/* ==========================================================================
   ayushpatel.com — site stylesheet
   Lightweight, dependency-free design system: fluid type, light/dark themes,
   responsive layout, accessible components. No frameworks required.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Noto Sans KR", "Malgun Gothic",
    sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --bg: #f7f9fc;
  --bg-soft: #eef2f8;
  --surface: #ffffff;
  --surface-2: #f1f5fb;
  --text: #17222f;
  --text-soft: #43536a;
  --text-faint: #5a6b80;
  --border: #dfe6ef;
  --border-strong: #c9d4e2;
  --accent: #1d4ed8;
  --accent-strong: #1e40af;
  --accent-soft: #dbe7ff;
  --accent-text: #1d4ed8;
  --gradient: linear-gradient(135deg, #1d4ed8 0%, #2563eb 45%, #7c3aed 100%);
  --shadow-sm: 0 1px 2px rgba(23, 34, 47, 0.06);
  --shadow-md: 0 6px 24px -8px rgba(23, 34, 47, 0.14);
  --shadow-lg: 0 16px 48px -16px rgba(23, 34, 47, 0.22);
  --ring: 0 0 0 3px rgba(37, 99, 235, 0.35);
  --nav-bg: rgba(255, 255, 255, 0.82);
  --radius: 14px;
  --radius-sm: 8px;

  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0b1220;
  --bg-soft: #0e1626;
  --surface: #121c2e;
  --surface-2: #182338;
  --text: #e7edf6;
  --text-soft: #aebdd0;
  --text-faint: #8b9db3;
  --border: #223049;
  --border-strong: #2e3f5c;
  --accent: #60a5fa;
  --accent-strong: #93c5fd;
  --accent-soft: #16294d;
  --accent-text: #7db4fb;
  --gradient: linear-gradient(135deg, #2563eb 0%, #3b82f6 45%, #8b5cf6 100%);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 24px -8px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 48px -16px rgba(0, 0, 0, 0.6);
  --nav-bg: rgba(11, 18, 32, 0.82);

  color-scheme: dark;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.97rem + 0.15vw, 1.075rem);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg,
video {
  max-width: 100%;
  height: auto;
}

/* Prose links are underlined so they don't rely on color alone (WCAG 1.4.1);
   component links (buttons, cards, nav) opt out below. */
a {
  color: var(--accent-text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

.btn, .icon-btn, .brand, .chip a, .tag,
.nav-menu a, .footer-links a, .post-card, .post-nav a,
.contact-list a, .skip-link, .read-more, .theme-toggle {
  text-decoration: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  color: var(--text);
  margin: 0 0 0.6em;
  font-weight: 700;
  letter-spacing: -0.015em;
  overflow-wrap: break-word;
}

p {
  margin: 0 0 1em;
}

ul, ol {
  padding-left: 1.3em;
  margin: 0 0 1em;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

code, kbd, pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1em 0.35em;
}

pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.2rem;
  overflow-x: auto;
}

pre code {
  background: none;
  border: 0;
  padding: 0;
}

blockquote {
  margin: 0 0 1em;
  padding: 0.4em 1.2em;
  border-left: 4px solid var(--accent);
  background: var(--surface-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-soft);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.2em;
  display: block;
  overflow-x: auto;
}

th, td {
  text-align: left;
  padding: 0.55em 0.8em;
  border: 1px solid var(--border);
}

th {
  background: var(--surface-2);
}

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

:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: 4px;
}

/* ---------- Utilities ---------- */
.container {
  width: min(100% - 2.5rem, 70rem);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 200;
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 0 0 10px 10px;
  font-weight: 600;
}

.skip-link:focus {
  top: 0;
}

.muted {
  color: var(--text-soft);
}

.nowrap {
  white-space: nowrap;
}

/* ---------- Header / navigation ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: var(--nav-bg);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.08rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.brand:hover {
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--accent-soft);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  display: block;
  padding: 0.45rem 0.72rem;
  border-radius: 999px;
  color: var(--text-soft);
  font-weight: 600;
  font-size: 0.93rem;
}

