/* ═══════════════════════════════════════════════════════
   CyberEscudo — Main Stylesheet
   Dark cybersecurity theme with cyan accents
═══════════════════════════════════════════════════════ */

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

:root {
  --bg:        #0a0e14;
  --bg-card:   rgba(255,255,255,0.03);
  --bg-card2:  rgba(255,255,255,0.02);
  --border:    rgba(255,255,255,0.08);
  --border2:   rgba(255,255,255,0.06);
  --cyan:      #00ffff;
  --cyan-dim:  rgba(0,255,255,0.7);
  --cyan-faint:rgba(0,255,255,0.08);
  --cyan-glow: rgba(0,255,255,0.1);
  --white:     #f5f5f5;
  --gray:      rgba(255,255,255,0.55);
  --gray-dark: rgba(255,255,255,0.30);
  --font:      'Inter', system-ui, sans-serif;
  --mono:      'JetBrains Mono', 'Fira Code', monospace;
  --radius:    0.75rem;
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }

/* ─── Scrollbar ─────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(0,255,255,0.15); border-radius: 3px; }

/* ─── Utilities ─────────────────────────────────────── */
.accent   { color: var(--cyan); }
.section-label {
  font-family: var(--mono);
  font-size: .75rem;
  color: var(--cyan);
  letter-spacing: .2em;
  text-transform: uppercase;
  display: block;
  margin-bottom: .75rem;
}

/* ─── Cyber grid (hero bg) ──────────────────────────── */
.cyber-grid {
  background-image:
    linear-gradient(rgba(0,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,255,.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ─── Cards ─────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-2px);
  border-color: rgba(0,255,255,.25);
  box-shadow: 0 0 20px var(--cyan-glow), 0 0 40px rgba(0,255,255,.04);
}
.card-icon {
  width: 2.5rem; height: 2.5rem;
  background: var(--cyan-faint);
  border-radius: .5rem;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.card h3   { color: var(--white); font-size: .95rem; font-weight: 600; margin-bottom: .5rem; }
.card p    { color: var(--gray); font-size: .85rem; line-height: 1.6; }

/* ─── Navbar ────────────────────────────────────────── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,14,20,.7);
  transition: background .3s, border-color .3s, backdrop-filter .3s;
}
.navbar.scrolled {
  background: rgba(10,14,20,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,255,255,.1);
}
.nav-inner {
  max-width: 72rem; margin: 0 auto;
  padding: 0 1.5rem;
  height: 4rem;
  display: flex; align-items: center; gap: 2rem;
}
.logo {
  display: flex; align-items: center; gap: .5rem;
  font-weight: 700; font-size: 1.1rem; white-space: nowrap;
  flex-shrink: 0;
}
.logo svg { flex-shrink: 0; }
.nav-links {
  display: flex; list-style: none; gap: 2rem; margin-left: auto;
}
.nav-links a {
  font-size: .875rem; color: var(--gray);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--white); }

/* Language toggle */
.lang-toggle {
  display: flex; align-items: center; gap: 2px;
  background: rgba(255,255,255,.08);
  border-radius: 9999px;
  padding: 3px;
}
.lang-btn {
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: .75rem; font-weight: 600;
  letter-spacing: .05em;
  cursor: pointer;
  transition: all .15s;
  color: rgba(255,255,255,.5);
}
.lang-btn:hover { color: rgba(255,255,255,.85); }
.lang-btn.active { background: var(--cyan); color: var(--bg); }

/* Burger */
.burger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 4px; margin-left: auto;
}
.burger span {
  display: block; width: 22px; height: 2px;
  background: var(--gray);
  border-radius: 2px;
  transition: all .2s;
}
.mobile-menu {
  display: none; flex-direction: column;
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem 1.5rem;
  gap: 1rem;
}
.mobile-menu a { font-size: .9rem; color: var(--gray); }
.mobile-menu a:hover { color: var(--white); }
.mobile-menu.open { display: flex; }

@media (max-width: 767px) {
  .nav-links { display: none; }
  .burger    { display: flex; }
  .nav-inner { gap: 1rem; }
}

/* ─── Hero ──────────────────────────────────────────── */
#hero {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  overflow: hidden; padding: 6rem 1rem 3rem;
}
.hero-glow {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 70% 60% at 50% 60%, rgba(0,255,255,.04), transparent 70%);
}
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 64rem; }

.terminal-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(0,0,0,.6);
  border: 1px solid rgba(0,255,255,.2);
  border-radius: 9999px;
  padding: .35rem 1rem;
  font-family: var(--mono); font-size: .875rem;
  color: rgba(255,255,255,.7);
  margin-bottom: 2rem;
}
.terminal-badge .prompt { color: var(--cyan); }

.hero-title {
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  font-weight: 900; line-height: 1.1;
  margin-bottom: 1.25rem;
}
.hero-highlight {
  color: var(--cyan);
  text-shadow: 0 0 30px rgba(0,255,255,.4);
}
.hero-subtitle {
  color: var(--gray); font-size: clamp(.95rem, 2vw, 1.1rem);
  max-width: 40rem; margin: 0 auto 1.25rem;
}
.hero-command {
  font-family: var(--mono); color: var(--cyan-dim); font-size: .875rem;
  margin-bottom: 2.5rem;
}
.hero-command::after { content: '_'; animation: blink 1s infinite; }
@keyframes blink { 0%,50% { opacity:1; } 51%,100% { opacity:0; } }

.hero-cta {
  display: inline-flex; align-items: center; gap: .5rem;
  color: var(--cyan); font-weight: 500;
  transition: color var(--transition);
  background: none; border: none; cursor: pointer; font-size: 1rem;
}
.hero-cta:hover { color: #99ffff; }
.hero-cta .arrow { display: inline-block; transition: transform var(--transition); }
.hero-cta:hover .arrow { transform: translateY(3px); }

