/* ============================================================
   0xmrerror.me — terminal portfolio stylesheet
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@300;400;500;600;700&display=swap');

/* ── design tokens ────────────────────────────────────────── */
:root {
  --bg:          #0d1117;
  --bg-panel:    #111820;
  --bg-card:     #0f1923;
  --border:      #1e2d3d;
  --border-dim:  #162030;
  --green:       #00ff66;
  --green-dim:   #00cc55;
  --green-faint: rgba(0,255,102,.06);
  --green-glow:  rgba(0,255,102,.18);
  --cyan:        #00d4ff;
  --red:         #ff4757;
  --yellow:      #ffd32a;
  --orange:      #ff6b35;
  --text:        #c9d1d9;
  --text-dim:    #6e7a8a;
  --text-faint:  #3d4f60;
  --mono:        'Fira Code', 'JetBrains Mono', 'Courier New', monospace;
  --radius:      4px;
  --transition:  .15s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--mono);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* subtle CRT scanline overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,.03) 2px,
    rgba(0,0,0,.03) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

::selection { background: var(--green); color: var(--bg); }

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ── scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--green-dim); }

/* ── layout helpers ───────────────────────────────────────── */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--wide { max-width: 1100px; }

/* ── top nav ──────────────────────────────────────────────── */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(13,17,23,.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
}

.nav-logo {
  font-size: .875rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: -.01em;
}

.nav-logo span { color: var(--text-dim); font-weight: 400; }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: .8rem;
  color: var(--text-dim);
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active { color: var(--green); text-decoration: none; }

.nav-links a::before { content: './'; color: var(--text-faint); }

/* hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-dim);
  transition: all .2s;
}

/* ── terminal window chrome ───────────────────────────────── */
.term-window {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.term-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: #0a0f15;
  border-bottom: 1px solid var(--border);
}

.term-dots { display: flex; gap: 6px; }

.term-dot {
  width: 11px; height: 11px;
  border-radius: 50%;
}

.dot-r { background: #ff5f56; }
.dot-y { background: #ffbd2e; }
.dot-g { background: #27c93f; }

.term-title {
  font-size: .72rem;
  color: var(--text-dim);
  margin: 0 auto;
  letter-spacing: .04em;
}

.term-body { padding: 20px 24px; }

/* ── prompt line ──────────────────────────────────────────── */
.prompt {
  font-size: .82rem;
  margin-bottom: 6px;
}

.prompt-host { color: var(--green); }
.prompt-sep  { color: var(--text-dim); }
.prompt-path { color: var(--cyan); }
.prompt-sym  { color: var(--text-dim); }
.prompt-cmd  { color: var(--text); }

.cursor {
  display: inline-block;
  width: 8px; height: 1em;
  background: var(--green);
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 50% { opacity: 0; } }

/* ── section labels ───────────────────────────────────────── */
.section-cmd {
  font-size: .78rem;
  color: var(--text-dim);
  margin-bottom: 24px;
  padding: 6px 0 6px 0;
  border-bottom: 1px solid var(--border-dim);
}

.section-cmd .prompt-host { color: var(--green); }

/* ── page sections ────────────────────────────────────────── */
section {
  padding: 80px 0;
}

section:first-of-type { padding-top: 120px; }

/* ── hero ─────────────────────────────────────────────────── */
#hero {
  padding: 140px 0 80px;
  position: relative;
}

#hero .container { position: relative; }

.hero-term { margin-bottom: 32px; }

.hero-term .term-body { padding: 28px 32px; }

.hero-output { margin-top: 16px; }

.hero-name {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--green);
  letter-spacing: -.03em;
  line-height: 1.1;
}

.hero-name .at { color: var(--text-dim); font-weight: 300; }

.hero-role {
  font-size: .9rem;
  color: var(--text-dim);
  margin: 8px 0 20px;
}

.hero-role .highlight { color: var(--cyan); }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  font-size: .72rem;
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-dim);
  background: var(--bg-card);
}

.tag--green { border-color: var(--green-dim); color: var(--green); background: var(--green-faint); }
.tag--cyan  { border-color: rgba(0,212,255,.3); color: var(--cyan); background: rgba(0,212,255,.05); }
.tag--red   { border-color: rgba(255,71,87,.3); color: var(--red); background: rgba(255,71,87,.05); }
.tag--yellow{ border-color: rgba(255,211,42,.3); color: var(--yellow); background: rgba(255,211,42,.05); }

.hero-stat-row {
  display: flex;
  gap: 32px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-dim);
  flex-wrap: wrap;
}

.stat-item { display: flex; flex-direction: column; }
.stat-num { font-size: 1.4rem; font-weight: 700; color: var(--green); }
.stat-lbl { font-size: .72rem; color: var(--text-dim); margin-top: 2px; }

/* ── about / whoami ───────────────────────────────────────── */
#about .term-body { padding: 24px 28px; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 12px;
}

