/* ============================================================
   ROOT & RESET
   ============================================================ */
:root {
  --font: 'Inter', sans-serif;
  --c-text: #1a202c;
  --c-sub: #4a5568;
  --c-muted: #a0aec0;
  --c-accent: #667eea;
  --c-accent-dk: #5a67d8;
  --c-urgent: #fc8181;
  --c-urgent-bg: rgba(252,129,129,0.12);
  --c-glass: rgba(255,255,255,0.78);
  --c-glass-border: rgba(255,255,255,0.6);
  --c-glass-strong: rgba(255,255,255,0.94);
  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 26px;
  --shadow: 0 8px 32px rgba(0,0,0,0.06);
  --shadow-md: 0 16px 48px rgba(0,0,0,0.1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { width: 100%; height: 100%; overflow: hidden; }
body {
  font-family: var(--font);
  color: var(--c-text);
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
}

/* ============================================================
   BACKGROUND — Animated time-based gradients
   ============================================================ */
@keyframes bgShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Dawn 4-7 */
.bg-dawn {
  background: linear-gradient(-45deg, #DCEBFF, #E9E4FF, #F5EFFF, #D8E8FF);
  background-size: 300% 300%;
  animation: bgShift 22s ease infinite;
}
/* Day 7-15 */
.bg-day {
  background: linear-gradient(-45deg, #FFF8D6, #E8F7FF, #EAFBEA, #FFF0B3);
  background-size: 300% 300%;
  animation: bgShift 26s ease infinite;
}
/* Afternoon 15-18 */
.bg-afternoon {
  background: linear-gradient(-45deg, #FFE4EC, #FFF1CC, #FFE8D6, #FFCCE0);
  background-size: 300% 300%;
  animation: bgShift 20s ease infinite;
}
/* Sunset 18-21 */
.bg-sunset {
  background: linear-gradient(-45deg, #FFD9C0, #FFBFA3, #E6C7FF, #C5AEFF);
  background-size: 300% 300%;
  animation: bgShift 18s ease infinite;
}
/* Night 21-4 */
.bg-night {
  background: linear-gradient(-45deg, #1E2A38, #2C3E50, #3A4A6A, #263550);
  background-size: 300% 300%;
  animation: bgShift 30s ease infinite;
}

#bg-layer {
  position: fixed; inset: 0; z-index: 0;
  /* class applied by JS */
}
.bg-overlay {
  position: fixed; inset: 0; z-index: 1;
  background: rgba(255,255,255,0.18);
  pointer-events: none;
}
/* Night overlay — slightly darker tint to protect readability */
.night-mode .bg-overlay {
  background: rgba(0,0,0,0.15);
}

/* ============================================================
   SCREEN SYSTEM
   ============================================================ */
.screen {
  position: absolute; inset: 0; z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  transition: opacity 0.55s cubic-bezier(0.4,0,0.2,1), transform 0.55s cubic-bezier(0.4,0,0.2,1);
}
.screen.hidden {
  opacity: 0 !important;
  transform: translateX(60px) !important;
  pointer-events: none !important;
}
.screen.slide-out {
  opacity: 0; transform: translateX(-60px);
}

/* ============================================================
   GLASS SURFACE
   ============================================================ */
.glass {
  background: var(--c-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
}

/* ============================================================
   BUTTONS — BASE
   ============================================================ */
button { font-family: var(--font); cursor: pointer; border: none; outline: none; }

.btn-cta {
  background: var(--c-accent);
  color: #fff;
  padding: 0.85rem 2.2rem;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 14px rgba(102,126,234,0.35);
}
.btn-cta:hover { background: var(--c-accent-dk); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(102,126,234,0.45); }
.btn-cta:active { transform: translateY(0); }
.btn-cta.small { padding: 0.6rem 1.5rem; font-size: 0.9rem; }

.btn-back {
  background: transparent;
  color: var(--c-sub);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem;
  transition: color 0.2s;
}
.btn-back:hover { color: var(--c-text); }

