/* ============================================================
   CIPHER OS — INDEX / BOOT SEQUENCE
   Aesthetic: Military-grade system diagnostic terminal
   Fonts: Orbitron (HUD) + JetBrains Mono (data) + Rajdhani (body)
   ============================================================ */

:root {
  --bg:         #020508;
  --bg2:        #050d14;
  --surface:    #091520;
  --surface2:   #0c1d2e;
  --cyan:       #00d4ff;
  --cyan-dim:   rgba(0,212,255,0.15);
  --cyan-glow:  rgba(0,212,255,0.4);
  --purple:     #7b2fff;
  --purple-dim: rgba(123,47,255,0.15);
  --green:      #00ff88;
  --red:        #ff3366;
  --amber:      #ffaa00;
  --text:       #c8dde8;
  --text-dim:   #4a6a80;
  --text-muted: #1e3040;
  --border:     rgba(0,212,255,0.1);
  --border-act: rgba(0,212,255,0.35);
  --glow-sm:    0 0 12px rgba(0,212,255,0.3);
  --glow-md:    0 0 24px rgba(0,212,255,0.45), 0 0 48px rgba(0,212,255,0.15);
  --glow-lg:    0 0 40px rgba(0,212,255,0.6), 0 0 80px rgba(0,212,255,0.2);
  --font-hud:   'Orbitron', monospace;
  --font-mono:  'JetBrains Mono', 'Share Tech Mono', monospace;
  --font-body:  'Rajdhani', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
  cursor: none;
}

/* ── CUSTOM CURSOR ─────────────────────────────────────────── */
.cursor {
  width: 8px; height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  box-shadow: var(--glow-sm);
  mix-blend-mode: screen;
  transition: transform 0.06s;
}
.cursor-ring {
  width: 28px; height: 28px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9998;
  transition: all 0.16s ease;
  opacity: 0.35;
}
.cursor-ring.click { transform: scale(0.5); opacity: 0.9; }

/* ── SCANLINES OVERLAY ─────────────────────────────────────── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent, transparent 2px,
    rgba(0,212,255,0.014) 2px, rgba(0,212,255,0.014) 4px
  );
  pointer-events: none;
  z-index: 8000;
  animation: scanline-scroll 12s linear infinite;
}
@keyframes scanline-scroll {
  from { background-position: 0 0; }
  to   { background-position: 0 120px; }
}

/* ── GRAIN ─────────────────────────────────────────────────── */
body::after {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 7999;
  opacity: 0.5;
}

/* ── NAV ───────────────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 500;
  height: 56px;
  display: flex; align-items: center;
  padding: 0 2rem;
  background: rgba(2,5,8,0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}
nav::after {
  content: '';
  position: absolute; bottom: 0; left: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.4;
}
.nav-logo {
  font-family: var(--font-hud);
  font-size: 1rem;
  font-weight: 900;
  color: var(--cyan);
  letter-spacing: 6px;
  text-shadow: var(--glow-sm);
}
.nav-links {
  display: flex; gap: 2.5rem;
  list-style: none;
  margin-left: auto;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 3px;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--cyan); text-shadow: var(--glow-sm); }

/* ── BOOT SCREEN ───────────────────────────────────────────── */
#boot-overlay {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 600;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column;
  gap: 0;
  transition: opacity 0.8s ease;
}
#boot-overlay.fade-out { opacity: 0; pointer-events: none; }

