/* ============================================================
   thedaryltan.com — Design System
   Editorial-technical dark. Playfair Display + Source Serif 4 + IBM Plex Mono.
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,500;1,8..60,300;1,8..60,400&family=IBM+Plex+Mono:wght@300;400;500&display=swap');

/* --- CSS Variables --- */
:root {
  --bg:           #0e0e0e;
  --bg-2:         #141414;
  --surface:      #1f1f1f;
  --border:       #2a2a2a;
  --text:         #e8e2d9;
  --text-2:       #a89f94;
  --text-3:       #6b6460;
  --accent:       #c9943a;
  --accent-dim:   #8a6428;
  --accent-glow:  rgba(201, 148, 58, 0.12);

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'Source Serif 4', Georgia, serif;
  --font-mono:    'IBM Plex Mono', 'Courier New', monospace;

  --max-width:    1140px;
  --reading-width: 680px;

  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   2rem;
  --space-lg:   4rem;
  --space-xl:   7rem;

  --radius:     4px;
  --radius-lg:  8px;

  --transition: 0.22s ease;
}

/* --- Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 18px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* --- Grain Overlay --- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.7rem); }
h4 { font-size: 1.15rem; }

p {
  color: var(--text-2);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

p:last-child { margin-bottom: 0; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

a:hover { color: var(--text); }

strong { color: var(--text); font-weight: 600; }

em { font-style: italic; }

code, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.1em 0.4em;
  color: var(--accent);
}

pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-dim);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  overflow-x: auto;
  line-height: 1.7;
  color: var(--text-2);
  margin: 1.5rem 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

blockquote {
  border-left: 2px solid var(--accent-dim);
  padding-left: 1.5rem;
  margin: 2rem 0;
  color: var(--text-2);
  font-style: italic;
  font-size: 1.05rem;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}

ul, ol {
  color: var(--text-2);
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

li { margin-bottom: 0.4rem; }

/* --- Section Label --- */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.section-label::before {
  content: '';
  display: block;
  width: 2rem;
  height: 1px;
  background: var(--accent-dim);
  flex-shrink: 0;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--narrow {
  max-width: var(--reading-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-xl) 0;
}

section.alt-bg {
  background: var(--bg-2);
}

/* --- Navigation --- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition), border-bottom var(--transition);
}

.site-nav.scrolled {
  background: rgba(14, 14, 14, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: color var(--transition);
}

.nav-logo span {
  color: var(--accent);
}

.nav-logo:hover { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--text-2);
  transition: transform var(--transition), opacity var(--transition);
}

/* --- Hero --- */
.hero {
  padding: calc(var(--space-xl) + 4rem) 0 var(--space-xl);
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-eyebrow::before {
  content: '';
  display: block;
  width: 2rem;
  height: 1px;
  background: var(--accent-dim);
}

.hero h1 {
  max-width: 800px;
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.hero h1 em {
  font-style: italic;
  color: var(--text-2);
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--text-2);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #0e0e0e;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-secondary {
  background: transparent;
  color: var(--text-2);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent-dim);
  color: var(--text);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border-color: transparent;
  padding-left: 0;
  padding-right: 0;
}

.btn-ghost:hover {
  color: var(--text);
  gap: 0.75rem;
}

.btn-ghost::after {
  content: '→';
  transition: transform var(--transition);
}

.btn-ghost:hover::after {
  transform: translateX(3px);
}

/* --- Cards --- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
}

.card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-2px);
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: block;
}

.card-date {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-3);
  letter-spacing: 0.08em;
}

.card h3 {
  font-size: 1.2rem;
  margin: 0.5rem 0 0.75rem;
  line-height: 1.3;
}

.card p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

/* --- Grid layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* --- About Strip (Homepage) --- */
.about-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.cert-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  color: var(--accent);
  background: var(--accent-glow);
}

/* --- Blog List --- */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.blog-list-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 2rem;
  align-items: baseline;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: background var(--transition);
}

