:root {
  --ink: #0d241f;
  --ink-soft: #3d5a51;
  --muted: #6a8177;
  --line: rgba(13, 36, 31, 0.1);
  --line-strong: rgba(13, 36, 31, 0.16);
  --surface: rgba(248, 251, 248, 0.72);
  --surface-solid: #f5f8f5;
  --accent: #146b54;
  --accent-deep: #0c4336;
  --warm: #b4532a;
  --danger: #9b3a2c;
  --ok: #146b54;
  --radius: 16px;
  --radius-sm: 10px;
  --font: "IBM Plex Sans", "PingFang SC", "Noto Sans SC", sans-serif;
  --display: "Syne", "IBM Plex Sans", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --pad: clamp(1rem, 3vw, 1.75rem);
  --max: 1080px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --tap: 44px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

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

body {
  font-family: var(--font);
  color: var(--ink);
  background: #d7e3db;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

button,
input,
a {
  font: inherit;
  color: inherit;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    linear-gradient(165deg, #eaf1eb 0%, #d5e4db 42%, #c5d6cc 100%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.7;
  animation: drift 18s var(--ease) infinite alternate;
}

.orb-a {
  width: min(70vw, 520px);
  height: min(70vw, 520px);
  left: -12%;
  top: -18%;
  background: radial-gradient(circle, #f0d9b8 0%, transparent 70%);
}

.orb-b {
  width: min(60vw, 460px);
  height: min(60vw, 460px);
  right: -10%;
  top: 8%;
  background: radial-gradient(circle, #8fbfae 0%, transparent 68%);
  animation-delay: -6s;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(3%, 4%, 0) scale(1.06);
  }
}

.shell {
  width: min(var(--max), calc(100% - 2 * var(--pad)));
  margin: 0 auto;
  padding: calc(var(--pad) + env(safe-area-inset-top)) 0
    calc(2.5rem + env(safe-area-inset-bottom));
}

.masthead {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
  animation: rise 0.7s var(--ease) both;
}

.brand {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.55rem, 4.2vw, 2.15rem);
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--accent-deep);
}

.brand-sub {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.mast-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

.display {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.2rem, 7vw, 3.6rem);
  letter-spacing: -0.045em;
  line-height: 1.05;
  color: var(--accent-deep);
}

.lead {
  margin: 1rem 0 0;
  max-width: 28ch;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.auth-stage,
.login-stage {
  min-height: min(72vh, 640px);
  display: grid;
  align-items: end;
  gap: clamp(1.5rem, 4vw, 3rem);
  animation: rise 0.75s var(--ease) 0.05s both;
}

@media (min-width: 820px) {
  .auth-stage,
  .login-stage {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }
}

.auth-panel,
.login-form,
.compose,
.snapshot {
  background: var(--surface);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.auth-panel,
.login-form {
  padding: 1.15rem;
  border-radius: var(--radius);
  display: grid;
  gap: 0.9rem;
  max-width: 420px;
  width: 100%;
}

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
  padding: 0.25rem;
  border-radius: 12px;
  background: rgba(13, 36, 31, 0.06);
}

.tab {
  appearance: none;
  border: 0;
  background: transparent;
  min-height: 40px;
  border-radius: 10px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}

.tab.is-active {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 1px 2px rgba(13, 36, 31, 0.08);
}

.stack {
  display: grid;
  gap: 0.85rem;
}

.welcome {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.app-stage {
  animation: rise 0.65s var(--ease) both;
}

.hero-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 1.15rem;
    align-items: stretch;
  }
}

.snapshot {
  border-radius: var(--radius);
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
  display: grid;
  gap: 0.85rem;
  min-height: 100%;
}

.section-kicker {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.snapshot-main {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
}

.big-metric {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.big-num {
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(3rem, 10vw, 4.4rem);
  letter-spacing: -0.05em;
  line-height: 0.95;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.big-unit {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--muted);
}

.snapshot-meta {
  text-align: right;
}

.meta-line {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.meta-line.waist {
  margin-top: 0.25rem;
}

