/* ============================================================
   RADITYO.DEV — DARK CYBER DESIGN SYSTEM
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=DM+Sans:wght@300;400;500&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── TOKENS ── */
:root {
  --bg:           #080c14;
  --bg2:          #0d1220;
  --bg3:          #111827;
  --card:         #0f1624;
  --card2:        #141d2e;
  --border:       #1e2d45;
  --border2:      #253550;

  --blue:         #3b82f6;
  --blue-dim:     #2563eb;
  --blue-bright:  #60a5fa;
  --purple:       #8b5cf6;
  --purple-dim:   #7c3aed;
  --cyan:         #06b6d4;
  --green:        #10b981;
  --yellow:       #f59e0b;
  --red:          #ef4444;

  --glow-blue:    rgba(59,130,246,0.15);
  --glow-purple:  rgba(139,92,246,0.15);
  --glow-cyan:    rgba(6,182,212,0.12);

  --text:         #e2e8f0;
  --text-dim:     #94a3b8;
  --text-muted:   #475569;

  --font-head:    'Plus Jakarta Sans', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --radius:       12px;
  --radius-sm:    8px;
  --radius-lg:    16px;
}

/* ── RESET ── */
*,*::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);
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  /* subtle grid */
  background-image:
    radial-gradient(ellipse 80% 60% at 20% -10%, rgba(59,130,246,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(139,92,246,0.06) 0%, transparent 60%),
    linear-gradient(rgba(30,45,69,0.25) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,45,69,0.25) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--blue); }

/* ── NAVBAR ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  padding: 0 32px;
  height: 60px;
  background: rgba(8,12,20,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
  letter-spacing: -0.02em;
}

.nav-logo .accent { color: var(--blue); }
.nav-logo .cursor {
  display: inline-block;
  width: 2px; height: 14px;
  background: var(--blue);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.2s ease;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--bg3);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 50%;
  transform: translateX(-50%);
  width: 16px; height: 2px;
  background: var(--blue);
  border-radius: 2px;
}

/* ── PAGE WRAPPER ── */
.page {
  padding-top: 60px;
  min-height: 100vh;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-wide {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── PAGE HEADER ── */
.page-header {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.page-header .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-header .eyebrow::before {
  content: '';
  width: 20px; height: 1px;
  background: var(--blue);
}

.page-header h1 {
  font-family: var(--font-head);
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 10px;
}

.page-header p {
  font-size: 15px;
  color: var(--text-dim);
  max-width: 520px;
}

/* ── SECTION LABEL ── */
.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 0 20px rgba(59,130,246,0.35);
}
.btn-primary:hover {
  background: var(--blue-bright);
  box-shadow: 0 0 28px rgba(59,130,246,0.5);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border2);
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--blue);
  background: var(--glow-blue);
}

.btn-purple {
  background: var(--purple);
  color: #fff;
  box-shadow: 0 0 20px rgba(139,92,246,0.35);
}
.btn-purple:hover {
  background: #a78bfa;
  box-shadow: 0 0 28px rgba(139,92,246,0.5);
  transform: translateY(-1px);
}

/* ── CARDS ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--purple));
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover {
  border-color: var(--border2);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 0 1px var(--border2);
}

.card:hover::before { opacity: 1; }

/* ── TAG / BADGE ── */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 99px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tag-blue   { background: rgba(59,130,246,0.15);  color: var(--blue-bright); border: 1px solid rgba(59,130,246,0.25); }
.tag-purple { background: rgba(139,92,246,0.15); color: #a78bfa;            border: 1px solid rgba(139,92,246,0.25); }
.tag-cyan   { background: rgba(6,182,212,0.12);  color: var(--cyan);        border: 1px solid rgba(6,182,212,0.2); }
.tag-green  { background: rgba(16,185,129,0.12); color: var(--green);       border: 1px solid rgba(16,185,129,0.2); }
.tag-yellow { background: rgba(245,158,11,0.12); color: var(--yellow);      border: 1px solid rgba(245,158,11,0.2); }

/* ── FORM ELEMENTS ── */
.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-group label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

input, textarea, select {
  background: var(--card2);
  border: 1px solid var(--border2);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: all 0.25s ease;
  width: 100%;
}

input::placeholder, textarea::placeholder { color: var(--text-muted); }

input:focus, textarea:focus, select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}

/* ── GLOW DIVIDER ── */
.glow-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue), var(--purple), transparent);
  opacity: 0.4;
  margin: 48px 0;
}

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ── STATUS DOT ── */
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  display: inline-block;
  box-shadow: 0 0 8px var(--green);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,100% { box-shadow: 0 0 8px var(--green); }
  50%      { box-shadow: 0 0 16px var(--green), 0 0 24px rgba(16,185,129,0.3); }
}

/* ── FOOTER ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  margin-top: 80px;
}

.footer span { color: var(--blue); }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .navbar { padding: 0 16px; }
  .nav-links a { font-size: 12px; padding: 6px 8px; }
  .container, .container-wide { padding: 0 16px; }
  .page-header { padding: 40px 0 28px; margin-bottom: 32px; }
}