/* =========================================================
   BYTE SOCIETY — design tokens
   Theme: code editor / terminal, dark, syntax-highlight accents
   ========================================================= */
:root {
  --bg: #0A0E14;
  --bg-elevated: #10151C;
  --bg-elevated-2: #141B24;
  --border: #1F2733;
  --border-soft: #18202B;

  --text: #C9D3DE;
  --text-muted: #7A8699;
  --text-bright: #EFF3F7;

  --accent-cyan: #56D4DD;
  --accent-green: #8CD675;
  --accent-purple: #C297EB;
  --accent-amber: #E8B75F;
  --accent-red: #E5707B;

  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius: 10px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent-cyan);
  color: #06110f;
  padding: 0.6rem 1rem;
  z-index: 2000;
  font-family: var(--font-mono);
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
}

h1, h2, h3, h4, .brand-bracket, .nav-link, .eyebrow, .btn-terminal, .btn-outline-terminal, .btn-terminal-sm {
  font-family: var(--font-mono);
}

code, .code-block, .terminal-body { font-family: var(--font-mono); }

/* Reusable bits */
.tab-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}
.dot-cyan   { background: var(--accent-cyan); }
.dot-green  { background: var(--accent-green); }
.dot-purple { background: var(--accent-purple); }
.dot-amber  { background: var(--accent-amber); }

.pulse { box-shadow: 0 0 0 0 rgba(140, 214, 117, 0.6); animation: pulse 2s infinite; }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(140, 214, 117, 0.55); }
  70%  { box-shadow: 0 0 0 7px rgba(140, 214, 117, 0); }
  100% { box-shadow: 0 0 0 0 rgba(140, 214, 117, 0); }
}

.eyebrow {
  color: var(--accent-green);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
}

.section-title {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-bright);
  font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2.25rem);
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.section-text { color: var(--text-muted); font-size: 1.02rem; }

.text-accent-cyan { color: var(--accent-cyan); }

.pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.28rem 0.65rem;
  border-radius: 100px;
  border: 1px solid transparent;
}
.pill-cyan   { color: var(--accent-cyan);   background: rgba(86, 212, 221, 0.1);  border-color: rgba(86, 212, 221, 0.3); }
.pill-green  { color: var(--accent-green);  background: rgba(140, 214, 117, 0.1); border-color: rgba(140, 214, 117, 0.3); }
.pill-purple { color: var(--accent-purple); background: rgba(194, 151, 235, 0.1); border-color: rgba(194, 151, 235, 0.3); }
.pill-amber  { color: var(--accent-amber);  background: rgba(232, 183, 95, 0.1);  border-color: rgba(232, 183, 95, 0.3); }

/* =========================================================
   NAVBAR
   ========================================================= */
#mainNav {
  background: rgba(10, 14, 20, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, background 0.25s ease;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}
#mainNav.scrolled {
  border-bottom-color: var(--border);
  background: rgba(10, 14, 20, 0.92);
}

.navbar-brand {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-bright) !important;
  font-size: 1.15rem;
}
.brand-bracket { color: var(--accent-purple); }

.navbar-nav .nav-link {
  color: var(--text-muted) !important;
  font-size: 0.88rem;
  padding: 0.5rem 0.9rem !important;
  border-radius: 6px;
  transition: color 0.2s ease, background 0.2s ease;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--text-bright) !important;
  background: var(--bg-elevated);
}

.navbar-toggler { border-color: var(--border); padding: 0.35rem 0.55rem; }
.navbar-toggler:focus { box-shadow: 0 0 0 0.2rem rgba(86, 212, 221, 0.25); }
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(201, 211, 222, 0.9)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.btn-terminal-sm {
  font-size: 0.8rem;
  font-weight: 600;
  color: #06110f;
  background: var(--accent-green);
  border: 1px solid var(--accent-green);
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  white-space: nowrap;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-terminal-sm:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(140, 214, 117, 0.25); color: #06110f; }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  padding: 9.5rem 0 5rem;
  background:
    radial-gradient(600px 300px at 85% -5%, rgba(194, 151, 235, 0.12), transparent),
    radial-gradient(500px 260px at 0% 10%, rgba(86, 212, 221, 0.08), transparent);
  border-bottom: 1px solid var(--border-soft);
}

