/* ==========================================================================
   Sumon Studio — Theme Stylesheet
   Tokens follow DESIGN-omarfsumon.md: a single Jost typeface, a dark
   text-primary + warm surface-strong palette, and one teal accent
   (color.text.inverse / color.accent.cta) reserved specifically for
   primary buttons and links that drive conversion.
   ========================================================================== */

:root{
  /* ---- Color ---- */
  --ink:#1f2a2a;                 /* color.text.primary */
  --ink-muted:#4a5858;           /* color.text.secondary */
  --ink-faint:#9ca09b;           /* faint/tertiary text — not in the spec's list; interpolated between text.secondary and surface.strong */

  --accent:#2f6f5e;              /* color.text.inverse / color.accent.cta — buttons + links that drive conversion ONLY */
  --accent-hover:#265c4e;
  --accent-active:#1f4c40;
  --accent-disabled-bg:#5a6b68;
  --accent-disabled-text:#c7d0cd;
  --accent-wash:rgba(47,111,94,0.1);

  --primary:#000000;             /* color.surface.base — dark section backgrounds, structural "ink" state (hover/active borders, selected chips) */
  --emphasis:#000000;            /* strong contrast color for hover/active borders — same as --primary in light mode, flips to near-white in dark mode so those states stay visible against a dark page */
  --emphasis-text:#ffffff;       /* text/icon color meant to sit on top of --emphasis */
  --secondary:#efe9df;           /* color.surface.strong */
  --bg:#efe9df;                  /* page background = surface.strong */
  --surface:#ffffff;             /* card / component surface */
  --header-bg:rgba(239,233,223,0.9); /* translucent sticky-nav backdrop — a literal color, not derived from --bg, so it can carry its own alpha for the blur effect */
  --border:rgba(31,42,42,0.08);  /* derived from text.primary — matches the reference's nav/divider borders */
  --border-soft:rgba(31,42,42,0.06); /* matches the reference's card borders */
  --border-strong:#ffffff;       /* color.border.strong — used only on dark surfaces */

  --success:#3F7A4E;
  --warning:#B98A2E;
  --danger:#b5453b;              /* the reference's own field.error color */

  /* ---- Radius ---- */
  --radius-xs:4px;   /* form inputs */
  --radius-sm:6px;   /* cards, panels, tags, images */
  --radius-md:50px;  /* buttons — full pill at typical button height */
  --radius-lg:100px; /* fully-pill chips (filter buttons) */

  /* ---- Shadow ---- */
  --shadow-1:0px 10px 30px 0px rgba(30,40,40,0.08); /* resting elevation */
  --shadow-2:0px 8px 24px 0px rgba(0,0,0,0.16);      /* button hover */
  --shadow-3:0px 16px 46px 0px rgba(30,40,40,0.1);   /* card hover */

  /* ---- Motion ---- */
  --motion-instant:150ms;
  --motion-fast:250ms;
  --motion-normal:300ms;
  --motion-slow:350ms;
  --motion-slower:900ms;
  --ease:ease; /* the reference uses the plain "ease" keyword throughout, not a custom curve */

  /* ---- Spacing scale (reference tokens) ---- */
  --space-1:0.4px; --space-2:3.2px; --space-3:5.6px; --space-4:8px;
  --space-5:8.8px; --space-6:9.6px; --space-7:10.4px; --space-8:12.8px;

  /* ---- Typography — single family per the spec ---- */
  --font-display:'Jost', sans-serif;
  --font-body:'Jost', sans-serif;
  --font-mono:'Jost', sans-serif; /* labels/eyebrows differentiate via letter-spacing + case, not a separate typeface */

  /* ---- Container ---- */
  --maxw:1320px;
}

/* ==========================================================================
   Dark mode — toggled via [data-theme="dark"] on <html> (assets/js/main.js
   sets/removes the attribute and remembers the choice in localStorage; an
   inline script in header.php applies it before first paint to avoid a
   flash of the wrong theme).

