/* =========================================================
   Ria Iyer — Professional Theme
   Clean, industry-standard portfolio styling for product/UX design.
   ========================================================= */

:root{
  --bg: #FAFAF8;
  --surface: #FFFFFF;
  --ink: #17171A;
  --ink-dim: #6B6B70;
  --ink-faint: #9A9AA0;
  --border: #E7E6E2;
  --border-soft: #F0EFEC;
  --accent: #3452E0;
  --accent-dim: #EEF0FD;
  --accent-ink: #FFFFFF;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(20,20,25,.05), 0 1px 1px rgba(20,20,25,.04);
  --shadow: 0 2px 8px rgba(20,20,25,.06), 0 10px 30px rgba(20,20,25,.05);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --maxw: 1160px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:var(--font);
  font-size:16px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 clamp(20px,4vw,48px); }

/* ---------- header / nav ---------- */
.p-header{
  position:sticky; top:0; z-index:40;
  background:rgba(250,250,248,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.p-header-inner{
  max-width:var(--maxw); margin:0 auto;
  padding:18px clamp(20px,4vw,48px);
  display:grid; grid-template-columns:1fr auto 1fr; align-items:center; column-gap:16px;
}
.p-logo{
  grid-column:1; justify-self:start;
  font-weight:700; font-size:16px; letter-spacing:-.01em;
  color:var(--ink);
}
.p-logo span{ color:var(--accent); }
.p-nav{
  grid-column:2; justify-self:center;
  display:flex; gap:clamp(14px,2.4vw,32px); align-items:center;
}
.p-nav a{
  font-size:14.5px; font-weight:500; color:var(--ink-dim);
  padding:8px 2px; position:relative; white-space:nowrap;
}
.p-nav a:hover{ color:var(--ink); }
.p-nav a.active{ color:var(--ink); }
.p-nav a.active::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px;
  height:2px; background:var(--accent); border-radius:2px;
}
.p-nav-cta{ grid-column:3; justify-self:end; display:flex; gap:10px; align-items:center; }
.p-toggle{
  display:none; background:none; border:1px solid var(--border); border-radius:var(--radius-sm);
  color:var(--ink); font-size:14px; padding:8px 12px; cursor:pointer;
}
@media (max-width:860px){
  .p-nav{ display:none; position:absolute; top:100%; left:0; right:0;
    background:var(--surface); border-bottom:1px solid var(--border);
    flex-direction:column; align-items:stretch; gap:0; padding:8px 0; }
  .p-nav.open{ display:flex; }
  .p-nav a{ padding:14px clamp(20px,4vw,48px); border-bottom:1px solid var(--border-soft); }
  .p-nav a.active::after{ display:none; }
  .p-nav a.active{ background:var(--accent-dim); }
  .p-toggle{ display:inline-block; }
  .p-header-inner{ position:relative; }
  .p-nav-cta .btn-label{ display:none; }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font); font-weight:600; font-size:14.5px;
  padding:11px 20px; border-radius:var(--radius-sm);
  border:1px solid transparent; cursor:pointer;
  background:var(--accent); color:var(--accent-ink);
  box-shadow:var(--shadow-sm);
  transition:transform .12s ease, box-shadow .12s ease, background .12s ease;
}
.btn:hover{ background:#2A44C4; box-shadow:var(--shadow); }
.btn.ghost{ background:var(--surface); color:var(--ink); border-color:var(--border); }
.btn.ghost:hover{ background:var(--border-soft); }
.btn.sm{ padding:8px 14px; font-size:13px; }
.btn-row{ display:flex; gap:12px; flex-wrap:wrap; }

/* ---------- hero ---------- */
.p-hero{ padding:clamp(56px,10vw,110px) 0 clamp(40px,6vw,64px); }
.p-hero-inner{ max-width:760px; }
.p-eyebrow{
  display:inline-block; font-size:13px; font-weight:600; letter-spacing:.02em;
  color:var(--accent); background:var(--accent-dim);
  padding:6px 12px; border-radius:999px; margin-bottom:20px;
}
.p-hero h1{
  font-size:clamp(34px,5.5vw,56px); line-height:1.08; letter-spacing:-.02em;
  margin:0 0 16px; font-weight:800;
}
.p-hero p.lead{
  font-size:clamp(16px,2vw,19px); color:var(--ink-dim); margin:0 0 32px; max-width:56ch;
}

