/* -------------------------------------------------------------
 * CORE DESIGN SYSTEM & THEMES
 * ------------------------------------------------------------- */
:root {
  /* Transition timings */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* Fonts */
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-clock: 'Montserrat', sans-serif;
  --font-handwritten: 'Caveat', cursive;
  --font-mono: 'Share Tech Mono', monospace;
}

/* Theme 1: Midnight (Sleek Dark Mode) */
[data-theme="midnight"] {
  --bg-color: #0c0c0e;
  --text-color: #e4e4e7;
  --text-secondary: #a1a1aa;
  --accent-color: #ffffff;
  --accent-secondary: #27272a;
  --header-bg: rgba(12, 12, 14, 0.75);
  
  /* Timer Specific */
  --card-bg: #18181b;
  --card-text: #f4f4f5;
  --card-border: rgba(255, 255, 255, 0.05);
  --divider-color: #27272a;
  
  /* Notepad / Binder Specific */
  --notebook-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  --notebook-border: 1px solid #27272a;
  --paper-bg: #fcfaf6;
  --paper-text: #2c2a29;
  --paper-line: rgba(30, 144, 255, 0.15);
  --paper-margin: rgba(239, 68, 68, 0.4);
  --spiral-ring: linear-gradient(90deg, #52525b, #a1a1aa, #3f3f46);
  
  /* Glassmorphism */
  --glass-bg: rgba(24, 24, 27, 0.8);
  --glass-border: rgba(255, 255, 255, 0.08);
  --active-preset-bg: rgba(255, 255, 255, 0.08);
  --active-preset-border: rgba(255, 255, 255, 0.2);
  --glow-color: rgba(255, 255, 255, 0.03);
}

/* Theme 2: Cozy Paper (Warm Vintage Sepia) */
[data-theme="cozy-paper"] {
  --bg-color: #ede4d3;
  --text-color: #4a3e3d;
  --text-secondary: #7c6a68;
  --accent-color: #8c6239;
  --accent-secondary: #ebdcb9;
  --header-bg: rgba(237, 228, 211, 0.8);
  
  /* Timer Specific */
  --card-bg: #3e332e;
  --card-text: #ebdcc8;
  --card-border: rgba(0, 0, 0, 0.2);
  --divider-color: #55443d;
  
  /* Notepad / Binder Specific */
  --notebook-shadow: 0 20px 45px rgba(100, 80, 60, 0.25);
  --notebook-border: 1px solid #d4c5b3;
  --paper-bg: #fffbf0;
  --paper-text: #3d352e;
  --paper-line: rgba(139, 69, 19, 0.12);
  --paper-margin: rgba(178, 34, 34, 0.35);
  --spiral-ring: linear-gradient(90deg, #8a8076, #dfd5c6, #6b635a);
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 251, 240, 0.9);
  --glass-border: rgba(140, 98, 57, 0.15);
  --active-preset-bg: rgba(140, 98, 57, 0.08);
  --active-preset-border: rgba(140, 98, 57, 0.3);
  --glow-color: rgba(140, 98, 57, 0.05);
}

/* Theme 3: Forest Rain (Soothing Deep Green) */
[data-theme="forest-rain"] {
  --bg-color: #1a2421;
  --text-color: #eceee9;
  --text-secondary: #8c9b93;
  --accent-color: #52796f;
  --accent-secondary: #2f3e46;
  --header-bg: rgba(26, 36, 33, 0.8);
  
  /* Timer Specific */
  --card-bg: #22302b;
  --card-text: #cad2c5;
  --card-border: rgba(255, 255, 255, 0.04);
  --divider-color: #2f3e46;
  
  /* Notepad / Binder Specific */
  --notebook-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  --notebook-border: 1px solid #2f3e46;
  --paper-bg: #f7f9f7;
  --paper-text: #2f3e46;
  --paper-line: rgba(82, 121, 111, 0.18);
  --paper-margin: rgba(219, 68, 85, 0.4);
  --spiral-ring: linear-gradient(90deg, #4f5d56, #87978d, #3b4640);
  
