/* DicomFlow — UI inspired by uupm.cc (UI/UX Pro Max)
   Tokens: primary #2563eb · accent #f97316 · DM Sans / Space Grotesk
   Glass cards · aurora blobs · light/dark · Chinese-first · mobile-first */

:root,
[data-theme="light"] {
  --primary: #2563eb;
  --primary-light: #3b82f6;
  --primary-dark: #1d4ed8;
  --accent: #f97316;
  --bg: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #475569;
  --muted-2: #94a3b8;
  --success: #00a544;
  --danger: #e40014;
  --glass: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(15, 23, 42, 0.08);
  --glass-hover: rgba(255, 255, 255, 0.9);
  --shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.05);
  --focus: 0 0 0 3px rgba(37, 99, 235, 0.35);
  --track: #e2e8f0;
  --nav-bg: rgba(248, 250, 252, 0.8);
  --radius: 16px;
  --radius-sm: 12px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --font: "DM Sans", -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-heading: "Space Grotesk", "DM Sans", -apple-system, sans-serif;
  color-scheme: light;
}

[data-theme="dark"] {
  --primary: #3b82f6;
  --primary-light: #60a5fa;
  --primary-dark: #2563eb;
  --accent: #fb923c;
  --bg: #0b0b10;
  --card: #121218;
  --border: #1e293b;
  --text: #f8fafc;
  --muted: #94a3b8;
  --muted-2: #64748b;
  --success: #05df72;
  --danger: #ff6568;
  --glass: rgba(18, 18, 24, 0.72);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover: rgba(26, 26, 34, 0.88);
  --shadow: 0 12px 48px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
  --focus: 0 0 0 3px rgba(59, 130, 246, 0.45);
  --track: #1e293b;
  --nav-bg: rgba(11, 11, 16, 0.75);
  color-scheme: dark;
}

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

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .blob,
  .reveal,
  .fill,
  .btn,
  .glass-card {
    animation: none !important;
    transition: none !important;
  }
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--primary);
  color: #fff;
  padding: 0.55rem 0.9rem;
  border-radius: 0 0 10px 0;
  font-weight: 600;
}
.skip-link:focus {
  left: 0;
}

/* ── Aurora background (uupm style) ── */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background: var(--bg);
}
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(64px);
  opacity: 0.45;
  animation: float 14s var(--ease) infinite;
}
.blob-a {
  width: min(55vw, 480px);
  height: min(55vw, 480px);
  top: -12%;
  left: 20%;
  background: rgba(37, 99, 235, 0.35);
}
.blob-b {
  width: min(40vw, 360px);
  height: min(40vw, 360px);
  top: 35%;
  right: -8%;
  background: rgba(249, 115, 22, 0.22);
  animation-delay: -4s;
}
.blob-c {
  width: min(45vw, 400px);
  height: min(45vw, 400px);
  bottom: -10%;
  left: -6%;
  background: rgba(59, 130, 246, 0.18);
  animation-delay: -8s;
}
[data-theme="dark"] .blob-a {
  background: rgba(37, 99, 235, 0.28);
  opacity: 0.55;
}
[data-theme="dark"] .blob-b {
  background: rgba(249, 115, 22, 0.16);
}
[data-theme="dark"] .blob-c {
  background: rgba(59, 130, 246, 0.14);
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(2%, 3%) scale(1.05);
  }
  66% {
    transform: translate(-3%, 1%) scale(0.96);
  }
}

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  background: var(--nav-bg);
  border-bottom: 1px solid var(--glass-border);
}
.nav-inner {
  max-width: 920px;
  margin: 0 auto;
  min-height: 64px;
  padding: 0 max(16px, env(safe-area-inset-right)) 0 max(16px, env(safe-area-inset-left));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
.brand:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: 12px;
}
.brand-mark {
  display: flex;
  flex-shrink: 0;
}
.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
}
.brand-tag {
  font-size: 0.7rem;
  color: var(--muted-2);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(37, 99, 235, 0.08);
}
.nav-link:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.icon-btn {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--muted);
  cursor: pointer;
  transition: transform 0.2s var(--ease), border-color 0.2s, color 0.2s, background 0.2s;
}
.icon-btn:hover {
  color: var(--text);
  border-color: var(--primary-light);
  transform: translateY(-1px);
}
.icon-btn:active {
  transform: scale(0.97);
}
.icon-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}
[data-theme="light"] .i-sun {
  display: none;
}
[data-theme="dark"] .i-moon {
  display: none;
}