.nav-menu a:hover {
  color: var(--text);
  background: var(--surface-2);
  text-decoration: none;
}

.nav-menu a.is-active {
  color: var(--accent-text);
  background: var(--accent-soft);
}

.nav-cta {
  border: 1px solid var(--border-strong);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.theme-toggle,
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  cursor: pointer;
  font-size: 1.05rem;
  transition: background 0.2s ease, color 0.2s ease;
}

.theme-toggle:hover,
.nav-toggle:hover {
  color: var(--text);
  background: var(--surface-2);
}

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: inline; }
[data-theme="dark"] .theme-toggle .icon-sun { display: inline; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.nav-toggle {
  display: none;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1.25rem;
    left: 1.25rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 0.6rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }

  .nav-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-menu a {
    padding: 0.7rem 0.9rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(7rem, 16vh, 9.5rem) 0 clamp(3rem, 7vw, 5rem);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(38rem 24rem at 12% -8%, var(--accent-soft), transparent 60%),
    radial-gradient(30rem 22rem at 95% 10%, rgba(124, 58, 237, 0.14), transparent 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-text);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  margin-bottom: 1.1rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.35em;
}

.hero h1 .accent {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-role {
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: var(--text-soft);
  max-width: 38em;
  margin-bottom: 1.4rem;
}

.hero-role strong {
  color: var(--text);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.8rem;
  padding: 0;
  list-style: none;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
}

.hero-photo {
  position: relative;
  justify-self: center;
}

.hero-photo img {
  width: clamp(180px, 24vw, 280px);
  height: clamp(180px, 24vw, 280px);
  object-fit: cover;
  border-radius: 50%;
  border: 5px solid var(--surface);
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 1;
}

.hero-photo::before {
  content: "";
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  background: var(--gradient);
  opacity: 0.9;
  filter: blur(0.5px);
  z-index: 0;
  animation: spin 14s linear infinite;
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 14px), #000 calc(100% - 13px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 14px), #000 calc(100% - 13px));
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.hero-social {
  display: flex;
  gap: 0.55rem;
  margin-top: 1.6rem;
  flex-wrap: wrap;
}

@media (max-width: 800px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-photo {
    order: -1;
  }

  .hero-badges,
  .hero-actions,
  .hero-social {
    justify-content: center;
  }

  .hero-role {
    margin-inline: auto;
  }
}

/* ---------- Buttons, chips, tags ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.68rem 1.35rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.97rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--accent-strong);
  color: #fff;
}

[data-theme="dark"] .btn-primary {
  color: #0b1220;
}

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  background: var(--surface-2);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.95rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-soft);
  box-shadow: var(--shadow-sm);
}

.chip .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient);
  flex: none;
}

.tag {
  display: inline-block;
  padding: 0.18rem 0.65rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-text);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.7rem;
  height: 2.7rem;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 1.15rem;
  transition: transform 0.15s ease, color 0.2s ease, border-color 0.2s ease;
}

.icon-btn:hover {
  transform: translateY(-3px);
  color: var(--accent-text);
  border-color: var(--accent);
  text-decoration: none;
}

/* ---------- Sections ---------- */
.section {
  padding: clamp(3rem, 7vw, 5rem) 0;
}

.section-alt {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  max-width: 46em;
  margin-bottom: clamp(1.8rem, 4vw, 2.8rem);
}

.section-head .eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin-bottom: 0.5rem;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3.6vw, 2.3rem);
  margin-bottom: 0.35em;
}

.section-head p {
  color: var(--text-soft);
  margin: 0;
}

/* ---------- Section sub-headings ---------- */
.sub-head {
  margin: 2.8rem 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sub-head h3 {
  font-size: 1.3rem;
  margin: 0;
  white-space: nowrap;
}