  /* Glassmorphism */
  --glass-bg: rgba(34, 48, 43, 0.85);
  --glass-border: rgba(82, 121, 111, 0.2);
  --active-preset-bg: rgba(82, 121, 111, 0.15);
  --active-preset-border: rgba(82, 121, 111, 0.4);
  --glow-color: rgba(82, 121, 111, 0.04);
}


/* -------------------------------------------------------------
 * RESET & GENERAL
 * ------------------------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body {
  font-family: var(--font-ui);
  background-color: var(--bg-color);
  color: var(--text-color);
  overflow-x: hidden;
  min-height: 100vh;
  transition: background-color var(--transition-slow), color var(--transition-slow);
  position: relative;
}

.ambient-glow {
  position: absolute;
  top: 50%;
  left: 20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--glow-color) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: -1;
  transition: background var(--transition-slow);
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--accent-secondary);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* -------------------------------------------------------------
 * HEADER
 * ------------------------------------------------------------- */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2.5rem;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--glass-border);
  transition: background-color var(--transition-normal), border var(--transition-normal);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.15em;
}

.logo-dot {
  color: var(--accent-color);
  font-size: 0.85rem;
  animation: pulse-dot 2.5s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.1); text-shadow: 0 0 8px var(--accent-color); }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.header-btn {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  padding: 0.6rem 1rem;
  border-radius: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.header-btn:hover {
  background: var(--active-preset-bg);
  border-color: var(--text-secondary);
  transform: translateY(-1px);
}

.theme-selector {
  display: flex;
  gap: 0.5rem;
  padding: 4px;
  background: var(--active-preset-bg);
  border-radius: 20px;
  border: 1px solid var(--glass-border);
}

.theme-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.theme-dot.active {
  border-color: var(--accent-color);
  transform: scale(1.15);
}

.theme-dot:hover:not(.active) {
  transform: scale(1.08);
}

/* -------------------------------------------------------------
 * AMBIENT SOUND DRAWER
 * ------------------------------------------------------------- */
.sound-panel {
  position: fixed;
  top: 85px;
  right: -350px;
  width: 320px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 16px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.5);
  z-index: 90;
  transition: right var(--transition-normal);
}

.sound-panel.open {
  right: 20px;
}

.sound-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem;
  border-bottom: 1px solid var(--glass-border);
}

.sound-panel-header h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-color);
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.close-btn:hover {
  opacity: 1;
}

.sound-panel-content {
  padding: 1.25rem;
}

.sound-toggle-all {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  font-weight: 500;
  font-size: 0.9rem;
}

/* Switch Styles */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--accent-secondary);
  transition: .3s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 4px;
  bottom: 4px;
  background-color: var(--text-color);
  transition: .3s;
}

input:checked + .slider {
  background-color: var(--accent-color);
}

input:checked + .slider:before {
  transform: translateX(20px);
  background-color: var(--bg-color);
}

.slider.round {
  border-radius: 24px;
}

.slider.round:before {
  border-radius: 50%;
}

.sound-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.sound-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sound-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
}

.sound-info i {
  color: var(--text-secondary);
  width: 16px;
  text-align: center;
}

.sound-control {
  display: flex;
  align-items: center;
}

/* Custom range input styling */
.volume-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--accent-secondary);
  outline: none;
  transition: opacity .2s;
}

.volume-slider:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-color);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.volume-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.sound-tip {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 1rem;
}

.sound-tip i {
  margin-right: 4px;
}

/* -------------------------------------------------------------
 * WORKSPACE & SPLIT VIEW
 * ------------------------------------------------------------- */
.workspace {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2.5rem;
  align-items: center;
  justify-items: center;
  min-height: calc(100vh - 80px);
  transition: var(--transition-slow);
}

/* Focus Mode Layout overrides */
body.focus-mode-active .workspace {
  grid-template-columns: 1fr;
  max-width: 900px;
  padding: 4rem 2rem;
}

body.focus-mode-active #notepad-section {
  display: none;
}

body.focus-mode-active #sound-panel {
  display: none; /* Hide drawer to minimize distractions */
}

