/* =========================================================
   VAL YERMAKOVA — yermakova.com
   Retro Surreal Aesthetic
   ========================================================= */

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

:root {
  /* Retro surreal palette — pulled from the astronaut clip */
  --parchment:       #F2E6D0;
  --parchment-mid:   #D9C4A0;
  --parchment-dark:  #B09070;
  --parchment-vdark: #8A6A48;
  --stone:           #1A2A2A;
  --stone-mid:       #2A3E3E;
  --ink:             #1A1410;
  --ink-faded:       #5A4A38;
  --gold:            #D4956A;
  --crimson:         #A04040;
  --teal:            #5B8E8E;
  --teal-dark:       #3A6868;
  --coral:           #E8956B;
  --sky:             #8ABCB8;
  --deep-blue:       #2E3A5C;
  --burnt-orange:    #C4713B;

  --font-display: 'Outfit', 'Helvetica Neue', Arial, sans-serif;
  --font-body:    'Outfit', 'Helvetica Neue', Arial, sans-serif;

  /* Home (rock) dimensions */
  --poly-w: min(88vw, 1140px);
  --poly-h: min(90vh, 900px);

  /* Expand timing */
  --expand-dur: 0.72s;
  --expand-ease: cubic-bezier(0.16,1,0.3,1);
}

html { height: 100%; }

body {
  min-height: 100vh;
  background: var(--stone);
  font-family: var(--font-body);
  color: var(--ink);
  overflow: hidden;
}

/* ── Background Layer ───────────────────────────────────── */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  background: #0A1616;
}
.bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  will-change: transform;
  transform: translateZ(0);
}

/* ── Polygon Wrapper ────────────────────────────────────── */
.polygon-wrapper {
  position: fixed;
  z-index: 10;
  top: 50%;
  left: 50%;
}

/* ── Polygon Page — Jagged Rock Shape ──────────────────── */
.polygon-page {
  width: var(--poly-w);
  height: var(--poly-h);
  background: rgba(242, 230, 208, 0.72);

  /* Boulder silhouette — smooth dome, vertical left, curved right slope, flat base */
  clip-path: polygon(
    /* Sharp corner: vertical left meets dome curve */
    3% 10%,
    /* Dome — smooth curve, many points (peak ~40% from left) */
    6% 6%,     10% 3%,    16% 1%,
    22% 0%,    28% 0%,    35% 0%,    42% 0%,
    49% 0%,    55% 1%,    61% 2%,    67% 3%,
    /* Right shoulder — smooth descent */
    73% 5%,    80% 6%,    88% 7%,
    /* Sharp corner: dome meets steep right slope */
    94% 10%,
    /* Right slope — smooth curve down to base */
    96% 16%,   97% 24%,   98% 33%,   98% 42%,
    99% 52%,   99% 62%,   99% 72%,   100% 82%,
    /* Sharp corner: slope meets flat base */
    100% 90%,  99% 96%,
    /* Base — flat */
    95% 100%,  85% 100%,
    75% 100%,  65% 100%,  55% 100%,  45% 100%,
    35% 100%,  25% 100%,  15% 100%,  5% 100%,
    /* Sharp corner: base meets vertical left side */
    1% 97%,    0% 90%,
    /* Left side — nearly vertical, straight */
    0% 82%,    0% 74%,    0% 66%,    0% 57%,
    0% 48%,    0% 39%,    1% 28%,    2% 18%
  );

  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  transform-style: preserve-3d;
  will-change: transform, clip-path, width, height;
  padding: 90px 70px 100px;

  transition:
    width  var(--expand-dur) var(--expand-ease),
    height var(--expand-dur) var(--expand-ease),
    clip-path var(--expand-dur) var(--expand-ease),
    padding var(--expand-dur) var(--expand-ease);
}