.blog-list-item:first-child {
  border-top: 1px solid var(--border);
}

.blog-list-item:hover .blog-item-title {
  color: var(--accent);
}

.blog-item-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.blog-item-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.4rem;
}

.blog-item-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.3;
  transition: color var(--transition);
}

.blog-item-excerpt {
  font-size: 0.85rem;
  color: var(--text-3);
  line-height: 1.6;
  margin-top: 0.35rem;
}

.blog-item-read {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-3);
  white-space: nowrap;
}

.blog-list-item.placeholder {
  opacity: 0.35;
  pointer-events: none;
}

/* --- Blog Filters --- */
.blog-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 0.9rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-3);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--accent-dim);
  color: var(--accent);
  background: var(--accent-glow);
}

/* --- Post Article --- */
.post-header {
  padding: calc(var(--space-xl) + 4rem) 0 var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.post-meta-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.post-meta-date,
.post-meta-read {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

.post-meta-sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--border);
}

.post-title {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  max-width: 800px;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.post-lead {
  font-size: 1.15rem;
  color: var(--text-2);
  max-width: 640px;
  line-height: 1.7;
  font-style: italic;
}

/* Post layout: content + sidebar */
.post-layout {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 5rem;
  align-items: start;
  padding: var(--space-lg) 0;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.post-content h2 {
  font-size: 1.5rem;
  margin: 2.5rem 0 1rem;
}

.post-content h3 {
  font-size: 1.2rem;
  margin: 2rem 0 0.75rem;
}

.post-content p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-2);
}

.post-sidebar {
  position: sticky;
  top: 6rem;
}

.toc {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
}

.toc-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1rem;
}

.toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc;
}

.toc li {
  counter-increment: toc;
  margin-bottom: 0.5rem;
}

.toc a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-3);
  text-decoration: none;
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  line-height: 1.4;
  transition: color var(--transition);
}

.toc a::before {
  content: counter(toc, decimal-leading-zero);
  color: var(--border);
  font-size: 0.65rem;
  flex-shrink: 0;
}

.toc a:hover { color: var(--accent); }

.post-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --- Portfolio --- */
.case-study {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  align-items: start;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}

.case-study:first-child {
  border-top: 1px solid var(--border);
}

.case-study-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--border);
  line-height: 1;
  padding-top: 0.2rem;
}

.case-study h3 {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}

.case-study p {
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-3);
}

.status-badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.status-badge::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.status-badge.in-progress {
  background: rgba(201, 148, 58, 0.1);
  color: var(--accent);
  border: 1px solid var(--accent-dim);
}

.status-badge.in-progress::before {
  background: var(--accent);
}

.status-badge.planned {
  background: var(--surface);
  color: var(--text-3);
  border: 1px solid var(--border);
}

.status-badge.planned::before {
  background: var(--text-3);
}

.status-badge.complete {
  background: rgba(74, 180, 120, 0.1);
  color: #4ab478;
  border: 1px solid rgba(74, 180, 120, 0.3);
}

.status-badge.complete::before {
  background: #4ab478;
}

.case-study.placeholder {
  opacity: 0.45;
}

/* --- About Page --- */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 5rem;
  align-items: start;
}

.about-sidebar {
  position: sticky;
  top: 6rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sidebar-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
}

.sidebar-block-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1rem;
}

.sidebar-certs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sidebar-cert {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sidebar-cert.active::before {
  content: '●';
  color: var(--accent);
  font-size: 0.5rem;
}

.sidebar-cert.pending::before {
  content: '○';
  color: var(--text-3);
  font-size: 0.5rem;
}

.sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-list li {
  font-size: 0.85rem;
  color: var(--text-2);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.sidebar-list li:last-child {
  border-bottom: none;
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 1px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.4rem;
  top: 0.5rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--bg);
}

.timeline-item.highlight::before {
  background: var(--accent);
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-3);
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.timeline-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.timeline-body {
  font-size: 0.9rem;
  color: var(--text-3);
  line-height: 1.7;
  margin: 0;
}

/* --- Contact --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: border-color var(--transition), transform var(--transition);
}

.contact-link:hover {
  border-color: var(--accent-dim);
  transform: translateX(4px);
  color: var(--text);
}

