/* ================================
   01. Root Variables
================================ */
:root {
  --color-bg: #f6f8fb;
  --color-bg-soft: #eef3f7;
  --color-surface: #ffffff;
  --color-surface-glass: rgba(255, 255, 255, 0.78);
  --color-text: #131b2a;
  --color-text-soft: rgba(19, 27, 42, 0.68);
  --color-primary: #4454b7;
  --color-primary-soft: rgba(68, 84, 183, 0.14);
  --color-secondary: #75abdd;
  --color-accent: #cc8fb8;
  --color-accent-soft: rgba(204, 143, 184, 0.16);
  --color-border: rgba(19, 27, 42, 0.12);
  --color-border-strong: rgba(19, 27, 42, 0.22);
  --color-shadow: rgba(19, 27, 42, 0.10);
  --color-danger: #b8475f;
  --color-success: #27745d;
  --color-warning: #906a19;
  --gradient-brand: linear-gradient(110deg, var(--color-primary), var(--color-secondary) 48%, var(--color-accent));

  --font-sans: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Segoe UI", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
  --font-display: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;

  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;

  --space-1: 0.35rem;
  --space-2: 0.65rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.25rem;
  --space-6: 3.5rem;
  --container: min(1160px, calc(100% - 40px));
  --header-height: 78px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 160ms;
  --duration-normal: 280ms;
  --duration-slow: 720ms;

  --z-header: 20;
  --z-nav: 30;
  --z-modal: 50;
  --z-effect: 0;
}

/* ================================
   02. Reset / Base
================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color: var(--color-text);
  background: var(--color-bg);
  font-family: var(--font-sans);
  line-height: 1.5;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 12% 8%, rgba(117, 171, 221, 0.24), transparent 34%),
    radial-gradient(circle at 86% 4%, rgba(204, 143, 184, 0.20), transparent 30%),
    linear-gradient(180deg, #fbfdff 0%, var(--color-bg) 48%, #f5f7fb 100%);
  color: var(--color-text);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(115deg, transparent 0 18%, rgba(19, 27, 42, 0.035) 18.1% 18.25%, transparent 18.35%),
    linear-gradient(168deg, transparent 0 66%, rgba(204, 143, 184, 0.12) 66.1% 66.26%, transparent 66.4%);
}

img,
svg,
iframe {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button,
input,
textarea,
select {
  border-radius: 0;
}

button {
  cursor: pointer;
}

code {
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.88em;
  overflow-wrap: anywhere;
}

/* ================================
   03. Layout
================================ */
.site-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1;
}

.site-header {
  width: var(--container);
  min-height: var(--header-height);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  position: relative;
  z-index: var(--z-header);
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.site-logo__mark {
  width: 42px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface-glass);
  box-shadow: 0 16px 40px var(--color-shadow);
}

.site-logo__mark svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--color-text);
  stroke-width: 4;
}

.site-logo__mark circle:first-child {
  fill: var(--color-text);
  stroke: none;
}

.site-logo__mark circle:nth-child(2) {
  fill: var(--color-primary);
  stroke: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.site-nav a {
  position: relative;
  padding-block: 0.35rem;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-normal) var(--ease-out);
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-footer {
  width: var(--container);
  margin: var(--space-6) auto var(--space-4);
  padding: var(--space-4);
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(19, 27, 42, 0.94);
  color: white;
}

.site-footer__brand {
  display: grid;
  gap: 0.25rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.site-footer__brand small,
.site-footer__nav {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
}

.site-footer__nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.section {
  width: var(--container);
  margin-inline: auto;
  padding-block: clamp(3rem, 7vw, 6.5rem);
}

.section--compact {
  padding-block: clamp(2rem, 4vw, 3.6rem);
}

.section--narrow {
  max-width: 820px;
}

.section--split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr);
  gap: var(--space-4);
  align-items: start;
}

.section-heading {
  max-width: 760px;
  margin-bottom: var(--space-5);
}

.section-heading h1,
.section-heading h2,
.sub-hero h1 {
  margin: 0;
  font-size: clamp(2.3rem, 6vw, 5rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.section-heading p,
.sub-hero p {
  color: var(--color-text-soft);
}