.hero-title {
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--text-bright);
  font-size: clamp(2.1rem, 1.5rem + 2.6vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.hero-sub {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 42ch;
  margin-top: 1.1rem;
}

.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.7rem;
  color: var(--accent-cyan);
}
.stat-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Buttons */
.btn-terminal {
  font-weight: 600;
  color: #06110f;
  background: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
  border-radius: 8px;
  padding: 0.65rem 1.4rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn-terminal:hover, .btn-terminal:focus {
  background: #6bdde4;
  color: #06110f;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(86, 212, 221, 0.25);
}

.btn-outline-terminal {
  font-weight: 600;
  color: var(--text-bright);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 1.4rem;
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}
.btn-outline-terminal:hover, .btn-outline-terminal:focus {
  border-color: var(--accent-cyan);
  color: var(--text-bright);
  background: var(--bg-elevated);
  transform: translateY(-2px);
}

/* Terminal window (hero signature element) */
.terminal-window {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  max-width: 560px;
  margin-inline: auto;
}
.terminal-titlebar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.7rem 0.9rem;
  background: var(--bg-elevated-2);
  border-bottom: 1px solid var(--border);
}
.t-dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.t-red { background: #E5707B; }
.t-yellow { background: #E8B75F; }
.t-green { background: #8CD675; }
.terminal-title {
  margin-left: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.terminal-body {
  padding: 1.5rem 1.25rem;
  min-height: 190px;
  font-size: 0.95rem;
}
.terminal-body .line { margin-bottom: 0.6rem; color: var(--text); }
.terminal-body .prompt { color: var(--accent-green); margin-right: 0.5rem; }
.terminal-body .out { color: var(--accent-cyan); padding-left: 1.4rem; min-height: 1.4em; }
.cursor {
  display: inline-block;
  width: 8px; height: 1.05em;
  background: var(--accent-cyan);
  vertical-align: text-bottom;
  animation: blink 1s step-start infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* =========================================================
   SECTIONS (generic)
   ========================================================= */
.section { padding: 5.5rem 0; }
.section-alt { background: var(--bg-elevated); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }

/* About code card */
.code-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.code-card-header {
  padding: 0.75rem 1rem;
  background: var(--bg-elevated-2);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
}
.code-block {
  margin: 0;
  padding: 1.25rem 1.4rem;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text);
  white-space: pre;
  overflow-x: auto;
}
.tok-key  { color: var(--accent-cyan); }
.tok-str  { color: var(--accent-green); }
.tok-num  { color: var(--accent-amber); }
.tok-punc { color: var(--text-muted); }

/* =========================================================
   EVENT CARDS
   ========================================================= */
.event-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  height: 100%;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.event-card:hover { transform: translateY(-4px); border-color: rgba(86, 212, 221, 0.4); box-shadow: var(--shadow-card); }

.event-date {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 54px; height: 54px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 1rem;
  background: var(--bg-elevated-2);
}
.event-day { font-family: var(--font-mono); font-weight: 700; color: var(--text-bright); font-size: 1.15rem; line-height: 1; }
.event-month { font-family: var(--font-mono); color: var(--accent-amber); font-size: 0.65rem; letter-spacing: 0.05em; }

.event-title { color: var(--text-bright); font-size: 1.05rem; font-weight: 700; margin-bottom: 0.5rem; }
.event-text { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0.9rem; }
.event-meta { color: var(--text-muted); font-size: 0.78rem; font-family: var(--font-mono); margin-bottom: 0; }

/* =========================================================
   PROJECT CARDS
   ========================================================= */
.project-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  height: 100%;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.project-card:hover { transform: translateY(-4px); border-color: rgba(194, 151, 235, 0.4); box-shadow: var(--shadow-card); }