.boot-logo {
  font-family: var(--font-hud);
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 900;
  color: var(--cyan);
  text-shadow: var(--glow-lg);
  letter-spacing: 16px;
  animation: logo-pulse 1.5s ease-in-out infinite alternate;
}
@keyframes logo-pulse {
  from { text-shadow: 0 0 20px rgba(0,212,255,0.5); }
  to   { text-shadow: var(--glow-lg); }
}
.boot-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-top: 12px;
  margin-bottom: 40px;
}
.boot-log {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  letter-spacing: 1px;
  width: min(500px, 90vw);
  min-height: 180px;
  line-height: 2.2;
}
.boot-log .log-line { opacity: 0; animation: log-appear 0.3s forwards; }
.boot-log .log-ok   { color: var(--green); }
.boot-log .log-warn { color: var(--amber); }
.boot-log .log-err  { color: var(--red); }
@keyframes log-appear {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}
.boot-bar-wrap {
  width: min(500px, 90vw);
  height: 3px;
  background: rgba(0,212,255,0.1);
  border-radius: 2px;
  margin-top: 24px;
  overflow: hidden;
}
.boot-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--purple), var(--cyan));
  border-radius: 2px;
  box-shadow: 0 0 8px var(--cyan);
  transition: width 2.8s cubic-bezier(0.2, 0, 0.4, 1);
}
.boot-enter-btn {
  display: none;
  margin-top: 32px;
  font-family: var(--font-hud);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--bg);
  background: var(--cyan);
  border: none;
  padding: 14px 36px;
  cursor: pointer;
  text-transform: uppercase;
  box-shadow: var(--glow-md);
  transition: all 0.25s;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
  animation: btn-pulse 1.5s ease-in-out infinite alternate;
}
@keyframes btn-pulse {
  from { box-shadow: var(--glow-sm); }
  to   { box-shadow: var(--glow-lg); }
}
.boot-enter-btn:hover { transform: scale(1.04); }
.boot-enter-btn.visible { display: block; }

/* ── HERO ──────────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 80px 2rem 4rem;
  position: relative;
  overflow: hidden;
}
#hero-canvas {
  position: absolute; inset: 0;
  z-index: 0;
}
.hero-inner {
  position: relative; z-index: 2;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--cyan);
  border: 1px solid var(--border-act);
  padding: 5px 20px;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 28px;
  animation: badge-pulse 2s infinite;
}
@keyframes badge-pulse {
  0%,100% { box-shadow: none; }
  50%      { box-shadow: var(--glow-sm); }
}
.hero-title {
  font-family: var(--font-hud);
  font-size: clamp(4.5rem, 14vw, 10rem);
  font-weight: 900;
  color: var(--cyan);
  text-shadow: var(--glow-md);
  letter-spacing: 12px;
  line-height: 1;
  margin-bottom: 16px;
  position: relative;
  animation: title-flicker 8s infinite;
}
@keyframes title-flicker {
  0%,93%,100% { opacity: 1; }
  94% { opacity: 0.75; }
  95% { opacity: 1; }
  96% { opacity: 0.5; }
  97% { opacity: 1; }
}
/* Glitch effect */
.hero-title::before,
.hero-title::after {
  content: attr(data-text);
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  font-family: inherit; font-size: inherit;
  font-weight: inherit; letter-spacing: inherit;
}
.hero-title::before {
  color: var(--purple);
  animation: glitch-a 5s infinite;
  clip-path: polygon(0 20%, 100% 20%, 100% 45%, 0 45%);
}
.hero-title::after {
  color: #00ffee;
  animation: glitch-b 5s infinite;
  clip-path: polygon(0 60%, 100% 60%, 100% 80%, 0 80%);
}
@keyframes glitch-a {
  0%,88%,100% { transform: translate(0); }
  90% { transform: translate(-4px, 2px); }
  92% { transform: translate(4px, -2px); }
}
@keyframes glitch-b {
  0%,88%,100% { transform: translate(0); }
  91% { transform: translate(4px, 1px); }
  93% { transform: translate(-4px, -1px); }
}
.hero-sub {
  font-family: var(--font-mono);
  font-size: clamp(0.65rem, 1.8vw, 0.85rem);
  color: var(--text-dim);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex; gap: 0;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.hero-stat {
  text-align: center;
  padding: 20px 32px;
  border: 1px solid var(--border);
  position: relative;
  background: rgba(0,212,255,0.02);
  transition: all 0.3s;
}
.hero-stat + .hero-stat { border-left: none; }
.hero-stat:hover { border-color: var(--border-act); background: var(--cyan-dim); }
.hero-stat-num {
  display: block;
  font-family: var(--font-hud);
  font-size: 2rem;
  font-weight: 900;
  color: var(--cyan);
  text-shadow: var(--glow-sm);
}
.hero-stat-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-dim);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-top: 4px;
}
.enter-btn {
  font-family: var(--font-hud);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--bg);
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  border: none;
  padding: 16px 48px;
  cursor: pointer;
  text-transform: uppercase;
  box-shadow: var(--glow-md);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  clip-path: polygon(10px 0%, 100% 0%, calc(100% - 10px) 100%, 0% 100%);
}
.enter-btn::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.enter-btn:hover { transform: translateY(-2px) scale(1.03); box-shadow: var(--glow-lg); }
.enter-btn:hover::before { opacity: 1; }