   Values are inverted, not just swapped 1:1 — a few colors are deliberately
   adjusted rather than mechanically flipped, because a literal palette
   inversion breaks WCAG contrast in places:
   - --accent, used as plain TEXT color in several spots (nav logo mark,
     the hero's highlighted word, service/project links, the trust-card's
     big rating number) as well as a button background, is brightened here.
     The original #2f6f5e teal against the new dark surface falls under
     4.5:1 for small text; #4fae95 restores AA-level contrast while staying
     recognizably "the same" accent color.
   - --danger is brightened for the same reason (it's used as visible field
     error text, not just a border).
   - --primary (the hero/footer "dark panel" background) goes to a
     lighter charcoal than the page background, not black — in dark mode,
     elevated surfaces read as *lighter*, not darker, so panels still look
     raised instead of blending into the page.
   ========================================================================== */
html[data-theme="dark"]{
  --ink:#f2f0ea;
  --ink-muted:#a9ada7;
  --ink-faint:#6f7570;

  --accent:#4fae95;
  --accent-hover:#63bda5;
  --accent-active:#3f9c84;
  --accent-disabled-bg:#3a4442;
  --accent-disabled-text:#7c8886;
  --accent-wash:rgba(79,174,149,0.16);

  --primary:#1f2123;         /* hero/footer panels — lighter than page bg = elevated, not just "dark" */
  --emphasis:#f2f0ea;
  --emphasis-text:#121314;

  --secondary:#1c1e1f;
  --bg:#121314;
  --surface:#191b1c;
  --header-bg:rgba(18,19,20,0.85);
  --border:rgba(242,240,234,0.12);
  --border-soft:rgba(242,240,234,0.08);
  --border-strong:#000000;

  --success:#4f9e63;
  --warning:#d9a44c;
  --danger:#e0685a;

  --shadow-1:0px 10px 30px 0px rgba(0,0,0,0.35);
  --shadow-2:0px 8px 24px 0px rgba(0,0,0,0.45);
  --shadow-3:0px 16px 46px 0px rgba(0,0,0,0.4);
}

*,*::before,*::after{ box-sizing:border-box; }
@media (prefers-reduced-motion: reduce){ *{ animation-duration:.01ms !important; transition-duration:.01ms !important; } }

html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-weight:300;
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; height:auto; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
button{ font-family:inherit; }
h1,h2,h3,h4{ font-family:var(--font-display); font-weight:500; letter-spacing:.2px; color:var(--ink); line-height:1.15; margin:0; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 clamp(20px,6vw,64px); }

.eyebrow{
  font-family:var(--font-mono); font-size:12px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--ink-muted); display:flex; align-items:center; gap:10px; margin-bottom:16px;
}
.eyebrow::before{ content:''; width:16px; height:1px; background:var(--ink-muted); }
.eyebrow.on-dark{ color:var(--accent-wash); color:#9fb3ac; }
.eyebrow.on-dark::before{ background:#9fb3ac; }

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--font-body); font-size:14px; letter-spacing:.3px; padding:14px 28px;
  border-radius:var(--radius-md); border:1px solid transparent; cursor:pointer;
  transition:background var(--motion-fast) var(--ease), border-color var(--motion-fast) var(--ease), box-shadow var(--motion-fast) var(--ease), transform var(--motion-instant) var(--ease);
}
.btn:active{ transform:scale(.97); }
.btn[disabled],.btn:disabled{ opacity:.55; cursor:not-allowed; pointer-events:none; }
.btn.is-loading{ opacity:.75; cursor:wait; }

.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:var(--accent-hover); box-shadow:var(--shadow-2); }
.btn-primary:active{ background:var(--accent-active); }
.btn-primary:disabled,.btn-primary[disabled]{ background:var(--accent-disabled-bg); color:var(--accent-disabled-text); }