/* ── Page ── */
.page {
  max-width: 920px;
  margin: 0 auto;
  padding: 28px max(16px, env(safe-area-inset-right)) 56px max(16px, env(safe-area-inset-left));
}

.reveal {
  animation: rise 0.55s var(--ease) both;
  animation-delay: var(--d, 0ms);
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero */
.hero {
  margin-bottom: 22px;
}
.eyebrow {
  margin: 0 0 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.18);
  padding: 5px 10px;
  border-radius: 999px;
}
.hero h1 {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: clamp(1.65rem, 4.2vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.2;
}
.grad-text {
  background: linear-gradient(90deg, #2563eb, #3b82f6, #f97316);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  margin: 0 0 16px;
  max-width: 48ch;
  color: var(--muted);
  font-size: 1rem;
}

.feature-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.feature-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 10px;
  padding: 7px 11px;
}
.feature-chip svg {
  color: var(--success);
  flex-shrink: 0;
}

/* Glass card */
.glass-card {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  margin-bottom: 16px;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.glass-card:hover {
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--primary) 22%, var(--glass-border));
}
.glass-muted {
  background: color-mix(in srgb, var(--glass) 70%, transparent);
}

.card-top {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.step-badge {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.28);
  flex-shrink: 0;
}
.step-badge.done {
  background: linear-gradient(135deg, #00a544, #05df72);
  box-shadow: 0 6px 16px rgba(0, 165, 68, 0.25);
}
.card-titles {
  flex: 1;
  min-width: 0;
}
.card-titles h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.card-titles p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.status-pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  background: color-mix(in srgb, var(--card) 80%, transparent);
  margin-left: auto;
}
.status-pill[data-state="uploading"] {
  color: var(--primary);
  border-color: rgba(37, 99, 235, 0.35);
  background: rgba(37, 99, 235, 0.1);
}
.status-pill[data-state="ready"] {
  color: var(--success);
  border-color: color-mix(in srgb, var(--success) 40%, transparent);
  background: color-mix(in srgb, var(--success) 12%, transparent);
}
.status-pill[data-state="error"] {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 40%, transparent);
  background: color-mix(in srgb, var(--danger) 10%, transparent);
}

/* Dropzone */
.dropzone {
  border: 1.5px dashed color-mix(in srgb, var(--primary) 35%, var(--border));
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--primary) 4%, transparent);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease),
    transform 0.2s var(--ease), box-shadow 0.2s var(--ease), opacity 0.2s var(--ease);
  outline: none;
}
.dropzone:hover,
.dropzone:focus-visible,
.dropzone.dragover {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
  box-shadow: var(--focus);
  transform: translateY(-1px);
}
/* Locked until human verification succeeds */
.dropzone.is-locked {
  opacity: 0.55;
  cursor: not-allowed;
  background: color-mix(in srgb, var(--muted-2) 8%, transparent);
  border-color: color-mix(in srgb, var(--muted-2) 40%, var(--border));
  box-shadow: none;
  transform: none;
}
.dropzone.is-locked:hover,
.dropzone.is-locked:focus-visible,
.dropzone.is-locked.dragover {
  border-color: color-mix(in srgb, var(--muted-2) 40%, var(--border));
  background: color-mix(in srgb, var(--muted-2) 8%, transparent);
  box-shadow: none;
  transform: none;
}
.dropzone.is-locked .drop-icon {
  color: var(--muted-2);
  background: color-mix(in srgb, var(--muted-2) 12%, transparent);
  border-color: color-mix(in srgb, var(--muted-2) 20%, transparent);
}
.drop-inner {
  min-height: 132px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 22px 14px;
  text-align: center;
}
.drop-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: var(--primary);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.14), rgba(249, 115, 22, 0.1));
  border: 1px solid rgba(37, 99, 235, 0.18);
  margin-bottom: 4px;
}
.drop-title {
  margin: 0;
  font-weight: 600;
  font-size: 0.98rem;
}
.drop-hint {
  margin: 0;
  color: var(--muted-2);
  font-size: 0.84rem;
}