/* ================================
   04. Components
================================ */
.eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.button,
button.button {
  min-height: 46px;
  padding: 0.72rem 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--color-text);
  color: white;
  font-weight: 800;
  letter-spacing: 0.05em;
  transition: transform var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out), background var(--duration-fast);
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px var(--color-shadow);
}

.button[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.button--ghost {
  background: var(--color-surface-glass);
  color: var(--color-text);
  border-color: var(--color-border);
}

.button--danger {
  background: var(--color-danger);
}

.text-link {
  color: var(--color-primary);
  font-weight: 800;
}

.nav-toggle {
  width: 48px;
  aspect-ratio: 1;
  display: none;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
}

.nav-toggle__line {
  width: 20px;
  height: 1px;
  grid-area: 1 / 1;
  background: var(--color-text);
  transition: transform var(--duration-normal) var(--ease-out);
}

.nav-toggle__line + .nav-toggle__line {
  transform: translateY(6px);
}

.is-nav-open .nav-toggle__line:first-child {
  transform: rotate(35deg);
}

.is-nav-open .nav-toggle__line + .nav-toggle__line {
  transform: rotate(-35deg);
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.chart-grid--compact {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.chart-card,
.content-panel,
.form-panel,
.empty-state,
.setup-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-glass);
  box-shadow: 0 28px 80px var(--color-shadow);
}

.chart-card {
  overflow: hidden;
  display: grid;
  align-content: start;
  transition: transform var(--duration-normal) var(--ease-out), border-color var(--duration-normal) var(--ease-out);
}

.chart-card:hover {
  transform: translateY(-4px);
  border-color: rgba(68, 84, 183, 0.34);
}

.chart-card__cover {
  aspect-ratio: 16 / 9;
  background: var(--color-bg-soft);
  overflow: hidden;
}

.chart-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.chart-card:hover .chart-card__cover img {
  transform: scale(1.035);
}

.chart-card__body {
  padding: var(--space-4);
}

.chart-card h3 {
  margin: 0.15rem 0 0.3rem;
  font-size: 1.35rem;
  line-height: 1.25;
}

.chart-card__artist,
.chart-card__mapper,
.chart-card__desc,
.chart-card__meta {
  color: var(--color-text-soft);
}

.chart-card__artist {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.chart-card__mapper,
.chart-card__desc {
  margin: 0.4rem 0 0;
}

.chart-card__meta {
  margin-top: var(--space-3);
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: 0.9rem;
}

.empty-state,
.content-panel,
.form-panel {
  padding: clamp(1.35rem, 3vw, 2.5rem);
}

.empty-state {
  text-align: center;
}

.empty-state h1,
.empty-state h2,
.empty-state h3,
.content-panel h2,
.form-panel h1,
.form-panel h2 {
  margin-top: 0;
}

.notice {
  margin-bottom: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.7);
  color: var(--color-text-soft);
}

.notice p {
  margin: 0.2rem 0;
}

.notice--success {
  border-color: rgba(39, 116, 93, 0.28);
  color: var(--color-success);
}

.notice--danger {
  border-color: rgba(184, 71, 95, 0.28);
  color: var(--color-danger);
}

.stats-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.stats-band--admin {
  grid-template-columns: repeat(4, 1fr);
}

.stats-band div {
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-glass);
}

.stats-band strong {
  display: block;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
}

.stats-band span {
  color: var(--color-text-soft);
}

.meta-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin: var(--space-4) 0;
}

.meta-list--stack {
  grid-template-columns: 1fr;
}

.meta-list div {
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.55);
}

.meta-list dt {
  color: var(--color-text-soft);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.meta-list dd {
  margin: 0.25rem 0 0;
  overflow-wrap: anywhere;
}

.prose {
  color: var(--color-text-soft);
  line-height: 1.9;
}

.video-frame {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-text);
}

.video-frame iframe {
  width: 100%;
  height: 100%;
}

/* ================================
   05. Page Sections
================================ */
.hero {
  min-height: min(720px, calc(100vh - var(--header-height)));
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  padding-top: var(--space-3);
}

.hero__content {
  max-width: 900px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(3rem, 8vw, 8rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.hero__subtitle {
  margin: var(--space-3) 0 0;
  color: var(--color-primary);
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__lead {
  max-width: 620px;
  color: var(--color-text-soft);
  font-size: clamp(1rem, 2vw, 1.22rem);
}

