:root {
  --bg: #0b0c0e;
  --bg-elevated: #0e1013;
  --panel: #101216;
  --panel-2: #131519;
  --line: #1b1e23;
  --line-strong: #2e333a;
  --text: #edeff2;
  --text-soft: #c4cad2;
  --muted: #8a9099;
  --muted-2: #5c636b;
  --accent: #7ce0ff;
  --danger: #ff5a52;
  --shadow: rgba(0, 0, 0, 0.48);
  --display: "Archivo Expanded", "Arial Black", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --body: Archivo, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Noto Sans SC", monospace;
}

* {
  box-sizing: border-box;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(900px 540px at 12% -18%, rgba(124, 224, 255, 0.12), transparent 58%),
    radial-gradient(820px 520px at 110% 10%, rgba(237, 239, 242, 0.07), transparent 62%),
    linear-gradient(180deg, #0b0c0e 0%, #08090b 100%);
  font-family: var(--body);
  line-height: 1.58;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

body::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(90deg, transparent, black 15%, black 85%, transparent);
}

body::after {
  background: repeating-linear-gradient(125deg, rgba(255,255,255,0.022) 0 1px, transparent 1px 12px);
  opacity: 0.45;
}

::selection {
  background: rgba(124, 224, 255, 0.25);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.is-hidden {
  display: none !important;
}

.auth-shell,
.app {
  position: relative;
  z-index: 1;
}

.mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1.5px solid var(--text);
  color: var(--text);
  font-family: var(--display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1;
  transform: skewX(-8deg);
}

.mark.small {
  width: 30px;
  height: 30px;
  font-size: 15px;
}

.eyebrow,
.tag {
  margin: 0;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.subtitle,
.hint,
.footnote {
  color: var(--muted);
}

.hint,
.footnote {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.03em;
}

.auth-shell {
  min-height: 100vh;
}

.auth-stage {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(420px, 1.1fr) minmax(360px, 0.9fr);
}

.auth-brand-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: 48px 56px;
  border-right: 1px solid var(--line);
  background:
    linear-gradient(145deg, rgba(255,255,255,0.035), transparent 42%),
    var(--bg);
}

.auth-brand-panel::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: 8%;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(124, 224, 255, 0.18);
  transform: skewX(-8deg) rotate(12deg);
}

.brand-lockup,
.rail-head {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: 0.14em;
}

.auth-copy {
  position: relative;
  z-index: 1;
}

.auth-copy h1 {
  margin: 22px 0 24px;
  font-family: var(--display);
  font-size: clamp(4rem, 8.2vw, 7.6rem);
  line-height: 0.88;
  letter-spacing: -0.055em;
}

.auth-copy p:not(.eyebrow) {
  max-width: 460px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.auth-meta {
  display: flex;
  gap: 40px;
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.auth-form-panel {
  display: grid;
  place-items: center;
  padding: 48px;
  background: var(--bg-elevated);
}

.auth-card {
  width: min(380px, 100%);
}

.auth-card h2 {
  margin: 8px 0 10px;
  font-family: var(--display);
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.auth-card .subtitle {
  margin: 0 0 26px;
  color: var(--muted);
}

.auth-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-bottom: 36px;
  border: 1px solid var(--line-strong);
}

.auth-switch .btn-secondary {
  border: 0;
  border-radius: 0;
}

.auth-switch .btn-secondary + .btn-secondary {
  border-left: 1px solid var(--line-strong);
}

.auth-switch .btn-secondary.is-active {
  background: var(--text);
  color: var(--bg);
}

.auth-form {
  display: grid;
  gap: 18px;
}

.app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr) 320px;
  background: var(--bg);
}

.app-rail {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: #090a0c;
}

.rail-head {
  padding: 22px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.rail-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 12px;
}

.rail-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  color: #7a8087;
  text-decoration: none;
  border-left: 2px solid transparent;
  font-size: 13px;
  transition: 160ms ease;
}

.rail-link span {
  color: rgba(255,255,255,0.34);
  font-family: var(--mono);
  font-size: 10px;
}

.rail-link:hover,
.rail-link.is-active {
  color: var(--text);
  background: #15181c;
  border-left-color: var(--accent);
}

.rail-user {
  display: grid;
  grid-template-columns: 34px 1fr 30px;
  align-items: center;
  gap: 11px;
  padding: 14px;
  border-top: 1px solid var(--line);
}

.avatar {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid #2e333a;
  border-radius: 50%;
  background: linear-gradient(135deg, #2a2e34, #15171a);
  color: var(--text-soft);
  font-family: var(--display);
  font-weight: 800;
  font-size: 13px;
}

.rail-user .hint {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-soft);
  font-family: var(--body);
  font-size: 12px;
  letter-spacing: 0;
}