/* -------------------------------------------------------------
 * LEFT PANEL: TIMER
 * ------------------------------------------------------------- */
.timer-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
}

.session-presets {
  display: flex;
  background: var(--active-preset-bg);
  border: 1px solid var(--glass-border);
  padding: 4px;
  border-radius: 30px;
  gap: 4px;
  margin-bottom: 3.5rem;
}

.preset-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.6rem 1.25rem;
  border-radius: 25px;
  cursor: pointer;
  transition: all var(--transition-normal);
}

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

.preset-btn.active {
  color: var(--text-color);
  background: var(--active-preset-bg);
  border-color: var(--active-preset-border);
}

/* 3D FLIP CLOCK CONTAINER */
.flip-clock-wrapper {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  justify-items: center;
  gap: 0.5rem;
  margin-bottom: 3.5rem;
  position: relative;
}

.flip-clock-label {
  grid-row: 2;
  font-family: var(--font-ui);
  text-transform: uppercase;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--text-secondary);
  margin-top: 1rem;
}

/* Digital Clock Cards */
.clock-card {
  position: relative;
  width: 220px;
  height: var(--clock-height);
  border-radius: 16px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  display: flex;
  justify-content: center;
  align-items: center;
  --clock-height: 190px;
}

.clock-card span {
  font-family: var(--font-clock);
  font-size: 7.5rem;
  font-weight: 700;
  color: var(--card-text);
  line-height: 1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.clock-card.pop {
  animation: clock-pop var(--transition-fast) forwards;
}

@keyframes clock-pop {
  0% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

.flip-divider {
  font-family: var(--font-clock);
  font-size: 5.5rem;
  color: var(--text-secondary);
  font-weight: 300;
  padding-bottom: 20px;
  align-self: center;
}

/* Controls UI */
.timer-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.control-btn {
  background: var(--accent-color);
  border: none;
  color: var(--bg-color);
  width: 76px;
  height: 76px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3), inset 0 2px 4px rgba(255,255,255,0.2);
  transition: all var(--transition-fast);
}

.control-btn:hover {
  transform: scale(1.06);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.control-btn:active {
  transform: scale(0.96);
}

.control-btn-secondary {
  background: var(--active-preset-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  font-size: 1.15rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.control-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--text-secondary);
  transform: translateY(-1px);
}

.quick-toggles {
  display: flex;
  gap: 1.5rem;
}

.toggle-icon-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 12px;
  transition: all var(--transition-fast);
}

.toggle-icon-btn:hover {
  color: var(--text-color);
  background: var(--active-preset-bg);
}

.toggle-icon-btn.active {
  color: var(--text-color);
  background: var(--active-preset-bg);
  border: 1px solid var(--glass-border);
}

/* -------------------------------------------------------------
 * RIGHT PANEL: DETAILED NOTEPAD
 * ------------------------------------------------------------- */
.notepad-section {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Open Notebook Spine & binder rings */
.notebook {
  display: flex;
  width: 100%;
  max-width: 760px;
  height: 600px;
  border-radius: 14px;
  box-shadow: var(--notebook-shadow);
  border: var(--notebook-border);
  position: relative;
  overflow: visible;
  transition: box-shadow var(--transition-slow), border var(--transition-slow);
}

.notebook-page {
  flex: 1;
  background-color: var(--paper-bg);
  padding: 2.25rem 2rem 2.25rem 2.75rem;
  overflow-y: auto;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transition: background-color var(--transition-slow);
}

.left-page {
  border-radius: 14px 0 0 14px;
  border-right: 1px dashed rgba(0, 0, 0, 0.06);
  /* Rules + left red margin */
  background-image: 
    linear-gradient(90deg, transparent 38px, var(--paper-margin) 38px, var(--paper-margin) 39px, transparent 39px),
    linear-gradient(var(--paper-line) 1px, transparent 1px);
  background-size: 100% auto, 100% 28px;
  background-position: 0 0, 0 10px;
}