.hero__actions,
.detail-hero__actions,
.section-actions,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.sub-hero {
  padding-top: clamp(3rem, 7vw, 6rem);
}

.detail-hero {
  display: grid;
  grid-template-columns: minmax(320px, 0.72fr) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: center;
}

.detail-hero__cover {
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 28px 80px var(--color-shadow);
}

.detail-hero__cover img,
.admin-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-hero h1 {
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 5.6rem);
  line-height: 1;
}

.admin-cover {
  margin: 0 0 var(--space-3);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

/* ================================
   06. Forms / Tables
================================ */
.form-grid,
.form-panel,
.setup-card {
  display: grid;
  gap: var(--space-3);
}

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

.form-grid--inline {
  margin-top: var(--space-4);
}

label {
  display: grid;
  gap: 0.45rem;
  color: var(--color-text-soft);
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.84);
  color: var(--color-text);
  padding: 0.78rem 0.88rem;
  outline: none;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}

textarea {
  min-height: 130px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: rgba(68, 84, 183, 0.6);
  box-shadow: 0 0 0 4px rgba(68, 84, 183, 0.12);
}

.checkbox-row {
  grid-template-columns: auto 1fr;
  align-items: start;
}

.checkbox-row input {
  width: auto;
  margin-top: 0.25rem;
}

.choice-group {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.45);
}

.choice-group legend {
  padding-inline: 0.35rem;
  color: var(--color-text-soft);
  font-weight: 800;
}

.filter-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 0.28fr) auto;
  gap: var(--space-2);
  align-items: end;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-glass);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.data-table th,
.data-table td {
  padding: 0.9rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--color-text-soft);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0.16rem 0.55rem;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 800;
}

.status-pill--approved {
  background: rgba(39, 116, 93, 0.12);
  color: var(--color-success);
}

.status-pill--rejected,
.status-pill--deleted {
  background: rgba(184, 71, 95, 0.12);
  color: var(--color-danger);
}

.status-pill--unpublished {
  background: rgba(144, 106, 25, 0.12);
  color: var(--color-warning);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tabs a {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface-glass);
  color: var(--color-text-soft);
  font-weight: 800;
}

.tabs a.is-active {
  color: white;
  background: var(--color-text);
  border-color: var(--color-text);
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
}

.log-list {
  display: grid;
  gap: var(--space-2);
  padding: 0;
  margin: 0;
  list-style: none;
}

.log-list li {
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.52);
  display: grid;
}

.log-list span,
.log-list small {
  color: var(--color-text-soft);
}

.file-list {
  max-height: 460px;
  overflow: auto;
  display: grid;
  gap: 0.35rem;
}

.file-list code {
  padding: 0.4rem 0.55rem;
  border-radius: var(--radius-xs);
  background: rgba(19, 27, 42, 0.06);
}

.setup-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-4);
}

.setup-card {
  width: min(720px, 100%);
  padding: clamp(1.5rem, 4vw, 3rem);
}

.check-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.check-list span {
  padding: 0.65rem 0.8rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.62);
}

.check-list .is-ok {
  color: var(--color-success);
}

.check-list .is-bad {
  color: var(--color-danger);
}

.file-hint {
  color: var(--color-primary);
  overflow-wrap: anywhere;
}

/* ================================
   07. Animations
================================ */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================
   08. Utilities
================================ */
.u-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ================================
   09. Responsive
================================ */
@media (max-width: 1024px) {
  .chart-grid,
  .chart-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-hero,
  .section--split {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 768px) {
  :root {
    --container: min(100% - 28px, 1160px);
    --header-height: 68px;
  }

  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-height) 14px auto;
    z-index: var(--z-nav);
    padding: var(--space-4);
    display: grid;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 28px 80px var(--color-shadow);
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-normal), transform var(--duration-normal);
  }

  .is-nav-open .site-nav {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-logo__text {
    font-size: 0.86rem;
  }

  .stats-band,
  .stats-band--admin,
  .filter-bar,
  .form-grid--two,
  .check-list {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .chart-grid,
  .chart-grid--compact {
    grid-template-columns: 1fr;
  }

  .hero h1,
  .detail-hero h1 {
    font-size: 2.8rem;
  }

  .meta-list {
    grid-template-columns: 1fr;
  }

  .chart-card__meta,
  .panel-heading {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ================================
   10. Reduced Motion
================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}