.icon-pill {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--c-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--c-glass-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--c-sub);
  transition: color 0.2s, transform 0.2s, background 0.2s;
}
.icon-pill:hover { color: var(--c-text); transform: scale(1.08); }
.icon-pill.active { background: var(--c-accent); color: #fff; border-color: transparent; }

/* ============================================================
   SCREEN 1: WELCOME
   ============================================================ */
.welcome-content {
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 1.5rem; max-width: 380px;
}
.welcome-icon {
  width: 80px; height: 80px;
  display: flex; align-items: center; justify-content: center;
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: 50%;
  color: var(--c-accent);
  box-shadow: var(--shadow);
  animation: float 4s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}
.welcome-title { font-size: 3rem; font-weight: 700; letter-spacing: -1.5px; line-height: 1.1; }
.welcome-subtitle { font-size: 1.1rem; color: var(--c-sub); font-weight: 400; }

/* ============================================================
   SCREEN 2: TIME SELECTION
   ============================================================ */
.time-selection-content {
  display: flex; flex-direction: column; align-items: center;
  gap: 1.8rem; width: 100%; max-width: 420px;
}
.step-label { font-size: 0.78rem; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; color: var(--c-muted); }
.screen-title { font-size: 2rem; font-weight: 700; letter-spacing: -0.8px; text-align: center; }
.screen-sub { font-size: 0.95rem; color: var(--c-sub); text-align: center; }

.time-picker-card { width: 100%; padding: 2rem; }
.time-display-row {
  display: flex; align-items: center; justify-content: center; gap: 1rem;
}
.time-field {
  display: flex; flex-direction: column; align-items: center; gap: 0.6rem;
}
.time-field label { font-size: 0.75rem; font-weight: 500; text-transform: uppercase; letter-spacing: 1px; color: var(--c-muted); }
.time-spinner { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; }
.time-val { font-size: 3.5rem; font-weight: 700; letter-spacing: -2px; line-height: 1; font-variant-numeric: tabular-nums; }
.time-colon { font-size: 3rem; font-weight: 300; color: var(--c-muted); margin-top: 1.5rem; }
.spin-btn {
  width: 32px; height: 32px;
  background: rgba(102,126,234,0.1);
  border-radius: 50%; color: var(--c-accent);
  font-size: 0.7rem; display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, transform 0.15s;
}
.spin-btn:hover { background: rgba(102,126,234,0.2); transform: scale(1.1); }
.spin-btn:active { transform: scale(0.95); }

.time-presets { margin-top: 1.75rem; }
.preset-label { font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--c-muted); display: block; margin-bottom: 0.7rem; }
.preset-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.preset-btn {
  padding: 0.45rem 0.9rem;
  border-radius: 20px;
  font-size: 0.85rem;
  background: rgba(102,126,234,0.08);
  color: var(--c-sub);
  border: 1px solid transparent;
  transition: all 0.2s;
}
.preset-btn:hover { background: rgba(102,126,234,0.15); color: var(--c-text); }
.preset-btn.active { background: var(--c-accent); color: #fff; box-shadow: 0 2px 8px rgba(102,126,234,0.3); }

.nav-row { display: flex; align-items: center; justify-content: space-between; width: 100%; }

/* ============================================================
   SCREEN 3: PLANNING
   ============================================================ */
#screen-plan {
  align-items: flex-start;
  justify-content: flex-start;
  padding: 0;
  overflow-y: auto;
  flex-direction: column;
}
#screen-plan::-webkit-scrollbar { display: none; }

.plan-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.2rem 1.5rem;
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  width: 100%;
}
.topbar-right { display: flex; gap: 0.6rem; }

