/* =========================================================
   Bishnu Thapa portfolio
   Concept: personal status console for a reliability engineer
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --ink:      #0E1526;   /* deep blue-slate base */
  --ink-2:    #0B1120;   /* deeper, for alt sections */
  --panel:    #141D33;   /* raised panel */
  --panel-2:  #18223b;   /* hover / nested */
  --line:     #26324f;   /* hairline border */
  --line-soft:#1d2740;

  --text:     #E7ECF7;   /* primary */
  --muted:    #8B99B8;   /* secondary */
  --faint:    #5f6d8c;   /* tertiary */

  --ok:       #4FD1A1;   /* functional health color, muted emerald */
  --ok-dim:   rgba(79,209,161,0.14);
  --accent:   #F0B45E;   /* single brand accent, amber */
  --accent-2: #f6c884;
  --link:     #7FC1EC;   /* soft cyan for interaction */

  --s1: 0.5rem;
  --s2: 0.75rem;
  --s3: 1rem;
  --s4: 1.5rem;
  --s5: 2.5rem;
  --s6: 4rem;
  --s7: 6rem;

  --maxw: 1080px;
  --radius: 10px;
  --radius-sm: 7px;

  --sans: "IBM Plex Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --display: "Space Grotesk", var(--sans);
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --shadow: 0 1px 0 rgba(255,255,255,0.02) inset, 0 18px 40px -28px rgba(0,0,0,0.8);
}

[data-theme="light"] {
  --ink:      #F5F7FB;
  --ink-2:    #EEF1F7;
  --panel:    #FFFFFF;
  --panel-2:  #F3F6FC;
  --line:     #D8DEEA;
  --line-soft:#E4E9F2;

  --text:     #16203A;
  --muted:    #55617D;
  --faint:    #8b96ad;

  --ok:       #1FA97C;
  --ok-dim:   rgba(31,169,124,0.12);
  --accent:   #C67C1E;
  --accent-2: #a9691a;
  --link:     #1E6FB0;

  --shadow: 0 1px 0 rgba(255,255,255,0.6) inset, 0 16px 34px -26px rgba(20,30,60,0.35);
}

/* ---------- Reset and base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.12; margin: 0; letter-spacing: -0.01em; }
p { margin: 0 0 var(--s3); }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
ul, ol { margin: 0; padding: 0; list-style: none; }

[data-mono] { font-family: var(--mono); }

.wrap { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--accent); color: #1a1200; padding: 0.6rem 1rem; border-radius: var(--radius-sm);
}
.skip-link:focus { left: 12px; top: 12px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ---------- Status dots ---------- */
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; flex: none; }
.dot-ok { background: var(--ok); box-shadow: 0 0 0 3px var(--ok-dim); }
.dot-warn { background: var(--accent); box-shadow: 0 0 0 3px rgba(240,180,94,0.14); }
.pulse { animation: pulse 2.4s ease-out infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 var(--ok-dim); }
  70% { box-shadow: 0 0 0 8px rgba(79,209,161,0); }
  100% { box-shadow: 0 0 0 0 rgba(79,209,161,0); }
}
@media (prefers-reduced-motion: reduce) { .pulse { animation: none; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--sans); font-weight: 600; font-size: 0.96rem;
  padding: 0.7rem 1.25rem; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer; transition: transform 0.12s ease, background-color 0.2s ease, border-color 0.2s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-accent { background: var(--accent); color: #1a1200; }
.btn-accent:hover { background: var(--accent-2); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ok); color: var(--ok); }
.btn-block { width: 100%; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--ink) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.topbar-inner { display: flex; align-items: center; gap: var(--s4); height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--text); font-family: var(--mono); font-size: 0.9rem; }
.brand:hover { text-decoration: none; }
.brand-host { letter-spacing: -0.02em; }
.nav { display: flex; gap: var(--s4); margin-left: auto; }
.nav a { color: var(--muted); font-size: 0.95rem; }
.nav a:hover, .nav a.active { color: var(--text); text-decoration: none; }
.nav a.active { color: var(--ok); }
.topbar-actions { display: flex; align-items: center; gap: var(--s2); }

