/* ==========================================================================
   Nikhil — CyberSecurity Consultant portfolio
   Hacker terminal aesthetic: deep black, neon green, monospace.
   ========================================================================== */

:root {
  --bg:          #0a0a0a;
  --bg-2:        #111214;
  --bg-3:        #17191c;
  --fg:          #e6e6e6;
  --fg-dim:      #7a7a7a;
  --fg-mute:     #4a4a4a;
  --accent:      #00ff9c;
  --accent-soft: rgba(0, 255, 156, 0.08);
  --accent-mid:  rgba(0, 255, 156, 0.20);
  --danger:      #ff5572;
  --warn:        #ffbd2e;
  --blue:        #4fc3f7;
  --border:      rgba(0, 255, 156, 0.15);
  --border-soft: rgba(255, 255, 255, 0.06);
  --mono:        'JetBrains Mono', ui-monospace, SFMono-Regular, 'SF Mono',
                 Menlo, Consolas, 'Liberation Mono', monospace;
  --glow:        0 0 12px rgba(0, 255, 156, 0.35);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--mono);
  background: var(--bg);
  color: var(--fg);
  font-size: 15px;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    radial-gradient(ellipse at 20% -10%, rgba(0, 255, 156, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 110%, rgba(79, 195, 247, 0.05) 0%, transparent 50%);
  background-attachment: fixed;
}

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

/* --------- overlays: scanlines + subtle noise --------- */
.scanlines {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(0, 255, 156, 0.025) 2px,
    rgba(0, 255, 156, 0.025) 3px
  );
  mix-blend-mode: overlay;
  opacity: .6;
}
.noise {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: .035;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* --------- nav --------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  padding: .9rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10, 10, 10, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
  z-index: 100;
}
.nav-brand {
  color: var(--fg);
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -.01em;
  display: inline-flex;
  align-items: center;
}
.nav-brand .prompt { color: var(--fg-dim); }
.nav-brand .nav-user { color: var(--accent); text-shadow: var(--glow); }
.nav-brand .cursor-mini {
  color: var(--accent);
  margin-left: 2px;
  animation: blink 1.1s steps(1) infinite;
}

.nav nav { display: flex; gap: 1.35rem; font-size: 13px; flex-wrap: wrap; }
.nav nav a {
  color: var(--fg-dim);
  text-decoration: none;
  transition: color .18s ease;
  position: relative;
}
.nav nav a:hover,
.nav nav a.active { color: var(--accent); }
.nav nav a.active::before {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px; background: var(--accent);
  box-shadow: var(--glow);
}

/* --------- main --------- */
main {
  max-width: 820px;
  margin: 0 auto;
  padding: 120px 2rem 4rem;
}

/* --------- hero / terminal --------- */
.hero { padding-bottom: 4rem; }

.terminal {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(17,18,20,.95), rgba(10,10,10,.95));
  box-shadow:
    0 0 0 1px rgba(0, 255, 156, 0.04),
    0 20px 50px -20px rgba(0, 255, 156, 0.15),
    0 10px 30px -10px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  transition: transform .3s ease, box-shadow .3s ease;
}
.terminal:hover {
  box-shadow:
    0 0 0 1px rgba(0, 255, 156, 0.12),
    0 30px 60px -20px rgba(0, 255, 156, 0.20),
    0 10px 30px -10px rgba(0, 0, 0, 0.7);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .75rem 1rem;
  background: #1a1b1e;
  border-bottom: 1px solid var(--border-soft);
  position: relative;
}
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot.red    { background: var(--danger); }
.dot.yellow { background: var(--warn); }
.dot.green  { background: #27c93f; }
.terminal-title {
  position: absolute;
  left: 50%; transform: translateX(-50%);
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: .02em;
}

.terminal-body { padding: 2rem 2rem 2.25rem; }
.line { color: var(--fg); margin: .15rem 0; font-size: .92rem; white-space: pre-wrap; word-break: break-word; }
.line.small { font-size: .82rem; margin-top: 1.25rem; }
.user    { color: var(--accent); }
.path    { color: var(--blue); }
.cmd     { color: var(--fg); }
.comment { color: var(--fg-mute); font-style: italic; }
.sep     { color: var(--fg-dim); }

.typed-line { min-height: 1.4em; }
.typed { color: var(--fg); }
.cursor {
  display: inline-block;
  color: var(--accent);
  animation: blink 1.1s steps(1) infinite;
  margin-left: 2px;
}
@keyframes blink { 50% { opacity: 0; } }

/* name row + aka */
.hero-name-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .75rem 1rem;
  margin: 1rem 0 .25rem;
}
.aka {
  font-size: clamp(1rem, 3.2vw, 1.5rem);
  font-weight: 400;
  letter-spacing: -.01em;
  line-height: 1.1;
  white-space: nowrap;
}
.aka-prefix { color: var(--fg-mute); font-style: italic; }
.aka-handle { color: var(--fg-dim); }
.aka-handle::selection { background: var(--accent); color: var(--bg); }

