:root {
  --color-primary: #0b1220;
  --color-on-primary: #f8fafc;
  --color-accent: #2563eb;
  --color-on-accent: #ffffff;
  --color-background: #f4f7fb;
  --color-foreground: #0b1220;
  --color-muted: #e8eef6;
  --color-muted-foreground: #475569;
  --color-border: #d7e0ec;
  --color-surface: rgba(255, 255, 255, 0.78);
  --color-ring: #2563eb;
  --font-display: "Outfit", system-ui, sans-serif;
  --font-body: "Quicksand", system-ui, sans-serif;
  --radius: 16px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --jump-h: 56px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--jump-h) + 16px);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--color-foreground);
  background: var(--color-background);
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

.login-screen {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}

.login-screen[hidden],
#app[hidden] {
  display: none !important;
}

.login-card {
  width: min(400px, 100%);
  display: grid;
  gap: 14px;
  padding: 28px 22px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.login-card h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: -0.02em;
}

.login-sub {
  margin: -4px 0 6px;
  color: var(--color-muted-foreground);
  font-size: 0.95rem;
}

.field {
  display: grid;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 700;
}

.field input {
  min-height: 48px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  padding: 0 14px;
  font: inherit;
  font-weight: 500;
  background: #fff;
  color: var(--color-foreground);
}

.field input:focus {
  outline: 3px solid color-mix(in srgb, var(--color-ring) 45%, white);
  outline-offset: 1px;
  border-color: var(--color-accent);
}

.login-error {
  margin: 0;
  color: #b91c1c;
  font-size: 0.9rem;
  font-weight: 700;
}

.login-submit {
  width: 100%;
  margin-top: 4px;
}

.hero-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 480px at 12% -10%, rgba(37, 99, 235, 0.18), transparent 60%),
    radial-gradient(700px 420px at 100% 0%, rgba(14, 165, 233, 0.12), transparent 55%),
    linear-gradient(180deg, #eef3f9 0%, #f7f9fc 42%, #f4f7fb 100%);
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 100;
}

.skip:focus {
  left: 8px;
}

.hero {
  padding: max(28px, env(safe-area-inset-top)) 20px 18px;
}

.hero-inner {
  max-width: 440px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-5);
}

.identity {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.brand {
  margin: 0 0 2px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.avatar {
  flex: 0 0 auto;
  width: 72px;
  height: 72px;
  border-radius: 22px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-on-primary);
  background: linear-gradient(145deg, #0b1220 0%, #1e3a5f 100%);
  box-shadow: var(--shadow);
  background-size: cover;
  background-position: center;
}

.identity-text h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 5vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.tagline {
  margin: 6px 0 0;
  color: var(--color-muted-foreground);
  font-size: 0.98rem;
}

.hero-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.btn {
  cursor: pointer;
  min-height: 48px;
  border: 0;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  font: inherit;
  font-weight: 700;
  transition: transform 180ms var(--ease), background 180ms var(--ease), box-shadow 180ms var(--ease);
}

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

.btn:focus-visible,
.icon-btn:focus-visible,
.jump-chip:focus-visible,
.link-row:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-ring) 55%, white);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.28);
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-ghost {
  background: var(--color-surface);
  color: var(--color-foreground);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  background: #fff;
}

.btn-icon {
  width: 18px;
  height: 18px;
  display: inline-grid;
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

.jump {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--color-background) 78%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 70%, transparent);
}

.jump-track {
  max-width: 440px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.jump-track::-webkit-scrollbar {
  display: none;
}

.jump-chip {
  cursor: pointer;
  flex: 0 0 auto;
  min-height: 36px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.7);
  color: var(--color-foreground);
  padding: 0 14px;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  white-space: nowrap;
  transition: background 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}

.jump-chip[aria-current="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
}

.jump-chip:hover {
  border-color: color-mix(in srgb, var(--color-accent) 45%, var(--color-border));
}

main {
  max-width: 440px;
  margin: 0 auto;
  padding: 18px 16px 40px;
  display: grid;
  gap: var(--space-6);
}