.about-field { display: flex; flex-direction: column; gap: 2px; }
.field-key  { font-size: .72rem; color: var(--text-dim); }
.field-val  { font-size: .84rem; color: var(--text); }
.field-val a { color: var(--cyan); }

.about-bio {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-dim);
  font-size: .86rem;
  color: var(--text-dim);
  line-height: 1.8;
  max-width: 66ch;
}

.about-bio .hl { color: var(--green); }

/* ── skills / arsenal ─────────────────────────────────────── */
#arsenal { background: linear-gradient(180deg, transparent, rgba(0,255,102,.025) 50%, transparent); }

.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 8px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.skill-card:hover {
  border-color: var(--green-dim);
  box-shadow: 0 0 16px var(--green-glow);
}

.skill-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.skill-icon { font-size: 1.1rem; }

.skill-cat {
  font-size: .78rem;
  font-weight: 600;
  color: var(--green);
}

.skill-items { display: flex; flex-direction: column; gap: 8px; }

.skill-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.skill-name { font-size: .78rem; color: var(--text-dim); white-space: nowrap; }

.skill-bar {
  flex: 1;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: var(--green);
  border-radius: 2px;
  box-shadow: 0 0 6px var(--green);
  transform-origin: left;
  animation: fillBar .8s ease forwards;
  transform: scaleX(0);
}

@keyframes fillBar { to { transform: scaleX(1); } }

.skill-pct { font-size: .68rem; color: var(--text-faint); min-width: 28px; text-align: right; }

/* tool tags row */
.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.tool-tag {
  font-size: .68rem;
  padding: 2px 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--text-dim);
}

/* ── experience timeline ──────────────────────────────────── */
.timeline { position: relative; margin-top: 8px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--border);
}

.tl-item {
  position: relative;
  padding: 0 0 32px 28px;
}

.tl-item:last-child { padding-bottom: 0; }

.tl-dot {
  position: absolute;
  left: -4px; top: 6px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.tl-meta {
  font-size: .72rem;
  color: var(--text-faint);
  margin-bottom: 4px;
}

.tl-company { color: var(--green); font-weight: 600; }
.tl-period  { color: var(--text-faint); }

.tl-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.tl-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.tl-bullets li {
  font-size: .8rem;
  color: var(--text-dim);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

.tl-bullets li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--green-dim);
}

/* ── projects ─────────────────────────────────────────────── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-top: 8px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color var(--transition), transform var(--transition);
}

.project-card:hover {
  border-color: var(--green-dim);
  transform: translateY(-2px);
}

.project-card--featured { border-color: rgba(0,255,102,.25); }

.project-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }

.project-name {
  font-size: .9rem;
  font-weight: 600;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 8px;
}

.project-name .feat-badge {
  font-size: .62rem;
  padding: 2px 6px;
  background: rgba(0,255,102,.1);
  border: 1px solid var(--green-dim);
  border-radius: 2px;
  color: var(--green);
}

.project-links { display: flex; gap: 10px; }

.project-link {
  font-size: .72rem;
  color: var(--text-faint);
  transition: color var(--transition);
}

.project-link:hover { color: var(--green); text-decoration: none; }

.project-desc {
  font-size: .8rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.project-stack { display: flex; flex-wrap: wrap; gap: 5px; }

.stack-tag {
  font-size: .68rem;
  padding: 2px 7px;
  background: var(--bg);
  border: 1px solid var(--border-dim);
  border-radius: 2px;
  color: var(--text-faint);
}

/* ── writeups ─────────────────────────────────────────────── */
.writeup-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 12px 0 20px;
}

.filter-btn {
  font-family: var(--mono);
  font-size: .72rem;
  padding: 4px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-dim);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--green-dim);
  color: var(--green);
  background: var(--green-faint);
}

.writeup-list { display: flex; flex-direction: column; gap: 12px; }

.writeup-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: border-color var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.writeup-card:hover {
  border-color: var(--green-dim);
  text-decoration: none;
}

.writeup-idx {
  font-size: .72rem;
  color: var(--text-faint);
  min-width: 28px;
  font-variant-numeric: tabular-nums;
}

.writeup-info { flex: 1; min-width: 0; }

.writeup-title {
  font-size: .88rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.writeup-meta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.diff-badge {
  font-size: .66rem;
  padding: 2px 7px;
  border-radius: 2px;
  font-weight: 600;
}

.diff-easy   { background: rgba(0,255,102,.12); color: var(--green); border: 1px solid var(--green-dim); }
.diff-medium { background: rgba(255,211,42,.1); color: var(--yellow); border: 1px solid rgba(255,211,42,.3); }
.diff-hard   { background: rgba(255,71,87,.1);  color: var(--red);    border: 1px solid rgba(255,71,87,.3); }

.platform-tag {
  font-size: .66rem;
  color: var(--text-faint);
  padding: 2px 7px;
  border: 1px solid var(--border-dim);
  border-radius: 2px;
}

