/* ============================================================
   Sumanth G — Portfolio · Design System (foundation)
   Terminal-themed, warm dark. All sections consume these tokens.
   ============================================================ */

:root {
  /* palette */
  --bg:        #0c0a08;
  --bg-elev:   #100d0a;
  --term:      #100d0a;
  --term-bar:  #171209;
  --surface:   rgba(255, 255, 255, 0.045);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border:    #2c2418;
  --border-soft: rgba(255, 255, 255, 0.12);

  --text:      #ede6d8;
  --text-dim:  #b09a78;
  --muted:     #7a6a4f;

  --amber:     #f0a868;
  --amber-2:   #ffc27d;
  --coral:     #e07a5f;
  --teal:      #5eead4;

  --glow-amber: rgba(240, 168, 104, 0.20);
  --glow-coral: rgba(224, 122, 95, 0.18);

  /* type */
  --font-mono: 'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, monospace;
  --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

  /* scale */
  --maxw: 1060px;
  --radius: 14px;
  --radius-sm: 9px;
  --gap: 22px;
  --section-pad: 110px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* subtle global dot-grid + vignette behind everything */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background-image: radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 90%);
}
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(60% 50% at 80% 0%, var(--glow-amber), transparent 70%),
    radial-gradient(50% 40% at 0% 30%, var(--glow-coral), transparent 70%);
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
::selection { background: var(--amber); color: #14110b; }

/* ---------- layout helpers ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--section-pad) 0; position: relative; }
.section-head { margin-bottom: 46px; }
.kicker {
  font-family: var(--font-mono); font-size: 13px; color: var(--amber);
  letter-spacing: 0.5px; display: inline-flex; align-items: center; gap: 8px;
}
.kicker::before { content: "$"; color: var(--muted); }
.section-title {
  font-size: clamp(28px, 4vw, 40px); font-weight: 800; letter-spacing: -1px;
  margin-top: 12px; line-height: 1.05;
}
.section-sub { color: var(--text-dim); margin-top: 12px; max-width: 60ch; }

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  background: rgba(12, 10, 8, 0.55);
  backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.nav.scrolled { border-bottom-color: var(--border); background: rgba(12, 10, 8, 0.82); }
.nav-brand { font-family: var(--font-mono); font-weight: 600; font-size: 15px; letter-spacing: -0.3px; }
.nav-brand .b-prompt { color: var(--amber); }
.nav-brand .b-cursor { color: var(--amber); animation: blink 1.1s steps(2) infinite; }
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-links a {
  font-size: 14px; color: var(--text-dim); padding: 8px 13px; border-radius: 8px;
  transition: color .2s var(--ease), background .2s var(--ease); position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--surface); }
.nav-cta {
  font-family: var(--font-sans); font-weight: 600; font-size: 14px;
  color: #14110b !important; background: linear-gradient(110deg, var(--amber), var(--amber-2));
  padding: 9px 16px !important; border-radius: 9px;
  box-shadow: 0 0 0 1px rgba(240,168,104,.3), 0 8px 22px -8px var(--amber);
}
.nav-cta:hover { background: linear-gradient(110deg, var(--amber-2), var(--amber)) !important; }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 22px; cursor: pointer; font-family: var(--font-mono); }

/* ---------- hero ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 120px 0 80px; overflow: hidden; }
.hero-blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .5; z-index: 0; }
.hero-blob.b1 { width: 480px; height: 480px; top: -160px; right: -100px; background: radial-gradient(circle, var(--amber), transparent 70%); animation: floaty 14s ease-in-out infinite alternate; }
.hero-blob.b2 { width: 420px; height: 420px; bottom: -180px; left: -120px; background: radial-gradient(circle, var(--coral), transparent 70%); animation: floaty 17s ease-in-out infinite alternate-reverse; }

.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; position: relative; z-index: 1; }
.hero-intro { max-width: 30ch; }
.hero-avail {
  display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-mono);
  font-size: 13px; color: var(--text-dim); background: var(--surface);
  border: 1px solid var(--border-soft); padding: 7px 13px; border-radius: 999px; backdrop-filter: blur(6px);
}
.hero-avail .live { width: 8px; height: 8px; border-radius: 50%; background: #34d399; box-shadow: 0 0 10px #34d399; animation: pulse 1.8s ease-in-out infinite; }
.hero-name { font-size: clamp(36px, 8vw, 76px); font-weight: 800; letter-spacing: -2.5px; line-height: 0.98; margin: 22px 0 0; white-space: nowrap; }
.hero-name .grad { background: linear-gradient(110deg, var(--amber) 10%, var(--amber-2) 45%, var(--coral) 90%); background-size: 200% auto; -webkit-background-clip: text; background-clip: text; color: transparent; animation: shine 7s linear infinite; }
.hero-role { font-family: var(--font-mono); font-size: clamp(15px, 2vw, 19px); color: var(--text-dim); margin-top: 18px; }
.hero-tag { color: var(--text-dim); font-size: 17px; margin-top: 20px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; padding: 12px 20px; border-radius: 10px; border: 1px solid transparent; cursor: pointer; transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease); }
.btn .arrow { transition: transform .2s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn-primary { color: #14110b; background: linear-gradient(110deg, var(--amber), var(--amber-2)); box-shadow: 0 10px 30px -10px var(--amber); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -10px var(--amber); }
.btn-ghost { color: var(--text); background: var(--surface); border-color: var(--border-soft); backdrop-filter: blur(6px); }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--amber); background: var(--surface-2); }