/* ─── Sections ──────────────────────────────────────── */
.section { padding: 6rem 1rem; }
.section.alt { background: rgba(255,255,255,.015); }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 900; margin-bottom: .75rem; }
.section-header p  { color: var(--gray); max-width: 38rem; margin: 0 auto; font-size: .95rem; }
.section-inner { max-width: 72rem; margin: 0 auto; }

/* Projects grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

/* Manuals grid */
.manuals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.manual-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.manual-cat-header {
  display: flex; align-items: center; gap: .75rem; margin-bottom: 1.25rem;
}
.manual-cat-icon {
  width: 2rem; height: 2rem;
  background: var(--cyan-faint);
  border-radius: .4rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.manual-cat-header h3 { font-size: .875rem; font-weight: 600; color: var(--white); }
.manual-list { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.manual-list li { display: flex; align-items: flex-start; gap: .5rem; }
.manual-list .arrow-r { color: var(--cyan); font-size: .8rem; margin-top: 2px; flex-shrink: 0; }
.manual-list a {
  color: var(--gray); font-size: .85rem;
  transition: color var(--transition);
}
.manual-list a:hover { color: var(--white); }

/* ─── About section ─────────────────────────────────── */
.about-wrap { max-width: 38rem; margin: 0 auto; }
.profile-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem; margin-bottom: 1rem;
}
.profile-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.25rem; }
.profile-avatar {
  width: 3rem; height: 3rem; border-radius: 50%;
  background: rgba(0,255,255,.1);
  border: 1.5px solid rgba(0,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.profile-name { font-weight: 700; color: var(--white); }
.profile-role { font-size: .875rem; color: var(--gray); }
.profile-bio   { color: var(--gray); font-size: .875rem; line-height: 1.7; margin-bottom: .75rem; }
.contact-card  {
  background: var(--bg-card2); border: 1px solid var(--border2);
  border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1rem;
  display: flex; align-items: center; gap: .75rem;
}
.contact-icon  {
  width: 2rem; height: 2rem; background: rgba(0,255,255,.07);
  border-radius: .4rem; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.contact-label { font-size: .75rem; color: var(--gray-dark); margin-bottom: 2px; }
.contact-email { color: var(--cyan); font-size: .875rem; transition: color var(--transition); }
.contact-email:hover { color: #66ffff; }

/* Donate card */
.donate-card {
  background: var(--bg-card2); border: 1px solid var(--border2);
  border-radius: var(--radius); padding: 2rem 1.5rem;
  text-align: center;
}
.donate-card h3  { font-weight: 700; font-size: 1.1rem; margin-bottom: .5rem; }
.donate-subtitle { color: var(--gray); font-size: .875rem; max-width: 28rem; margin: 0 auto 1.5rem; line-height: 1.6; }
.donate-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  background: var(--cyan); color: var(--bg);
  font-weight: 600; padding: .75rem 1.5rem;
  border-radius: .5rem; border: none; cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  font-size: .95rem;
}
.donate-btn:hover {
  background: #00e5e5;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,255,255,.3);
}
.donate-note { color: rgba(255,255,255,.25); font-size: .75rem; margin-top: .75rem; }

/* ─── Footer ────────────────────────────────────────── */
footer {
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 2.5rem 1rem;
}
.footer-inner {
  max-width: 72rem; margin: 0 auto;
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 1rem;
}
.footer-tagline { color: var(--gray-dark); font-size: .8rem; max-width: 30rem; }
.footer-links { display: flex; align-items: center; gap: .75rem; font-size: .8rem; color: rgba(255,255,255,.25); }
.footer-links a { transition: color var(--transition); }
.footer-links a:hover { color: var(--gray); }
.footer-links .sep { opacity: .5; }
.footer-copy  { color: rgba(255,255,255,.18); font-size: .75rem; }

/* ─── Content page (for projects/manuals detail) ───── */
.content-page {
  max-width: 52rem; margin: 0 auto;
  padding: 8rem 1.5rem 5rem;
}
.content-page .back {
  display: inline-flex; align-items: center; gap: .5rem;
  color: var(--gray); font-size: .875rem;
  margin-bottom: 2rem;
  transition: color var(--transition);
}
.content-page .back:hover { color: var(--white); }
.content-page h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900; margin-bottom: 1rem;
}
.content-page .meta {
  display: flex; gap: 1rem; margin-bottom: 2rem;
  color: var(--gray); font-size: .8rem;
}
.content-page .tag {
  background: var(--cyan-faint);
  color: var(--cyan); padding: .2rem .6rem;
  border-radius: .25rem; font-size: .75rem;
  font-family: var(--mono);
}
.prose { color: rgba(255,255,255,.75); line-height: 1.8; }
.prose h2 { font-size: 1.4rem; font-weight: 700; color: var(--white); margin: 2.5rem 0 1rem; }
.prose h3 { font-size: 1.1rem; font-weight: 600; color: var(--white); margin: 2rem 0 .75rem; }
.prose p  { margin-bottom: 1rem; }
.prose ul, .prose ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.prose li { margin-bottom: .4rem; }
.prose code {
  font-family: var(--mono); font-size: .85em;
  background: rgba(0,255,255,.07);
  color: var(--cyan); padding: .1em .35em;
  border-radius: .25rem;
}
.prose pre {
  background: rgba(0,0,0,.5); border: 1px solid rgba(0,255,255,.12);
  border-radius: .5rem; padding: 1.25rem 1.5rem;
  overflow-x: auto; margin-bottom: 1.5rem;
}
.prose pre code { background: none; color: rgba(255,255,255,.85); padding: 0; }
.prose a { color: var(--cyan); }
.prose a:hover { text-decoration: underline; }