.contact-link-icon {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  width: 2rem;
  text-align: center;
}

.contact-link-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  display: block;
  margin-bottom: 0.2rem;
}

.contact-link-value {
  font-size: 0.9rem;
  color: var(--text-2);
}

/* --- Contact Form --- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.form-input,
.form-textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text);
  width: 100%;
  transition: border-color var(--transition);
  outline: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent-dim);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-3);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
  line-height: 1.7;
}

.form-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.6rem 1rem;
  border-radius: var(--radius);
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(74, 180, 120, 0.1);
  border: 1px solid rgba(74, 180, 120, 0.3);
  color: #4ab478;
}

.form-status.error {
  display: block;
  background: rgba(220, 80, 80, 0.1);
  border: 1px solid rgba(220, 80, 80, 0.3);
  color: #dc5050;
}

/* --- Footer --- */
.site-footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 3rem 0;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-3);
  text-decoration: none;
  letter-spacing: 0.05em;
}

.footer-logo span { color: var(--accent); }

.footer-nav {
  display: flex;
  gap: 1.75rem;
  list-style: none;
}

.footer-nav a {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-nav a:hover { color: var(--accent); }

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

/* --- Scroll animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }

/* --- Page header (non-hero pages) --- */
.page-header {
  padding: calc(var(--space-xl) + 3rem) 0 var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 0.75rem;
}

.page-header p {
  font-size: 1rem;
  max-width: 560px;
  color: var(--text-2);
}

/* --- Photo placeholder --- */
.photo-placeholder {
  aspect-ratio: 3/4;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  letter-spacing: 0.1em;
}

.profile-photo {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: block;
}

/* --- Utility --- */
.text-accent { color: var(--accent); }
.text-muted  { color: var(--text-3); }
.text-mono   { font-family: var(--font-mono); }
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }

/* --- Cert Cards --- */
.cert-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color var(--transition), transform var(--transition);
}

.cert-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-2px);
}

.cert-card--pending {
  opacity: 0.7;
  border-style: dashed;
}

.cert-card--pending:hover {
  opacity: 1;
}

.cert-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.cert-card-issuer {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.cert-card-name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.cert-card-full {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.cert-card-desc {
  font-size: 0.85rem;
  color: var(--text-3);
  line-height: 1.7;
  margin-bottom: 0;
}

/* --- Cert card as link --- */
a.cert-card {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

a.cert-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-2px);
  color: inherit;
}

a.cert-card:hover .cert-card-name {
  color: var(--accent);
}

/* --- Event Cards --- */
.event-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.event-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-dim);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color var(--transition);
}

.event-card:hover { border-left-color: var(--accent); }

.event-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.event-card-org {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.event-card-date {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

.event-card-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.event-card-desc {
  font-size: 0.85rem;
  color: var(--text-3);
  line-height: 1.7;
  margin: 0;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  :root {
    --space-xl: 5rem;
    --space-lg: 3rem;
  }

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

  .about-strip { grid-template-columns: 1fr; gap: 3rem; }
  .about-layout { grid-template-columns: 1fr; }
  .about-sidebar { position: static; }
  .cert-cards { grid-template-columns: 1fr; }

  .contact-layout { grid-template-columns: 1fr; gap: 3rem; }

  .post-layout { grid-template-columns: 1fr; }
  .post-sidebar { display: none; }

  .blog-list-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .blog-item-read { display: none; }

  .case-study { grid-template-columns: 1fr; }
  .case-study-num { display: none; }

  .hero { min-height: 80vh; }
}

@media (max-width: 640px) {
  html { font-size: 16px; }

  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: var(--bg);
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    z-index: 99;
  }
  .nav-links.open a {
    font-size: 1rem;
    letter-spacing: 0.1em;
  }
  .nav-toggle { display: flex; z-index: 101; }

  .hero-stats { gap: 1.5rem; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-nav { flex-wrap: wrap; gap: 1rem; }

  .hero-actions { flex-direction: column; align-items: flex-start; }
}