:root {
  --bg-base: #f4f7fb;
  --bg-elevated: #ffffff;
  --bg-soft: #edf2f8;
  --bg-accent-soft: #d9edf5;
  --line: #d8e1ec;
  --line-strong: #c2cfde;
  --text: #102236;
  --text-muted: #526579;
  --accent: #1671a5;
  --accent-strong: #0e5076;
  --success: #1e7f5b;
  --warning: #b26a1f;
  --danger: #b53939;
  --shadow-sm: 0 8px 22px rgba(14, 33, 56, 0.06);
  --shadow-md: 0 18px 40px rgba(14, 33, 56, 0.1);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  color: var(--text);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 10% -8%, rgba(22, 113, 165, 0.17), transparent 34%),
    radial-gradient(circle at 100% 0%, rgba(14, 80, 118, 0.12), transparent 38%),
    linear-gradient(180deg, #f8fbff 0%, #eff4fa 44%, #f6f9fd 100%);
}

a {
  color: inherit;
}

.container {
  width: min(1180px, 92vw);
  margin: 0 auto;
}

.hidden {
  display: none !important;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  background: rgba(248, 251, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(194, 207, 222, 0.56);
}

.header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  box-shadow: 0 10px 24px rgba(16, 77, 112, 0.3);
  font-size: 0.82rem;
}

.header-user {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.theme-shell {
  padding: 46px 0 34px;
}

.theme-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
  align-items: start;
}

.theme-copy,
.auth-card,
.card,
.stat-card,
.chart-card,
.plan-card,
.library-card,
.exercise-card,
.member-card,
.log-entry {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
  box-shadow: var(--shadow-sm);
}

.theme-copy {
  padding: 26px;
  min-height: 100%;
}

.eyebrow {
  margin: 0;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-strong);
  background: var(--bg-accent-soft);
}

h1,
h2,
h3,
h4,
h5 {
  margin: 0;
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.theme-copy h1 {
  margin-top: 14px;
  font-size: clamp(2rem, 4.2vw, 3.4rem);
}

.theme-copy p {
  margin: 14px 0 0;
  color: var(--text-muted);
  line-height: 1.7;
}

.feature-list {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.feature-list span {
  border: 1px solid #c7d8e9;
  background: var(--bg-soft);
  color: #25435a;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 600;
}

.auth-card {
  padding: 18px;
}

.auth-mode-switch,
.auth-method-switch,
.workspace-tabs {
  display: grid;
  gap: 8px;
}

.auth-mode-switch,
.auth-method-switch {
  grid-template-columns: 1fr 1fr;
}

.auth-mode-switch {
  margin-bottom: 14px;
}

.auth-method-switch {
  margin-bottom: 12px;
}

.auth-mode-btn,
.auth-method-btn,
.tab-btn,
.btn-primary,
.btn-secondary,
.btn-ghost {
  border-radius: 11px;
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
}

.auth-mode-btn,
.auth-method-btn,
.tab-btn {
  padding: 10px 12px;
  background: #fff;
  border-color: var(--line);
  color: var(--text-muted);
}

.auth-mode-btn.active,
.auth-method-btn.active,
.tab-btn.active {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  box-shadow: 0 8px 20px rgba(19, 98, 144, 0.24);
}

.auth-mode-btn:not(.active):hover,
.auth-method-btn:not(.active):hover,
.tab-btn:not(.active):hover {
  border-color: var(--line-strong);
  color: #2d4258;
  transform: translateY(-1px);
}

.auth-panel {
  display: none;
}

.auth-panel.active {
  display: block;
}

.auth-form {
  display: grid;
  gap: 10px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  color: #2e3f53;
}