/* EXPANDED state — smooths out to near-rectangle but keeps jagged top */
.polygon-page.expanded {
  width: 100vw;
  height: 100vh;
  background: var(--parchment);
  padding: 0;
  clip-path: polygon(
    /* Top edge */
    1% 1%,     8% 0%,     14% 1%,    20% 0%,
    26% 1%,    32% 0%,    38% 1%,    44% 0%,
    50% 1%,    58% 0%,    66% 1%,    74% 0%,
    /* Right turn + right edge */
    82% 1%,    90% 0%,    96% 1%,    100% 3%,
    100% 12%,  100% 22%,  100% 32%,  100% 42%,
    100% 52%,  100% 62%,  100% 72%,  100% 82%,
    /* Bottom turn + bottom edge */
    100% 90%,  100% 96%,  96% 100%,  88% 100%,
    78% 100%,  68% 100%,  58% 100%,  48% 100%,
    38% 100%,  28% 100%,  18% 100%,  8% 100%,
    /* Left turn + left edge */
    2% 100%,   0% 96%,    0% 86%,    0% 76%,
    0% 66%,    0% 56%,    0% 46%,    0% 36%,
    0% 26%,    0% 12%
  );
}

/* Parchment grain texture */
.parchment-texture {
  position: absolute;
  inset: 0;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='250' height='250'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='250' height='250' filter='url(%23n)' opacity='0.048'/%3E%3C/svg%3E");
  background-size: 250px 250px;
  mix-blend-mode: multiply;
  pointer-events: none;
  z-index: 100;
}

/* Parchment vignette edges */
.polygon-page::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 80% 80% at 50% 50%,
    transparent 60%,
    rgba(140,100,50,0.10) 100%
  );
  pointer-events: none;
  z-index: 99;
}

/* ── Site Header ────────────────────────────────────────── */
.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: -90px -70px 0;
  padding: 90px 70px 22px;
  border-bottom: 1px solid rgba(90,70,40,0.15);
  flex-shrink: 0;
  background: linear-gradient(180deg, rgba(242,230,208,0.45) 0%, rgba(242,230,208,0.30) 100%);
  transition:
    padding var(--expand-dur) var(--expand-ease),
    margin var(--expand-dur) var(--expand-ease);
}

.polygon-page.expanded .site-header {
  margin: 0;
  padding: 28px 56px 22px;
}

.site-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faded);
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 2px;
}

.tab-btn {
  font-family: var(--font-body);
  font-size: 1rem;
  font-style: normal;
  background: none;
  border: none;
  color: var(--ink-faded);
  cursor: pointer;
  padding: 4px 18px;
  letter-spacing: 0.03em;
  position: relative;
  transition: color 0.2s;
}
.tab-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 18px; right: 18px;
  height: 2px;
  background: var(--parchment-dark);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}
.tab-btn:hover          { color: var(--ink); }
.tab-btn:hover::after   { transform: scaleX(1); }
.tab-btn.active         { color: var(--ink); }
.tab-btn.active::after  { transform: scaleX(1); }

.tab-sep {
  color: var(--parchment-dark);
  font-size: 0.75rem;
  user-select: none;
}

/* ── Tab Panels ─────────────────────────────────────────── */
.tab-panel {
  display: none;
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
  z-index: 1;
  scrollbar-width: thin;
  scrollbar-color: var(--parchment-dark) transparent;
}
.tab-panel::-webkit-scrollbar       { width: 4px; }
.tab-panel::-webkit-scrollbar-track { background: transparent; }
.tab-panel::-webkit-scrollbar-thumb { background: var(--parchment-dark); border-radius: 2px; }

.tab-panel.active {
  display: flex;
  flex-direction: column;
}

@keyframes panel-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.tab-panel.active { animation: panel-in 0.38s ease both; }

/* ── HOME TAB ───────────────────────────────────────────── */
#tab-home {
  flex-direction: row;
  align-items: center;
  gap: 36px;
  padding: 20px 40px;
}

.home-photo {
  order: 2;
  flex-shrink: 0;
  height: 80%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  filter:
    drop-shadow(3px 0 0 var(--burnt-orange))
    drop-shadow(-3px 0 0 var(--burnt-orange))
    drop-shadow(0 3px 0 var(--burnt-orange))
    drop-shadow(0 -3px 0 var(--burnt-orange));
}
.home-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
  clip-path: polygon(
    4% 0%,    12% 1%,   22% 0%,   35% 1%,
    48% 0%,   60% 1%,   72% 0%,   84% 1%,   96% 0%,
    100% 4%,  99% 14%,  100% 26%, 99% 38%,
    100% 50%, 99% 62%,  100% 74%, 99% 86%,
    100% 96%, 95% 100%, 82% 99%,  68% 100%,
    54% 99%,  40% 100%, 26% 99%,  12% 100%,
    2% 98%,   0% 88%,   1% 76%,   0% 64%,
    1% 52%,   0% 40%,   1% 28%,   0% 16%,
    1% 6%
  );
}