.file-chip {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 70%, transparent);
}
.captcha-wrap {
  margin-bottom: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--glass-border));
  background: color-mix(in srgb, var(--primary) 5%, var(--card));
}
.captcha-wrap[hidden] {
  display: none !important;
}
.captcha-label {
  margin: 0 0 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
}
.captcha-hint {
  margin: 8px 0 0;
  font-size: 0.78rem;
  color: var(--muted-2);
  line-height: 1.45;
}
.captcha-hint.is-error {
  color: var(--danger);
}
.cf-turnstile {
  min-height: 65px;
}

.file-chip-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.file-name {
  font-weight: 600;
  word-break: break-all;
}
.file-size {
  font-size: 0.8rem;
  color: var(--muted-2);
}

/* Meter */
.meter {
  margin-top: 16px;
}
.meter-head {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
}
.track {
  height: 9px;
  border-radius: 999px;
  background: var(--track);
  overflow: hidden;
  border: 1px solid var(--border);
}
.fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  transition: width 0.28s var(--ease);
}
.fill-up {
  background: linear-gradient(90deg, #1d4ed8, #3b82f6, #60a5fa);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.35);
}
.fill-proc {
  background: linear-gradient(90deg, #c2410c, #f97316, #fb923c);
  box-shadow: 0 0 12px rgba(249, 115, 22, 0.3);
}
.meter-msg {
  margin: 8px 0 0;
  font-size: 0.86rem;
  color: var(--muted);
  word-break: break-word;
}
.meter-sub {
  margin: 4px 0 0;
  font-size: 0.78rem;
  color: var(--muted-2);
}

/* Params */
.params {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 640px) {
  .params {
    grid-template-columns: repeat(3, 1fr);
  }
  .field-check {
    grid-column: 1 / -1;
  }
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.lab {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
}
.ctl {
  font: inherit;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  min-height: 44px;
  padding: 8px 12px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  cursor: pointer;
}
.ctl:hover {
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}
.ctl:focus-visible {
  border-color: var(--primary);
  box-shadow: var(--focus);
}

.field-check {
  flex-direction: row;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 60%, transparent);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.field-check:hover {
  border-color: color-mix(in srgb, var(--primary) 35%, var(--border));
  background: rgba(37, 99, 235, 0.05);
}
.field-check input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--primary);
  flex-shrink: 0;
  cursor: pointer;
}
.field-check strong {
  display: block;
  font-size: 0.92rem;
}
.field-check em {
  display: block;
  margin-top: 2px;
  font-style: normal;
  font-size: 0.8rem;
  color: var(--muted-2);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}
.actions-hint {
  margin: 0;
  font-size: 0.86rem;
  color: var(--muted-2);
}

/* Buttons */
.btn {
  font: inherit;
  font-weight: 600;
  border-radius: 12px;
  min-height: 44px;
  padding: 0 18px;
  cursor: pointer;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease),
    background 0.2s, border-color 0.2s, opacity 0.2s;
}
.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}
.btn:active:not(:disabled) {
  transform: scale(0.98);
}
.btn-primary {
  color: #fff;
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  box-shadow: 0 8px 22px rgba(37, 99, 235, 0.3);
  min-width: 140px;
}
.btn-primary:hover:not(:disabled) {
  box-shadow: 0 10px 28px rgba(37, 99, 235, 0.4);
  transform: translateY(-1px);
}
.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}
.btn-primary.is-loading .btn-label {
  opacity: 0.85;
}
.btn-primary.is-loading .btn-spinner {
  display: inline-block;
}
.btn-spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.btn-secondary {
  color: var(--primary);
  background: var(--card);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
  background: rgba(37, 99, 235, 0.06);
}
.btn-ghost {
  color: var(--muted);
  background: transparent;
  border-color: var(--border);
  min-height: 36px;
  font-size: 0.85rem;
  padding: 0 12px;
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--muted-2);
}

