:root {
  color-scheme: light;
  --bg-1: #f7f7f7;
  --bg-2: #f7f7f7;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: rgba(255, 255, 255, 0.98);
  --text: #1a2233;
  --muted: #5f6b7d;
  --accent: #7bd9c9;
  --accent-2: #7bd9c9;
  --accent-3: #f7c86a;
  --danger: #f07178;
  --stroke: rgba(12, 24, 44, 0.08);
  --shadow-hi: rgba(255, 255, 255, 0.9);
  --shadow-lo: rgba(16, 24, 40, 0.12);
  --glow: rgba(32, 223, 194, 0.28);
  --radius: 26px;
  --radius-lg: 36px;
  --space: clamp(18px, 4vw, 34px);
  --btn: #edf1f4;
  --btn-strong: #7bd9c9;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Manrope", system-ui, sans-serif;
  background: var(--bg-1);
  color: var(--text);
  min-height: 100vh;
  scroll-behavior: smooth;
}

body {
  display: flex;
  justify-content: center;
  padding: 28px 16px 40px;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

.bg-orbit {
  position: fixed;
  inset: -40vh -40vw;
  display: none;
  z-index: -1;
  filter: blur(2px);
}

.app {
  width: min(560px, 100%);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 4px;
  position: relative;
  z-index: 2;
}

.eyebrow {
  margin: 0;
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

h1,
h2 {
  margin: 6px 0 0;
  font-size: 1.8rem;
  font-family: "Space Grotesk", "Manrope", system-ui, sans-serif;
  letter-spacing: -0.01em;
  color: var(--text);
}

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--stroke);
  box-shadow: 18px 18px 40px var(--shadow-lo), -22px -22px 42px var(--shadow-hi);
  padding: var(--space);
  backdrop-filter: blur(18px);
  min-height: 62vh;
}

.flow,
.chart {
  display: flex;
  flex-direction: column;
  gap: 22px;
  animation: none;
}

.flow.home-step {
  min-height: 58vh;
}

.flow.home-step .big-grid {
  flex: 1;
  display: grid;
  grid-template-rows: 1fr 1fr;
}

.flow.home-step .big-btn {
  height: 100%;
  min-height: 0;
}
.hidden {
  display: none;
}

.step-enter {
  animation: stepIn 420ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.view-enter {
  animation: viewIn 520ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.prompt {
  font-size: clamp(1.4rem, 4.6vw, 2.1rem);
  font-weight: 650;
  margin: 0;
  font-family: "Space Grotesk", "Manrope", system-ui, sans-serif;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.subtext {
  color: var(--muted);
  margin: 6px 0 0;
}

.big-grid {
  display: grid;
  gap: 16px;
}

.big-btn,
.choice-btn {
  border: none;
  color: var(--text);
  background: var(--btn);
  border-radius: var(--radius);
  padding: 64px 28px;
  font-size: clamp(2.1rem, 7.2vw, 3.1rem);
  min-height: 160px;
  text-align: center;
  position: relative;
  font-family: "Space Grotesk", "Manrope", system-ui, sans-serif;
  letter-spacing: 0.08em;
  font-weight: 700;
  text-transform: uppercase;
  text-shadow: none;
  -webkit-text-stroke: 0;
  box-shadow: inset 0 0 0 1px rgba(12, 24, 44, 0.08), 22px 22px 38px var(--shadow-lo),
    -18px -18px 30px var(--shadow-hi);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  overflow: hidden;
}

.big-btn::before,
.choice-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: none;
  opacity: 0;
  pointer-events: none;
}

.big-btn:active,
.choice-btn:active {
  transform: translateY(2px) scale(0.99);
  box-shadow: inset 0 0 0 1px rgba(12, 24, 44, 0.12), 8px 8px 18px rgba(16, 24, 40, 0.18),
    -8px -8px 16px rgba(255, 255, 255, 0.8);
}

.choice-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 14px;
}

.hidden-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

.choice-btn.small {
  flex: 1 1 140px;
  text-align: center;
  padding: 32px 18px;
  font-size: 1.5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.choice-btn.active {
  border: 1px solid var(--accent);
  box-shadow: 0 0 18px var(--glow), 12px 12px 24px var(--shadow-lo), -10px -10px 20px var(--shadow-hi);
}