.right-page {
  border-radius: 0 14px 14px 0;
  /* Rules + right red margin */
  background-image: 
    linear-gradient(90deg, transparent 38px, var(--paper-margin) 38px, var(--paper-margin) 39px, transparent 39px),
    linear-gradient(var(--paper-line) 1px, transparent 1px);
  background-size: 100% auto, 100% 28px;
  background-position: 0 0, 0 10px;
}

/* Custom visual binder ring slot overlays on pages */
.spiral-binding-overlay-left,
.spiral-binding-overlay-right {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 12px;
  z-index: 8;
  pointer-events: none;
}

.spiral-binding-overlay-left {
  right: 0;
  background: linear-gradient(90deg, transparent, rgba(0,0,0,0.02) 60%, rgba(0,0,0,0.06));
}

.spiral-binding-overlay-right {
  left: 0;
  background: linear-gradient(-90deg, transparent, rgba(0,0,0,0.02) 60%, rgba(0,0,0,0.06));
}

/* Metal spine ring */
.spiral-spine {
  position: absolute;
  top: 15px;
  bottom: 15px;
  left: 50%;
  width: 20px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  z-index: 15;
  pointer-events: none;
}

.ring {
  width: 12px;
  height: 28px;
  background: var(--spiral-ring);
  border-radius: 5px;
  box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.2), inset -1px -1px 2px rgba(0, 0, 0, 0.3);
  margin: 2px 0;
}

/* Page Headers */
.page-header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
}

.right-page-header {
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.notebook-title {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  color: var(--paper-text);
  opacity: 0.8;
}

.current-date {
  font-family: var(--font-handwritten);
  font-size: 1.5rem;
  color: var(--paper-text);
  opacity: 0.75;
  transform: rotate(-1.5deg);
}

.clear-all-btn {
  background: transparent;
  border: none;
  color: var(--paper-text);
  opacity: 0.5;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.clear-all-btn:hover {
  opacity: 0.9;
  background: rgba(0,0,0,0.05);
}

/* Common Lined Inputs & Textarea */
.notepad-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.notebook-subheading {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--paper-text);
  opacity: 0.6;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.text-gold {
  color: #d4af37;
}

.notepad-lined-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-handwritten);
  font-size: 1.6rem;
  color: var(--paper-text);
  line-height: 28px;
  height: 28px;
  padding: 0 0 0 1.25rem;
}

.notepad-lined-input::placeholder,
.notebook-textarea::placeholder {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  opacity: 0.4;
  color: var(--paper-text);
  letter-spacing: 0;
  transform: translateY(-2px);
}

/* Priority list */
.priority-items {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.priority-item {
  display: flex;
  align-items: center;
  height: 28px;
  margin-bottom: 2px;
}

.priority-num {
  font-family: var(--font-handwritten);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--paper-text);
  opacity: 0.5;
  width: 15px;
  text-align: center;
}

.priority-input {
  flex: 1;
}

/* Free Text Box */
.note-area-group {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.notebook-textarea {
  width: 100%;
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font-handwritten);
  font-size: 1.55rem;
  color: var(--paper-text);
  line-height: 28px;
  padding: 0 0 0 1.25rem;
  background-image: linear-gradient(var(--paper-line) 1px, transparent 1px);
  background-size: 100% 28px;
}

/* DYNAMIC TASK CHECKLIST (RIGHT PAGE) */
.task-checklist-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  flex: 1;
}

.task-form {
  display: flex;
  border-bottom: 1.5px solid var(--paper-text);
  padding-bottom: 4px;
  margin-left: 1.25rem;
}

.task-form input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-handwritten);
  font-size: 1.5rem;
  color: var(--paper-text);
  padding: 0;
}

.task-form input::placeholder {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  opacity: 0.4;
}

.add-task-btn {
  background: transparent;
  border: none;
  color: var(--paper-text);
  opacity: 0.7;
  cursor: pointer;
  padding: 4px;
  font-size: 1rem;
  transition: opacity var(--transition-fast);
}

