/* ============================================================
   CYBER THEME — Shared stylesheet for sub-pages
   Matches the design tokens and components in index.html
   ============================================================ */

/* ── Design tokens ── */
:root {
  --clr-bg:        #020b18;
  --clr-bg2:       #040f1e;
  --clr-panel:     #071526;
  --clr-border:    #0d2d4a;
  --clr-cyan:      #00d4ff;
  --clr-cyan-dim:  #0096b7;
  --clr-cyan-glow: rgba(0,212,255,.18);
  --clr-teal:      #00ffb3;
  --clr-teal-dim:  rgba(0,255,179,.12);
  --clr-text:      #b8d4e8;
  --clr-text-dim:  #5a7a96;
  --clr-white:     #e8f4ff;
  --clr-danger:    #ff4d7d;
  --font-display:  'Orbitron', monospace;
  --font-mono:     'Fira Code', monospace;
  --font-body:     'Rajdhani', sans-serif;
  --nav-h:         60px;
  --radius:        6px;
  --glow-sm: 0 0 8px  var(--clr-cyan);
  --glow-md: 0 0 20px var(--clr-cyan);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-body);
  line-height: 1.65;
  overflow-x: hidden;
}

a { color: var(--clr-cyan); text-decoration: none; transition: color .2s; }
a:hover { color: var(--clr-teal); }

h1,h2,h3,h4 {
  font-family: var(--font-display);
  color: var(--clr-white);
  letter-spacing: .06em;
  line-height: 1.2;
}

img { display: block; max-width: 100%; }
ul  { list-style: none; }

/* ── Reveal animation ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ============================================================
   NAVIGATION
   ============================================================ */
nav#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  z-index: 100;
  background: rgba(2,11,24,.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 700;
  color: var(--clr-cyan);
  letter-spacing: .15em;
  text-decoration: none;
}
.nav-logo span { color: var(--clr-white); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--clr-text-dim);
  letter-spacing: .08em;
  transition: color .2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--clr-cyan); }

.nav-cta {
  font-family: var(--font-mono);
  font-size: .73rem;
  padding: .35rem .9rem;
  border: 1px solid var(--clr-cyan);
  border-radius: var(--radius);
  color: var(--clr-cyan) !important;
  transition: background .2s, box-shadow .2s !important;
}
.nav-cta:hover {
  background: var(--clr-cyan-glow);
  box-shadow: var(--glow-sm);
}

/* More ▾ dropdown */
.nav-more {
  position: relative;
}
.nav-more-toggle {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--clr-text-dim);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  letter-spacing: .08em;
  transition: color .2s;
  display: flex;
  align-items: center;
  gap: .3rem;
}
.nav-more-toggle:hover { color: var(--clr-cyan); }
.nav-more-toggle i { font-size: .55rem; transition: transform .2s; }
.nav-more.open .nav-more-toggle i { transform: rotate(180deg); }

.nav-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + .8rem);
  right: 0;
  background: rgba(2,11,24,.97);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: .5rem 0;
  min-width: 160px;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
  z-index: 200;
}
.nav-more.open .nav-dropdown { display: block; }

.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .55rem 1rem;
  font-family: var(--font-mono);
  font-size: .73rem;
  color: var(--clr-text-dim);
  transition: color .2s, background .2s;
}
.nav-dropdown a i { color: var(--clr-cyan); width: 14px; text-align: center; }
.nav-dropdown a:hover { color: var(--clr-cyan); background: var(--clr-cyan-glow); }
.nav-dropdown a.active { color: var(--clr-cyan); }

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--clr-cyan);
  border-radius: 2px;
  transition: .3s;
}

/* ── Mobile menu ── */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(2,11,24,.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
  padding: 1.5rem 2rem;
  z-index: 99;
  flex-direction: column;
  gap: 1rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--clr-text-dim);
}
.mobile-menu a:hover { color: var(--clr-cyan); }
.mobile-divider {
  height: 1px;
  background: var(--clr-border);
  margin: .4rem 0;
}