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

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--text);
  background: #fff;
  padding: 10px 11px;
  outline: none;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

input::placeholder,
textarea::placeholder {
  color: #8ea0b3;
}

input:focus,
select:focus,
textarea:focus {
  border-color: #7da3c0;
  box-shadow: 0 0 0 3px rgba(34, 118, 170, 0.14);
}

textarea {
  resize: vertical;
  min-height: 84px;
}

.inline-input {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: end;
}

.consent-line {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.84rem;
}

.consent-line input {
  width: auto;
}

.btn-primary,
.btn-secondary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 10px 14px;
}

.btn-primary {
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  color: #fff;
  box-shadow: 0 10px 24px rgba(15, 83, 122, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.btn-secondary {
  border-color: var(--line);
  background: #fff;
  color: var(--text);
}

.btn-secondary:hover {
  border-color: #a8bbce;
  transform: translateY(-1px);
}

.btn-ghost {
  border-color: #b8cadb;
  color: #2e4d67;
  background: var(--bg-soft);
}

.btn-ghost:hover {
  border-color: #9cb3c9;
  transform: translateY(-1px);
}

.btn-primary:active,
.btn-secondary:active,
.btn-ghost:active {
  transform: translateY(0);
}

.legal-strip {
  margin-top: 18px;
}

.card {
  padding: 18px;
}

.card p,
.section-head p {
  color: var(--text-muted);
}

.card details {
  border: 1px solid #e3ebf4;
  border-radius: 12px;
  background: #f8fbff;
  padding: 10px 12px;
}

.card details + details {
  margin-top: 9px;
}

.card summary {
  cursor: pointer;
  color: #294661;
  font-weight: 600;
}

.workspace-shell {
  padding: 28px 0 36px;
}

.workspace-hero {
  margin-bottom: 16px;
}

.workspace-hero-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 14px;
  align-items: stretch;
}

.workspace-hero article {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #fff, #f9fbff);
  box-shadow: var(--shadow-sm);
  padding: 18px;
}

.workspace-hero article p {
  margin: 10px 0 0;
  color: var(--text-muted);
}

.hero-stats {
  display: grid;
  gap: 8px;
}

.stat-card {
  padding: 13px 14px;
}

.stat-card p {
  margin: 0;
  font-size: 0.83rem;
  color: var(--text-muted);
}

.stat-card h3 {
  margin-top: 7px;
  font-size: 1.24rem;
}

.workspace-tabs {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 14px;
}

.tab-panel {
  display: none;
  animation: tab-fade 0.28s ease;
}

.tab-panel.active {
  display: block;
}

@keyframes tab-fade {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.panel-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 12px;
  margin-bottom: 12px;
}

.section-head {
  margin-bottom: 10px;
}

.section-head p {
  margin: 6px 0 0;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.form-grid-two {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.full-width {
  grid-column: 1 / -1;
}

.hint {
  margin: 10px 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.empty-box {
  border: 1px dashed #bfd0e2;
  background: #f8fbff;
  border-radius: 12px;
  padding: 12px;
  color: #4b6176;
  font-size: 0.9rem;
}

.card-list,
.library-grid,
.logbook-list,
.exercise-stack {
  display: grid;
  gap: 10px;
}

.card-list {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

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

.plan-card,
.library-card,
.exercise-card,
.member-card {
  border-radius: var(--radius-md);
  padding: 12px;
}

.plan-card.active,
.library-card.active,
.member-card.active {
  border-color: #77a9c9;
  box-shadow:
    0 0 0 3px rgba(59, 132, 176, 0.14),
    var(--shadow-sm);
}

.plan-card p,
.library-card p {
  margin: 7px 0 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.chips {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chips span {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid #cddbec;
  background: var(--bg-soft);
  color: #31506a;
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 9px;
}

.card-actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-row {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 8px;
}

.workout-control-grid {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  align-items: end;
}

.exercise-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.exercise-head p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.table-wrap {
  margin-top: 10px;
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid #dde6f1;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  background: #fff;
}

th,
td {
  border-bottom: 1px solid #e4ebf4;
  text-align: left;
  padding: 8px 7px;
  font-size: 0.84rem;
}

th {
  background: #f6f9fd;
  color: #5a6f84;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
}

td input[type="number"] {
  min-width: 88px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.chart-card {
  padding: 12px;
  min-height: 300px;
}