/* ---------- sections / headings ---------- */
.section{ padding:clamp(40px,6vw,72px) 0; }
.section-head{ margin-bottom:clamp(24px,4vw,40px); }
.section-head h2{ font-size:clamp(24px,3.2vw,32px); margin:0 0 8px; letter-spacing:-.01em; }
.section-head p{ color:var(--ink-dim); margin:0; max-width:60ch; }
.p-divider{ border:none; border-top:1px solid var(--border); margin:0; }

/* ---------- project grid / cards ---------- */
.p-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:24px; }
.p-card{
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius);
  overflow:hidden; display:flex; flex-direction:column;
  box-shadow:var(--shadow-sm); transition:transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.p-card:hover{ transform:translateY(-3px); box-shadow:var(--shadow); border-color:#DADAF5; }
.p-card-thumb{
  aspect-ratio:16/10; background:var(--border-soft) center/cover no-repeat;
  display:flex; align-items:center; justify-content:center;
  color:var(--ink-faint); font-size:12px;
}
.p-card-body{ padding:18px 20px 22px; display:flex; flex-direction:column; gap:8px; flex:1; }
.p-card-body h3{ font-size:16.5px; margin:0; letter-spacing:-.01em; }
.p-card-meta{ font-size:12.5px; color:var(--ink-faint); }
.p-card-desc{ font-size:14px; color:var(--ink-dim); margin:0; flex:1; }
.p-tags{ display:flex; flex-wrap:wrap; gap:6px; margin-top:4px; }
.p-tag{
  font-size:11.5px; font-weight:600; color:var(--accent); background:var(--accent-dim);
  padding:4px 9px; border-radius:999px;
}
.p-era{ font-size:13px; font-weight:600; color:var(--ink-faint); text-transform:uppercase; letter-spacing:.06em; margin:0 0 16px; }

/* ---------- about page ---------- */
.p-about-grid{ display:grid; grid-template-columns:280px 1fr; gap:48px; align-items:start; }
@media (max-width:800px){ .p-about-grid{ grid-template-columns:1fr; } }
.p-avatar{
  width:100%; aspect-ratio:1; border-radius:var(--radius-lg);
  background:linear-gradient(135deg,var(--accent),#7C8CF0);
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-size:56px; font-weight:800; letter-spacing:-.02em;
}
.p-skill-list{ margin:20px 0 0; padding:0; list-style:none; display:flex; flex-direction:column; gap:10px; }
.p-skill-list li{
  font-size:14px; font-weight:500; color:var(--ink);
  padding:10px 14px; background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-sm);
}
.prose{ color:var(--ink); font-size:15.5px; }
.prose p{ margin:0 0 16px; }
.prose p:last-child{ margin-bottom:0; }
.p-focus-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:20px; margin-top:24px; }
.p-focus-card{ padding:22px; border:1px solid var(--border); border-radius:var(--radius); background:var(--surface); }
.p-focus-card h3{ font-size:15px; margin:0 0 8px; }
.p-focus-card p{ font-size:13.5px; color:var(--ink-dim); margin:0; }