/* ============================================================
   PAGE LAYOUT
   ============================================================ */
.page-wrap {
  padding-top: var(--nav-h);
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* Page hero / banner */
.page-hero {
  padding: 4rem 2rem 3rem;
  max-width: 1100px;
  margin: 0 auto;
  border-bottom: 1px solid var(--clr-border);
}
.page-hero .section-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--clr-cyan);
  letter-spacing: .25em;
  text-transform: uppercase;
  margin-bottom: .5rem;
}
.page-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  margin-bottom: .8rem;
  position: relative;
  display: inline-block;
}
.page-hero h1::after {
  content: '';
  position: absolute;
  bottom: -8px; left: 0;
  width: 40%;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-cyan), transparent);
}
.page-hero p {
  color: var(--clr-text-dim);
  font-size: .95rem;
  max-width: 600px;
  margin-top: 1rem;
  font-family: var(--font-mono);
}

.content-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
}

/* ── Section helpers ── */
.section-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--clr-cyan);
  letter-spacing: .25em;
  text-transform: uppercase;
  margin-bottom: .4rem;
}
.section-title {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  margin-bottom: 2rem;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px; left: 0;
  width: 40%;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-cyan), transparent);
}

/* ── Tags ── */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .68rem;
  padding: .18rem .5rem;
  border-radius: 3px;
  border: 1px solid var(--clr-cyan-dim);
  color: var(--clr-cyan);
  background: var(--clr-cyan-glow);
  letter-spacing: .05em;
}
.tag.teal {
  border-color: rgba(0,255,179,.3);
  color: var(--clr-teal);
  background: var(--clr-teal-dim);
}

/* ── Buttons ── */
.btn {
  font-family: var(--font-mono);
  font-size: .78rem;
  padding: .6rem 1.4rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: .25s;
  letter-spacing: .08em;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}
.btn-outline {
  border: 1px solid var(--clr-cyan);
  color: var(--clr-cyan);
  background: transparent;
}
.btn-outline:hover {
  background: var(--clr-cyan-glow);
  box-shadow: var(--glow-sm);
  color: var(--clr-cyan);
}

/* ── Terminal component ── */
.terminal {
  background: #020e1c;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  font-family: var(--font-mono);
}
.terminal-topbar {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1rem;
  background: #041223;
  border-bottom: 1px solid var(--clr-border);
}
.tb-dot { width: 10px; height: 10px; border-radius: 50%; }
.tb-dot.r { background: #ff5f57; }
.tb-dot.y { background: #febc2e; }
.tb-dot.g { background: #28c840; }
.terminal-topbar span {
  margin-left: .4rem;
  font-size: .68rem;
  color: var(--clr-text-dim);
}
.terminal-body {
  padding: 1.2rem 1.4rem 1.6rem;
  font-size: .8rem;
  line-height: 1.85;
}
.t-prompt { color: var(--clr-teal); }
.t-cmd    { color: var(--clr-white); }
.t-out    { color: var(--clr-text); padding-left: 1rem; margin-bottom: .8rem; }
.t-key    { color: var(--clr-cyan-dim); }
.t-val    { color: var(--clr-white); }
.t-dim    { color: var(--clr-text-dim); }

/* ── Panel card ── */
.panel {
  background: var(--clr-panel);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  transition: border-color .3s;
}
.panel:hover { border-color: var(--clr-cyan-dim); }
.panel-top-accent::before {
  content: '';
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-cyan), transparent);
  margin: -1.4rem -1.6rem 1.2rem;
  border-radius: var(--radius) var(--radius) 0 0;
}

