/* ============================================================
   Tung Portfolio — chat-bubble layout inspired by OnFlow
   Single-file stylesheet
   ============================================================ */

/* -------- Reset (minimal) -------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* -------- Design tokens -------- */
:root {
  /* Accent injected inline from settings */
  --accent: #0084FF;

  /* Light theme */
  --bg: #ffffff;
  --bg-soft: #f7f7f8;
  --bg-bubble: #f2f3f5;
  --bg-bubble-hover: #ebecef;
  --text: #141414;
  --text-soft: #4a4a4a;
  --text-muted: #8a8a90;
  --border: rgba(0, 0, 0, 0.08);
  --border-soft: rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);

  /* Type */
  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Layout */
  --container: 680px;
  --container-wide: 760px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 22px;
  --radius-full: 999px;

  /* Spacing (clamp for fluid scaling) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: clamp(14px, 2.4vw, 18px);
  --space-5: clamp(18px, 3vw, 24px);
  --space-6: clamp(24px, 4vw, 32px);
  --space-7: clamp(32px, 5vw, 48px);
  --space-8: clamp(48px, 7vw, 72px);

  --header-height: 60px;
}

html[data-theme="dark"] {
  --bg: #0d0e11;
  --bg-soft: #131418;
  --bg-bubble: #1a1c20;
  --bg-bubble-hover: #1f2126;
  --text: #e8e9ec;
  --text-soft: #c2c4cc;
  --text-muted: #8a8d96;
  --border: rgba(255, 255, 255, 0.08);
  --border-soft: rgba(255, 255, 255, 0.05);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.4);
}
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --bg: #0d0e11;
    --bg-soft: #131418;
    --bg-bubble: #1a1c20;
    --bg-bubble-hover: #1f2126;
    --text: #e8e9ec;
    --text-soft: #c2c4cc;
    --text-muted: #8a8d96;
    --border: rgba(255, 255, 255, 0.08);
    --border-soft: rgba(255, 255, 255, 0.05);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.4);
  }
}

/* -------- Base -------- */
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent); color: white; }

.skip-link {
  position: absolute;
  left: 8px;
  top: -40px;
  background: var(--accent);
  color: white;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top .2s;
}
.skip-link:focus { top: 8px; }

a, button {
  -webkit-tap-highlight-color: transparent;
}
a {
  color: inherit;
  transition: color .15s;
}
a:hover { color: var(--accent); }

/* -------- Container -------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-8);
}

/* -------- Header -------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.site-header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: var(--header-height);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  justify-content: center;
}
.site-nav__link {
  font-size: 14px;
  color: var(--text-soft);
  font-weight: 500;
  padding: 6px 0;
  position: relative;
}
.site-nav__link:hover { color: var(--text); }
.site-nav__link[aria-current="page"]::after,
.site-nav__link.is-active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.site-header__actions {
  display: flex;
  gap: 8px;
}
.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-soft);
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.icon-btn:hover {
  background: var(--bg-bubble);
  color: var(--text);
  transform: translateY(-1px);
}

.theme-toggle .icon { display: block; }
.theme-toggle .icon--moon { display: none; }
html[data-theme="dark"] .theme-toggle .icon--sun { display: none; }
html[data-theme="dark"] .theme-toggle .icon--moon { display: block; }
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .theme-toggle .icon--sun { display: none; }
  html:not([data-theme="light"]) .theme-toggle .icon--moon { display: block; }
}

@media (max-width: 540px) {
  .site-nav { gap: var(--space-3); margin: 0; flex: 1; justify-content: center; }
  .site-nav__link { font-size: 13px; }
}

/* -------- Profile -------- */
.profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  padding: var(--space-6) 0 var(--space-5);
}
.profile__avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow-md);
  border: 4px solid var(--bg);
}
.profile__avatar--placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: white;
  font-weight: 700;
  font-size: 32px;
  text-transform: uppercase;
}
.profile__name {
  font-size: clamp(24px, 4vw, 30px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.profile__tagline {
  font-size: 14px;
  color: var(--text-muted);
}
.profile__bio {
  font-size: 16px;
  color: var(--text-soft);
  max-width: 520px;
  line-height: 1.55;
}
.profile__socials {
  display: inline-flex;
  gap: 6px;
  margin-top: 4px;
}
.profile__socials a {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border-radius: var(--radius-full);
  transition: color .15s, background .15s, transform .15s;
}
.profile__socials a:hover {
  color: var(--accent);
  background: var(--bg-bubble);
  transform: translateY(-1px);
}