.sub-head::after {
  content: "";
  flex: 1;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(to right, var(--accent-soft), transparent);
}

/* ---------- Cards & grids ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.6rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.card h3 {
  font-size: 1.12rem;
  margin-bottom: 0.3em;
}

.card .meta {
  font-size: 0.85rem;
  color: var(--text-faint);
  font-weight: 600;
  margin-bottom: 0.6em;
}

.card p {
  color: var(--text-soft);
  font-size: 0.96rem;
}

.card ul {
  color: var(--text-soft);
  font-size: 0.96rem;
  margin-bottom: 0;
}

.card li + li {
  margin-top: 0.35em;
}

.card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.9rem;
}

/* Equal-height tiles: grid cards stretch, tags pin to the bottom edge */
.grid .card {
  display: flex;
  flex-direction: column;
}

.grid .card .tags {
  margin-top: auto;
  padding-top: 0.9rem;
}

.grid .card .tags:first-child {
  padding-top: 0;
}

.cert-card h3 {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
}

.cert-card h3 .icon {
  flex: none;
  margin-top: 0.18em;
  color: var(--accent-text);
}

.cert-card p {
  margin-bottom: 0;
}

.event-card {
  border-left: 4px solid var(--accent);
  background: linear-gradient(135deg, var(--accent-soft), var(--surface) 45%);
}

.event-card .meta .icon {
  color: var(--accent-text);
}

.grid {
  display: grid;
  gap: 1.2rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 800px) {
  .about-grid { grid-template-columns: 1fr; }
}

.facts {
  display: grid;
  gap: 0.85rem;
  margin: 0;
}

.facts div {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.6rem;
  align-items: baseline;
}

.facts dt {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.facts dd {
  margin: 0;
  color: var(--text-soft);
  overflow-wrap: anywhere;
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 9px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), rgba(124, 58, 237, 0.55));
  border-radius: 2px;
}

.timeline > li {
  position: relative;
  padding: 0 0 1.6rem 2.2rem;
}

.timeline > li:last-child {
  padding-bottom: 0.2rem;
}

/* Dots sit on top of the line; no halo, so the line reads as continuous */
.timeline > li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--surface);
  border: 3px solid var(--accent);
}

.timeline .t-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.05rem 1.3rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.25s ease;
}

.timeline .t-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.timeline .t-time {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-text);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.15rem 0.7rem;
  margin-bottom: 0.45rem;
}

.timeline .t-title {
  font-size: 1.06rem;
  font-weight: 700;
  margin: 0 0 0.15em;
}

.timeline .t-org {
  color: var(--text-soft);
  font-weight: 600;
  font-size: 0.93rem;
  margin: 0 0 0.2em;
}

.timeline .t-desc {
  color: var(--text-soft);
  font-size: 0.94rem;
  margin: 0.3em 0 0;
}

/* Timelines are a single continuous rail spanning the same width as every
   other section, with a touch more breathing room on large screens. */
@media (min-width: 900px) {
  .timeline > li {
    padding-left: 2.6rem;
  }

  .timeline .t-card {
    padding: 1.2rem 1.6rem;
  }
}

/* ---------- Travel flags ---------- */
.travel-flags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.travel-flags li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  min-width: 4.6rem;
}

.travel-flags .fi {
  width: 3.2rem;
  line-height: 2.4rem;
  border-radius: 6px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.travel-flags span.label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-faint);
}

/* ---------- Photo gallery ---------- */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
}

.photo-grid figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.25s ease;
}

.photo-grid figure:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.photo-grid img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  display: block;
}

.photo-grid figcaption {
  padding: 0.65rem 0.95rem;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-faint);
}

@media (max-width: 900px) {
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
}

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

  .photo-grid img { aspect-ratio: 4 / 4.4; }
}

.community-feature {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 1.2rem;
  align-items: stretch;
  margin-top: 2rem;
}