/* ============================================================
   LINK LIST — used in blogs.html
   ============================================================ */
.link-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin-bottom: 2rem;
}
.link-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: .9rem 1.1rem;
  background: var(--clr-panel);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  transition: border-color .25s, transform .2s;
}
.link-item:hover {
  border-color: var(--clr-cyan-dim);
  transform: translateX(4px);
}
.link-item-icon {
  color: var(--clr-cyan);
  font-size: .9rem;
  margin-top: .1rem;
  flex-shrink: 0;
}
.link-item-body { flex: 1; min-width: 0; }
.link-item-body a {
  font-family: var(--font-body);
  font-size: .92rem;
  color: var(--clr-text);
  display: block;
  transition: color .2s;
}
.link-item-body a:hover { color: var(--clr-cyan); }
.link-item-source {
  font-family: var(--font-mono);
  font-size: .65rem;
  color: var(--clr-text-dim);
  margin-top: .15rem;
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Reading category header ── */
.cat-header {
  display: flex;
  align-items: center;
  gap: .8rem;
  margin: 2.5rem 0 1rem;
}
.cat-header-line {
  flex: 1;
  height: 1px;
  background: var(--clr-border);
}
.cat-header-label {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--clr-cyan);
  letter-spacing: .15em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* ============================================================
   ACCORDION — used in bookmarks.html
   ============================================================ */
.acc-block {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: .8rem;
  transition: border-color .3s;
}
.acc-block:focus-within,
.acc-block:has(.acc-toggle:checked) { border-color: var(--clr-cyan-dim); }

.acc-toggle { display: none; }

.acc-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1.2rem;
  cursor: pointer;
  background: var(--clr-panel);
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--clr-text);
  user-select: none;
  transition: color .2s, background .2s;
  gap: 1rem;
}
.acc-label:hover { color: var(--clr-cyan); }
.acc-label .acc-icon { color: var(--clr-cyan); font-size: .85rem; }
.acc-label .acc-chevron {
  font-size: .6rem;
  color: var(--clr-text-dim);
  transition: transform .3s;
  margin-left: auto;
  flex-shrink: 0;
}
.acc-toggle:checked + .acc-label { color: var(--clr-cyan); background: var(--clr-bg2); }
.acc-toggle:checked + .acc-label .acc-chevron { transform: rotate(180deg); }

.acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .3s ease;
  padding: 0 1.2rem;
  background: var(--clr-bg2);
}
.acc-toggle:checked ~ .acc-body {
  max-height: 2000px;
  padding: 1rem 1.2rem 1.4rem;
}

/* Nested accordion (sub-category) */
.acc-nested {
  margin-top: .6rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.acc-nested .acc-label {
  font-size: .73rem;
  padding: .65rem 1rem;
  background: var(--clr-bg);
  color: var(--clr-text-dim);
}
.acc-nested .acc-body {
  background: var(--clr-bg);
  padding: 0 1rem;
}
.acc-nested .acc-toggle:checked ~ .acc-body {
  padding: .8rem 1rem 1rem;
}

/* Links inside accordions */
.acc-links { display: flex; flex-direction: column; gap: .3rem; }
.acc-links li a {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  padding: .45rem .5rem;
  border-radius: 3px;
  font-size: .82rem;
  color: var(--clr-text);
  transition: color .2s, background .2s;
}
.acc-links li a::before {
  content: '▸';
  color: var(--clr-cyan);
  font-size: .6rem;
  margin-top: .25rem;
  flex-shrink: 0;
}
.acc-links li a:hover {
  color: var(--clr-cyan);
  background: var(--clr-cyan-glow);
  border-radius: var(--radius);
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2.5rem 2rem;
  border-top: 1px solid var(--clr-border);
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--clr-text-dim);
}
footer span { color: var(--clr-cyan); }
footer a { color: var(--clr-text-dim); }
footer a:hover { color: var(--clr-cyan); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .nav-links  { display: none; }
  .hamburger  { display: flex; }
  .page-hero  { padding: 3rem 1.2rem 2rem; }
  .content-wrap { padding: 2rem 1.2rem 4rem; }
}