/* ===================== TOKENS ===================== */
:root {
  /* Light — тёплая глина / утренний песок */
  --bg: #EBE3D7;
  --bg-elev: #F4EEE3;
  --bg-card: #FFFCF6;
  --ink: #2A2520;
  --ink-soft: #6B5F52;
  --ink-faint: #A89C8C;
  --accent: #C4623F;       /* терракота */
  --accent-soft: #E8B79A;
  --accent-deep: #8C3F22;
  --line: #D9CFBE;
  --line-soft: #E5DCC9;
  --success: #6B8C5A;
  --shadow: 0 1px 2px rgba(60, 40, 20, 0.04), 0 8px 30px rgba(60, 40, 20, 0.06);
  --shadow-strong: 0 2px 6px rgba(60, 40, 20, 0.08), 0 20px 50px rgba(60, 40, 20, 0.12);

  --font-display: 'Fraunces', 'Georgia', serif;
  --font-body: 'Manrope', -apple-system, system-ui, sans-serif;

  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bot: env(safe-area-inset-bottom, 0px);
}

[data-theme="dark"] {
  --bg: #0F1721;
  --bg-elev: #18222F;
  --bg-card: #1E2A38;
  --ink: #F1E8D8;
  --ink-soft: #B8AC98;
  --ink-faint: #6F6657;
  --accent: #E8A87C;
  --accent-soft: #C58B6A;
  --accent-deep: #F4C2A0;
  --line: #2A3744;
  --line-soft: #1F2A37;
  --success: #8FB078;
  --shadow: 0 1px 2px rgba(0,0,0,0.2), 0 8px 30px rgba(0,0,0,0.3);
  --shadow-strong: 0 2px 6px rgba(0,0,0,0.3), 0 20px 50px rgba(0,0,0,0.5);
}

/* ===================== BASE ===================== */
* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overscroll-behavior: none;
}

body {
  font-size: 16px;
  line-height: 1.5;
  transition: background 0.4s ease, color 0.4s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* Subtle film grain for warmth */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.4;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.2 0 0 0 0 0.15 0 0 0 0 0.1 0 0 0 0.06 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

[data-theme="dark"] .grain {
  mix-blend-mode: screen;
  opacity: 0.25;
}

/* ===================== SCREENS ===================== */
.screen {
  display: none;
  min-height: 100vh;
  min-height: 100dvh;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bot);
}

.screen.active {
  display: block;
  animation: fade-in 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===================== HOME ===================== */
.screen--home {
  max-width: 640px;
  margin: 0 auto;
  padding-left: 22px;
  padding-right: 22px;
  padding-bottom: calc(var(--safe-bot) + 40px);
}

.home-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0 8px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 18px;
  letter-spacing: 0.02em;
}

.brand-mark {
  font-size: 22px;
  color: var(--accent);
  display: inline-block;
  transform: rotate(-12deg);
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ink-soft);
  transition: background 0.2s, color 0.2s, transform 0.2s;
}
.icon-btn:hover { background: var(--bg-elev); color: var(--ink); }
.icon-btn:active { transform: scale(0.92); }

/* Hero */
.hero {
  padding: 32px 0 28px;
  position: relative;
}

.hero-eyebrow {
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 14px;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 350;
  font-size: clamp(44px, 11vw, 64px);
  line-height: 0.96;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 144, "SOFT" 80;
}

.hero-title em {
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
  font-variation-settings: "opsz" 144, "SOFT" 100;
}

.hero-sub {
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 15px;
  letter-spacing: 0.01em;
}

/* Streak */
.streak-card {
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  padding: 22px 24px;
  margin-bottom: 28px;
  box-shadow: var(--shadow);
}

.streak-main {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: 18px;
}

.streak-num {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 300;
  line-height: 0.9;
  font-variation-settings: "opsz" 144;
  color: var(--ink);
}

.streak-label-top {
  font-size: 14px;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

.streak-label-bot {
  font-size: 13px;
  color: var(--ink-faint);
  margin-top: 2px;
}

.streak-dots {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.streak-dot {
  aspect-ratio: 1;
  width: 100%;
  min-height: 32px;
  border-radius: 8px;
  background: var(--line-soft);
  position: relative;
  display: grid;
  place-items: center;
}

.streak-dot.done {
  background: var(--accent);
}

.streak-dot.today {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.streak-dot-day {
  font-size: 9px;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.streak-dot.done .streak-dot-day {
  color: rgba(255,255,255,0.85);
}

/* Sections */
.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
  font-variation-settings: "opsz" 14;
}

/* Duration picker */
.duration-picker { margin-bottom: 28px; }

.duration-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.duration-card {
  background: var(--bg-card);
  border: 1.5px solid var(--line-soft);
  border-radius: 18px;
  padding: 18px 16px;
  text-align: left;
  transition: border-color 0.2s, transform 0.15s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}