.rail-user-sub {
  margin: 2px 0 0;
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 10px;
}

.icon-button {
  width: 30px;
  height: 30px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--muted);
  font-size: 17px;
}


.coach-panel {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow-y: auto;
  padding: 22px 18px;
  border-left: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(124, 224, 255, 0.04), transparent 38%),
    #090a0c;
}

.coach-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #111419, #0c0e11);
  padding: 16px;
}

.coach-status-card {
  border-color: rgba(124, 224, 255, 0.35);
}

.coach-card h2 {
  margin: 8px 0 8px;
  font-family: var(--display);
  font-size: 22px;
  line-height: 1;
  letter-spacing: -0.03em;
}

.coach-card p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.coach-label {
  margin-bottom: 12px !important;
  color: var(--muted-2) !important;
  font-family: var(--mono);
  font-size: 10px !important;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.coach-steps {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.coach-steps li {
  display: flex;
  align-items: center;
  gap: 10px;
  border-left: 2px solid transparent;
  padding: 9px 10px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.015);
  font-size: 12px;
}

.coach-steps li span {
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 10px;
}

.coach-steps li.is-active {
  border-left-color: var(--accent);
  color: var(--text);
  background: rgba(124, 224, 255, 0.055);
}

.coach-snapshot {
  display: grid;
  gap: 10px;
}

.coach-snapshot div {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 8px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.coach-snapshot span {
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.coach-snapshot strong {
  color: var(--text-soft);
  font-size: 12px;
  font-weight: 700;
  text-align: right;
}

.coach-actions {
  display: grid;
  gap: 10px;
}

.coach-actions .btn-secondary {
  width: 100%;
  min-height: 38px;
  padding: 9px 10px;
  font-size: 11px;
}

.coach-note {
  margin-top: auto;
}.workspace {
  min-width: 0;
}

.hero {
  position: sticky;
  top: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 32px;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 12, 14, 0.86);
  backdrop-filter: blur(16px);
}

.hero h1 {
  margin: 5px 0 0;
  font-family: var(--display);
  font-size: 22px;
  line-height: 1;
  letter-spacing: -0.02em;
}

.hero .subtitle {
  margin: 6px 0 0;
  color: var(--muted-2);
  font-size: 13px;
}

.hero-status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: ffpulse 1.8s infinite;
}

.planner-page,
.result-page {
  padding: 32px;
  animation: fade-up 520ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.card,
.result,
.level-guide,
.nutrition-panel,
.day-card,
.macro-card,
.meal-item,
.meso-card,
.cycle-week {
  border: 1px solid var(--line);
  background: var(--bg-elevated);
}

.card,
.result {
  position: relative;
  overflow: hidden;
}

.card::before,
.result::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent);
}

.intake-card,
.result {
  padding: 28px 30px;
  background: linear-gradient(180deg, var(--panel-2), var(--bg-elevated));
  box-shadow: 0 20px 46px var(--shadow);
}

.section-heading {
  margin-bottom: 24px;
}

.section-heading h2,
.result h2,
.result-title {
  margin: 6px 0 0;
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.025em;
}

.section-heading h2 {
  font-size: 34px;
}

.section-heading p:not(.eyebrow) {
  max-width: 650px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.wide-field,
.form-grid .btn-generate {
  grid-column: 1 / -1;
}

label {
  display: grid;
  gap: 8px;
}

label span,
.guide-title {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

input,
select {
  width: 100%;
  min-height: 46px;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  outline: none;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 15px;
  transition: border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 18px) 20px, calc(100% - 13px) 20px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 34px;
}

input::placeholder {
  color: #4a5058;
}

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 224, 255, 0.08);
}

select option {
  background: var(--bg-elevated);
  color: var(--text);
}

.btn-generate,
.btn-secondary {
  min-height: 46px;
  padding: 13px 16px;
  border: 1px solid var(--accent);
  border-radius: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.06em;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.btn-generate {
  background: var(--accent);
  color: var(--bg);
}

.btn-secondary {
  background: transparent;
  color: var(--muted);
  border-color: var(--line-strong);
}

.btn-generate:hover,
.btn-secondary:hover {
  transform: translateY(-1px);
}

.btn-secondary:hover {
  color: var(--text);
  border-color: var(--text-soft);
}

.btn-generate:disabled,
.btn-secondary:disabled {
  opacity: 0.55;
  cursor: wait;
  transform: none;
}

.level-guide {
  padding: 18px 20px;
}

.level-guide ul {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
}

.level-guide li + li {
  margin-top: 7px;
}

.cycle-field small {
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
}

.result-page {
  display: grid;
  gap: 16px;
}

.result-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.result-title {
  font-size: 34px;
}