.event-stack {
  display: grid;
  gap: 1.2rem;
  align-content: stretch;
}

.event-stack .card {
  margin: 0;
}

.map-embed {
  margin-top: 1rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 4 / 3;
  background: var(--surface-2);
}

.map-embed iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.community-feature .photo-card {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  background: var(--surface);
  display: flex;
  flex-direction: column;
}

.community-feature .photo-card img {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
  object-position: 50% 22%;
  display: block;
  flex: 1;
}

.community-feature .photo-card figcaption {
  padding: 0.7rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-faint);
}

@media (max-width: 800px) {
  .community-feature { grid-template-columns: 1fr; }
}

/* ---------- Blog list ---------- */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.2rem;
}

.post-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  box-shadow: var(--shadow-sm);
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.25s ease, border-color 0.2s ease;
}

.post-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
  text-decoration: none;
}

.post-card .p-meta {
  font-size: 0.84rem;
  color: var(--text-faint);
  font-weight: 600;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  margin-bottom: 0.4rem;
}

.post-card h3 {
  font-size: 1.18rem;
  margin-bottom: 0.25em;
  color: var(--text);
}

.post-card p {
  color: var(--text-soft);
  margin: 0;
  font-size: 0.96rem;
}

.post-card .read-more {
  display: inline-block;
  margin-top: 0.7rem;
  font-weight: 700;
  color: var(--accent-text);
  font-size: 0.92rem;
}

/* ---------- Post page ---------- */
.post-hero {
  padding: clamp(7rem, 16vh, 9rem) 0 1rem;
}

.post-hero h1 {
  font-size: clamp(1.9rem, 4.5vw, 2.8rem);
  max-width: 22em;
}

.post-hero .p-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  color: var(--text-faint);
  font-weight: 600;
  font-size: 0.92rem;
}

.post-body {
  max-width: 46em;
  font-size: 1.05rem;
}

.post-body img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.post-body h2 {
  margin-top: 1.6em;
  font-size: 1.5rem;
}

.post-body h3 {
  margin-top: 1.3em;
  font-size: 1.2rem;
}

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
}

.post-nav a {
  display: block;
  padding: 1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text-soft);
  font-weight: 600;
  font-size: 0.92rem;
}

.post-nav a:hover {
  border-color: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
}

.post-nav .next {
  text-align: right;
}

.post-nav span {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  margin-bottom: 0.25rem;
}

@media (max-width: 640px) {
  .post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav .next {
    text-align: left;
  }
}

.share-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2rem;
}

.share-row .label {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-faint);
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.8rem;
}

.contact-list a {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text-soft);
  font-weight: 600;
  transition: border-color 0.2s ease, transform 0.15s ease;
}

.contact-list a:hover {
  border-color: var(--accent);
  color: var(--accent-text);
  transform: translateY(-2px);
  text-decoration: none;
}

.contact-list .fa {
  width: 1.4rem;
  text-align: center;
  color: var(--accent-text);
  font-size: 1.1rem;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 2.6rem 0 2.2rem;
  margin-top: 2rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  text-align: center;
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 1.4rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.92rem;
}

.footer-links a {
  color: var(--text-soft);
  font-weight: 600;
}

.site-footer .copyright {
  color: var(--text-faint);
  font-size: 0.88rem;
  margin: 0;
}

/* ---------- 404 ---------- */
.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  text-align: center;
  padding-top: 6rem;
}

.error-page .code {
  font-size: clamp(4rem, 14vw, 7rem);
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 0.2em;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* No-JS and reduced-motion: show everything, no animation */
.no-js .reveal {
  opacity: 1;
  transform: none;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

/* ---------- Print ---------- */
@media print {
  .site-header,
  .site-footer,
  .hero-actions,
  .hero-social,
  .theme-toggle,
  .nav-toggle,
  .share-row,
  .post-nav {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card,
  .t-card,
  .post-card {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
  }

  .hero {
    padding-top: 1rem;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #555;
  }
}