.duration-card.active {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.duration-card.active::after {
  content: "";
  position: absolute;
  top: 12px;
  right: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.duration-card:active { transform: scale(0.98); }

.duration-card-num {
  font-family: var(--font-display);
  font-size: 38px;
  font-weight: 350;
  line-height: 1;
  color: var(--ink);
  font-variation-settings: "opsz" 144;
}

.duration-card-num span {
  font-size: 14px;
  color: var(--ink-soft);
  margin-left: 4px;
  font-variation-settings: "opsz" 14;
}

.duration-card-desc {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 4px;
  margin-bottom: 12px;
}

.duration-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.duration-card-tags span {
  font-size: 10.5px;
  color: var(--ink-faint);
  background: var(--bg-elev);
  padding: 3px 7px;
  border-radius: 6px;
  letter-spacing: 0.02em;
}

/* Actions */
.actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
}

.btn {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.01em;
  padding: 16px 24px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: transform 0.15s, background 0.2s, box-shadow 0.2s;
  width: 100%;
}

.btn-primary {
  background: var(--ink);
  color: var(--bg);
  box-shadow: var(--shadow);
}
.btn-primary:hover { background: var(--accent-deep); color: #FFF8EE; }
.btn-primary:active { transform: scale(0.98); }

[data-theme="dark"] .btn-primary { background: var(--accent); color: #1A1108; }
[data-theme="dark"] .btn-primary:hover { background: var(--accent-deep); }

.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: var(--bg-card); color: var(--ink); }

/* History */
.history-card { margin-bottom: 28px; }

.history-list {
  list-style: none;
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  overflow: hidden;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}
.history-item:last-child { border-bottom: none; }

.history-item-date {
  color: var(--ink);
  font-weight: 500;
}

.history-item-meta {
  color: var(--ink-faint);
  font-size: 12.5px;
}

.home-footer {
  text-align: center;
  font-size: 12px;
  color: var(--ink-faint);
  font-style: italic;
  letter-spacing: 0.01em;
  padding: 10px 12px 0;
}

/* ===================== WORKOUT ===================== */
.screen--workout {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 20px;
  display: none;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

.screen--workout.active {
  display: flex;
}

.workout-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0 8px;
}

.workout-progress {
  flex: 1;
}

.workout-progress-bar {
  height: 4px;
  background: var(--line-soft);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 6px;
}

.workout-progress-bar > div {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  width: 0%;
}

.workout-progress-text {
  display: flex;
  justify-content: space-between;
  font-size: 11.5px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
}

/* Exercise stage */
.exercise-stage {
  flex: 0 1 auto;
  padding: 12px 0 4px;
  text-align: center;
}

.exercise-section-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  padding: 4px 10px;
  background: var(--bg-card);
  border-radius: 20px;
  border: 1px solid var(--line-soft);
}

.exercise-name {
  font-family: var(--font-display);
  font-weight: 350;
  font-size: clamp(28px, 7vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-bottom: 14px;
  font-variation-settings: "opsz" 144, "SOFT" 60;
}

.exercise-illustration {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  aspect-ratio: 1.2;
  display: grid;
  place-items: center;
}

.exercise-illustration svg {
  width: 100%;
  height: 100%;
  max-height: 220px;
}

/* Timer */
.timer-area {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 0;
  min-height: 0;
}

.timer-ring {
  position: relative;
  width: min(220px, 50vw);
  aspect-ratio: 1;
  margin-bottom: 18px;
}

.timer-svg {
  width: 100%;
  height: 100%;
}

.timer-track {
  fill: none;
  stroke: var(--line-soft);
  stroke-width: 6;
}

.timer-progress {
  fill: none;
  stroke: var(--accent);
  stroke-width: 6;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.95s linear;
}

.timer-display {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.timer-num {
  font-family: var(--font-display);
  font-size: clamp(56px, 16vw, 80px);
  font-weight: 300;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  font-variation-settings: "opsz" 144;
  color: var(--ink);
}

.timer-unit {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 4px;
  font-weight: 500;
}

.exercise-hint {
  text-align: center;
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 320px;
  margin: 0 auto;
  line-height: 1.5;
  padding: 0 8px;
}

/* Controls */
.workout-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  padding: 16px 0 8px;
}

.ctrl-btn {
  border-radius: 50%;
  display: grid;
  place-items: center;
  transition: transform 0.15s, background 0.2s;
}

.ctrl-btn--secondary {
  width: 56px;
  height: 56px;
  background: var(--bg-card);
  color: var(--ink-soft);
  border: 1px solid var(--line);
}
.ctrl-btn--secondary:hover { color: var(--ink); }
.ctrl-btn--secondary:active { transform: scale(0.92); }