.theme-toggle {
  background: transparent; border: 1px solid var(--line); color: var(--muted);
  border-radius: var(--radius-sm); padding: 0.5rem 0.7rem; cursor: pointer; font-size: 0.8rem;
}
.theme-toggle:hover { color: var(--text); border-color: var(--ok); }

.menu-toggle { display: none; flex-direction: column; gap: 4px; background: transparent; border: 0; cursor: pointer; padding: 8px; }
.menu-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.2s ease, opacity 0.2s ease; }

.mobile-nav { display: none; flex-direction: column; padding: 0 1.25rem; border-bottom: 1px solid var(--line-soft); }
.mobile-nav a { padding: 0.85rem 0; color: var(--text); border-top: 1px solid var(--line-soft); }
.mobile-nav.open { display: flex; }

/* ---------- Hero ---------- */
.hero { padding: var(--s7) 0 var(--s6); border-bottom: 1px solid var(--line-soft); }
.hero-grid { display: grid; grid-template-columns: 1.4fr 0.85fr; gap: var(--s5); align-items: center; }

.readout { color: var(--faint); font-size: 0.9rem; margin-bottom: 0.35rem; }
.readout .prompt { color: var(--ok); margin-right: 0.4rem; }
.status-line { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--ok); font-size: 0.9rem; margin: 0 0 var(--s4);
  border: 1px solid var(--line); background: var(--ok-dim); padding: 0.35rem 0.7rem; border-radius: 100px; }

.hero-name { font-size: clamp(2.6rem, 6vw, 4.4rem); font-weight: 700; margin-bottom: 0.4rem; }
.hero-role { font-family: var(--display); font-size: clamp(1.05rem, 2.2vw, 1.4rem); color: var(--accent); font-weight: 500; margin-bottom: var(--s3); }
.hero-blurb { max-width: 54ch; color: var(--muted); font-size: 1.05rem; }
.hero-cta { display: flex; gap: var(--s2); flex-wrap: wrap; margin-top: var(--s4); }

.hero-panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: var(--s4); box-shadow: var(--shadow); border-top: 2px solid var(--ok);
}
.uptime { display: flex; flex-direction: column; padding-bottom: var(--s3); margin-bottom: var(--s3); border-bottom: 1px solid var(--line-soft); }
.uptime-num { font-family: var(--display); font-size: 3.4rem; font-weight: 700; line-height: 1; color: var(--text); }
.uptime-num .plus { color: var(--ok); }
.uptime-label { color: var(--muted); font-size: 0.9rem; margin-top: 0.35rem; }
.svc-strip { display: flex; flex-direction: column; gap: 0.7rem; }
.svc-strip li { display: flex; align-items: center; gap: 0.6rem; font-size: 0.95rem; }
.svc-strip .tag { margin-left: auto; color: var(--ok); font-size: 0.72rem; opacity: 0.85; }

/* ---------- Sections ---------- */
.section { padding: var(--s7) 0; }
.section-alt { background: var(--ink-2); border-block: 1px solid var(--line-soft); }
.section-head { max-width: 62ch; margin-bottom: var(--s5); }
.section-head h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); margin-bottom: 0.6rem; }
.section-sub { color: var(--muted); margin: 0; }

/* Panels shared */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }

/* ---------- Services grid ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: var(--s3); }
.svc { padding: var(--s4); transition: border-color 0.2s ease, transform 0.12s ease; }
.svc:hover { border-color: var(--ok); }
.svc-top { display: flex; align-items: center; gap: 0.55rem; margin-bottom: var(--s3); }
.svc-top h3 { font-size: 1.08rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chips li { font-family: var(--mono); font-size: 0.78rem; color: var(--muted);
  border: 1px solid var(--line-soft); background: var(--panel-2); padding: 0.25rem 0.55rem; border-radius: 6px; }
.svc-note { grid-column: span 2; border-top: 2px solid var(--accent); }
.svc-para { color: var(--muted); margin: 0; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: var(--s5); align-items: start; }
.about-copy h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); margin-bottom: var(--s3); max-width: 20ch; }
.about-copy p { color: var(--muted); max-width: 60ch; }
.about-card { padding: var(--s4); border-top: 2px solid var(--ok); }
.about-card-title { color: var(--faint); font-size: 0.8rem; margin-bottom: var(--s3); }
.focus-list { display: flex; flex-direction: column; gap: 0.8rem; }
.focus-list li { display: flex; align-items: center; gap: 0.6rem; font-size: 0.98rem; }