.thm  { border-color: rgba(255,107,53,.3); color: var(--orange); background: rgba(255,107,53,.05); }
.htb  { border-color: rgba(0,255,102,.2);  color: var(--green-dim); background: rgba(0,255,102,.04); }
.ctf  { border-color: rgba(0,212,255,.2);  color: var(--cyan); background: rgba(0,212,255,.04); }

.read-time {
  font-size: .66rem;
  color: var(--text-faint);
}

.writeup-arrow { color: var(--text-faint); font-size: .78rem; transition: color var(--transition); }
.writeup-card:hover .writeup-arrow { color: var(--green); }

/* writeup modal overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.85);
  z-index: 200;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 60px 16px 40px;
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal-window {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 780px;
  overflow: hidden;
  transform: translateY(16px);
  transition: transform .2s;
}

.modal-overlay.open .modal-window { transform: translateY(0); }

.modal-body { padding: 28px 32px; }

.modal-close {
  position: absolute;
  top: 16px; right: 24px;
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--text-dim);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition);
}

.modal-close:hover { color: var(--red); }

.writeup-content h2 { font-size: 1.2rem; color: var(--green); margin-bottom: 8px; }
.writeup-content h3 { font-size: .9rem; color: var(--cyan); margin: 20px 0 8px; }
.writeup-content p  { font-size: .84rem; color: var(--text-dim); margin-bottom: 12px; line-height: 1.8; }

.writeup-content pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: .78rem;
  overflow-x: auto;
  margin: 12px 0;
  line-height: 1.6;
}

.writeup-content code {
  background: rgba(0,255,102,.06);
  padding: 2px 6px;
  border-radius: 2px;
  font-size: .8em;
  color: var(--green);
}

.writeup-content pre code {
  background: none;
  padding: 0;
  color: var(--text);
}

/* syntax highlight tokens */
.tok-comment { color: #4a6a4a; }
.tok-keyword { color: var(--cyan); }
.tok-string  { color: var(--yellow); }
.tok-num     { color: var(--orange); }
.tok-func    { color: var(--green); }

/* ── certifications ───────────────────────────────────────── */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 8px;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.cert-issuer { font-size: .7rem; color: var(--text-faint); }
.cert-name   { font-size: .85rem; font-weight: 600; color: var(--text); }
.cert-date   { font-size: .7rem; color: var(--text-faint); }
.cert-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .68rem;
  color: var(--green);
  margin-top: 4px;
}

.cert-status::before {
  content: '';
  display: block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 5px var(--green);
}

/* ── contact ──────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 8px;
}

.contact-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  transition: border-color var(--transition);
}

.contact-item:hover { border-color: var(--green-dim); }

.contact-label { font-size: .72rem; color: var(--text-faint); margin-bottom: 2px; }
.contact-value { font-size: .84rem; color: var(--green); }
.contact-value a { color: var(--green); }

/* ── footer ───────────────────────────────────────────────── */
#footer {
  padding: 32px 0;
  border-top: 1px solid var(--border-dim);
  text-align: center;
}

.footer-prompt { font-size: .78rem; color: var(--text-faint); }
.footer-prompt .green { color: var(--green); }

/* ── responsive ───────────────────────────────────────────── */
@media (max-width: 640px) {
  .nav-links { display: none; flex-direction: column; gap: 0; position: absolute; top: 56px; left: 0; right: 0; background: var(--bg-panel); border-bottom: 1px solid var(--border); padding: 12px 0; }
  .nav-links.open { display: flex; }
  .nav-links li a { display: block; padding: 10px 24px; }
  .nav-toggle { display: flex; }

  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-stat-row { gap: 20px; }
  .term-body { padding: 16px 18px; }
  .modal-body { padding: 20px 18px; }
  .writeup-card { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .project-grid { grid-template-columns: 1fr; }
  .skill-grid { grid-template-columns: 1fr; }
}

/* ── typing animation ─────────────────────────────────────── */
.typewriter {
  overflow: hidden;
  border-right: 2px solid var(--green);
  white-space: nowrap;
  animation:
    typing 2s steps(30, end) forwards,
    blink-caret .75s step-end infinite;
}

@keyframes typing {
  from { width: 0; }
  to   { width: 100%; }
}

@keyframes blink-caret {
  50% { border-color: transparent; }
}

/* ── intersection observer fade ──────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .4s ease, transform .4s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── uptime badge ─────────────────────────────────────────── */
.uptime {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .7rem;
  color: var(--green);
  background: var(--green-faint);
  border: 1px solid var(--green-dim);
  border-radius: 2px;
  padding: 2px 8px;
  margin-top: 12px;
}

.uptime-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--green-glow); }
  50% { box-shadow: 0 0 0 5px transparent; }
}

/* ── THM rank badge ───────────────────────────────────────── */
.rank-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--green-faint);
  border: 1px solid var(--green-dim);
  border-radius: var(--radius);
  font-size: .76rem;
  color: var(--green);
  margin-top: 12px;
}

.rank-badge .rank-pct { font-weight: 700; font-size: .9rem; }