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

.btn-outline{ background:transparent; color:var(--ink); border-color:var(--border); }
.btn-outline:hover{ border-color:var(--emphasis); }
.btn-outline.on-dark{ color:#fff; border-color:rgba(255,255,255,.4); }
.btn-outline.on-dark:hover{ border-color:#fff; background:rgba(255,255,255,.06); }

/* Focus-visible: teal on light surfaces (the reference's default), white
   specifically inside dark panels (the reference's on-black button showcase) */
.btn:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; }
.dark-panel .btn:focus-visible,
.btn-outline.on-dark:focus-visible{ outline:2px solid #fff; outline-offset:3px; }

.tag{
  font-family:var(--font-mono); font-size:11px; letter-spacing:.05em; text-transform:uppercase;
  color:var(--ink-muted); border:1px solid var(--border); padding:5px 10px; border-radius:var(--radius-sm);
}

/* ============ NAV ============ */
.site-header{ position:sticky; top:0; z-index:100; background:var(--header-bg); backdrop-filter:blur(10px); border-bottom:1px solid var(--border); }
.nav-inner{ display:flex; align-items:center; justify-content:space-between; padding:20px clamp(20px,6vw,64px); max-width:var(--maxw); margin:0 auto; }
.site-logo{ font-family:var(--font-display); font-weight:500; font-size:19px; color:var(--ink); display:flex; align-items:baseline; gap:8px; }
.site-logo span{ color:var(--accent); font-family:var(--font-mono); font-size:11px; letter-spacing:.1em; }
.nav-menu{ display:flex; gap:32px; }
.nav-menu a{ font-size:14px; color:var(--ink-muted); font-weight:500; transition:color var(--motion-fast) var(--ease); }
.nav-menu a:hover, .nav-menu .current-menu-item a{ color:var(--ink); }
.nav-menu a:focus-visible{ outline:2px solid var(--accent); outline-offset:4px; border-radius:var(--radius-xs); }
.nav-cta{ display:flex; align-items:center; gap:18px; }

/* ============ DARK MODE TOGGLE ============ */
.theme-toggle{
  background:none; border:none; padding:0; cursor:pointer; flex-shrink:0;
  display:inline-flex; align-items:center;
}
.theme-toggle-track{
  position:relative; display:block; width:50px; height:27px;
  background:var(--secondary); border:1px solid var(--border);
  border-radius:var(--radius-lg);
  transition:background var(--motion-normal) var(--ease), border-color var(--motion-normal) var(--ease);
}
.theme-toggle-icon{
  position:absolute; top:50%; transform:translateY(-50%);
  font-size:12px; line-height:1; color:var(--ink-faint);
  transition:color var(--motion-normal) var(--ease);
}
.theme-toggle-icon-sun{ left:6px; }
.theme-toggle-icon-moon{ right:6px; }
.theme-toggle-thumb{
  position:absolute; top:2px; left:2px; width:21px; height:21px;
  background:var(--surface); border-radius:50%; box-shadow:var(--shadow-1);
  transition:transform var(--motion-normal) var(--ease), background var(--motion-normal) var(--ease);
}
.theme-toggle[aria-pressed="true"] .theme-toggle-thumb{ transform:translateX(23px); }
.theme-toggle[aria-pressed="true"] .theme-toggle-icon-moon{ color:var(--accent); }
.theme-toggle[aria-pressed="false"] .theme-toggle-icon-sun{ color:var(--warning); }
.theme-toggle:focus-visible .theme-toggle-track{ outline:2px solid var(--accent); outline-offset:2px; }

.nav-toggle{ display:none; background:none; border:none; cursor:pointer; padding:6px; }
.nav-toggle span{ display:block; width:22px; height:2px; background:var(--ink); margin:5px 0; }