/* big glitchy name */
h1.glitch {
  font-size: clamp(3rem, 11vw, 6.25rem);
  color: var(--fg);
  margin: 0;
  font-weight: 700;
  letter-spacing: -.035em;
  line-height: 1;
  position: relative;
  display: inline-block;
  cursor: default;
  text-shadow: 0 0 24px rgba(0,255,156,.05);
}
h1.glitch::before,
h1.glitch::after {
  content: attr(data-text);
  position: absolute;
  left: 0; top: 0;
  width: 100%;
  opacity: 0;
  transition: opacity .15s ease;
  pointer-events: none;
}
h1.glitch:hover::before {
  opacity: .85;
  color: var(--accent);
  transform: translate(-2px, -1px);
  mix-blend-mode: screen;
  animation: glitch-1 .6s infinite steps(2);
}
h1.glitch:hover::after {
  opacity: .85;
  color: #ff3366;
  transform: translate(2px, 1px);
  mix-blend-mode: screen;
  animation: glitch-2 .6s infinite steps(2);
}
@keyframes glitch-1 {
  0%,100% { clip-path: inset(0 0 80% 0); transform: translate(-2px, -1px); }
  50%     { clip-path: inset(70% 0 10% 0); transform: translate(-3px, 1px); }
}
@keyframes glitch-2 {
  0%,100% { clip-path: inset(70% 0 0 0); transform: translate(2px, 1px); }
  50%     { clip-path: inset(0 0 80% 0); transform: translate(3px, -1px); }
}

.tagline {
  color: var(--accent) !important;
  margin: 0 0 1.5rem !important;
  font-style: italic;
  font-size: .95rem;
  text-shadow: var(--glow);
}

/* --------- sections --------- */
.section {
  padding: 3.5rem 0 1rem;
  border-top: 1px dashed var(--border-soft);
}
.section h2 {
  font-size: .95rem;
  color: var(--fg-dim);
  margin-bottom: 1.5rem;
  font-weight: 500;
  letter-spacing: .01em;
}
.section h2 .token {
  color: var(--accent);
  margin-right: .4rem;
  text-shadow: var(--glow);
}
.muted-hint {
  color: var(--fg-mute);
  margin-left: .5rem;
  font-weight: 400;
}
.muted-hint code {
  color: var(--accent);
  background: var(--accent-soft);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: .85em;
}

.card {
  border: 1px solid var(--border);
  padding: 1.5rem 1.6rem;
  border-radius: 8px;
  background: var(--accent-soft);
  position: relative;
}
.card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--accent);
  border-radius: 2px 0 0 2px;
  box-shadow: var(--glow);
}
.card p + p { margin-top: .75rem; }

/* --------- interactive shell --------- */
.shell-section .terminal { cursor: text; }
.shell-body {
  min-height: 260px;
  max-height: 460px;
  overflow-y: auto;
  padding: 1.25rem 1.4rem 1.25rem;
}
.shell-history .line { font-size: .9rem; }
.shell-history .err { color: var(--danger); }
.shell-history .ok  { color: var(--accent); }
.shell-history .head {
  color: var(--accent);
  font-weight: 600;
  margin-top: .25rem;
}
.shell-history .dim { color: var(--fg-dim); }
.shell-history .divider {
  color: var(--fg-mute);
  border-top: 1px dashed var(--border-soft);
  margin: .4rem 0;
  height: 1px;
  padding: 0;
}
.shell-input-line {
  display: flex;
  align-items: center;
  gap: .35rem;
  margin-top: .1rem;
  flex-wrap: wrap;
}
.shell-input {
  background: transparent;
  border: none;
  color: var(--fg);
  font: inherit;
  outline: none;
  padding: 0;
  caret-color: transparent;
  width: 1ch;
  min-width: 1ch;
  max-width: 100%;
}
.shell-input-line .cursor { margin-left: -.35rem; }

.shell-body::-webkit-scrollbar { width: 6px; }
.shell-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* --------- skills (flat) --------- */
.skills-flat {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: .75rem;
}
.skills-flat li {
  border: 1px solid var(--border-soft);
  padding: .95rem 1.1rem;
  border-radius: 6px;
  background: rgba(255,255,255,.01);
  font-size: .92rem;
  transition: border-color .2s ease, background .2s ease, transform .2s ease;
  display: flex;
  gap: .7rem;
  align-items: center;
}
.skills-flat li::before {
  content: "▸";
  color: var(--accent);
  text-shadow: var(--glow);
  flex-shrink: 0;
}
.skills-flat li:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateX(2px);
}