.section {
  scroll-margin-top: calc(var(--jump-h) + 12px);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  padding: 0 4px;
}

.section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.section-note,
.project-blurb {
  margin: 0;
  color: var(--color-muted-foreground);
  font-size: 0.9rem;
}

.project-blurb {
  margin-top: 4px;
  max-width: 34ch;
}

.project-block {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-radius: calc(var(--radius) + 4px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.project-block.is-dimmed {
  opacity: 0.38;
  filter: grayscale(0.35);
}

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

.link-row-wrap {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: stretch;
}

.link-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 10px 12px;
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
  background: #fff;
  border: 1px solid var(--color-border);
  transition: transform 160ms var(--ease), border-color 160ms var(--ease), box-shadow 160ms var(--ease);
}

.qr-btn {
  cursor: pointer;
  min-width: 56px;
  min-height: 52px;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-foreground);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 6px 8px;
  font: inherit;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background 160ms var(--ease), border-color 160ms var(--ease), transform 160ms var(--ease);
}

.qr-btn svg {
  width: 18px;
  height: 18px;
}

.qr-btn:hover {
  border-color: color-mix(in srgb, var(--color-accent) 45%, var(--color-border));
  background: color-mix(in srgb, var(--color-accent) 8%, #fff);
  color: var(--color-accent);
}

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

.project-block .link-row,
.project-block .qr-btn {
  background: color-mix(in srgb, #fff 88%, var(--color-muted));
}

.link-row:hover {
  border-color: color-mix(in srgb, var(--color-accent) 40%, var(--color-border));
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
}

.link-row:active {
  transform: scale(0.99);
}

.platform-icon {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: var(--color-muted);
  color: var(--color-primary);
  flex: 0 0 auto;
}

.platform-icon svg {
  width: 18px;
  height: 18px;
}

.link-meta {
  flex: 1;
  min-width: 0;
  display: grid;
}

.link-label {
  font-weight: 700;
  font-size: 0.98rem;
}

.link-channel {
  color: var(--color-muted-foreground);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.link-arrow {
  color: var(--color-muted-foreground);
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.footer {
  height: calc(20px + env(safe-area-inset-bottom));
}

.qr-box {
  width: 220px;
  height: 220px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}

.qr-box img,
.qr-box canvas {
  width: 220px !important;
  height: 220px !important;
  display: block;
}

.qr-url {
  margin: 0;
  font-size: 0.82rem;
  color: var(--color-muted-foreground);
  word-break: break-all;
  max-width: 280px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  z-index: 60;
}

.qr-dialog {
  border: 0;
  padding: 0;
  background: transparent;
  max-width: calc(100vw - 32px);
}

.qr-dialog::backdrop {
  background: rgba(11, 18, 32, 0.55);
  backdrop-filter: blur(4px);
}

.qr-sheet {
  width: min(360px, 100%);
  margin: auto;
  background: #fff;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.qr-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 0;
}

.qr-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.qr-subtitle {
  margin: 4px 0 0;
  color: var(--color-muted-foreground);
  font-size: 0.88rem;
  font-weight: 600;
}

.icon-btn {
  cursor: pointer;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 12px;
  background: var(--color-muted);
  color: var(--color-foreground);
  display: grid;
  place-items: center;
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

.qr-body {
  padding: 12px 20px 24px;
  display: grid;
  justify-items: center;
  gap: 10px;
  text-align: center;
}

#qr-canvas {
  width: 220px;
  height: 220px;
  border-radius: 16px;
  background: #fff;
}

.qr-url {
  margin: 0;
  font-size: 0.82rem;
  color: var(--color-muted-foreground);
  word-break: break-all;
  max-width: 280px;
}

@media (min-width: 768px) {
  .hero,
  main,
  .footer {
    padding-left: 24px;
    padding-right: 24px;
  }
}