.add-task-btn:hover {
  opacity: 1;
}

.task-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-left: 1.25rem;
}

.task-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 28px;
  margin-bottom: 2px;
  group-hover: show;
}

.task-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
}

/* Styled real handwriting checkbox */
.todo-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--paper-text);
  border-radius: 4px;
  cursor: pointer;
  position: relative;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.todo-checkbox:hover {
  opacity: 1;
}

.todo-checkbox:checked {
  opacity: 0.8;
}

/* Handwritten scribble-like cross tick */
.todo-checkbox:checked::before {
  content: "✓";
  position: absolute;
  top: -4px;
  left: 2px;
  font-family: var(--font-handwritten);
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--paper-text);
}

.task-text {
  font-family: var(--font-handwritten);
  font-size: 1.55rem;
  color: var(--paper-text);
  line-height: 28px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 250px;
}

.task-list-item.completed .task-text {
  text-decoration: line-through;
  text-decoration-thickness: 1.5px;
  opacity: 0.45;
}

.delete-task-btn {
  background: transparent;
  border: none;
  color: var(--paper-text);
  opacity: 0;
  cursor: pointer;
  padding: 4px;
  font-size: 0.85rem;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.task-list-item:hover .delete-task-btn {
  opacity: 0.4;
}

.delete-task-btn:hover {
  opacity: 0.9 !important;
  color: #ef4444;
}

/* -------------------------------------------------------------
 * TIMERS SETTINGS MODAL
 * ------------------------------------------------------------- */
.modal-backdrop {
  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;
  opacity: 0;
  pointer-events: none;
  z-index: 1000;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  width: 90%;
  max-width: 420px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
  transform: translateY(20px);
  transition: transform var(--transition-normal);
  overflow: hidden;
}

.modal-backdrop.open .modal {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--glass-border);
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.setting-row label {
  font-size: 0.9rem;
  font-weight: 500;
}

.setting-row input[type="number"] {
  background: var(--accent-secondary);
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  width: 90px;
  outline: none;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  text-align: center;
}

.alert-volume-row {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  border-top: 1px solid var(--glass-border);
  padding-top: 1rem;
}

.slider-val-wrapper {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 1rem;
}

.slider-val-wrapper input[type="range"] {
  flex: 1;
}

.slider-val-wrapper span {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  width: 40px;
  text-align: right;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: flex-end;
}

.modal-btn-save {
  background: var(--accent-color);
  border: none;
  color: var(--bg-color);
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.modal-btn-save:hover {
  opacity: 0.9;
}

/* Congratulations Card Styles */
.congrats-card {
  max-width: 450px;
  border-radius: 24px;
  text-align: center;
}

.congrats-banner {
  height: 140px;
  background: linear-gradient(135deg, var(--accent-secondary) 0%, rgba(255, 255, 255, 0.03) 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid var(--glass-border);
}

.congrats-emoji {
  font-size: 4.5rem;
  animation: emoji-bounce 1.5s infinite alternate ease-in-out;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.15));
}

@keyframes emoji-bounce {
  0% { transform: translateY(8px) scale(0.92) rotate(-5deg); }
  100% { transform: translateY(-12px) scale(1.08) rotate(5deg); }
}

.congrats-body {
  padding: 2.25rem 2rem 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.congrats-body h2 {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1.75rem;
  color: var(--text-color);
  letter-spacing: -0.01em;
}

.congrats-message {
  font-family: var(--font-ui);
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.congrats-stats {
  display: flex;
  justify-content: center;
  margin-bottom: 0.5rem;
}

.stat-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--active-preset-bg);
  border: 1px solid var(--active-preset-border);
  padding: 0.6rem 1.25rem;
  border-radius: 25px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-color);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.stat-badge i {
  color: #ffcc00;
}

.congrats-footer {
  border-top: none;
  justify-content: center;
  padding: 0 2rem 2.25rem 2rem;
}

.congrats-close-btn {
  background: var(--accent-color);
  border: none;
  color: var(--bg-color);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.8rem 2.5rem;
  border-radius: 30px;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  transition: all var(--transition-fast);
}