.home-inner {
  display: flex;
  flex-direction: column;
  align-self: stretch;
  flex: 1;
  min-width: 0;
  order: 1;
  padding: 0;
}

.home-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 36px 40px;
  gap: 0;
  max-width: none;
  width: auto;
}

.home-hero {
  margin-bottom: 28px;
  padding-bottom: 0;
}

.home-eyebrow {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 16px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 5.5vw, 5rem);
  font-weight: 300;
  line-height: 1.0;
  color: var(--ink);
}
.hero-title em {
  font-style: italic;
  color: var(--teal-dark);
}
.val-accent {
  color: var(--deep-blue);
}

.home-aside {
  display: flex;
  flex-direction: column;
}

.home-deco {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.star-spin {
  font-size: 1.6rem;
  color: var(--coral);
  display: inline-block;
  animation: star-spin 18s linear infinite;
  flex-shrink: 0;
}
@keyframes star-spin { to { transform: rotate(360deg); } }
.deco-rule {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--parchment-dark), transparent);
}

.bio-text {
  font-size: 2.0rem;
  line-height: 1.2;
  font-style: normal;
  color: var(--ink-faded);
  margin-bottom: 14px;
}

.bio-sub {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink-faded);
  opacity: 0.7;
  margin-bottom: 40px;
}

.bio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 12px;
}
.tag {
  font-family: var(--font-display);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid var(--teal);
  color: var(--teal-dark);
  padding: 4px 12px;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.tag:hover { border-color: var(--coral); color: var(--coral); }

.home-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.home-link {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.05em;
  color: var(--ink-faded);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.home-link:hover { color: var(--coral); border-bottom-color: var(--coral); }
.link-icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.12em;
  margin-right: 5px;
}
.link-sep { color: var(--parchment-dark); font-size: 0.7rem; }

.home-foot {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px 20px;
}
.foot-rule {
  flex: 1;
  height: 1px;
  background: var(--parchment-mid);
}
.foot-domain {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--parchment-dark);
}
.foot-text {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--burnt-orange);
  white-space: nowrap;
}

/* ── Panel Shared ────────────────────────────────────────── */
.panel-inner {
  padding: 40px 60px 200px;
  min-height: 100%;
}

.panel-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(90,70,40,0.14);
}
.section-title {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 300;
  font-style: normal;
  color: var(--ink);
  margin-bottom: 5px;
}
.section-sub {
  font-size: 1rem;
  font-style: italic;
  color: var(--ink-faded);
}

/* ── THOUGHTS TAB ───────────────────────────────────────── */
.posts-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.post-card {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}

.post-img-wrap { overflow: hidden; }

.post-img {
  width: 100%;
  height: 300px;
  position: relative;
  overflow: hidden;
  background: var(--parchment-mid);
  transition: transform 0.5s ease, filter 0.4s ease;
  cursor: pointer;
}
.post-img:hover {
  transform: scale(1.05);
  filter: contrast(1.12) saturate(1.1);
}
.post-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.post-body {
  padding: 16px 4px 20px;
}

/* ── PROJECTS TAB ───────────────────────────────────────── */

/* Card preview (list view) */
.projects-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 50%;
  margin: 0 auto;
}

.project-card-preview {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}
.project-card-preview:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}

.proj-preview-media {
  width: 100%;
  border: 1px solid rgba(90,70,40,0.12);
}
.proj-preview-media video,
.proj-preview-media img {
  width: 100%;
  display: block;
}

.proj-preview-body {
  padding: 20px 4px 24px;
}
.proj-preview-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 500;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 12px;
}
.proj-preview-body .proj-tags {
  margin-bottom: 14px;
}
.proj-preview-excerpt {
  font-size: 1.15rem;
  line-height: 1.72;
  color: var(--ink-faded);
}

/* Detail view */
.project-detail {
  display: none;
}
.panel-inner.showing-detail .projects-list {
  display: none;
}
.panel-inner.showing-detail .project-detail {
  display: block;
  animation: panel-in 0.32s ease both;
  max-width: 680px;
  margin: 0 auto;
}

.proj-detail-hero {
  width: 100%;
  margin-bottom: 28px;
}
.proj-detail-hero video,
.proj-detail-hero img {
  width: 100%;
  display: block;
}