@media (max-width:900px){
  .nav-menu{
    position:fixed; inset:0 0 0 auto; width:78vw; max-width:320px; background:var(--surface);
    flex-direction:column; padding:90px 28px 28px; gap:6px; transform:translateX(100%);
    transition:transform var(--motion-slow) var(--ease); box-shadow:var(--shadow-3);
  }
  .nav-menu.open{ transform:translateX(0); }
  .nav-menu a{ font-size:16px; padding:10px 0; display:block; }
  .nav-toggle{ display:block; }
  .nav-cta .btn span.long{ display:none; }
}

/* ============ HERO (dark banner reused across site) ============ */
.dark-panel{ background:var(--primary); border-radius:var(--radius-sm); color:#fff; }

.hero{ padding:90px 0 80px; }
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center; }
@media (max-width:980px){ .hero-grid{ grid-template-columns:1fr; gap:44px; } }
.hero h1{ font-size:clamp(36px,4.4vw,58px); font-weight:300; line-height:1.08; margin:6px 0 22px; max-width:16ch; }
.hero h1 em{ font-style:normal; color:var(--accent); }
.hero p.lead{ font-size:18px; color:var(--ink-muted); max-width:46ch; margin-bottom:32px; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:36px; }
.hero-socials{ display:flex; gap:20px; flex-wrap:wrap; }
.hero-socials a{ font-family:var(--font-mono); font-size:12px; color:var(--ink-faint); border-bottom:1px solid transparent; padding-bottom:2px; transition:color var(--motion-fast) var(--ease), border-color var(--motion-fast) var(--ease); }
.hero-socials a:hover{ color:var(--ink); border-color:var(--ink); }

.hero-panel{ padding:32px; }
.hero-panel .eyebrow{ margin-bottom:14px; }
.stack-line{ display:flex; align-items:center; gap:12px; font-family:var(--font-mono); font-size:13px; color:rgba(255,255,255,.7); padding:11px 0; border-bottom:1px dashed rgba(255,255,255,.12); }
.stack-line:last-child{ border-bottom:none; }
.stack-line b{ color:#fff; font-weight:500; }
.stack-line .status{ margin-left:auto; color:#9fb3ac; font-size:11px; }
.hero-panel-foot{ display:flex; justify-content:space-between; align-items:center; margin-top:18px; padding-top:16px; border-top:1px solid rgba(255,255,255,.12); font-family:var(--font-mono); font-size:11px; color:rgba(255,255,255,.55); }
.live-dot{ width:7px; height:7px; border-radius:50%; background:var(--accent); display:inline-block; margin-right:8px; }

/* ============ STATS ============ */
.stats{ border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.stats-grid{ display:grid; grid-template-columns:repeat(4,1fr); padding:36px 0; }
.stat{ padding:0 24px; border-left:1px solid var(--border); }
.stat:first-child{ border-left:none; padding-left:0; }
.stat .num{ font-family:var(--font-display); font-size:32px; font-weight:500; }
.stat .label{ font-family:var(--font-mono); font-size:11px; color:var(--ink-faint); text-transform:uppercase; letter-spacing:.05em; margin-top:6px; display:block; }
@media (max-width:780px){ .stats-grid{ grid-template-columns:repeat(2,1fr); row-gap:26px; } .stat:nth-child(3){ border-left:none; padding-left:0; } }

/* ============ SECTION ============ */
.section{ padding:96px 0; }
.section.bordered{ border-bottom:1px solid var(--border); }
.section-head{ max-width:640px; margin-bottom:52px; }
.section-head h2{ font-size:clamp(28px,3vw,38px); margin-top:6px; line-height:1.15; }
.section-head p{ color:var(--ink-muted); margin-top:14px; font-size:16px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-head.center .eyebrow{ justify-content:center; }

/* ============ CARDS ============ */
.card{ background:var(--surface); border:1px solid var(--border-soft); border-radius:var(--radius-sm); padding:28px 30px; box-shadow:var(--shadow-1); transition:box-shadow var(--motion-normal) var(--ease); }
.card:hover{ box-shadow:var(--shadow-3); }