.delta {
  margin: 0.25rem 0 0;
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
}

.delta.down {
  color: var(--accent);
}

.delta.up {
  color: var(--warm);
}

.delta.flat {
  color: var(--muted);
}

.spark-wrap {
  height: 72px;
  margin-top: 0.15rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(20, 107, 84, 0.06), transparent 70%);
  overflow: hidden;
}

.sparkline {
  width: 100%;
  height: 100%;
  display: block;
}

.sparkline path.area {
  fill: rgba(20, 107, 84, 0.14);
}

.sparkline path.line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  animation: draw 1.1s var(--ease) 0.15s forwards;
}

@keyframes draw {
  to {
    stroke-dashoffset: 0;
  }
}

.summary-line {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.compose {
  border-radius: var(--radius);
  padding: clamp(1.1rem, 2.5vw, 1.45rem);
  display: grid;
  gap: 1rem;
}

.compose-head h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.35rem;
  letter-spacing: -0.03em;
}

.compose-hint {
  margin: 0.3rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.field-span {
  grid-column: 1 / -1;
}

@media (max-width: 520px) {
  .fields {
    grid-template-columns: 1fr;
  }

  .snapshot-meta {
    text-align: left;
    width: 100%;
  }
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field > span {
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 500;
}

.field input {
  width: 100%;
  min-height: var(--tap);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.8rem;
  background: #fff;
  color: var(--ink);
  font-family: var(--mono);
  font-weight: 450;
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field-emphasis input {
  font-size: 1.15rem;
  font-weight: 600;
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(20, 107, 84, 0.16);
}

.field input::placeholder {
  color: #9aada4;
  font-weight: 400;
}

.compose-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tap);
  padding: 0.65rem 1.15rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.18s var(--ease), background 0.18s ease, border-color 0.18s ease;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent-deep);
  color: #f4fbf7;
  min-width: 7.5rem;
}

.btn-primary:hover {
  background: var(--accent);
}

.btn-block {
  width: 100%;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.35);
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
}

.history {
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.history-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.history-head h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.history-tip {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.table-scroll {
  border-top: 1px solid var(--line-strong);
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.item {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr) auto;
  gap: 0.5rem 1rem;
  align-items: center;
  padding: 0.95rem 0.15rem;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: background 0.15s ease;
  animation: rise 0.45s var(--ease) both;
}

.item:hover {
  background: rgba(255, 255, 255, 0.35);
}

.item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.item .date {
  font-weight: 600;
  color: var(--ink);
}

.item .note {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item .metrics {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.item .metrics .w {
  font-weight: 600;
  font-size: 1.02rem;
}

.item .metrics .waist {
  margin-top: 0.15rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.item .del {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--danger);
  min-height: 40px;
  min-width: 40px;
  padding: 0.4rem 0.65rem;
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  opacity: 0.72;
}

.item .del:hover,
.item:hover .del {
  opacity: 1;
  border-color: color-mix(in srgb, var(--danger) 28%, white);
  background: rgba(155, 58, 44, 0.06);
}

@media (max-width: 640px) {
  .item {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "date del"
      "metrics del";
    gap: 0.25rem 0.75rem;
    padding: 1rem 0.1rem;
  }

  .item .date-block {
    grid-area: date;
  }

  .item .metrics {
    grid-area: metrics;
    text-align: left;
  }

  .item .del {
    grid-area: del;
    align-self: center;
  }

  .history-tip {
    display: none;
  }
}

@media (min-width: 900px) {
  .item {
    padding-left: 0.35rem;
    padding-right: 0.35rem;
  }
}

.empty {
  margin: 1.25rem 0 0;
  color: var(--muted);
  text-align: center;
  padding: 1.5rem 1rem;
}

.error {
  margin: 0;
  color: var(--danger);
  font-size: 0.9rem;
}

.msg {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ok);
  font-weight: 500;
}

.msg.is-error {
  color: var(--danger);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

[hidden] {
  display: none !important;
}

@supports (padding: max(0px)) {
  .shell {
    padding-left: 0;
    padding-right: 0;
  }
}