/* Hero */
.plan-hero {
  width: calc(100% - 3rem);
  margin: 0 1.5rem 1rem;
  padding: 1.8rem;
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 0.4rem;
}
.hero-eyebrow {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase;
  color: var(--c-muted);
}
.hero-time {
  font-size: clamp(3rem, 10vw, 5rem);
  font-weight: 700; letter-spacing: -3px; line-height: 1;
  background: linear-gradient(135deg, var(--c-accent), #9f7aea);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-cutoff {
  font-size: 0.9rem; color: var(--c-sub);
  display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; justify-content: center;
}
.cutoff-badge {
  font-weight: 700; color: var(--c-text);
  background: rgba(102,126,234,0.1);
  padding: 0.15rem 0.55rem; border-radius: 20px;
}
.inline-edit-btn {
  font-size: 0.75rem; padding: 0.15rem 0.55rem; border-radius: 20px;
  background: rgba(0,0,0,0.05);
  border: 1px solid rgba(0,0,0,0.08);
  color: var(--c-sub); cursor: pointer;
  transition: background 0.2s;
}
.inline-edit-btn:hover { background: rgba(0,0,0,0.1); }
.hero-message {
  font-size: 0.85rem; color: var(--c-muted);
  min-height: 1.2em;
}

/* Add Activity Card */
.add-activity-card {
  width: calc(100% - 3rem); margin: 0 1.5rem 1rem;
  padding: 1.4rem;
}
.card-label { font-size: 1rem; font-weight: 600; margin-bottom: 1rem; color: var(--c-text); }
.add-row {
  display: flex; gap: 0.5rem; align-items: center;
  background: rgba(255,255,255,0.5); border-radius: var(--r-md);
  padding: 0.5rem; border: 1px solid rgba(0,0,0,0.05);
  flex-wrap: wrap;
}
.task-input {
  flex: 1; min-width: 140px; border: none; background: transparent; outline: none;
  font-family: var(--font); font-size: 0.95rem; padding: 0.4rem 0.5rem; color: var(--c-text);
}
.task-input::placeholder { color: var(--c-muted); }
.dur-group { display: flex; align-items: center; }
.dur-input {
  width: 42px; border: none; background: transparent; outline: none;
  font-family: var(--font); font-size: 0.95rem; font-weight: 600; text-align: center;
  color: var(--c-text); -moz-appearance: textfield;
}
.dur-input::-webkit-outer-spin-button, .dur-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.dur-label { font-size: 0.85rem; color: var(--c-muted); }

.urgent-dot {
  width: 30px; height: 30px; border-radius: 50%;
  background: rgba(252,129,129,0.15);
  color: var(--c-urgent);
  font-weight: 700; font-size: 1rem;
  border: 1.5px solid rgba(252,129,129,0.3);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.urgent-dot.active { background: var(--c-urgent); color: #fff; border-color: var(--c-urgent); }

.btn-add-task {
  background: var(--c-accent); color: #fff;
  padding: 0.55rem 1.1rem; border-radius: var(--r-sm);
  font-weight: 600; font-size: 0.9rem;
  transition: background 0.2s, transform 0.15s;
}
.btn-add-task:hover { background: var(--c-accent-dk); transform: scale(1.03); }
.btn-add-task:active { transform: scale(0.98); }

.quick-row {
  display: flex; flex-wrap: wrap; gap: 0.45rem; align-items: center; margin-top: 0.85rem;
}
.quick-label { font-size: 0.75rem; color: var(--c-muted); font-weight: 500; }
.chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 0.35rem 0.75rem; border-radius: 20px; font-size: 0.77rem; font-weight: 500;
  background: rgba(255,255,255,0.5); border: 1px solid rgba(0,0,0,0.07);
  color: var(--c-sub); cursor: pointer; transition: all 0.2s;
}
.chip:hover { background: rgba(255,255,255,0.9); color: var(--c-text); transform: translateY(-1px); }
.chip.urgent-chip { border-color: rgba(252,129,129,0.3); }

