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.glass-panel::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(circle at 50% 0%, var(--glass-glow), transparent 60%);
}

.glass-panel:hover {
  border-color: rgba(99, 102, 241, 0.2);
  box-shadow: 0 8px 32px 0 var(--glass-glow);
}

/* Content Container & Views */
main {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.view-section {
  display: none;
  animation: fadeIn 0.4s ease;
}

.view-section.active {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Buttons and Form Fields */
.btn {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: var(--border-radius-md);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.25);
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
  filter: brightness(1.1);
}

.btn:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
  box-shadow: none;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.03);
}

.btn-success {
  background: var(--color-success);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.25);
}
.btn-success:hover {
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-danger {
  background: var(--color-error);
  box-shadow: 0 4px 15px rgba(244, 63, 94, 0.25);
}
.btn-danger:hover {
  box-shadow: 0 6px 20px rgba(244, 63, 94, 0.4);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
  filter: none !important;
}

input, textarea, select {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 12px 16px;
  color: var(--text-main);
  font-family: var(--font-ui);
  font-size: 15px;
  outline: none;
  transition: var(--transition-smooth);
  width: 100%;
}

input:focus, textarea:focus, select:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.25);
}

label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  display: block;
  margin-bottom: 6px;
}

/* Nav Bar (Bottom Navigation Mobile-First) */
.nav-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--glass-bg);
  border-top: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  justify-content: space-around;
  padding: 10px 0;
  z-index: 1000;
  box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.1);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  background: none;
  border: none;
  width: 60px;
}

.nav-item i {
  font-size: 20px;
  transition: var(--transition-smooth);
}

.nav-item.active {
  color: var(--color-primary);
  text-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
}

.nav-item.active i {
  transform: translateY(-2px);
  color: var(--color-primary);
}

/* Scripture Text Design */
.scripture-display-box {
  font-family: var(--font-scripture);
  font-size: 20px;
  line-height: 1.7;
  letter-spacing: 0.1px;
  text-align: justify;
  margin: 16px 0;
  position: relative;
  white-space: pre-wrap;
}

.copyright-notice {
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 24px;
  padding-top: 12px;
  border-top: 1px dashed var(--glass-border);
  text-align: center;
}

/* Search / Query Section */
.search-row {
  display: flex;
  gap: 12px;
}

.search-row input {
  flex: 1;
}

/* Verse Library Cards */
.verses-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.verse-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  cursor: pointer;
}

.verse-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.verse-ref {
  font-weight: 700;
  font-size: 16px;
  color: var(--color-primary);
}

.level-badge {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 12px;
  background: var(--glass-border);
  color: var(--text-muted);
}

.level-5 {
  background: var(--color-success-bg);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--color-success);
}

.level-4, .level-3 {
  background: var(--color-warning-bg);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--color-accent);
}

.verse-card-text {
  font-family: var(--font-scripture);
  font-size: 15px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

.verse-card-footer {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--glass-border);
  padding-top: 10px;
  margin-top: 4px;
}

/* Training Room Styling */
.training-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tabs-row {
  display: flex;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 4px;
  gap: 4px;
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  padding: 10px;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tab-btn.active {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 10px var(--color-primary-glow);
}

/* Hide Word Interactive Layout */
.blank-word {
  display: inline-block;
  background: rgba(255, 255, 255, 0.05);
  border-bottom: 2px solid var(--color-primary);
  border-radius: 4px;
  color: transparent;
  min-width: 60px;
  margin: 0 4px;
  padding: 0 4px;
  text-align: center;
  transition: var(--transition-smooth);
  cursor: pointer;
}

.blank-word.revealed {
  color: var(--text-main);
  background: none;
  border-bottom-color: transparent;
}

.blank-word:hover {
  background: rgba(99, 102, 241, 0.15);
}

/* Typing Field and Verification */
.typing-box {
  width: 100%;
  min-height: 120px;
  font-family: var(--font-scripture);
  font-size: 18px;
  line-height: 1.6;
  resize: vertical;
}

.feedback-diff {
  font-family: var(--font-scripture);
  font-size: 18px;
  line-height: 1.7;
  padding: 16px;
  border-radius: var(--border-radius-md);
  background: rgba(0,0,0,0.2);
  border: 1px solid var(--glass-border);
  margin-top: 16px;
}

.diff-word {
  display: inline-block;
  margin-right: 6px;
  border-radius: 4px;
  padding: 0 2px;
}

.diff-word.correct {
  color: var(--color-success);
  background: rgba(16, 185, 129, 0.08);
}

.diff-word.incorrect {
  color: var(--color-error);
  background: rgba(244, 63, 94, 0.08);
  text-decoration: line-through;
}

.diff-word.missing {
  color: var(--color-accent);
  border: 1px dashed var(--color-accent);
  padding: 0 4px;
}

.diff-score-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  margin-top: 12px;
}

/* Voice Panel Styles */
.voice-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 30px;
  border-radius: var(--border-radius-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed var(--glass-border);
  text-align: center;
}