/* ---------- Timeline ---------- */
.timeline { position: relative; display: flex; flex-direction: column; gap: var(--s3); padding-left: 1.4rem; }
.timeline::before { content: ""; position: absolute; left: 4px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl-item { position: relative; display: grid; grid-template-columns: 110px 1fr; gap: var(--s3); align-items: start; }
.tl-item::before { content: ""; position: absolute; left: -1.4rem; top: 20px; width: 10px; height: 10px; border-radius: 50%;
  background: var(--ink); border: 2px solid var(--ok); }
.tl-time { color: var(--faint); font-size: 0.8rem; padding-top: 1.1rem; }
.tl-body { padding: var(--s4); }
.tl-body h3 { font-size: 1.12rem; margin-bottom: 0.2rem; }
.tl-org { color: var(--accent); font-size: 0.9rem; margin-bottom: 0.6rem; }
.tl-body p:last-child { margin: 0; color: var(--muted); }

/* ---------- Certifications ---------- */
.registry { padding: 0.4rem var(--s4); border-top: 2px solid var(--ok); }
.cert-list { display: flex; flex-direction: column; }
.cert { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: var(--s3);
  padding: var(--s3) 0; border-bottom: 1px solid var(--line-soft); }
.cert:last-child { border-bottom: 0; }
.cert-check { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%;
  background: var(--ok-dim); color: var(--ok); font-size: 0.85rem; border: 1px solid var(--ok); }
.cert-name { font-weight: 500; }
.cert-issuer { color: var(--muted); font-size: 0.82rem; text-align: right; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s5); align-items: start; }
.contact-lead h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); margin-bottom: var(--s3); max-width: 16ch; }
.contact-lead p { color: var(--muted); max-width: 46ch; }
.contact-list { display: flex; flex-direction: column; gap: 0.9rem; margin-top: var(--s4); }
.contact-list li { display: grid; grid-template-columns: 90px 1fr; align-items: baseline; gap: var(--s3);
  border-bottom: 1px solid var(--line-soft); padding-bottom: 0.9rem; }
.contact-key { color: var(--faint); font-size: 0.8rem; }
a[data-todo] { color: var(--faint); font-style: italic; }

.contact-form { padding: var(--s4); border-top: 2px solid var(--accent); }
.form-note { color: var(--faint); font-size: 0.82rem; margin-bottom: var(--s3); }
.contact-form label { display: block; margin-bottom: var(--s3); }
.contact-form label span { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.35rem; }
.contact-form input, .contact-form textarea {
  width: 100%; font-family: var(--sans); font-size: 0.98rem; color: var(--text);
  background: var(--ink); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 0.65rem 0.8rem;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--ok); }
.form-hint { color: var(--faint); font-size: 0.78rem; margin: var(--s2) 0 0; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line-soft); padding: var(--s4) 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); flex-wrap: wrap; }
.footer-brand { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--muted); font-size: 0.85rem; }
.footer-meta { color: var(--faint); font-size: 0.82rem; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .svc-note { grid-column: auto; }
  .nav { display: none; }
  .menu-toggle { display: flex; }
  .hero { padding-top: var(--s6); }
}
@media (max-width: 520px) {
  body { font-size: 16px; }
  .tl-item { grid-template-columns: 1fr; }
  .tl-time { padding-top: 0; }
  .cert { grid-template-columns: auto 1fr; }
  .cert-issuer { grid-column: 2; text-align: left; }
  .theme-toggle { display: none; }
}