/* Timeline */
.timeline-section {
  width: calc(100% - 3rem); margin: 0 1.5rem 3rem;
}
.timeline-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.8rem;
}
.timeline-title { font-size: 1rem; font-weight: 600; }
.timeline-count { font-size: 0.8rem; color: var(--c-muted); }

.empty-state {
  text-align: center; padding: 2rem;
  color: var(--c-muted); font-size: 0.9rem;
}

/* Task row */
.task-row {
  background: var(--c-glass);
  border: 1px solid var(--c-glass-border);
  border-radius: var(--r-md);
  padding: 0.9rem 1rem;
  margin-bottom: 0.6rem;
  display: flex; align-items: center; gap: 0.9rem;
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.task-row::before {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; border-radius: 3px 0 0 3px;
  background: var(--c-accent);
  transform: scaleY(0);
  transition: transform 0.25s;
}
.task-row.active::before { transform: scaleY(1); }
.task-row.active {
  background: rgba(255,255,255,0.96);
  box-shadow: 0 4px 20px rgba(102,126,234,0.12);
  transform: translateY(-1px);
}
.task-row.urgent-task {
  background: var(--c-urgent-bg);
  border-color: rgba(252,129,129,0.25);
}
.task-row.urgent-task::before { background: var(--c-urgent); }

.task-progress-bar {
  position: absolute; bottom: 0; left: 0; height: 2px;
  background: linear-gradient(90deg, var(--c-accent), #9f7aea);
  border-radius: 0 2px 2px 0;
  width: 0%; transition: width 0.5s;
}

.play-btn {
  width: 38px; height: 38px; border-radius: 50%; flex-shrink: 0;
  background: rgba(102,126,234,0.1);
  border: 1.5px solid rgba(102,126,234,0.2);
  color: var(--c-accent);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.play-btn:hover { background: var(--c-accent); color: #fff; transform: scale(1.05); }
.task-row.active .play-btn { background: var(--c-accent); color: #fff; }
.task-row.urgent-task .play-btn { border-color: rgba(252,129,129,0.3); color: var(--c-urgent); }
.task-row.urgent-task.active .play-btn { background: var(--c-urgent); color: #fff; }

.task-body { flex: 1; display: flex; flex-direction: column; gap: 0.15rem; }
.task-name-text { font-weight: 500; font-size: 0.95rem; }
.task-meta-text { font-size: 0.78rem; color: var(--c-muted); display: flex; gap: 0.8rem; }
.timer-num { font-variant-numeric: tabular-nums; font-weight: 600; }

/* Task action buttons — ALWAYS VISIBLE */
.task-right { display: flex; gap: 0.4rem; opacity: 1; transition: opacity 0.2s; }
.tiny-btn {
  width: 30px; height: 30px; border-radius: 50%; background: transparent;
  border: 1px solid rgba(0,0,0,0.1); color: var(--c-muted);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem; font-weight: 600; transition: all 0.2s; cursor: pointer;
}
.tiny-btn:hover { background: rgba(0,0,0,0.06); color: var(--c-text); transform: scale(1.08); }
.tiny-btn:active { transform: scale(0.95); }
/* ✓ complete button */
.tiny-btn.done-btn { color: #68d391; border-color: rgba(72,187,120,0.3); }
.tiny-btn.done-btn:hover { background: rgba(72,187,120,0.15); color: #38a169; border-color: #68d391; }
/* ✕ delete button */
.tiny-btn.del-btn { color: var(--c-muted); }
.tiny-btn.del-btn:hover { background: rgba(252,129,129,0.12); color: var(--c-urgent); border-color: rgba(252,129,129,0.3); }

/* ============================================================
   INSIGHTS PANEL
   ============================================================ */
.side-panel {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(380px, 100%);
  z-index: 100;
  background: var(--c-glass-strong);
  backdrop-filter: blur(40px);
  border-left: 1px solid var(--c-glass-border);
  display: flex; flex-direction: column;
  transform: translateX(0);
  transition: transform 0.45s cubic-bezier(0.16,1,0.3,1);
  box-shadow: -8px 0 40px rgba(0,0,0,0.06);
}
.side-panel.hidden { transform: translateX(105%); }

