@import url("https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible+Next:wght@400;500;600;700;800&display=swap");

:root {
  --bg: #050505;
  --panel: #111111;
  --panel-strong: #1b1b1b;
  --ink: #f4f4ef;
  --muted: #afb3ad;
  --line: #272727;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --blue: #39b8ff;
  --mint: #5cff95;
  --yellow: #ffe44d;
  --red: #d71920;
  --go: #19c44a;
  --card-ink: #071014;
  --stage: #0a0a0a;
  --stage-top: #111111;
  --trail: rgba(57, 184, 255, 0.45);
  --target: #39b8ff;
  --target-alt: #ff6b57;
}

body[data-theme="light"] {
  --bg: #eef4f4;
  --panel: #ffffff;
  --panel-strong: #f4f7f7;
  --ink: #0f2026;
  --muted: #5f7076;
  --line: #d9e1e3;
  --shadow: 0 16px 34px rgba(15, 32, 38, 0.08);
  --card-ink: #071014;
  --stage: #f4f8f8;
  --stage-top: #ffffff;
  --trail: rgba(57, 184, 255, 0.35);
}

body[data-theme="light"] .countdown-number {
  color: #000000;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Atkinson Hyperlegible Next", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

button,
select,
input,
textarea {
  font-family: inherit;
}

button,
select,
input,
textarea {
  border-radius: 18px;
}

button {
  border: 1px solid var(--line);
  padding: 1rem 1.35rem;
  cursor: pointer;
  font-weight: 800;
  font-size: 1.02rem;
  letter-spacing: 0.01em;
  transition: transform 140ms ease, opacity 140ms ease, background-color 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
  box-shadow: none;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.32);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
  box-shadow: none;
}

.primary {
  background: var(--blue);
  color: var(--card-ink);
  border-color: transparent;
}

#start-session,
#restart-from-clinician,
#restart-from-patient {
  background: var(--go);
  color: #ffffff;
  border-color: transparent;
}

#end-session,
#finish-early-button,
#finish-after-rating {
  background: var(--red);
  color: #ffffff;
  border-color: transparent;
}

.secondary {
  background: var(--panel-strong);
  border-color: var(--line);
  color: var(--ink);
}

.app-shell {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 2.5rem;
}

.site-footer {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.95rem;
  color: var(--muted);
  padding: 0.5rem 0 0;
  line-height: 1.5;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 1.35rem;
  box-shadow: var(--shadow);
}

.hero {
  margin-bottom: 1rem;
}

.hero-topbar,
.section-heading,
.button-row,
.exercise-topbar,
.summary-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-mark {
  width: 82px;
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-mark img {
  width: 72%;
  height: 72%;
  object-fit: contain;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.eyebrow,
.step-label,
.metric span,
.pill,
.scale-label {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1,
h2 {
  margin: 0;
  line-height: 0.95;
  letter-spacing: -0.04em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.4rem);
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.theme-dock {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel-strong);
}

.theme-icon {
  width: 42px;
  height: 42px;
  min-height: 42px;
  min-width: 42px;
  flex: 0 0 42px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: none;
  transition: background-color 140ms ease, color 140ms ease, transform 140ms ease;
}

.theme-icon:hover {
  transform: translateY(-1px);
}

.theme-icon.is-active {
  background: var(--blue);
  color: var(--card-ink);
}

.hero-action {
  min-height: 62px;
  border-radius: 20px;
  border: 1px solid var(--line);
  padding: 0.95rem 1.35rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, opacity 140ms ease;
}

.hero-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.32);
}

.hero-action.primary {
  background: var(--blue);
  color: var(--card-ink);
  border-color: transparent;
}

.hero-action.secondary {
  background: var(--panel-strong);
  color: var(--ink);
}

.hero-strip {
  margin-top: 14px;
  min-height: 66px;
  padding: 18px 20px;
  border-radius: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
}

.hero-copy,
.summary-copy,
.countdown-summary {
  color: var(--muted);
  line-height: 1.6;
}

.range-card,
.metric,
.pill,
.between-card,
.rating-grid button,
.linear-scale,
.field input,
.field select,
textarea,
.summary-panel {
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.setup-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}