/* ── SECTION COMMONS ───────────────────────────────────────── */
section { padding: 6rem 2rem; position: relative; }
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--cyan);
  letter-spacing: 5px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-hud);
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: 4px;
}
.section-line {
  width: 48px; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  box-shadow: var(--glow-sm);
  margin: 20px auto 0;
}
.section-header { text-align: center; margin-bottom: 4rem; }

/* ── SYSTEM CHECK ──────────────────────────────────────────── */
#syscheck {
  background: linear-gradient(180deg, var(--bg), var(--bg2));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.syscheck-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  max-width: 1100px;
  margin: 0 auto;
  background: var(--border);
  border: 1px solid var(--border);
}
.syscheck-item {
  background: var(--bg2);
  padding: 24px 28px;
  display: flex; align-items: center; gap: 16px;
  transition: background 0.3s;
}
.syscheck-item:hover { background: var(--surface); }
.syscheck-led {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.led-online  { background: var(--green);  box-shadow: 0 0 8px var(--green);  animation: led-blink 2s infinite; }
.led-offline { background: var(--red);    box-shadow: 0 0 8px var(--red); }
.led-pending { background: var(--amber);  box-shadow: 0 0 8px var(--amber); animation: led-blink 0.5s infinite; }
@keyframes led-blink {
  0%,100% { opacity: 1; }
  50%      { opacity: 0.4; }
}
.syscheck-name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text);
  letter-spacing: 2px;
  display: block;
}
.syscheck-status {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  display: block;
  margin-top: 3px;
}

/* ── GAUGES ────────────────────────────────────────────────── */
.gauges-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  max-width: 900px;
  margin: 3rem auto 0;
}
.gauge-card {
  background: rgba(0,212,255,0.02);
  border: 1px solid var(--border);
  padding: 28px 32px;
  text-align: center;
  min-width: 200px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.gauge-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 2px; height: 100%;
  background: var(--cyan);
  box-shadow: var(--glow-sm);
}
.gauge-card:hover { border-color: var(--border-act); transform: translateY(-3px); }
.gauge-title {
  font-family: var(--font-hud);
  font-size: 0.65rem;
  letter-spacing: 3px;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.gauge-canvas { display: block; margin: 0 auto; }
.gauge-value {
  font-family: var(--font-hud);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--cyan);
  text-shadow: var(--glow-sm);
  margin-top: 12px;
}
.gauge-unit {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-left: 3px;
}