.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem 1.5rem;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}
.panel-head h2 { font-size: 1.1rem; font-weight: 600; }
.panel-body { padding: 1.5rem; display: flex; flex-direction: column; gap: 1.5rem; flex: 1; overflow-y: auto; }

.day-chips { display: flex; gap: 0.6rem; overflow-x: auto; padding-bottom: 0.3rem; }
.day-chips::-webkit-scrollbar { display: none; }
.day-chip {
  padding: 0.65rem 1rem; border-radius: var(--r-md);
  background: rgba(255,255,255,0.5);
  border: 1px solid transparent; min-width: 70px; text-align: center;
  cursor: pointer; transition: all 0.2s;
}
.day-chip .chip-day { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.8px; color: var(--c-muted); }
.day-chip.selected { background: #fff; border-color: var(--c-accent); box-shadow: var(--shadow); }
.day-chip.selected .chip-day { color: var(--c-accent); }

.bar-section { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.bar-section h4 { font-weight: 500; color: var(--c-sub); }
.bar-track {
  width: 56px; height: 280px;
  border-radius: 28px; background: rgba(0,0,0,0.04);
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; justify-content: flex-end;
}
.bar-fill {
  width: 100%; background: linear-gradient(180deg, #9f7aea, var(--c-accent));
  border-radius: 28px; min-height: 6px;
  height: 0%; transition: height 0.6s cubic-bezier(0.34,1.56,0.64,1);
}
.bar-stat { font-size: 0.9rem; font-weight: 500; color: var(--c-sub); }

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.15);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.3s;
}
.modal-overlay.hidden { opacity: 0; pointer-events: none; }
.modal-box {
  width: 320px; padding: 2rem;
  display: flex; flex-direction: column; gap: 1.2rem;
  animation: pop 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes pop { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal-box h3 { font-size: 1.05rem; font-weight: 600; }
.modal-box input[type="time"] {
  width: 100%; padding: 0.75rem 1rem; border-radius: var(--r-sm);
  border: 1.5px solid rgba(102,126,234,0.3);
  font-family: var(--font); font-size: 1.1rem; outline: none;
  background: rgba(255,255,255,0.6);
  transition: border-color 0.2s;
}
.modal-box input[type="time"]:focus { border-color: var(--c-accent); }
.modal-btns { display: flex; justify-content: flex-end; gap: 0.75rem; }
.btn-cancel {
  background: transparent; color: var(--c-sub); font-size: 0.9rem;
  font-weight: 500; padding: 0.55rem 1rem; border-radius: 8px;
  transition: background 0.2s;
}
.btn-cancel:hover { background: rgba(0,0,0,0.05); }

/* ============================================================
   LANGUAGE TOGGLE BUTTON
   ============================================================ */
.lang-btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 0.3rem 0.65rem; border-radius: 20px;
  background: var(--c-glass); border: 1px solid var(--c-glass-border);
  backdrop-filter: blur(12px);
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.5px;
  color: var(--c-sub); cursor: pointer;
  transition: all 0.2s;
}
.lang-btn:hover { color: var(--c-text); background: rgba(255,255,255,0.9); }

/* Night mode text adjustments */
.night-mode .welcome-title,
.night-mode .screen-title,
.night-mode .time-val,
.night-mode .hero-eyebrow { color: rgba(255,255,255,0.95); }
.night-mode .welcome-subtitle,
.night-mode .screen-sub,
.night-mode .hero-cutoff,
.night-mode .hero-message,
.night-mode .step-label,
.night-mode .preset-label { color: rgba(255,255,255,0.65); }
.night-mode .hero-time {
  background: linear-gradient(135deg, #a5b4fc, #c4b5fd);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.night-mode .time-colon { color: rgba(255,255,255,0.4); }