.congrats-close-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.35);
}

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

/* Custom Background Wallpaper Overlay */
.custom-bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -2;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.custom-bg-overlay.visible {
  opacity: 0.18; /* Blends beautifully with active theme background */
}

/* Google Authentication Styling */
.auth-wrapper {
  display: flex;
  align-items: center;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--accent-color);
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.user-name {
  font-size: 0.85rem;
  font-weight: 600;
  max-width: 110px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.logout-btn {
  background: transparent;
  border: none;
  color: var(--text-color);
  opacity: 0.7;
  cursor: pointer;
  font-size: 1rem;
  padding: 4px;
  transition: all var(--transition-fast);
}

.logout-btn:hover {
  opacity: 1;
  transform: scale(1.1);
  color: #ef4444; /* red indicator on hover */
}

/* Background Wallpaper Upload UI */
.bg-upload-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.bg-upload-label {
  background: var(--active-preset-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}

.bg-upload-label:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--text-secondary);
}

.bg-remove-btn {
  background: transparent;
  border: none;
  color: #ef4444;
  cursor: pointer;
  padding: 6px;
  font-size: 0.9rem;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.bg-remove-btn:hover {
  opacity: 0.8;
  transform: scale(1.06);
}

.bg-status-text {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.hidden {
  display: none !important;
}

/* Sign Out Confirmation Modal Styling */
.confirm-card {
  max-width: 380px;
  border-radius: 16px;
  text-align: center;
}

.confirm-body {
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.confirm-body .warn-icon {
  font-size: 2.8rem;
  color: #ffffff;
  animation: pulse-warn 1.5s infinite;
}

@keyframes pulse-warn {
  0% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.06); opacity: 1; }
  100% { transform: scale(1); opacity: 0.8; }
}

.confirm-body p {
  font-family: var(--font-ui);
  font-size: 1.05rem;
  color: var(--text-color);
  line-height: 1.4;
}

.confirm-footer {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  border-top: 1px solid var(--glass-border);
  padding: 1rem 1.5rem;
}

.modal-btn-cancel {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-ui);
  font-weight: 500;
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}

.modal-btn-cancel:hover {
  background: var(--active-preset-bg);
  border-color: var(--text-secondary);
}

.modal-btn-confirm {
  background: #ef4444;
  border: none;
  color: #ffffff;
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.85rem;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
  transition: all var(--transition-fast);
}

.modal-btn-confirm:hover {
  opacity: 0.9;
  box-shadow: 0 6px 16px rgba(239, 68, 68, 0.35);
  transform: translateY(-1px);
}

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

/* -------------------------------------------------------------
 * RESPONSIVENESS & MEDIA QUERIES
 * ------------------------------------------------------------- */
@media (max-width: 1100px) {
  .workspace {
    grid-template-columns: 1fr;
    gap: 4rem;
    padding: 2.5rem 1.5rem;
  }
  
  .notebook {
    max-width: 100%;
    height: 520px;
  }
}

@media (max-width: 768px) {
  header {
    padding: 1rem 1.25rem;
  }
  
  .btn-text {
    display: none;
  }
  
  .header-btn {
    padding: 0.5rem;
  }
  
  /* Notebook turns into vertical scroll pages */
  .notebook {
    flex-direction: column;
    height: auto;
    background: transparent;
    border: none;
    box-shadow: none;
  }
  
  .notebook-page {
    border-radius: 12px;
    height: 480px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    border: var(--notebook-border);
    margin-bottom: 2rem;
  }
  
  .left-page {
    border-right: none;
  }
  
  .spiral-spine {
    display: none; /* Hide spine on mobile stacked layout */
  }
  
  .spiral-binding-overlay-left,
  .spiral-binding-overlay-right {
    display: none;
  }
  
  .clock-card {
    width: 160px;
    --clock-height: 140px;
  }
  
  .clock-card span {
    font-size: 5.5rem;
  }
  
  .flip-divider {
    font-size: 3.5rem;
  }
}

@media (max-width: 480px) {
  .clock-card {
    width: 130px;
    --clock-height: 110px;
  }
  