.alert {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--danger) 35%, transparent);
  background: color-mix(in srgb, var(--danger) 10%, transparent);
  color: var(--danger);
  white-space: pre-wrap;
  font-size: 0.86rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* Result */
.result-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 760px) {
  .result-grid {
    grid-template-columns: 1.4fr 1fr;
  }
  .card-top .btn-secondary {
    margin-left: auto;
  }
}

.player {
  position: relative;
  background: #0b0b10;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-height: 220px;
  max-height: min(50vh, 400px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.player-empty {
  color: #94a3b8;
  font-size: 0.9rem;
  padding: 16px;
  text-align: center;
}
.player-media {
  max-width: 100%;
  max-height: min(50vh, 400px);
  object-fit: contain;
  background: #000;
}
.player-media:not([hidden]) {
  display: block;
  width: 100%;
}
.player-media[hidden] {
  display: none !important;
}

.result-side h3 {
  margin: 0 0 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
}
.file-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--card) 80%, transparent);
  max-height: min(50vh, 400px);
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}
.file-list li + li {
  border-top: 1px solid var(--border);
}
.file-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 100%;
  text-align: left;
  padding: 12px;
  min-height: 48px;
  background: transparent;
  border: none;
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: background 0.15s var(--ease);
}
.file-item:hover {
  background: rgba(37, 99, 235, 0.08);
}
.file-item:focus-visible {
  outline: none;
  box-shadow: inset var(--focus);
}
.file-item[aria-selected="true"] {
  background: rgba(37, 99, 235, 0.12);
  box-shadow: inset 3px 0 0 var(--primary);
}
.file-item-name {
  font-size: 0.88rem;
  font-weight: 600;
  word-break: break-all;
  color: var(--primary);
}
.file-item-meta {
  font-size: 0.75rem;
  color: var(--muted-2);
}

.tips-title {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.tips-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 640px) {
  .tips-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
}
.tip-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 70%, transparent);
}
.tip-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.16);
}
.tip-item strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 650;
  margin-bottom: 4px;
  color: var(--text);
}
.tip-item p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--muted);
}

.footer {
  border-top: 1px solid var(--glass-border);
  padding: 18px max(16px, env(safe-area-inset-right)) max(22px, env(safe-area-inset-bottom))
    max(16px, env(safe-area-inset-left));
}
.footer-inner {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  font-size: 0.82rem;
  color: var(--muted-2);
}
.footer-inner a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
}
.footer-inner a:hover {
  text-decoration: underline;
}

.footer-author {
  color: var(--muted-2);
  font-weight: 500;
}
.footer-author a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}
.footer-author a:hover {
  text-decoration: underline;
}
.footer-github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted) !important;
  text-decoration: none !important;
  font-weight: 500;
  transition: color 0.2s var(--ease);
}
.footer-github:hover {
  color: var(--text) !important;
}
.footer-github:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: 8px;
}
.footer-github svg {
  flex-shrink: 0;
}

.license-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted) !important;
  text-decoration: none !important;
  font-weight: 500;
  transition: color 0.2s var(--ease);
}
.license-link:hover {
  color: var(--primary) !important;
}
.license-link:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: 8px;
}
.license-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 2px 7px;
  border-radius: 6px;
  color: #fff;
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

/* License detail page */
.page-license .license-body {
  margin: 0;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 80%, var(--card));
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
  max-height: min(70vh, 560px);
  overflow-y: auto;
}
.page-license .actions {
  flex-wrap: wrap;
}
.page-license .actions .btn {
  text-decoration: none;
}
.dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--muted-2);
  opacity: 0.7;
}
.muted {
  color: var(--muted-2);
}

@media (max-width: 480px) {
  .brand-tag {
    display: none;
  }
  .glass-card {
    padding: 16px;
  }
  .card-top .btn-secondary {
    width: 100%;
  }
  .hero h1 br {
    display: none;
  }
}

/* Access token gate */
.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.auth-overlay[hidden] {
  display: none !important;
}
.auth-card {
  width: min(400px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 20px;
}
.auth-card h2 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 1.15rem;
}
.auth-desc {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.9rem;
}
.auth-error {
  margin: 8px 0 0;
  color: var(--danger);
  font-size: 0.85rem;
}
.auth-card .btn {
  width: 100%;
  margin-top: 14px;
}