.input-field {
  width: 100%;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--stroke);
  border-radius: 18px;
  color: var(--text);
  padding: 22px 20px;
  font-size: 1.3rem;
  box-shadow: inset 0 0 14px rgba(16, 24, 40, 0.08);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
  font-family: "Space Grotesk", "Manrope", system-ui, sans-serif;
}

.input-field:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(36, 224, 196, 0.18), inset 0 0 14px rgba(16, 24, 40, 0.08);
}

.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.primary-btn {
  background: var(--btn-strong);
  color: #051319;
  font-weight: 700;
  border: none;
  border-radius: 20px;
  padding: 24px 26px;
  font-size: 1.3rem;
  box-shadow: 0 10px 22px rgba(36, 224, 196, 0.28);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: "Space Grotesk", "Manrope", system-ui, sans-serif;
  text-shadow: none;
  -webkit-text-stroke: 0;
}

.secondary-btn {
  background: transparent;
  border: 1px solid var(--stroke);
  color: var(--text);
  border-radius: 20px;
  padding: 22px 22px;
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: "Space Grotesk", "Manrope", system-ui, sans-serif;
  text-shadow: none;
  -webkit-text-stroke: 0;
}

.ghost-btn {
  border: 1px solid var(--stroke);
  color: var(--text);
  background: var(--btn);
  padding: 14px 20px;
  border-radius: 999px;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: "Space Grotesk", "Manrope", system-ui, sans-serif;
}

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

.filters {
  display: grid;
  gap: 16px;
}

.filter-block {
  display: grid;
  gap: 10px;
}

.label {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.toggle-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.toggle {
  border: 1px solid var(--stroke);
  background: var(--btn);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 16px;
  font-size: 0.95rem;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: "Space Grotesk", "Manrope", system-ui, sans-serif;
}

.toggle.active {
  border-color: var(--accent);
  color: #02231c;
  background: var(--btn-strong);
  box-shadow: 0 0 16px rgba(93, 242, 214, 0.35);
}

.chart-wrap {
  background: var(--surface);
  border-radius: 24px;
  padding: 16px;
  border: 1px solid var(--stroke);
}

#trend-chart {
  width: 100%;
  height: 240px;
}

.legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.history-list {
  display: grid;
  gap: 10px;
}

.history-item {
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--stroke);
  background: var(--surface);
  display: block;
  gap: 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  position: relative;
  overflow: hidden;
}

.history-content {
  display: grid;
  gap: 4px;
  background: var(--surface);
  padding: 12px 14px;
  border-radius: 14px;
  transition: transform 0.2s ease;
  position: relative;
  z-index: 1;
}

.history-delete {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 22px;
  background: #f2f2f2;
  color: #8b6a58;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.history-item strong {
  font-size: 1.05rem;
}

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

.tab {
  border: 1px solid var(--stroke);
  background: var(--btn);
  color: var(--text);
  border-radius: 16px;
  padding: 20px;
  font-size: 1.2rem;
  font-family: "Space Grotesk", "Manrope", system-ui, sans-serif;
  font-weight: 600;
  transition: transform 0.2s ease, background 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.tab.active {
  background: var(--btn-strong);
  color: #051319;
  border-color: transparent;
}

@keyframes stepIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes viewIn {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto;
  }
}

.notice {
  padding: 20px;
  border-radius: 20px;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  color: var(--muted);
  background: var(--btn);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.countdown {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 14px;
  font-size: 1.1rem;
  color: var(--muted);
  border: 1px solid var(--stroke);
  border-radius: 20px;
  padding: 14px 16px;
  background: var(--btn);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.countdown-ring {
  width: 86px;
  height: 86px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  color: var(--text);
  background: conic-gradient(var(--accent) calc(var(--p) * 1turn), rgba(36, 224, 196, 0.12) 0);
  border: 1px solid rgba(36, 224, 196, 0.35);
  box-shadow: inset 0 0 10px rgba(36, 224, 196, 0.16);
  position: relative;
}

.countdown-ring::after {
  content: "";
  position: absolute;
  inset: 10px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  border: 1px solid var(--stroke);
}

.countdown-ring span {
  position: relative;
  z-index: 1;
  font-weight: 700;
  color: var(--text);
}

.countdown-text {
  font-size: 1.05rem;
  color: var(--muted);
}

@media (min-width: 600px) {
  #trend-chart {
    height: 280px;
  }
}