.proj-detail-title {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 400;
  font-style: italic;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 12px;
}

.proj-detail-link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #F2E6D0;
  background: linear-gradient(135deg, #2E3A5C 0%, #3A6868 50%, #1A2A2A 100%);
  text-decoration: none;
  border: 1px solid rgba(138,188,184,0.3);
  padding: 16px 36px;
  margin-top: 24px;
  margin-bottom: 32px;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
  box-shadow: 0 4px 20px rgba(26,42,42,0.25), inset 0 1px 0 rgba(138,188,184,0.15);
}
.proj-detail-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(26,42,42,0.35), inset 0 1px 0 rgba(138,188,184,0.25);
  border-color: rgba(138,188,184,0.5);
  color: #F2E6D0;
}

.proj-detail-content {
  font-size: 1.15rem;
  line-height: 1.82;
  color: var(--ink-faded);
  margin-top: 20px;
  padding-bottom: 200px;
}
.proj-detail-content p { margin-bottom: 16px; }
.proj-detail-content h4 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--ink);
  margin: 28px 0 10px;
}
.proj-detail-content blockquote {
  border-left: 2px solid var(--coral);
  padding-left: 18px;
  margin: 18px 0;
  font-style: italic;
  color: var(--ink-faded);
}
.proj-detail-content ul, .proj-detail-content ol {
  padding-left: 22px;
  margin: 12px 0;
}
.proj-detail-content li { margin-bottom: 6px; }
.proj-detail-content a { color: var(--coral); text-decoration: underline; }
.proj-detail-content strong { color: var(--ink); }


/* shared text styles */
.post-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.post-meta-sep {
  color: var(--parchment-dark);
  font-size: 1rem;
}
.post-read-time,
.post-category {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--parchment-dark);
}
.post-category {
  color: var(--coral);
}
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 10px;
}
.post-tag {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid var(--parchment-mid);
  color: var(--ink-faded);
  padding: 3px 10px;
}

/* ── Post Detail View ────────────────────────────────── */
.post-detail {
  display: none;
}
.panel-inner.showing-detail .posts-list,
.panel-inner.showing-detail .panel-header {
  display: none;
}
.panel-inner.showing-detail .post-detail {
  display: block;
  animation: panel-in 0.32s ease both;
  max-width: 680px;
  margin: 0 auto;
}

.post-back-btn {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: var(--ink-faded);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 0 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  margin-bottom: 28px;
}
.post-back-btn:hover {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

.post-detail-hero {
  width: 100%;
  max-height: 480px;
  overflow: hidden;
  margin-bottom: 28px;
}
.post-detail-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.post-detail-title {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 400;
  font-style: italic;
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 12px;
}

.post-detail-content {
  font-size: 1.15rem;
  line-height: 1.82;
  color: var(--ink-faded);
  margin-top: 20px;
  padding-bottom: 200px;
}
.post-detail-content p {
  margin-bottom: 16px;
}
.post-detail-content h2 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 500;
  color: var(--ink);
  margin: 28px 0 10px;
}
.post-detail-content blockquote {
  border-left: 2px solid var(--coral);
  padding-left: 18px;
  margin: 18px 0;
  font-style: italic;
  color: var(--ink-faded);
}
.post-detail-content ul, .post-detail-content ol {
  padding-left: 22px;
  margin: 12px 0;
}
.post-detail-content li {
  margin-bottom: 6px;
}
.post-detail-content a {
  color: var(--coral);
  text-decoration: underline;
}
.post-detail-content strong {
  color: var(--ink);
}
.post-date {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--parchment-dark);
}
.post-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 10px;
}
.post-excerpt {
  font-size: 1.1rem;
  line-height: 1.72;
  color: var(--ink-faded);
  margin-bottom: 14px;
}
.read-link {
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: color 0.2s;
}
.read-link:hover { color: var(--coral); }

.proj-title {
  font-family: var(--font-display);
  font-size: 1.38rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 8px;
}
.proj-desc {
  font-size: 0.9rem;
  line-height: 1.68;
  color: var(--ink-faded);
  margin-bottom: 12px;
}
.proj-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
.ptag {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid var(--teal);
  color: var(--teal-dark);
  padding: 3px 9px;
}
.proj-link {
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: color 0.2s;
}
.proj-link:hover { color: var(--coral); }