/* ============ SERVICES ============ */
.services-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:900px){ .services-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:640px){ .services-grid{ grid-template-columns:1fr; } }
.service-card{ background:var(--surface); border:1px solid var(--border-soft); border-radius:var(--radius-sm); padding:30px; box-shadow:var(--shadow-1); transition:transform var(--motion-normal) var(--ease), box-shadow var(--motion-normal) var(--ease); }
.service-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-3); }
.service-card .idx{ font-family:var(--font-mono); font-size:11px; color:var(--accent); background:var(--accent-wash); display:inline-block; padding:4px 8px; border-radius:var(--radius-xs); }
.service-card h3{ font-size:20px; margin:16px 0 10px; }
.service-card p{ color:var(--ink-muted); font-size:14px; line-height:1.65; margin-bottom:16px; }
.service-card a{ font-family:var(--font-mono); font-size:12px; color:var(--accent); border-bottom:1px solid transparent; transition:border-color var(--motion-fast) var(--ease); }
.service-card a:hover{ border-color:var(--accent); }

/* ============ WORK GRID ============ */
.filters{ display:flex; gap:10px; flex-wrap:wrap; margin-bottom:36px; }
.filter-btn{ font-family:var(--font-mono); font-size:12px; padding:9px 16px; border:1px solid var(--border); border-radius:var(--radius-lg); background:var(--surface); color:var(--ink-muted); cursor:pointer; transition:all var(--motion-fast) var(--ease); }
.filter-btn:hover{ border-color:var(--emphasis); color:var(--ink); }
.filter-btn.active{ background:var(--emphasis); border-color:var(--emphasis); color:var(--emphasis-text); }

.work-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media (max-width:980px){ .work-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:640px){ .work-grid{ grid-template-columns:1fr; } }

.project-card{ border:1px solid var(--border-soft); border-radius:var(--radius-sm); overflow:hidden; background:var(--surface); box-shadow:var(--shadow-1); transition:border-color var(--motion-normal) var(--ease), box-shadow var(--motion-normal) var(--ease), transform var(--motion-normal) var(--ease); display:block; }
.project-card:hover{ border-color:var(--emphasis); box-shadow:var(--shadow-3); transform:translateY(-4px); }
.project-thumb{ aspect-ratio:4/3; background:var(--secondary); display:flex; align-items:center; justify-content:center; border-bottom:1px solid var(--border); overflow:hidden; }
.project-thumb img{ width:100%; height:100%; object-fit:cover; }
.project-thumb span{ font-family:var(--font-mono); font-size:11px; color:var(--ink-faint); text-transform:uppercase; }
.project-body{ padding:20px 22px 24px; }
.project-body .ptags{ display:flex; gap:8px; margin-bottom:12px; flex-wrap:wrap; }
.project-body h3{ font-size:19px; margin-bottom:8px; }
.project-body p{ font-size:13.5px; color:var(--ink-muted); margin-bottom:14px; }
.project-link{ font-family:var(--font-mono); font-size:12px; color:var(--accent); }

.empty-note{ margin-top:20px; padding:16px 20px; border:1px dashed var(--border); border-radius:var(--radius-sm); font-family:var(--font-mono); font-size:12.5px; color:var(--ink-faint); }

/* ============ WHY GRID ============ */
.why-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1px 40px; }
.why-item{ padding:26px 0; border-top:1px solid var(--border); }
.why-item h3{ font-size:16.5px; font-family:var(--font-body); font-weight:500; margin-bottom:8px; display:flex; align-items:center; gap:10px; }
.why-item h3::before{ content:''; width:6px; height:6px; background:var(--ink-muted); border-radius:50%; flex-shrink:0; }
.why-item p{ color:var(--ink-muted); font-size:14px; line-height:1.65; }
@media (max-width:900px){ .why-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:600px){ .why-grid{ grid-template-columns:1fr; } }