  .clock-card span {
    font-size: 4.2rem;
  }
  
  .flip-divider {
    font-size: 2.5rem;
  }
}

/* -------------------------------------------------------------
 * PLAIN NOTEBOOK MODAL & TEXTAREA
 * ------------------------------------------------------------- */
.notebook-card {
  max-width: 800px;
  width: 90%;
  height: 80vh;
  display: flex;
  flex-direction: column;
}

.notebook-modal-body {
  flex: 1;
  padding: 0;
  display: flex;
  overflow: hidden;
}

/* Slidable Pages Carousel */
.notebook-pagination {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: 2rem;
}

.page-nav-btn {
  background: none;
  border: none;
  color: var(--text-color);
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.page-nav-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: scale(1.05);
}

.page-nav-btn:active {
  transform: scale(0.95);
}

.page-indicator {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-color);
  min-width: 70px;
  text-align: center;
  font-family: var(--font-ui);
}

.pages-wrapper {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
  border-radius: 0 0 16px 16px;
}

.pages-container {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform var(--transition-slow);
}

.notebook-page-slide {
  flex: 0 0 100%;
  height: 100%;
  background: var(--paper-bg);
  transition: background var(--transition-slow);
}

.plain-notebook-textarea {
  width: 100%;
  height: 100%;
  border: none;
  outline: none;
  padding: 2.5rem;
  background: transparent;
  color: var(--paper-text);
  font-family: var(--font-ui);
  font-size: 1.15rem;
  line-height: 1.7;
  resize: none;
  overflow: hidden; /* Slidable pages are not scrollable! */
  transition: color var(--transition-slow);
}

/* Sync indicator in header */
.sync-status {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-left: auto;
  margin-right: 1.25rem;
  opacity: 0.85;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.sync-status.syncing {
  color: #ff9500;
  animation: pulse-sync 1.5s infinite;
}

@keyframes pulse-sync {
  0% { opacity: 0.5; }
  50% { opacity: 1; }
  100% { opacity: 0.5; }
}

/* -------------------------------------------------------------
 * FOCUS TRACKER MODAL & CALENDAR
 * ------------------------------------------------------------- */
.tracker-card {
  max-width: 500px;
  width: 90%;
  display: flex;
  flex-direction: column;
}

.tracker-modal-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem;
}

.tracker-summary {
  display: flex;
  gap: 1rem;
}

.summary-stat {
  flex: 1;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.summary-stat .stat-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-color);
  font-family: var(--font-clock);
  letter-spacing: -0.02em;
}

.summary-stat .stat-lbl {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* Calendar Widget */
.calendar-widget {
  background: rgba(0, 0, 0, 0.12);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.1);
}

.calendar-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cal-month-year {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-color);
  font-family: var(--font-ui);
}

.cal-nav-btn {
  background: none;
  border: none;
  color: var(--text-color);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.cal-nav-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: scale(1.05);
}

.cal-nav-btn:active {
  transform: scale(0.95);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.5rem;
  row-gap: 0.6rem;
  text-align: center;
}

.cal-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-color);
  position: relative;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.cal-day.empty {
  visibility: hidden;
  pointer-events: none;
}

.cal-day:not(.empty) {
  cursor: pointer;
}

.cal-day:not(.empty):hover {
  background: rgba(255, 255, 255, 0.06);
}

.cal-day.today {
  box-shadow: inset 0 0 0 1.5px var(--text-color);
}

.cal-day.active-day {
  background: var(--accent-color);
  color: var(--bg-color);
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.cal-day.active-day::after {
  content: '';
  position: absolute;
  bottom: 4px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.8;
}

/* -------------------------------------------------------------
 * AUTH GATE MODAL & STYLING
 * ------------------------------------------------------------- */
.auth-gate-card {
  max-width: 400px;
  width: 90%;
  text-align: center;
  border-radius: 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.7);
}

.auth-gate-body {
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.lock-shield-icon {
  font-size: 3.5rem;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
  animation: pulse-shield 2s infinite;
}

