/* ============================================================
   XTREME ITERATION — sci-fi terminal aesthetic
   ============================================================ */

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

/* --- palette --- */
:root {
  --bg:          #0a0e14;
  --bg-panel:    rgba(10, 14, 20, 0.88);
  --green:       #00ff9c;
  --green-dim:   #00cc7a;
  --green-glow:  rgba(0, 255, 156, 0.15);
  --amber:       #ffb000;
  --amber-dim:   #cc8d00;
  --amber-glow:  rgba(255, 176, 0, 0.12);
  --cyan:        #00e5ff;
  --cyan-dim:    #00b8cc;
  --red:         #ff3860;
  --white:       #c5d0db;
  --white-bright:#e8edf2;
  --comment:     #5c6773;
  --border:      rgba(0, 255, 156, 0.12);
  --font-mono:   'Fira Code', 'Share Tech Mono', 'Courier New', monospace;
  --scanline-opacity: 0.03;
}

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

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

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

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

/* --- p5 canvas background --- */
#p5-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
}
#p5-bg canvas {
  display: block;
}

/* --- main layout --- */
.terminal-wrap {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- nav bar — looks like a process status line --- */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  padding: 0.6rem 0;
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.nav-brand {
  color: var(--green);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  white-space: nowrap;
}
.nav-brand .prompt { color: var(--amber); }

.nav-links {
  display: flex;
  gap: 0.2rem;
  flex-wrap: wrap;
  list-style: none;
}

.nav-links a {
  color: var(--comment);
  text-decoration: none;
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
  border-radius: 3px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a::before { content: './'; color: var(--green-dim); }
.nav-links a:hover,
.nav-links a.active {
  color: var(--green);
  background: var(--green-glow);
}

.nav-status {
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--comment);
  white-space: nowrap;
}
.nav-status .dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 4px;
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* --- hero section --- */
.hero {
  padding: 6rem 0 4rem;
  position: relative;
}

.hero-prompt {
  color: var(--comment);
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}
.hero-prompt .path { color: var(--cyan); }
.hero-prompt .sym  { color: var(--green); }

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--green);
  line-height: 1.2;
  margin-bottom: 1rem;
  text-shadow: 0 0 30px var(--green-glow);
}

.hero h1 .cursor {
  display: inline-block;
  width: 0.6em;
  height: 1.1em;
  background: var(--green);
  margin-left: 4px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero .subtitle {
  font-size: 1.05rem;
  color: var(--white);
  max-width: 640px;
}

/* --- section blocks — look like terminal output --- */
.section {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.section-header .run-marker {
  color: var(--amber);
  font-size: 0.8rem;
  white-space: nowrap;
}

.section-header h2 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--green);
}

.section p,
.section li {
  color: var(--white);
  font-size: 0.92rem;
  margin-bottom: 0.8rem;
}

.section ul, .section ol {
  padding-left: 1.5rem;
}
.section li::marker { color: var(--green-dim); }

/* --- output blocks (quoted/highlighted content) --- */
.output-block {
  background: rgba(0, 255, 156, 0.04);
  border-left: 3px solid var(--green-dim);
  padding: 1rem 1.2rem;
  margin: 1.2rem 0;
  border-radius: 0 4px 4px 0;
}

.output-block .label {
  color: var(--amber);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}

.output-block p {
  color: var(--white-bright);
  margin-bottom: 0;
}

/* --- command cards (key concepts) --- */
.cmd-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.2rem 1.5rem;
  margin: 1.2rem 0;
  position: relative;
}

.cmd-card::before {
  content: '$';
  position: absolute;
  left: -0.8rem;
  top: 1.2rem;
  color: var(--green);
  font-weight: 700;
}

.cmd-card h3 {
  color: var(--amber);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.cmd-card p {
  font-size: 0.88rem;
}

/* --- grid layouts --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.2rem;
  margin: 1.5rem 0;
}

/* --- process steps (numbered like PID) --- */
.step {
  display: flex;
  gap: 1rem;
  margin: 1.5rem 0;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--green-dim);
  border-radius: 4px;
  color: var(--green);
  font-weight: 700;
  font-size: 0.9rem;
}

.step-body h3 {
  color: var(--amber);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.step-body p {
  font-size: 0.88rem;
}

/* --- inline highlights --- */
.hl-green  { color: var(--green); }
.hl-amber  { color: var(--amber); }
.hl-cyan   { color: var(--cyan); }
.hl-red    { color: var(--red); }

code, .inline-cmd {
  background: rgba(0, 255, 156, 0.08);
  color: var(--green);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  font-size: 0.88em;
}

/* --- CTA block --- */
.cta-block {
  text-align: center;
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

.cta-block p {
  color: var(--comment);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.25s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--green);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--white-bright);
  box-shadow: 0 0 20px var(--green-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--green);
  border: 1px solid var(--green-dim);
}
.btn-secondary:hover {
  background: var(--green-glow);
}

/* --- footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 2rem;
  font-size: 0.75rem;
  color: var(--comment);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer a {
  color: var(--green-dim);
  text-decoration: none;
}
.footer a:hover { color: var(--green); }

/* --- blog list --- */
.blog-entry {
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
}

.blog-entry .datestamp {
  color: var(--comment);
  font-size: 0.75rem;
}

.blog-entry h3 {
  color: var(--green);
  font-size: 1rem;
  margin: 0.3rem 0;
}
.blog-entry h3 a {
  color: inherit;
  text-decoration: none;
}
.blog-entry h3 a:hover { text-decoration: underline; }

.blog-entry .excerpt {
  font-size: 0.85rem;
  color: var(--white);
}

/* --- FAQ --- */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 1.2rem 0;
}

.faq-item summary {
  cursor: pointer;
  color: var(--amber);
  font-weight: 600;
  font-size: 0.92rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.faq-item summary::before {
  content: '>';
  color: var(--green);
  transition: transform 0.2s;
}

.faq-item[open] summary::before {
  content: 'v';
}

.faq-item .faq-answer {
  padding: 0.8rem 0 0 1.2rem;
  font-size: 0.88rem;
}

/* --- contact form --- */
.form-group {
  margin-bottom: 1.2rem;
}

.form-group label {
  display: block;
  color: var(--green-dim);
  font-size: 0.8rem;
  margin-bottom: 0.3rem;
}
.form-group label::before { content: '$ '; color: var(--green); }

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  background: rgba(0, 255, 156, 0.04);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--white-bright);
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--green);
  box-shadow: 0 0 8px var(--green-glow);
}

.form-group textarea { min-height: 120px; resize: vertical; }

/* --- responsive --- */
@media (max-width: 640px) {
  .nav-inner { gap: 0.5rem; }
  .nav-status { display: none; }
  .hero { padding: 4rem 0 2.5rem; }
  .card-grid { grid-template-columns: 1fr; }
  .step { flex-direction: column; gap: 0.5rem; }
}

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

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

/* --- typing animation for elements with .typewriter --- */
.typewriter {
  overflow: hidden;
  white-space: nowrap;
  border-right: 2px solid var(--green);
  animation: typewriter-expand 1.5s steps(40, end) forwards,
             blink-caret 0.75s step-end infinite;
  width: 0;
}

@keyframes typewriter-expand {
  from { width: 0; }
  to   { width: 100%; }
}

@keyframes blink-caret {
  0%, 100% { border-color: var(--green); }
  50%      { border-color: transparent; }
}

/* --- glow accent for key phrases --- */
.glow {
  text-shadow: 0 0 8px var(--green-glow), 0 0 20px var(--green-glow);
}