/* --------- certifications --------- */
.cert-list { list-style: none; }
.cert-list li {
  padding: .95rem 0;
  border-bottom: 1px dashed var(--border-soft);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  transition: padding-left .2s ease;
}
.cert-list li:last-child { border-bottom: none; }
.cert-list li:hover { padding-left: .5rem; }
.cert-name { color: var(--fg); font-weight: 600; }
.cert-sub  { color: var(--fg-dim); font-weight: 400; margin-left: .25rem; }
.cert-issuer { color: var(--fg-dim); font-size: .85rem; }

/* --------- empty state (blog) --------- */
.empty-card {
  border: 1px dashed var(--border-soft);
  border-radius: 8px;
  padding: 1.25rem 1.4rem;
  color: var(--fg-mute);
  font-style: italic;
  text-align: center;
  background: rgba(255,255,255,.01);
}

/* --------- projects / blog cards --------- */
.projects { display: grid; gap: 1rem; }
.project {
  display: block;
  padding: 1.3rem 1.4rem;
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all .22s ease;
  background: rgba(255,255,255,.01);
}
.project:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateX(4px);
}
.project-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: .4rem;
}
.project h3 {
  color: var(--accent);
  font-size: 1rem;
  font-weight: 600;
  text-shadow: var(--glow);
}
.project p { color: var(--fg); font-size: .9rem; }
.arrow {
  color: var(--fg-dim);
  font-size: 1.1rem;
  transition: transform .22s ease, color .22s ease;
}
.project:hover .arrow {
  color: var(--accent);
  transform: translate(3px, -3px);
}
.tags { margin-top: .85rem; display: flex; flex-wrap: wrap; gap: .4rem; }
.tags span {
  font-size: .72rem;
  padding: .15rem .55rem;
  border: 1px solid var(--border-soft);
  border-radius: 3px;
  color: var(--fg-dim);
  letter-spacing: .02em;
}

/* --------- timeline --------- */
.timeline { list-style: none; }
.timeline li {
  position: relative;
  padding: 0 0 1.75rem 1.5rem;
  border-left: 1px solid var(--border-soft);
}
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -5px; top: 6px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: var(--glow);
}
.timeline .time {
  color: var(--fg-dim);
  font-size: .78rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.timeline .time .dur {
  color: var(--accent);
  margin-left: .5rem;
  padding: 1px 8px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: .72rem;
  letter-spacing: .03em;
  text-transform: none;
}
.timeline .role {
  color: var(--accent);
  font-size: 1rem;
  font-weight: 600;
  margin: .2rem 0;
  text-shadow: var(--glow);
}
.timeline .place {
  color: var(--fg);
  font-size: .85rem;
  margin-bottom: .4rem;
}
.timeline p { color: var(--fg-dim); font-size: .88rem; }

/* --------- contact --------- */
.contact-list { list-style: none; margin-top: 1.25rem; }
.contact-list li {
  padding: .4rem 0;
  display: flex;
  gap: 1rem;
  align-items: baseline;
  flex-wrap: wrap;
}
.contact-list .key {
  color: var(--accent);
  min-width: 90px;
  display: inline-block;
  font-size: .88rem;
  text-shadow: var(--glow);
}
.contact-list .key::after { content: ":"; color: var(--fg-dim); }
.contact-list a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: color .18s ease, border-color .18s ease;
}
.contact-list a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* --------- footer --------- */
footer {
  max-width: 820px;
  margin: 0 auto;
  padding: 2.5rem 2rem 3rem;
  text-align: center;
  color: var(--fg-dim);
  font-size: .8rem;
  border-top: 1px dashed var(--border-soft);
  margin-top: 3rem;
}
footer .token { color: var(--accent); }
footer .muted { color: var(--fg-mute); margin-top: .4rem; font-size: .75rem; }
/* --------- fade-in on scroll --------- */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .7s ease, transform .7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------- scrollbar --------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* --------- reduced motion --------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------- responsive --------- */
@media (max-width: 720px) {
  main { padding: 130px 1.1rem 2rem; }
  .terminal-body { padding: 1.3rem 1.2rem 1.5rem; }
  .shell-body { padding: 1rem 1.1rem; }
  .terminal-title { display: none; }
  .section { padding-top: 2.75rem; }
  footer { padding: 2rem 1rem 2.5rem; }
}

@media (max-width: 560px) {
  .nav {
    flex-direction: column;
    gap: .6rem;
    align-items: flex-start;
    padding: .75rem 1rem;
  }
  .nav nav { flex-wrap: wrap; gap: .9rem; width: 100%; }
  main { padding-top: 150px; }
  h1.glitch { font-size: clamp(2.5rem, 13vw, 4.25rem); }
  .cert-list li { flex-direction: column; gap: .15rem; }
  .cert-list li:hover { padding-left: 0; }
  .contact-list li { flex-direction: column; gap: .15rem; }
  .contact-list .key { min-width: auto; }
}