.span-2 {
  grid-column: span 2;
}

.field {
  display: grid;
  gap: 0.55rem;
  font-weight: 700;
}

.field-title {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.info-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.info-button {
  width: 1.7rem;
  height: 1.7rem;
  min-width: 1.7rem;
  padding: 0;
  border-radius: 999px;
  background: var(--panel-strong);
  color: var(--blue);
  border-color: var(--line);
  font-size: 0.92rem;
  font-weight: 900;
  box-shadow: none;
}

.tooltip {
  position: absolute;
  left: calc(100% + 0.55rem);
  top: 50%;
  width: min(320px, 70vw);
  padding: 0.8rem 0.9rem;
  border-radius: 16px;
  background: #000;
  color: var(--ink);
  border: 1px solid var(--line);
  font-size: 0.88rem;
  line-height: 1.45;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) translateX(-4px);
  transition: opacity 140ms ease, transform 140ms ease;
  z-index: 3;
}

.info-wrap:hover .tooltip,
.info-wrap:focus-within .tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.field input,
.field select,
textarea {
  width: 100%;
  color: var(--ink);
  padding: 1rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.range-card {
  padding: 1rem;
  border-radius: 24px;
}

.range-card input {
  width: 100%;
  accent-color: var(--blue);
}

.range-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.7rem;
  color: var(--muted);
}

.range-meta strong {
  color: var(--blue);
  font-size: 1.15rem;
}

.summary-panel {
  margin-top: 1.2rem;
  padding: 1rem 1.1rem;
  border-radius: 22px;
}

.setup-actions {
  align-items: stretch;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.setup-actions button {
  min-width: 180px;
}

.home-button {
  min-width: 110px;
  padding-inline: 1.2rem;
  white-space: nowrap;
}

.full-center {
  min-height: calc(100vh - 3rem);
  display: none;
  place-items: center;
}

.full-center.active {
  display: grid;
}

.countdown-shell {
  text-align: center;
}

.countdown-label {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  color: var(--muted);
}

.countdown-number {
  font-size: clamp(6rem, 24vw, 12rem);
  font-weight: 900;
  line-height: 0.9;
  margin: 0.25rem 0 0.8rem;
  color: var(--yellow);
}

.exercise-mode.active {
  display: block;
}

body.session-mode .app-shell {
  width: 100%;
  max-width: none;
  padding: 0;
}

.exercise-mode {
  min-height: 100vh;
  background: var(--stage);
}

.exercise-topbar {
  padding: 1rem;
}

.metric {
  padding: 0.85rem 1rem;
  border-radius: 20px;
}

.metric strong {
  display: block;
  font-size: 1.1rem;
}

.exercise-actions {
  display: flex;
  gap: 0.8rem;
}

.exercise-stage {
  position: relative;
  height: calc(100vh - 112px);
  overflow: hidden;
  background: linear-gradient(180deg, var(--stage-top), var(--stage));
  border-top: 1px solid #171717;
}

body[data-theme="light"] .exercise-stage {
  border-top: 1px solid #dbe3e5;
}

body[data-theme="light"] .exercise-stage::after {
  background:
    linear-gradient(rgba(15, 32, 38, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,32,38,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
}

.exercise-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.exercise-stage.bg-shift::before,
.exercise-stage.bg-shift::after,
.exercise-stage.bg-stripes-horizontal::before,
.exercise-stage.bg-stripes-vertical::before {
  content: "";
  position: absolute;
  inset: -20%;
  opacity: 0.75;
  pointer-events: none;
}

.exercise-stage.bg-stripes-horizontal::before {
  background: repeating-linear-gradient(
    0deg,
    rgba(255,255,255,0.05) 0 28px,
    rgba(0,0,0,0.2) 28px 56px
  );
  animation: driftVertical 7s linear infinite;
}

.exercise-stage.bg-stripes-vertical::before {
  background: repeating-linear-gradient(
    90deg,
    rgba(255,255,255,0.05) 0 28px,
    rgba(0,0,0,0.2) 28px 56px
  );
  animation: driftHorizontal 7s linear infinite;
}

.exercise-stage.bg-shift::before {
  background: repeating-linear-gradient(
    90deg,
    rgba(255,255,255,0.05) 0 28px,
    rgba(0,0,0,0.2) 28px 56px
  );
  animation: driftHorizontal 7s linear infinite;
}