.ctrl-btn--primary {
  width: 78px;
  height: 78px;
  background: var(--ink);
  color: var(--bg);
  box-shadow: var(--shadow-strong);
}
[data-theme="dark"] .ctrl-btn--primary {
  background: var(--accent);
  color: #1A1108;
}
.ctrl-btn--primary:active { transform: scale(0.94); }

/* Upcoming */
.upcoming {
  text-align: center;
  padding: 14px 0 calc(var(--safe-bot) + 20px);
  border-top: 1px dashed var(--line);
  margin-top: 8px;
}

.upcoming-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 4px;
  font-weight: 600;
}

.upcoming-name {
  font-size: 14px;
  color: var(--ink-soft);
  font-style: italic;
  font-family: var(--font-display);
  font-weight: 400;
}

/* ===================== DONE ===================== */
.screen--done {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  text-align: center;
}

.screen--done.active { display: flex; }

.done-content {
  max-width: 360px;
  animation: rise 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes rise {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.done-mark {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  font-size: 44px;
  display: grid;
  place-items: center;
  margin: 0 auto 28px;
  box-shadow: var(--shadow-strong);
  animation: pop 0.5s 0.2s cubic-bezier(0.4, 1.6, 0.6, 1) both;
}

@keyframes pop {
  from { transform: scale(0); }
  to { transform: scale(1); }
}

.done-title {
  font-family: var(--font-display);
  font-weight: 350;
  font-size: 48px;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
  font-variation-settings: "opsz" 144;
}

.done-sub {
  color: var(--ink-soft);
  margin-bottom: 32px;
  font-size: 15px;
}

.done-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 32px;
  padding: 20px;
  background: var(--bg-card);
  border-radius: 16px;
  border: 1px solid var(--line-soft);
}

.done-stats > div {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.done-stats strong {
  font-family: var(--font-display);
  font-weight: 350;
  font-size: 36px;
  color: var(--ink);
  font-variation-settings: "opsz" 144;
}

.done-stats span {
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
  margin-top: 2px;
}

/* ===================== PREVIEW ===================== */
.screen--preview {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 20px;
  display: none;
}

.screen--preview.active { display: block; }

.preview-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: -0.01em;
  flex: 1;
  text-align: center;
  font-variation-settings: "opsz" 14;
}

.preview-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px 0 40px;
}

.preview-section-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-top: 24px;
  margin-bottom: 6px;
  color: var(--accent);
  font-variation-settings: "opsz" 14;
}

.preview-item {
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  padding: 16px 18px;
  display: flex;
  gap: 14px;
  align-items: center;
}

.preview-item-icon {
  width: 60px;
  height: 60px;
  flex-shrink: 0;
  background: var(--bg-elev);
  border-radius: 12px;
  display: grid;
  place-items: center;
  padding: 6px;
}

.preview-item-icon svg {
  width: 100%;
  height: 100%;
}

.preview-item-body {
  flex: 1;
  min-width: 0;
}

.preview-item-name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 16px;
  margin-bottom: 2px;
  font-variation-settings: "opsz" 14;
}

.preview-item-time {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.04em;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.preview-item-hint {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.4;
}

/* ===================== ILLUSTRATIONS (shared SVG styles) ===================== */
.illus {
  --stroke: var(--ink);
  --accent-stroke: var(--accent);
  --soft: var(--ink-faint);
}

.illus .body {
  fill: none;
  stroke: var(--stroke);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.illus .head {
  fill: var(--stroke);
}

.illus .joint {
  fill: var(--bg-card);
  stroke: var(--stroke);
  stroke-width: 2;
}

.illus .ground {
  stroke: var(--soft);
  stroke-width: 1.5;
  stroke-dasharray: 3 4;
  fill: none;
}

.illus .arrow {
  fill: none;
  stroke: var(--accent-stroke);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.illus .arrow-head {
  fill: var(--accent-stroke);
}

.illus .stretch-glow {
  fill: var(--accent-stroke);
  opacity: 0.18;
}

/* breathing animation for active illustration */
@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.015); }
}

.exercise-illustration svg {
  animation: breathe 4s ease-in-out infinite;
  transform-origin: center;
}

/* ===================== RESPONSIVE ===================== */
@media (max-height: 700px) {
  .exercise-illustration { max-height: 140px; }
  .exercise-illustration svg { max-height: 140px; }
  .timer-ring { width: min(180px, 42vw); }
  .timer-num { font-size: clamp(44px, 12vw, 60px); }
}

@media (min-width: 720px) {
  .screen--workout { max-width: 540px; }
}