.result {
  min-height: 220px;
}

.result h2 {
  font-size: 30px;
}

.result h3,
.nutrition-panel h3 {
  margin: 0 0 12px;
  font-family: var(--display);
  color: var(--text);
  font-size: 20px;
  letter-spacing: -0.02em;
}

.plan-summary {
  display: grid;
  gap: 8px;
  margin: 0 0 18px;
  color: var(--muted);
}

.week-grid,
.nested-week-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.day-card {
  padding: 16px;
}

.day-card h3,
.day-card h4,
.meso-card h4,
.meal-item h4 {
  margin: 0 0 8px;
  color: var(--text);
  font-family: var(--display);
  font-size: 16px;
  letter-spacing: -0.01em;
}

.day-card ul,
.evidence-list,
.meso-week-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 13px;
}

.day-card li + li,
.evidence-list li + li,
.meso-week-list li + li {
  margin-top: 6px;
}

.day-card.rest-day {
  border-style: dashed;
  background: #0c0e11;
}

.nutrition-panel {
  margin-top: 14px;
  padding: 20px;
}

.meso-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.meso-card {
  padding: 16px;
}

.meso-week-list span,
.cycle-week-note,
.nutrition-summary,
.footnote {
  color: var(--muted);
}

.cycle-week-list {
  display: grid;
  gap: 12px;
}

.cycle-week summary {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  list-style: none;
  cursor: pointer;
  padding: 14px 46px 14px 16px;
}

.cycle-week summary::-webkit-details-marker {
  display: none;
}

.cycle-week summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-family: var(--mono);
}

.cycle-week[open] summary::after {
  content: "-";
}

.cycle-week[open] summary {
  border-bottom: 1px solid var(--line);
}

.cycle-week-title {
  color: var(--text);
  font-family: var(--display);
  font-size: 15px;
}

.cycle-week-body {
  padding: 16px;
}

.macro-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 14px 0;
}

.macro-card,
.meal-item {
  padding: 16px;
}

.macro-card strong {
  display: block;
  margin-top: 4px;
  font-family: var(--display);
  font-size: 24px;
  color: var(--text);
}

.meal-plan {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
}

.evidence-panel {
  border-color: rgba(124, 224, 255, 0.25);
}

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

@keyframes ffpulse {
  0%, 100% { opacity: 0.35; box-shadow: 0 0 0 0 rgba(124, 224, 255, 0.35); }
  50% { opacity: 1; box-shadow: 0 0 0 8px rgba(124, 224, 255, 0); }
}

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

@media (max-width: 1180px) {
  .app {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .coach-panel {
    grid-column: 1 / -1;
    position: static;
    height: auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .coach-note {
    margin-top: 0;
  }
}

@media (max-width: 980px) {
  .auth-stage,
  .app {
    grid-template-columns: 1fr;
  }

  .auth-brand-panel {
    min-height: 46vh;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 32px;
  }

  .auth-copy h1 {
    font-size: clamp(3rem, 14vw, 5rem);
  }

  .auth-form-panel {
    padding: 32px 20px 44px;
  }

  .app-rail {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .rail-nav {
    flex-direction: row;
    overflow-x: auto;
  }

  .rail-user {
    grid-template-columns: 34px 1fr 30px;
  }

  .hero {
    position: static;
  }
}

@media (max-width: 720px) {
  .planner-page,
  .result-page,
  .hero {
    padding: 20px;
  }

  .hero,
  .result-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .form-grid,
  .macro-grid {
    grid-template-columns: 1fr;
  }

  .intake-card,
  .result {
    padding: 22px 18px;
  }

  .section-heading h2,
  .result-title {
    font-size: 28px;
  }

  .auth-meta {
    flex-wrap: wrap;
    gap: 14px;
  }
}
.rail-link {
  width: 100%;
  border-top: 0;
  border-right: 0;
  border-bottom: 0;
  background: transparent;
  font-family: var(--body);
}

.page-jump-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.training-focus-card {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel-2), var(--bg-elevated));
  padding: 28px 30px;
  overflow: hidden;
}

.training-focus-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--accent);
}

.training-focus-card h2 {
  margin: 8px 0 10px;
  font-family: var(--display);
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.training-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.training-metrics article {
  border: 1px solid var(--line);
  background: #0c0e11;
  padding: 16px;
}

.training-metrics span,
.training-metrics small {
  display: block;
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.training-metrics strong {
  display: block;
  margin: 6px 0 2px;
  color: var(--text);
  font-family: var(--display);
  font-size: 34px;
  line-height: 1;
}

@media (max-width: 720px) {
  .page-jump-grid,
  .training-metrics {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 760px) {
  .coach-panel {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  .coach-snapshot div {
    grid-template-columns: 1fr;
  }

  .coach-snapshot strong {
    text-align: left;
  }
}