/* ── Entrance Animation ─────────────────────────────────── */
.polygon-wrapper {
  transition: opacity 1.4s ease, transform 1.4s cubic-bezier(0.16,1,0.3,1);
}
.polygon-wrapper.entrance-start {
  opacity: 0;
  transform: translate(-50%, calc(-50% + 52px)) scale(0.96);
}
.polygon-wrapper.entrance-end {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* ── Responsive — Tablet ────────────────────────────────── */
@media (max-width: 900px) {
  .projects-list { max-width: 70%; }
  .home-text { padding: 24px 20px; }
}

/* ── Responsive — Mobile ───────────────────────────────── */
@media (max-width: 780px) {
  :root { --poly-w: 96vw; --poly-h: 94vh; }

  /* Header / Nav */
  .site-header {
    margin: -90px -70px 0;
    padding: 90px 30px 16px;
  }
  .polygon-page.expanded .site-header {
    padding: 18px 20px;
  }
  .tab-btn { padding: 4px 12px; font-size: 0.9rem; }
  .tab-sep { font-size: 0.6rem; }

  /* Home tab */
  #tab-home {
    flex-direction: column;
    padding: 20px 24px;
    gap: 20px;
  }
  .home-photo { display: none; }
  .home-text {
    padding: 16px 0;
    max-width: none;
  }
  .hero-title { font-size: 3rem; }
  .bio-text { font-size: 1.6rem; line-height: 1.3; }
  .bio-sub { font-size: 1rem; }
  .home-links { gap: 8px; flex-wrap: wrap; }
  .home-link { font-size: 0.85rem; }
  .home-foot { padding: 18px 0; }

  /* Thoughts tab */
  .panel-inner { padding: 24px 20px 200px; }
  .panel-header { margin-bottom: 20px; }
  .section-title { font-size: 2rem; }
  .section-sub { font-size: 1rem; }
  .posts-list { grid-template-columns: 1fr; gap: 24px; }
  .post-img { height: 220px; }
  .post-title { font-size: 1.4rem; }
  .post-excerpt { font-size: 1rem; }
  .post-meta { font-size: 0.8rem; }
  .post-tag { font-size: 0.75rem; padding: 2px 7px; }

  /* Post detail */
  .panel-inner.showing-detail .post-detail,
  .panel-inner.showing-detail .project-detail {
    max-width: 100%;
    padding: 0;
  }
  .post-detail-hero { max-height: 280px; }
  .post-detail-title { font-size: 1.8rem; }
  .post-detail-content { font-size: 1.02rem; line-height: 1.72; }
  .post-detail-content h2 { font-size: 1.35rem; }
  .post-back-btn { font-size: 0.9rem; margin-bottom: 20px; }

  /* Projects tab */
  .projects-list { max-width: 100%; }
  .proj-preview-title { font-size: 1.6rem; }
  .proj-preview-excerpt { font-size: 1rem; }
  .proj-preview-body { padding: 14px 4px 20px; }
  .ptag { font-size: 0.55rem; padding: 2px 7px; }

  /* Project detail */
  .proj-detail-title { font-size: 1.8rem; }
  .proj-detail-link {
    font-size: 0.92rem;
    padding: 14px 24px;
    display: block;
    text-align: center;
  }
  .proj-detail-content { font-size: 1.02rem; line-height: 1.72; }
  .proj-detail-content h4 { font-size: 1.25rem; }
}

/* ── Responsive — Small phones ─────────────────────────── */
@media (max-width: 480px) {
  :root { --poly-w: 100vw; --poly-h: 100vh; }
  .polygon-page { padding: 70px 24px 60px; }
  .site-header {
    margin: -70px -24px 0;
    padding: 70px 16px 14px;
  }
  .polygon-page.expanded .site-header {
    padding: 14px 16px;
  }
  .tab-btn { padding: 4px 8px; font-size: 0.82rem; }

  #tab-home { padding: 16px 12px; }
  .hero-title { font-size: 2.4rem; }
  .bio-text { font-size: 1.3rem; }
  .bio-sub { font-size: 0.9rem; }

  .panel-inner { padding: 20px 14px 160px; }
  .post-img { height: 180px; }
  .post-title { font-size: 1.2rem; }
  .post-detail-title { font-size: 1.5rem; }
  .proj-preview-title { font-size: 1.3rem; }
  .proj-detail-title { font-size: 1.5rem; }
}