.project-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.project-icon { font-size: 1.6rem; }
.icon-cyan { color: var(--accent-cyan); }
.icon-green { color: var(--accent-green); }
.icon-purple { color: var(--accent-purple); }
.icon-amber { color: var(--accent-amber); }
.project-link { color: var(--text-muted); font-size: 1.2rem; transition: color 0.2s ease; }
.project-link:hover { color: var(--text-bright); }

.project-title { color: var(--text-bright); font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.project-text { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1.1rem; }

.tech-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.2rem 0.65rem;
}

/* =========================================================
   TEAM CARDS
   ========================================================= */
.team-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 1.25rem;
  height: 100%;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.team-card:hover { transform: translateY(-4px); border-color: rgba(86, 212, 221, 0.35); }

.avatar {
  width: 68px; height: 68px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  color: #06110f;
  margin: 0 auto 1rem;
}
.avatar-cyan { background: var(--accent-cyan); }
.avatar-purple { background: var(--accent-purple); }
.avatar-green { background: var(--accent-green); }
.avatar-amber { background: var(--accent-amber); }

.team-name { color: var(--text-bright); font-size: 1rem; font-weight: 700; margin-bottom: 0.15rem; }
.team-role { color: var(--accent-cyan); font-family: var(--font-mono); font-size: 0.78rem; margin-bottom: 0.3rem; }
.team-focus { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.9rem; }
.team-social a { color: var(--text-muted); margin: 0 0.4rem; font-size: 1.05rem; transition: color 0.2s ease; }
.team-social a:hover { color: var(--text-bright); }

/* =========================================================
   CONTACT
   ========================================================= */
.contact-list li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-muted);
  margin-bottom: 0.7rem;
  font-size: 0.95rem;
}
.contact-list i { color: var(--accent-cyan); }
.contact-list + div a { color: var(--text-muted); transition: color 0.2s ease; }
.contact-list + div a:hover { color: var(--accent-cyan); }

.contact-form .form-label {
  color: var(--accent-green);
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}
.contact-form .form-control,
.contact-form .form-select {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-bright);
  border-radius: 8px;
  padding: 0.65rem 0.9rem;
}
.contact-form .form-control::placeholder { color: var(--text-muted); opacity: 0.7; }
.contact-form .form-control:focus,
.contact-form .form-select:focus {
  background: var(--bg-elevated);
  color: var(--text-bright);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 0.2rem rgba(86, 212, 221, 0.15);
}
.contact-form .form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%237A8699' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
}
.contact-form .invalid-feedback { color: var(--accent-red); }
.contact-form .form-control.is-invalid,
.contact-form .form-select.is-invalid { border-color: var(--accent-red); }
.contact-form .form-control.is-valid,
.contact-form .form-select.is-valid { border-color: var(--accent-green); }

.form-success { color: var(--accent-green); font-size: 0.9rem; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  padding: 4rem 0 1.75rem;
}
.footer-text { color: var(--text-muted); font-size: 0.92rem; max-width: 32ch; }
.footer-heading {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-bright);
  margin-bottom: 0.9rem;
}
.footer-links li { margin-bottom: 0.55rem; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; text-decoration: none; transition: color 0.2s ease; }
.footer-links a:hover { color: var(--accent-cyan); }
.footer-rule { border-color: var(--border); margin: 2.5rem 0 1.25rem; }
.footer-copy { color: var(--text-muted); font-size: 0.82rem; }

.btn-back-top {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  border-radius: 100px;
  padding: 0.4rem 0.9rem;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.btn-back-top:hover { border-color: var(--accent-cyan); color: var(--text-bright); }

.site-footer .form-control {
  background: var(--bg-elevated-2);
  border: 1px solid var(--border);
  color: var(--text-bright);
}
.site-footer .form-control::placeholder { color: var(--text-muted); }

/* =========================================================
   RESPONSIVE ADJUSTMENTS
   ========================================================= */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem;
    margin-top: 0.75rem;
  }
  .hero { padding-top: 7.5rem; text-align: left; }
  .terminal-window { margin-top: 2rem; }
}

@media (max-width: 575.98px) {
  .hero-stats { gap: 1.75rem !important; }
  .section { padding: 4rem 0; }
}