.chart-card h4 {
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.chart-card canvas {
  width: 100% !important;
  height: 244px !important;
}

.upgrade-note {
  margin-bottom: 10px;
  border: 1px solid #edd4b3;
  border-radius: 11px;
  padding: 10px;
  background: #fff9f2;
  color: var(--warning);
  font-size: 0.86rem;
}

.log-entry {
  overflow: hidden;
}

.log-toggle {
  width: 100%;
  border: 0;
  background: #fff;
  text-align: left;
  padding: 12px;
  cursor: pointer;
}

.log-toggle strong {
  display: block;
  font-size: 0.92rem;
}

.log-toggle span {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.log-details {
  display: none;
  border-top: 1px solid #e4ebf4;
  padding: 11px 12px;
  background: #fbfdff;
}

.log-entry.open .log-details {
  display: block;
}

.log-details h5 {
  margin: 8px 0 0;
  font-size: 0.88rem;
}

.log-details p {
  margin: 6px 0 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.membership-plans {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.member-card .price {
  margin-top: 8px;
  font-size: 1.18rem;
  font-weight: 700;
}

.member-card ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--text-muted);
  font-size: 0.84rem;
  line-height: 1.6;
}

.checkout-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.checkout-summary {
  border: 1px dashed #c1d4e6;
  background: #f8fbff;
  border-radius: 11px;
  padding: 10px;
  color: #4b6176;
  font-size: 0.86rem;
}

.checkout-gateway-status {
  border: 1px solid #d9e4f1;
  background: #f9fbff;
  border-radius: 11px;
  padding: 10px;
  color: var(--text-muted);
  font-size: 0.84rem;
}

.checkout-gateway-status.ok {
  border-color: #bcdccc;
  background: #f3fbf7;
  color: var(--success);
}

.checkout-gateway-status.error {
  border-color: #e4c2c2;
  background: #fff6f6;
  color: var(--danger);
}

.flash {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 120;
  max-width: min(92vw, 420px);
  border-radius: 12px;
  padding: 11px 13px;
  background: #173247;
  color: #fff;
  font-size: 0.85rem;
  box-shadow: 0 14px 36px rgba(12, 31, 48, 0.34);
}

.flash.error {
  background: var(--danger);
}

.site-footer {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  padding: 16px 0 28px;
  color: #667b90;
  font-size: 0.84rem;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: rise 0.52s ease forwards;
}

.legal-strip.reveal {
  animation-delay: 0.08s;
}

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

@media (max-width: 1180px) {
  .theme-grid,
  .workspace-hero-grid,
  .panel-grid,
  .form-grid,
  .filter-row,
  .workout-control-grid,
  .stats-grid,
  .chart-grid,
  .membership-plans,
  .checkout-grid,
  .form-grid-two {
    grid-template-columns: 1fr 1fr;
  }

  .workspace-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .theme-shell {
    padding-top: 30px;
  }

  .header-inner {
    min-height: 68px;
  }

  .header-user {
    font-size: 0.82rem;
  }

  .theme-copy,
  .auth-card,
  .card,
  .workspace-hero article {
    padding: 14px;
    border-radius: 16px;
  }

  .theme-grid,
  .workspace-hero-grid,
  .auth-mode-switch,
  .auth-method-switch,
  .workspace-tabs,
  .panel-grid,
  .form-grid,
  .filter-row,
  .workout-control-grid,
  .stats-grid,
  .chart-grid,
  .membership-plans,
  .checkout-grid,
  .form-grid-two {
    grid-template-columns: 1fr;
  }

  .inline-input {
    grid-template-columns: 1fr;
  }

  .card-actions {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary,
  .btn-ghost {
    width: 100%;
  }

  .chart-card {
    min-height: 260px;
  }

  .chart-card canvas {
    height: 220px !important;
  }
}

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