/* ============ TRUST ============ */
.trust-grid{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
@media (max-width:900px){ .trust-grid{ grid-template-columns:1fr; gap:32px; } }
.trust-card .rating{ display:flex; align-items:baseline; gap:10px; margin-bottom:6px; }
.trust-card .n{ font-family:var(--font-display); font-size:38px; color:var(--accent); }
.trust-card .of{ color:var(--ink-faint); font-size:14px; }
.trust-card .stars{ color:var(--accent); font-size:14px; letter-spacing:2px; margin-bottom:16px; }
.trust-card .rev{ font-family:var(--font-mono); font-size:12px; color:var(--ink-muted); }
.trust-note{ margin-top:14px; font-size:12.5px; color:var(--ink-faint); font-family:var(--font-mono); }

/* ============ TESTIMONIALS ============ */
.testimonial-card{ padding:28px; }
.testimonial-card p.quote{ font-family:var(--font-display); font-size:19px; font-weight:400; line-height:1.4; margin-bottom:18px; }
.testimonial-meta{ font-family:var(--font-mono); font-size:12px; color:var(--ink-muted); }

/* ============ FINAL CTA ============ */
.final-cta{ padding:36px; text-align:center; margin:0 auto; }
.final-cta h2{ font-size:clamp(28px,3.6vw,44px); max-width:18ch; margin:0 auto 16px; color:#fff; line-height:1.15; }
.final-cta p{ color:rgba(255,255,255,.7); max-width:48ch; margin:0 auto 30px; font-size:16px; }
.final-actions{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ============ FOOTER ============ */
.site-footer{ padding:64px 0 36px; border-top:1px solid var(--border); margin-top:40px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:44px; margin-bottom:52px; }
@media (max-width:780px){ .footer-grid{ grid-template-columns:1fr 1fr; row-gap:32px; } }
.footer-grid h4{ font-family:var(--font-mono); font-size:11px; color:var(--ink-faint); text-transform:uppercase; letter-spacing:.08em; margin-bottom:16px; }
.footer-grid ul{ display:flex; flex-direction:column; gap:10px; }
.footer-grid a{ color:var(--ink-muted); font-size:14px; transition:color var(--motion-fast) var(--ease); }
.footer-grid a:hover{ color:var(--ink); }
.footer-brand p{ color:var(--ink-muted); font-size:14px; max-width:34ch; margin-top:14px; line-height:1.6; }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:26px; border-top:1px solid var(--border); font-family:var(--font-mono); font-size:12px; color:var(--ink-faint); flex-wrap:wrap; gap:12px; }

/* ============ PAGE HEADER (inner pages) ============ */
.page-header{ padding:64px 0 48px; border-bottom:1px solid var(--border); }
.page-header h1{ font-size:clamp(32px,4vw,48px); margin:8px 0 14px; }
.page-header p{ color:var(--ink-muted); max-width:60ch; font-size:16px; }
.breadcrumb{ font-family:var(--font-mono); font-size:12px; color:var(--ink-faint); margin-bottom:14px; }
.breadcrumb a:hover{ color:var(--ink); }

/* ============ ABOUT ============ */
.about-grid{ display:grid; grid-template-columns:.9fr 1.1fr; gap:56px; }
@media (max-width:900px){ .about-grid{ grid-template-columns:1fr; gap:34px; } }
.about-body p{ color:var(--ink-muted); margin-bottom:18px; font-size:16px; line-height:1.75; }
.about-body p:last-child{ margin-bottom:0; }

/* ============ EXPERIENCE TIMELINE ============ */
.timeline{ max-width:760px; }
.timeline-item{ display:grid; grid-template-columns:140px 1fr; gap:28px; padding:32px 0; border-top:1px solid var(--border); }
.timeline-item:first-child{ border-top:none; }
.timeline-date{ font-family:var(--font-mono); font-size:12.5px; color:var(--ink-faint); }
.timeline-item h3{ font-size:19px; margin-bottom:4px; }
.timeline-item .role{ font-family:var(--font-mono); font-size:12.5px; color:var(--accent); margin-bottom:14px; display:block; }
.timeline-item ul{ display:flex; flex-direction:column; gap:8px; }
.timeline-item li{ font-size:14.5px; color:var(--ink-muted); padding-left:16px; position:relative; }
.timeline-item li::before{ content:''; position:absolute; left:0; top:8px; width:5px; height:5px; background:var(--ink-muted); border-radius:50%; }
@media (max-width:600px){ .timeline-item{ grid-template-columns:1fr; gap:6px; } }