@keyframes pulse-shield {
  0% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.08); opacity: 1; text-shadow: 0 0 15px var(--accent-color); }
  100% { transform: scale(1); opacity: 0.9; }
}

.auth-gate-body h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-color);
}

.auth-gate-body p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1rem;
}

.auth-gate-login-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.9rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 12px;
  background: #ffffff;
  color: #121214 !important;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.auth-gate-login-btn:hover {
  background: #f4f4f5;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.auth-gate-login-btn i {
  font-size: 1.15rem;
}

/* -------------------------------------------------------------
 * AMBIENT TRACKS PANEL
 * ------------------------------------------------------------- */
.ambient-tracks-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1.5rem;
  width: 100%;
  max-width: 440px;
  margin-top: 2rem;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ambient-tracks-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ambient-tracks-title i {
  font-size: 1rem;
  opacity: 0.9;
}

/* Admin Upload Form */
.admin-upload-widget {
  background: rgba(255, 255, 255, 0.02);
  border: 1.5px dashed var(--glass-border);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.admin-upload-widget h5 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.admin-upload-form {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.admin-upload-form input[type="text"] {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  color: var(--text-color);
  font-size: 0.9rem;
  outline: none;
  font-family: var(--font-ui);
}

.track-file-label {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 0.5rem;
  font-size: 0.85rem;
  text-align: center;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-color);
  transition: background var(--transition-fast);
}

.track-file-label:hover {
  background: rgba(255, 255, 255, 0.1);
}

.upload-submit-btn {
  background: var(--accent-color);
  color: var(--bg-color);
  font-weight: 600;
  border-radius: 8px;
  border: none;
  padding: 0.55rem;
  font-size: 0.9rem;
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.upload-submit-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.upload-progress-text {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Tracks List */
.tracks-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
  padding-right: 4px;
}

/* Thin Scrollbar for tracks list */
.tracks-list::-webkit-scrollbar {
  width: 4px;
}
.tracks-list::-webkit-scrollbar-track {
  background: transparent;
}
.tracks-list::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 2px;
}

.no-tracks {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
  padding: 1rem;
}

.track-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  padding: 0.6rem 0.85rem;
  transition: all var(--transition-fast);
}

.track-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.track-item.active-track {
  border-color: var(--accent-color);
  background: rgba(255, 255, 255, 0.07);
}

.track-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  flex: 1;
}

.track-play-btn {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.track-item:hover .track-play-btn {
  background: var(--accent-color);
  color: var(--bg-color);
}

.track-item.active-track .track-play-btn {
  background: var(--accent-color);
  color: var(--bg-color);
}

.track-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-color);
}

.track-delete-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  font-size: 0.85rem;
  opacity: 0.6;
  transition: all var(--transition-fast);
}

.track-delete-btn:hover {
  opacity: 1;
  color: #ef4444;
  transform: scale(1.1);
}

/* Volume Slider */
.track-volume-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.track-volume-control input[type="range"] {
  flex: 1;
  accent-color: var(--accent-color);
  height: 4px;
  cursor: pointer;
}

/* Active Session Title & Log Card Styles */
.active-session-title-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  animation: fadeIn var(--transition-normal);
}

.active-session-title-display.hidden {
  display: none !important;
}

.active-session-tag {
  color: var(--text-secondary);
  font-weight: 500;
}

.active-session-text {
  color: var(--accent-color);
  font-weight: 600;
}

.sessions-list::-webkit-scrollbar {
  width: 4px;
}
.sessions-list::-webkit-scrollbar-track {
  background: transparent;
}
.sessions-list::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 2px;
}

.session-log-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  transition: all var(--transition-fast);
}

.session-log-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

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

.session-log-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-color);
}

.session-log-duration {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--bg-color);
  background: var(--accent-color);
  padding: 0.2rem 0.5rem;
  border-radius: 12px;
}

.session-log-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.session-log-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.session-delete-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  font-size: 0.85rem;
  opacity: 0.6;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.session-delete-btn:hover {
  opacity: 1;
  color: #ef4444;
  transform: scale(1.1);
}