/* -------- Newsletter -------- */
.newsletter {
  background: var(--bg-bubble);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin: var(--space-6) 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.newsletter__title {
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.newsletter__desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}
.newsletter__form {
  display: flex;
  gap: 8px;
  margin-top: 6px;
  background: var(--bg);
  border-radius: var(--radius-full);
  padding: 5px 5px 5px 16px;
  align-items: center;
  border: 1px solid var(--border-soft);
}
.newsletter__input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: none;
  font-size: 14px;
  padding: 8px 0;
  min-width: 0;
}
.newsletter__submit {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  transition: transform .15s, opacity .15s;
}
.newsletter__submit:hover { transform: translateX(1px); opacity: .92; }

/* -------- Tag row -------- */
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  padding: var(--space-3) 0 var(--space-5);
  font-size: 13px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: var(--space-5);
}
.tag-row__item {
  padding: 6px 10px;
  color: var(--text-muted);
  border-radius: var(--radius-full);
  font-weight: 500;
  transition: color .15s, background .15s;
}
.tag-row__item:hover { color: var(--text); background: var(--bg-bubble); }
.tag-row__item--active { color: var(--text); background: var(--bg-bubble); }

/* -------- Section -------- */
.section {
  margin-top: var(--space-7);
}
.section-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-4);
}
.section-header__icon {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  background: var(--bg-bubble);
  border-radius: 50%;
}
.section-header__title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* -------- Writings list (chat bubbles) -------- */
.writings-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.writings-year-group {
  display: grid;
  grid-template-columns: 1fr 22px;
  gap: 10px;
  align-items: start;
}
.writings-year-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
}
.writings-year-label {
  position: sticky;
  top: calc(var(--header-height) + 12px);
  justify-self: end;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  height: max-content;
  padding: 4px 0;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  user-select: none;
  pointer-events: none;
}

.writing-row {
  position: relative;
}
.writing-row__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 6px 0;
  transition: transform .15s;
  color: inherit;
}
.writing-row__link:hover {
  color: inherit;
  transform: translateY(-1px);
}
.writing-row__head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 4px;
}
.writing-row__icon {
  font-size: 16px;
  display: inline-flex;
  width: 22px;
  justify-content: center;
}
.writing-row__title {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.writing-row__link:hover .writing-row__title { color: var(--accent); }

.writing-row__bubble {
  background: var(--bg-bubble);
  border-radius: var(--radius-lg);
  padding: 12px 14px;
  transition: background .15s, transform .15s, box-shadow .15s;
}
.writing-row__link:hover .writing-row__bubble,
.writing-row__link:active .writing-row__bubble {
  background: var(--bg-bubble-hover);
  box-shadow: var(--shadow-sm);
}
.writing-row__link:active .writing-row__bubble {
  transform: scale(0.99);
}
.writing-row__summary {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.55;
}
.writing-row__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
}
.writing-row__tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
}
.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: color-mix(in srgb, var(--tag-color, var(--accent)) 12%, transparent);
  color: var(--tag-color, var(--accent));
}
.lock-pill {
  margin-left: auto;
  font-size: 12px;
}

.writing-row--featured .writing-row__bubble {
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}

/* -------- CTA row + buttons -------- */
.cta-row {
  display: flex;
  justify-content: center;
  margin-top: var(--space-5);
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: transform .15s, background .15s, opacity .15s, color .15s;
  white-space: nowrap;
}
.btn--accent {
  background: var(--accent);
  color: white;
}
.btn--accent:hover {
  color: white;
  transform: translateY(-1px);
  opacity: .92;
}
.btn--ghost {
  color: var(--text-soft);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  color: var(--text);
  background: var(--bg-bubble);
  transform: translateY(-1px);
}

/* -------- Recommendations -------- */
.recommendations {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.rec-row__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 6px 0;
  transition: transform .15s;
}
.rec-row__link:hover { transform: translateY(-1px); color: inherit; }
.rec-row__head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 4px;
  font-size: 14px;
  font-weight: 600;
}
.rec-row__logo {
  display: inline-flex;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: white;
  font-weight: 700;
  overflow: hidden;
}
.rec-row__logo img { width: 100%; height: 100%; object-fit: cover; }
.rec-row__name { color: var(--text); }
.rec-row__category {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-bubble);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}
.ext-arrow {
  margin-left: auto;
  color: var(--text-muted);
  font-size: 13px;
  transition: transform .15s;
}
.rec-row__link:hover .ext-arrow { color: var(--accent); transform: translate(2px, -2px); }
.rec-row__bubble {
  background: var(--bg-bubble);
  border-radius: var(--radius-lg);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.55;
}
.rec-row__link:hover .rec-row__bubble,
.rec-row__link:active .rec-row__bubble {
  background: var(--bg-bubble-hover);
}
.rec-row__link:active .rec-row__bubble {
  transform: scale(0.99);
}