/* ============ SKILLS ============ */
.skills-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:780px){ .skills-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:500px){ .skills-grid{ grid-template-columns:1fr; } }
.skill-group h4{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.08em; color:var(--ink-faint); margin-bottom:14px; }
.skill-group ul{ display:flex; flex-direction:column; gap:9px; }
.skill-group li{ font-size:14.5px; color:var(--ink); padding-bottom:9px; border-bottom:1px solid var(--border-soft); }

/* ============ CASE STUDY (single-project) ============ */
.cs-hero{ padding:56px 0 44px; border-bottom:1px solid var(--border); }
.cs-meta{ display:flex; gap:28px; flex-wrap:wrap; margin:22px 0 26px; }
.cs-meta div span{ display:block; }
.cs-meta .k{ font-family:var(--font-mono); font-size:10.5px; text-transform:uppercase; color:var(--ink-faint); margin-bottom:4px; }
.cs-meta .v{ font-size:14px; font-weight:500; }
.cs-hero-image{ border-radius:var(--radius-sm); overflow:hidden; border:1px solid var(--border); margin-top:32px; aspect-ratio:16/9; background:var(--secondary); display:flex; align-items:center; justify-content:center; }
.cs-hero-image span{ font-family:var(--font-mono); font-size:12px; color:var(--ink-faint); }

.cs-block{ padding:56px 0; border-bottom:1px solid var(--border); }
.cs-block-grid{ display:grid; grid-template-columns:.7fr 1.3fr; gap:48px; }
@media (max-width:860px){ .cs-block-grid{ grid-template-columns:1fr; gap:20px; } }
.cs-block h2{ font-size:24px; }
.cs-block .body p{ color:var(--ink-muted); font-size:16px; line-height:1.75; margin-bottom:16px; }
.cs-block .body ul{ margin-top:12px; }
.cs-block .body li{ font-size:15px; color:var(--ink-muted); padding-left:18px; position:relative; margin-bottom:10px; }
.cs-block .body li::before{ content:''; position:absolute; left:0; top:9px; width:5px; height:5px; background:var(--ink-muted); border-radius:50%; }

.cs-gallery{ display:grid; grid-template-columns:1fr 1fr; gap:18px; margin-top:24px; }
@media (max-width:640px){ .cs-gallery{ grid-template-columns:1fr; } }
.cs-gallery img{ border-radius:var(--radius-sm); border:1px solid var(--border); }

.tech-badges{ display:flex; gap:10px; flex-wrap:wrap; margin-top:14px; }

/* ============ CONTACT ============ */
.contact-grid{ display:grid; grid-template-columns:1fr .8fr; gap:56px; }
@media (max-width:900px){ .contact-grid{ grid-template-columns:1fr; gap:36px; } }
.form-row{ margin-bottom:20px; }
.form-row label{ display:block; font-size:13.5px; font-weight:500; color:var(--ink-muted); margin-bottom:8px; }
.form-row input, .form-row select, .form-row textarea{
  width:100%; padding:14px 16px; font-family:var(--font-body); font-weight:300; font-size:15px; color:var(--ink);
  background:var(--surface); border:1px solid rgba(31,42,42,.18); border-radius:var(--radius-xs);
  transition:border-color var(--motion-fast) var(--ease), box-shadow var(--motion-fast) var(--ease);
}
.form-row input:focus-visible, .form-row select:focus-visible, .form-row textarea:focus-visible{
  outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-wash);
}
/* Native, JS-free error state: once a required field has been touched and is invalid, its border turns red */
.form-row input:invalid:not(:placeholder-shown):not(:focus),
.form-row textarea:invalid:not(:placeholder-shown):not(:focus){ border-color:var(--danger); }
.form-row input:disabled, .form-row select:disabled, .form-row textarea:disabled{
  background:#e3ded3; color:#9aa5a3; cursor:not-allowed;
}
/* Available for JS-driven validation states if wired up later */
.form-row.has-error input, .form-row.has-error select, .form-row.has-error textarea{ border-color:var(--danger); }
.form-row.has-error .field-msg{ color:var(--danger); font-size:12.5px; margin-top:6px; display:block; }
.form-row.has-success input, .form-row.has-success select, .form-row.has-success textarea{ border-color:var(--accent); }
.form-row.has-success .field-msg{ color:var(--accent); font-size:12.5px; margin-top:6px; display:block; }