.exercise-stage.bg-shift::after {
  inset: -18%;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(255,255,255,0.04) 0 24px,
      rgba(0,0,0,0.16) 24px 48px
    );
  animation: driftVertical 9s linear infinite;
  z-index: 1;
}

.trail-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#trail-line {
  fill: none;
  stroke: var(--trail);
  stroke-width: 0.35;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.target {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  width: 64px;
  height: 64px;
  margin-left: -32px;
  margin-top: -32px;
  display: grid;
  place-items: center;
  color: #071014;
  background: var(--target);
  border-radius: 999px;
  box-shadow: 0 0 0 12px rgba(255, 255, 255, 0.06), 0 10px 30px rgba(0, 0, 0, 0.18);
}

.target.classic-dot {
  width: 58px;
  height: 58px;
  margin-left: -29px;
  margin-top: -29px;
}

.target.trail-dot::after {
  content: "";
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: #fff;
  opacity: 0.8;
}

.target.ring {
  background: transparent;
  border: 10px solid var(--target);
  box-shadow: 0 0 0 10px rgba(255, 255, 255, 0.05);
}

.target.color {
  transition: background-color 260ms ease, box-shadow 260ms ease;
}

.target.letter,
.target.word,
.target.word-color {
  width: auto;
  min-width: 88px;
  height: auto;
  min-height: 88px;
  padding: 1rem 1.2rem;
  border-radius: 999px;
}

.target-content {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 0.04em;
}

.between-card,
.post-card {
  margin-top: 1rem;
}

.between-card {
  text-align: center;
}

.rating-scale {
  margin: 1.2rem 0;
}

.rating-grid {
  display: grid;
  grid-template-columns: repeat(11, minmax(76px, 1fr));
  gap: 1rem;
  align-items: stretch;
}

.rating-grid button {
  min-height: 96px;
  padding: 0.9rem 0.5rem;
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--ink);
}

.rating-grid button.selected {
  background: var(--blue);
  color: var(--card-ink);
  border-color: transparent;
  transform: translateY(-2px);
}

.linear-scale {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 22px;
  margin-bottom: 1rem;
}

.scale-bar {
  height: 10px;
  border-radius: 999px;
  flex: 1;
  background: linear-gradient(90deg, var(--mint) 0%, var(--yellow) 50%, var(--red) 100%);
}

textarea {
  min-height: 180px;
  resize: vertical;
}

@keyframes driftHorizontal {
  0% { transform: translateX(0); }
  100% { transform: translateX(-120px); }
}

@keyframes driftVertical {
  0% { transform: translateY(0); }
  100% { transform: translateY(-120px); }
}

body.session-mode .hero,
body.session-mode .site-footer,
body.session-mode .banner {
  display: none;
}

@media (max-width: 920px) {
  .setup-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .span-2 {
    grid-column: span 2;
  }

  .summary-panel,
  .hero-topbar,
  .section-heading,
  .button-row,
  .exercise-topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions {
    width: 100%;
  }

  .theme-dock {
    width: 100%;
    justify-content: center;
  }

  .hero-action,
  button {
    width: 100%;
  }

  .rating-grid {
    grid-template-columns: repeat(6, minmax(72px, 1fr));
    gap: 0.85rem;
  }

  .home-button {
    align-self: auto;
  }

  .tooltip {
    left: 0;
    top: calc(100% + 0.5rem);
    transform: translateY(0);
  }

  .info-wrap:hover .tooltip,
  .info-wrap:focus-within .tooltip {
    transform: translateY(0);
  }
}

@media (max-width: 640px) {
  .app-shell {
    width: min(100%, calc(100% - 1rem));
  }

  .card {
    border-radius: 24px;
    padding: 1rem;
  }

  .setup-grid {
    grid-template-columns: 1fr;
  }

  .span-2 {
    grid-column: span 1;
  }

  .rating-grid {
    grid-template-columns: repeat(4, minmax(72px, 1fr));
    gap: 0.75rem;
  }

  .exercise-stage {
    height: calc(100vh - 192px);
  }

  .brand-block {
    align-items: flex-start;
  }

  .brand-mark {
    width: 72px;
    height: 72px;
  }
}