/* -------- Projects -------- */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.project-card__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: var(--radius-xl);
}
.project-card--linked { cursor: pointer; }
.project-card--linked:hover .project-card__title,
.project-card--linked:active .project-card__title { color: var(--accent); }
.project-card--linked:hover .ext-arrow,
.project-card--linked:active .ext-arrow { color: var(--accent); transform: translate(2px, -2px); }
.project-card--linked:active .project-card__bubble {
  background: var(--bg-bubble-hover);
  transform: scale(0.99);
}
.project-card--linked .project-card__github { position: relative; z-index: 2; }
.project-card__head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 0 4px;
}
.project-card__title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.project-card__title a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.project-card__title a:hover { color: var(--accent); }
.project-card__date {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: auto;
}
.project-card__thumb {
  position: relative;
  border-radius: var(--radius-xl);
  aspect-ratio: 16 / 10;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: transform .2s, box-shadow .2s;
}
.project-card:hover .project-card__thumb {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.project-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.project-card--coming-soon .project-card__thumb {
  filter: grayscale(0.05);
}
.project-card__coming {
  color: rgba(255, 255, 255, 0.85);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}
.project-card__bubble {
  background: var(--bg-bubble);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.project-card__desc {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.55;
}
.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.tech-chip {
  font-size: 11px;
  padding: 2px 8px;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-full);
}
.project-card__github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
  align-self: flex-start;
}
.project-card__github:hover { color: var(--accent); }

/* -------- Page header -------- */
.page-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 10px;
  padding: var(--space-5) 0 var(--space-5);
}
.page-header__icon {
  display: inline-flex;
  width: 48px;
  height: 48px;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: var(--bg-bubble);
  border-radius: 50%;
}
.page-header__title {
  font-size: clamp(28px, 5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.page-header__desc {
  color: var(--text-muted);
  font-size: 15px;
  max-width: 480px;
}

/* -------- Writing detail -------- */
.writing-detail {
  margin-top: var(--space-4);
}
.writing-detail__header {
  text-align: center;
  margin-bottom: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.writing-detail__icon {
  font-size: 32px;
}
.writing-detail__title {
  font-size: clamp(28px, 5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.022em;
  line-height: 1.15;
}
.writing-detail__meta {
  display: flex;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.writing-detail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
}
.writing-detail__cover {
  margin: 0 0 var(--space-5);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.writing-detail__cover img { width: 100%; height: auto; }
.writing-detail__lede {
  font-size: 18px;
  color: var(--text-soft);
  line-height: 1.55;
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid var(--border-soft);
}
.writing-detail__body { }
.writing-detail__nav {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-soft);
}

/* -------- Prose (markdown content) -------- */
.prose {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-soft);
}
.prose h1, .prose h2, .prose h3, .prose h4 {
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-top: 1.6em;
  margin-bottom: 0.6em;
  line-height: 1.25;
}
.prose h1 { font-size: 28px; }
.prose h2 { font-size: 22px; }
.prose h3 { font-size: 18px; }
.prose h4 { font-size: 16px; }
.prose p, .prose ul, .prose ol, .prose pre, .prose blockquote {
  margin-bottom: 1.1em;
}
.prose ul { padding-left: 1.2em; list-style: disc; }
.prose ol { padding-left: 1.2em; list-style: decimal; }
.prose li { margin-bottom: 0.3em; }
.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent);
  text-underline-offset: 2px;
}
.prose a:hover { text-decoration-color: var(--accent); }
.prose blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
  color: var(--text);
  font-style: italic;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--bg-bubble);
  padding: 1px 6px;
  border-radius: 6px;
}
.prose pre {
  background: var(--bg-bubble);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  overflow-x: auto;
}
.prose pre code {
  background: none;
  padding: 0;
}
.prose img {
  border-radius: var(--radius-md);
  margin: 1.2em auto;
}
.prose hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

/* -------- Paywall -------- */
.paywall-card {
  margin-top: var(--space-6);
  padding: var(--space-5);
  background: var(--bg-bubble);
  border-radius: var(--radius-xl);
  text-align: center;
}
.paywall-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}
.paywall-card p {
  color: var(--text-muted);
  font-size: 14px;
}

/* -------- Project detail -------- */
.project-detail__header { text-align: center; margin-bottom: var(--space-5); }
.project-detail__title {
  font-size: clamp(28px, 5vw, 38px);
  font-weight: 700;
  letter-spacing: -0.022em;
}
.project-detail__meta {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.project-detail__hero {
  position: relative;
  border-radius: var(--radius-xl);
  aspect-ratio: 16 / 10;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
}
.project-detail__hero img { width: 100%; height: 100%; object-fit: cover; }
.project-detail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: var(--space-5);
}