/* ---------- project detail ---------- */
.p-crumb{ font-size:13px; color:var(--ink-faint); margin-bottom:20px; display:block; }
.p-crumb a{ color:var(--ink-dim); font-weight:600; }
.p-crumb a:hover{ color:var(--accent); }
.p-detail-hero{ display:grid; grid-template-columns:1.4fr 1fr; gap:40px; align-items:start; margin-bottom:16px; }
@media (max-width:900px){ .p-detail-hero{ grid-template-columns:1fr; } }
.p-media{ border-radius:var(--radius-lg); overflow:hidden; border:1px solid var(--border); background:var(--border-soft); }
.p-media img{ width:100%; }
.p-media .ratio{ position:relative; width:100%; padding-top:56.25%; }
.p-media .ratio iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; }
.p-info h1{ font-size:clamp(24px,3vw,32px); margin:0 0 16px; letter-spacing:-.01em; }
.p-meta{ display:flex; flex-direction:column; gap:8px; margin-bottom:16px; font-size:14px; }
.p-meta div b{ color:var(--ink-faint); font-weight:600; text-transform:uppercase; font-size:11px; letter-spacing:.05em; display:block; margin-bottom:2px; }
.p-detail-nav{
  display:flex; justify-content:space-between; gap:16px; margin-top:48px;
  padding-top:24px; border-top:1px solid var(--border);
  font-size:14px; font-weight:600;
}
.p-detail-nav a{ color:var(--ink-dim); }
.p-detail-nav a:hover{ color:var(--accent); }

/* ---------- contact ---------- */
.p-contact-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:40px; align-items:start; }
@media (max-width:800px){ .p-contact-grid{ grid-template-columns:1fr; } }
.p-panel{ background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); padding:clamp(20px,3vw,32px); }
.p-form-row{ margin-bottom:16px; display:flex; flex-direction:column; gap:6px; }
.p-form-row label{ font-size:12.5px; font-weight:600; color:var(--ink-dim); text-transform:uppercase; letter-spacing:.04em; }
.p-form-row input, .p-form-row textarea{
  font-family:var(--font); font-size:14.5px; padding:11px 12px;
  border:1px solid var(--border); border-radius:var(--radius-sm); background:var(--bg);
  color:var(--ink);
}
.p-form-row textarea{ min-height:120px; resize:vertical; }
.p-form-row input:focus, .p-form-row textarea:focus{ outline:2px solid var(--accent-dim); border-color:var(--accent); }
.p-contact-links{ display:flex; flex-direction:column; gap:10px; margin-top:16px; }
.p-contact-links a{ font-weight:600; font-size:14.5px; color:var(--accent); }
.p-contact-links a:hover{ text-decoration:underline; }

/* ---------- resume ---------- */
.p-resume-embed{
  width:100%; height:80vh;
  border:1px solid var(--border); border-radius:var(--radius);
  background:var(--surface); box-shadow:var(--shadow-sm);
}

/* ---------- footer ---------- */
.p-footer{ border-top:1px solid var(--border); padding:28px 0 84px; margin-top:40px; }
.p-footer-inner{ display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap; font-size:13px; color:var(--ink-faint); }
.p-footer a{ color:var(--ink-dim); font-weight:500; }
.p-footer a:hover{ color:var(--accent); }

/* mode switch pill (matches game theme placement, restyled clean) */
.mode-switch{
  position:fixed; right:clamp(12px,2vw,24px); bottom:clamp(12px,2vw,24px);
  z-index:50;
  font-size:13px; font-weight:600;
  color:var(--accent-ink);
  background:var(--ink);
  padding:11px 16px; border-radius:999px;
  box-shadow:var(--shadow);
  text-decoration:none; white-space:nowrap;
  max-width:44vw; overflow:hidden; text-overflow:ellipsis;
}
.mode-switch:hover{ background:var(--accent); }
@media (max-width:600px){ .mode-switch{ font-size:12px; padding:9px 13px; } }

/* back-to-start pill (opposite corner from mode-switch) */
.back-start{
  position:fixed; left:clamp(12px,2vw,24px); bottom:clamp(12px,2vw,24px);
  z-index:50;
  font-size:13px; font-weight:600;
  color:var(--ink);
  background:var(--surface);
  border:1px solid var(--border);
  padding:11px 16px; border-radius:999px;
  box-shadow:var(--shadow-sm);
  text-decoration:none; white-space:nowrap;
  max-width:44vw; overflow:hidden; text-overflow:ellipsis;
}
.back-start:hover{ background:var(--border-soft); box-shadow:var(--shadow); }
@media (max-width:600px){ .back-start{ font-size:12px; padding:9px 13px; } }