/* ── SKILLS HEX GRID ───────────────────────────────────────── */
#skills { background: var(--bg); }
.skills-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 3rem;
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 6px 16px;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: var(--glow-sm);
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1px;
  max-width: 1200px;
  margin: 0 auto;
  background: var(--border);
  border: 1px solid var(--border);
}
.skill-card {
  background: var(--bg2);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  cursor: default;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.skill-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}
.skill-card:hover { background: var(--surface); transform: translateY(-2px); z-index: 1; }
.skill-card:hover::before { transform: scaleX(1); }
.skill-card-icon {
  font-size: 1.6rem;
  filter: grayscale(0.3);
  transition: filter 0.3s, transform 0.3s;
}
.skill-card:hover .skill-card-icon { filter: none; transform: scale(1.1); }
.skill-card-name {
  font-family: var(--font-hud);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.skill-card-file {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--purple);
  letter-spacing: 1px;
}
.skill-card-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.5;
}
.skill-card-tags {
  display: flex; flex-wrap: wrap; gap: 5px;
  margin-top: auto;
}
.skill-tag {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  background: rgba(0,212,255,0.06);
  border: 1px solid rgba(0,212,255,0.15);
  color: var(--cyan);
  padding: 2px 8px;
  letter-spacing: 1px;
}
.skill-status {
  position: absolute; top: 12px; right: 12px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
}

/* ── TERMINAL DEMO ─────────────────────────────────────────── */
#demo { background: var(--bg2); }
.terminal {
  max-width: 860px;
  margin: 0 auto;
  background: rgba(0,5,2,0.95);
  border: 1px solid var(--border-act);
  box-shadow: var(--glow-md), inset 0 0 40px rgba(0,212,255,0.02);
  overflow: hidden;
}
.term-bar {
  background: rgba(0,212,255,0.06);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  display: flex; align-items: center; gap: 8px;
}
.term-dot { width: 12px; height: 12px; border-radius: 50%; }
.t-red    { background: #ff5f57; }
.t-amber  { background: #febc2e; }
.t-green  { background: #28c840; }
.term-title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-dim);
  letter-spacing: 2px;
}
.term-body {
  padding: 20px 24px;
  min-height: 320px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 2;
  overflow-y: auto;
}
.t-line { display: flex; gap: 12px; }
.t-prefix { min-width: 90px; }
.t-prefix.sys    { color: var(--text-dim); }
.t-prefix.user   { color: #fff; }
.t-prefix.cipher { color: var(--cyan); }
.t-text          { color: #9ab8cc; }
.t-text.response { color: var(--cyan); }
.t-text.system   { color: var(--text-dim); }

/* ── ABOUT ─────────────────────────────────────────────────── */
#about { background: var(--bg); }
.about-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 4rem;
  max-width: 960px;
  margin: 0 auto;
  align-items: center;
}
.about-avatar {
  width: 180px; height: 180px;
  border: 2px solid var(--cyan);
  box-shadow: var(--glow-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 5rem;
  position: relative;
  background: rgba(0,212,255,0.03);
}
.about-avatar::before {
  content: '';
  position: absolute; inset: -12px;
  border: 1px solid rgba(0,212,255,0.2);
  animation: avatar-spin 10s linear infinite;
}
@keyframes avatar-spin { to { transform: rotate(360deg); } }
.about-name {
  font-family: var(--font-hud);
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 4px;
  margin-bottom: 6px;
}
.about-role {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.about-bio {
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}
.about-links { display: flex; gap: 12px; flex-wrap: wrap; }
.about-link {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--cyan);
  text-decoration: none;
  border: 1px solid rgba(0,212,255,0.3);
  padding: 8px 20px;
  transition: all 0.25s;
}
.about-link:hover { background: var(--cyan); color: var(--bg); box-shadow: var(--glow-sm); }

/* ── FOOTER ────────────────────────────────────────────────── */
footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-logo {
  font-family: var(--font-hud);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--cyan);
  text-shadow: var(--glow-sm);
  letter-spacing: 10px;
  margin-bottom: 12px;
}
.footer-text {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  letter-spacing: 3px;
}

/* ── SCROLL REVEAL ─────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .about-grid { grid-template-columns: 1fr; text-align: center; }
  .about-links { justify-content: center; }
  .hero-stats { gap: 0; }
  .hero-stat { padding: 16px 20px; }
}