/* -------- Contact page -------- */
.contact-form-wrap {
  background: var(--bg-bubble);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin: var(--space-5) 0;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 540px) {
  .contact-form__row { grid-template-columns: 1fr; }
}
.contact-form__label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-soft);
}
.contact-form__optional {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 12px;
}
.contact-form__label input,
.contact-form__label textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 11px 14px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  transition: border-color .15s, background .15s, box-shadow .15s;
  resize: vertical;
}
.contact-form__label input::placeholder,
.contact-form__label textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}
.contact-form__label input:focus,
.contact-form__label textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.contact-form__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 4px;
}
.contact-form__submit {
  min-width: 160px;
  justify-content: center;
  position: relative;
}
.contact-form__submit[disabled] {
  opacity: 0.7;
  cursor: not-allowed;
}
.contact-form__spinner {
  display: none;
  animation: contact-spin 0.8s linear infinite;
}
.contact-form__submit.is-loading .contact-form__spinner { display: inline-block; }
.contact-form__submit.is-loading .contact-form__submit-label { opacity: 0.8; }
@keyframes contact-spin { to { transform: rotate(360deg); } }
.contact-form__hint {
  font-size: 12px;
  color: var(--text-muted);
  flex: 1;
  min-width: 200px;
}

.contact-form__feedback {
  margin-top: 6px;
  font-size: 14px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  display: none;
}
.contact-form__feedback--success {
  display: block;
  background: color-mix(in srgb, #10B981 14%, transparent);
  color: #047857;
  border: 1px solid color-mix(in srgb, #10B981 30%, transparent);
}
.contact-form__feedback--error {
  display: block;
  background: color-mix(in srgb, #EF4444 14%, transparent);
  color: #B91C1C;
  border: 1px solid color-mix(in srgb, #EF4444 30%, transparent);
}
html[data-theme="dark"] .contact-form__feedback--success { color: #6EE7B7; }
html[data-theme="dark"] .contact-form__feedback--error { color: #FCA5A5; }
@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .contact-form__feedback--success { color: #6EE7B7; }
  html:not([data-theme="light"]) .contact-form__feedback--error { color: #FCA5A5; }
}

.contact-form-disabled {
  margin: var(--space-5) 0;
  padding: var(--space-4);
  background: var(--bg-bubble);
  border-radius: var(--radius-md);
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}
.contact-form-disabled code {
  font-family: var(--font-mono);
  background: var(--bg);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 13px;
}

.contact-alt {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-soft);
  text-align: center;
}
.contact-alt__title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
  letter-spacing: 0.02em;
}
.contact-alt__items {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.contact-alt__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--bg-bubble);
  border-radius: var(--radius-full);
  font-size: 13px;
  color: var(--text-soft);
  transition: background .15s, color .15s, transform .15s;
}
.contact-alt__item:hover {
  background: var(--bg-bubble-hover);
  color: var(--accent);
  transform: translateY(-1px);
}
.contact-alt__item svg {
  flex-shrink: 0;
}

/* -------- Thanks page -------- */
.thanks-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  padding: var(--space-8) var(--space-4);
}
.thanks-page__icon {
  display: inline-flex;
  width: 72px;
  height: 72px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
  margin-bottom: 4px;
}
.thanks-page__title {
  font-size: clamp(28px, 5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.022em;
}
.thanks-page__desc {
  color: var(--text-muted);
  max-width: 460px;
  font-size: 15px;
  line-height: 1.6;
}
.thanks-page__actions {
  margin-top: 8px;
}

/* -------- Empty state -------- */
.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: var(--space-6) 0;
}

/* -------- 404 -------- */
.not-found {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
  padding: var(--space-8) 0;
}
.not-found__icon { font-size: 56px; }
.not-found__title { font-size: 32px; font-weight: 700; letter-spacing: -0.02em; }
.not-found__desc { color: var(--text-muted); max-width: 420px; }

/* -------- Side rail (desktop only) -------- */
.side-rail {
  position: fixed;
  top: 50%;
  right: 16px;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 40;
}
.side-rail__btn {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  transition: color .15s, background .15s, transform .15s;
}
.side-rail__btn:hover {
  color: var(--accent);
  background: var(--bg-bubble);
  transform: translateY(-1px);
}
@media (max-width: 960px) { .side-rail { display: none; } }

/* -------- Footer -------- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: var(--space-5) var(--space-4);
  margin-top: var(--space-7);
}
.site-footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: 13px;
  color: var(--text-muted);
}
.site-footer__copy { flex: 1; }
.site-footer__nav {
  display: flex;
  gap: 14px;
}
.site-footer__link:hover { color: var(--text); }

/* -------- Print -------- */
@media print {
  .site-header, .site-footer, .side-rail, .newsletter, .tag-row, .cta-row { display: none !important; }
  body { background: white; color: black; }
  .container { max-width: none; padding: 0; }
}