.form-row-2{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media (max-width:520px){ .form-row-2{ grid-template-columns:1fr; } }
.form-success{ background:var(--secondary); border:1px solid var(--border); border-radius:var(--radius-sm); padding:20px; font-size:14.5px; margin-bottom:20px; }
.form-honeypot{ position:absolute; left:-9999px; opacity:0; }
.contact-side .card{ margin-bottom:16px; }
.contact-side .card h4{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; color:var(--ink-faint); margin-bottom:10px; }
.contact-side .card a{ font-size:15px; font-weight:500; color:var(--ink); }

/* ============ 404 ============ */
.error-404{ padding:120px 0; text-align:center; }
.error-404 h1{ font-size:clamp(60px,10vw,120px); color:var(--secondary); -webkit-text-stroke:2px var(--ink); }
.error-404 h2{ font-size:26px; margin:18px 0 12px; }
.error-404 p{ color:var(--ink-muted); margin-bottom:28px; }
.error-links{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ============ BLOG ============ */
.blog-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media (max-width:900px){ .blog-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:640px){ .blog-grid{ grid-template-columns:1fr; } }
.post-card{ border:1px solid var(--border-soft); border-radius:var(--radius-sm); overflow:hidden; background:var(--surface); box-shadow:var(--shadow-1); }
.post-card .thumb{ aspect-ratio:16/10; background:var(--secondary); }
.post-card .thumb img{ width:100%; height:100%; object-fit:cover; }
.post-card .body{ padding:20px 22px 24px; }
.post-card .meta{ font-family:var(--font-mono); font-size:11px; color:var(--ink-faint); margin-bottom:10px; }
.post-card h3{ font-size:18px; margin-bottom:8px; }
.post-card p{ font-size:13.5px; color:var(--ink-muted); }

.single-content{ max-width:760px; }
.single-content p{ margin-bottom:20px; font-size:17px; line-height:1.8; color:var(--ink); }
.single-content h2{ margin:36px 0 14px; font-size:26px; }
.single-content h3{ margin:28px 0 12px; font-size:20px; }
.single-content img{ border-radius:var(--radius-sm); margin:24px 0; }
.single-content ul, .single-content ol{ margin-bottom:20px; padding-left:22px; }
.single-content li{ margin-bottom:8px; font-size:16px; color:var(--ink-muted); }

/* accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--accent); outline-offset:2px;
}
.dark-panel a:focus-visible, .dark-panel button:focus-visible{ outline-color:#fff; }
.skip-link{ position:absolute; left:-9999px; top:0; background:var(--primary); color:#fff; padding:12px 20px; z-index:200; }
.skip-link:focus{ left:12px; top:12px; }

/* ============ FAQ (details/summary) ============ */
details summary::-webkit-details-marker{ display:none; }
details summary{ position:relative; padding-right:28px; }
details summary::after{
  content:'+'; position:absolute; right:0; top:0; font-family:var(--font-mono);
  font-size:18px; color:var(--ink-faint); transition:transform var(--motion-fast) var(--ease);
}
details[open] summary::after{ content:'–'; }