.mic-btn {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: white;
  border: none;
  font-size: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
  transition: var(--transition-smooth);
}

.mic-btn.recording {
  background: var(--color-error);
  box-shadow: 0 0 25px rgba(244, 63, 94, 0.6);
  animation: pulse-mic 1.5s infinite;
}

.mic-btn:hover {
  transform: scale(1.05);
}

.voice-status {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 700;
}

/* Statistics Visuals */
.stats-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.stat-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
}

.stat-val {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  text-shadow: 0 0 10px var(--glass-glow);
}

.stat-lbl {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.chart-container {
  height: 200px;
  width: 100%;
  margin-top: 16px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 10px 20px;
  border-bottom: 2px solid var(--glass-border);
  position: relative;
}

.chart-bar-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.chart-bar {
  width: 16px;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
  transition: height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 2px;
}

.chart-lbl {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 700;
}

/* Keyterm Editor / Settings */
.keyterm-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--text-main);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 13px;
  margin: 4px;
}

.keyterm-badge i {
  cursor: pointer;
  color: var(--text-muted);
  font-size: 14px;
  transition: var(--transition-smooth);
}

.keyterm-badge i:hover {
  color: var(--color-error);
}

.keyterms-list-container {
  display: flex;
  flex-wrap: wrap;
  padding: 10px;
  background: rgba(0, 0, 0, 0.15);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--glass-border);
  min-height: 80px;
  margin-top: 10px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

/* Alert Notification Panel */
.alert-popup {
  position: fixed;
  top: calc(80px + env(safe-area-inset-top, 0px));
  left: 50%;
  transform: translateX(-50%) translateY(-180px);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  padding: 12px 24px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  z-index: 10000;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.alert-popup.show {
  transform: translateX(-50%) translateY(0);
}

.alert-popup.success {
  border-color: rgba(16, 185, 129, 0.4);
  color: var(--color-success);
}

.alert-popup.error {
  border-color: rgba(244, 63, 94, 0.4);
  color: var(--color-error);
}

.alert-popup.info {
  border-color: rgba(99, 102, 241, 0.4);
  color: var(--color-primary);
}

/* Theme Switcher and controls */
.theme-toggle-header {
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}
.theme-toggle-header:hover {
  color: var(--color-primary);
  transform: rotate(30deg);
}

/* CSS Keyframe Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.03); box-shadow: 0 0 10px rgba(245, 158, 11, 0.2); }
  100% { transform: scale(1); }
}

@keyframes pulse-mic {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(244, 63, 94, 0.5); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(244, 63, 94, 0); }
}
/* Premium Tutorial Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 11000;
  animation: fadeIn 0.3s ease;
  padding: 16px;
}

.modal-content {
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.02);
}

.modal-header h2 {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  margin: 0;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 28px;
  font-weight: 300;
  cursor: pointer;
  line-height: 1;
  transition: var(--transition-smooth);
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.close-btn:hover {
  color: var(--color-error);
  background: rgba(244, 63, 94, 0.1);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.tutorial-section {
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 16px;
}

.tutorial-section:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.tutorial-section h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.tutorial-section p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-muted);
}

.tutorial-section em {
  color: var(--color-accent);
  font-style: normal;
}

.tutorial-section strong {
  color: var(--text-main);
}

/* Media Queries for Desktop layout */
@media (min-width: 768px) {
  .app-container {
    padding-bottom: 0;
    flex-direction: row;
    height: 100vh;
    overflow: hidden;
  }
  
  header {
    display: none; /* Desktop uses sidebar instead of separate header */
  }

  .nav-bar {
    position: static;
    flex-direction: column;
    width: 240px;
    height: 100%;
    border-top: none;
    border-right: 1px solid var(--glass-border);
    justify-content: flex-start;
    gap: 30px;
    padding: 30px 16px;
    background: var(--bg-secondary);
  }

  .nav-bar::before {
    content: 'BibleMemory';
    font-weight: 800;
    font-size: 24px;
    letter-spacing: -0.5px;
    margin-bottom: 30px;
    text-align: center;
    background: linear-gradient(135deg, var(--text-main), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
  }

  .nav-item {
    flex-direction: row;
    width: 100%;
    gap: 16px;
    padding: 12px 20px;
    border-radius: var(--border-radius-md);
    font-size: 15px;
    justify-content: flex-start;
  }

  .nav-item i {
    font-size: 22px;
  }

  .nav-item.active {
    background: rgba(99, 102, 241, 0.1);
  }

  .nav-item.active i {
    transform: translateX(2px);
  }

  main {
    height: 100vh;
    overflow-y: auto;
    padding: 30px;
    max-width: 960px;
    width: 100%;
  }

  .verses-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-cards-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Desktop overrides for alert popups */
  .alert-popup {
    top: 20px;
    transform: translateX(-50%) translateY(-100px);
  }

  .alert-popup.show {
    transform: translateX(-50%) translateY(0);
  }
}