/* terminal window (hero right) */
.term-win { background: var(--term); border: 1px solid var(--border); border-radius: 13px; box-shadow: 0 40px 90px -30px #000, inset 0 0 0 1px rgba(255,255,255,.03); overflow: hidden; }
.term-bar { display: flex; align-items: center; gap: 8px; padding: 12px 14px; background: var(--term-bar); border-bottom: 1px solid var(--border); }
.term-bar .tl { width: 12px; height: 12px; border-radius: 50%; }
.tl.r { background: #ff5f57; } .tl.y { background: #febc2e; } .tl.g { background: #28c840; }
.term-bar .title { margin-left: 9px; font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.term-body { padding: 22px 24px; font-family: var(--font-mono); font-size: 14px; line-height: 1.95; }
.term-body .dollar { color: var(--amber); }
.term-body .gray { color: var(--muted); }
.term-body .out { color: var(--text); }
.term-body .dim { color: var(--text-dim); }
.term-body .hl { color: var(--amber); }
.t-line { display: block; }
.t-line.reveal-line { opacity: 0; transform: translateY(6px); }
.t-line.shown { opacity: 1; transform: none; transition: opacity .45s var(--ease), transform .45s var(--ease); }
.type-target::after { content: "▋"; color: var(--amber); animation: blink 1.05s steps(2) infinite; margin-left: 1px; }
.type-target.done::after { content: ""; }
.term-links { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 6px; }
.term-links a { color: var(--teal); text-underline-offset: 3px; text-decoration: underline; transition: color .2s; }
.term-links a:hover { color: var(--amber); }

/* ---------- shared card primitive (sections may extend) ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--radius);
  transition: transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: var(--amber); box-shadow: 0 20px 50px -24px var(--amber); }
.tag {
  font-family: var(--font-mono); font-size: 12px; color: var(--text-dim);
  background: var(--surface); border: 1px solid var(--border-soft); padding: 4px 10px; border-radius: 7px;
}

/* ---------- scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
.reveal[data-delay="3"] { transition-delay: .24s; }
.reveal[data-delay="4"] { transition-delay: .32s; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 40px 0; color: var(--muted); font-family: var(--font-mono); font-size: 13px; }
.footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 14px; align-items: center; }
.footer a { color: var(--text-dim); transition: color .2s; }
.footer a:hover { color: var(--amber); }

/* ---------- keyframes ---------- */
@keyframes blink { 50% { opacity: 0; } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
@keyframes shine { to { background-position: 200% center; } }
@keyframes floaty { to { transform: translate(40px, 34px) scale(1.12); } }
@keyframes riseUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- easter egg toast ---------- */
.egg-toast {
  position: fixed; bottom: 26px; left: 50%; translate: -50% 30px;
  background: var(--term); border: 1px solid var(--amber); color: var(--text);
  font-family: var(--font-mono); font-size: 14px; padding: 14px 20px; border-radius: 12px;
  box-shadow: 0 20px 50px -16px var(--amber); z-index: 100; opacity: 0; pointer-events: none;
  transition: opacity .4s var(--ease), translate .4s var(--ease);
}
.egg-toast.show { opacity: 1; translate: -50% 0; }
.egg-toast .hl { color: var(--amber); }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  :root { --section-pad: 78px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .term-win { order: 2; }
  .nav-links { position: fixed; inset: 0 0 0 auto; width: min(78vw, 320px); flex-direction: column; align-items: stretch; gap: 6px; background: var(--bg-elev); border-left: 1px solid var(--border); padding: 84px 18px 24px; transform: translateX(100%); transition: transform .3s var(--ease); }
  .nav-links.open { transform: none; }
  .nav-links a { font-size: 16px; padding: 12px 14px; }
  .nav-toggle { display: block; z-index: 60; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .hero-actions { gap: 10px; }
  .btn { flex: 1 1 auto; justify-content: center; }
}