/* ============================================
   COINSIGNAL AI — GLOBAL DESIGN SYSTEM
   Built for Axiom.Trade
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=Space+Mono:ital,wght@0,400;0,700;1,400&family=DM+Sans:wght@300;400;500;600&display=swap');

:root {
  --bg-void:       #040608;
  --bg-deep:       #070b12;
  --bg-base:       #0b0f19;
  --bg-surface:    #0f1628;
  --bg-raised:     #141c35;
  --bg-hover:      #1a2440;

  --neon-blue:     #4da3ff;
  --neon-cyan:     #00d4ff;
  --neon-purple:   #a855f7;
  --neon-green:    #00ff88;
  --neon-red:      #ff4757;
  --neon-amber:    #ffa502;

  --blue-dim:      rgba(77,163,255,0.12);
  --blue-glow:     rgba(77,163,255,0.25);
  --purple-dim:    rgba(168,85,247,0.12);
  --green-dim:     rgba(0,255,136,0.12);

  --text-primary:  #f0f4ff;
  --text-secondary:#8899bb;
  --text-muted:    #4a5878;
  --text-accent:   #4da3ff;

  --border-subtle: rgba(77,163,255,0.15);
  --border-active: rgba(77,163,255,0.4);
  --border-glow:   rgba(77,163,255,0.6);

  --font-display:  'Syne', sans-serif;
  --font-mono:     'Space Mono', monospace;
  --font-body:     'DM Sans', sans-serif;

  --radius-sm:     6px;
  --radius-md:     12px;
  --radius-lg:     18px;
  --radius-xl:     24px;

  --shadow-glow:   0 0 40px rgba(77,163,255,0.15), 0 0 80px rgba(77,163,255,0.06);
  --shadow-card:   0 8px 32px rgba(0,0,0,0.4), 0 1px 0 rgba(77,163,255,0.1) inset;
  --shadow-deep:   0 24px 64px rgba(0,0,0,0.6);
}

*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── NOISE TEXTURE OVERLAY ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.5;
}

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg-void); }
::-webkit-scrollbar-thumb { background: var(--border-active); border-radius: 2px; }

/* ── SELECTION ── */
::selection { background: var(--blue-glow); color: var(--text-primary); }

/* ── TYPOGRAPHY ── */
h1, h2, h3, h4, h5 { font-family: var(--font-display); font-weight: 700; line-height: 1.15; }
.mono { font-family: var(--font-mono); }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(77,163,255,0.3); }
  50%       { box-shadow: 0 0 40px rgba(77,163,255,0.6), 0 0 80px rgba(77,163,255,0.2); }
}
@keyframes scanLine {
  0%   { transform: translateY(-100%); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(100vh); opacity: 0; }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
@keyframes rotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-8px); }
}
@keyframes gridPulse {
  0%, 100% { opacity: 0.03; }
  50%       { opacity: 0.07; }
}

/* ── NAVIGATION ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  padding: 16px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(4,6,8,0.85);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  animation: pulseGlow 3s ease-in-out infinite;
}

.nav-logo span { color: var(--neon-blue); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-links a {
  padding: 8px 16px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  letter-spacing: 0.3px;
}

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

.nav-cta {
  background: linear-gradient(135deg, var(--neon-blue), #2563eb) !important;
  color: white !important;
  font-weight: 600 !important;
  padding: 8px 20px !important;
  border-radius: 8px !important;
  transition: all 0.2s ease !important;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(77,163,255,0.4) !important;
  background: linear-gradient(135deg, #62b0ff, #3b82f6) !important;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.3px;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.btn:hover::after { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--neon-blue) 0%, #2563eb 100%);
  color: white;
  box-shadow: 0 4px 24px rgba(77,163,255,0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(77,163,255,0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-active);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: var(--blue-dim);
  border-color: var(--neon-blue);
  transform: translateY(-1px);
}

.btn-ghost {
  background: var(--bg-raised);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-active);
  background: var(--bg-hover);
}

/* ── BADGES ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-display);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-blue {
  background: var(--blue-dim);
  color: var(--neon-blue);
  border: 1px solid rgba(77,163,255,0.25);
}

.badge-purple {
  background: var(--purple-dim);
  color: var(--neon-purple);
  border: 1px solid rgba(168,85,247,0.25);
}

.badge-green {
  background: var(--green-dim);
  color: var(--neon-green);
  border: 1px solid rgba(0,255,136,0.25);
}

/* ── CARDS ── */
.glass-card {
  background: rgba(15,22,40,0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
}

.glass-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-card), 0 0 40px rgba(77,163,255,0.08);
  transform: translateY(-2px);
}

/* ── GRID BACKGROUND ── */
.grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(77,163,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,163,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridPulse 4s ease-in-out infinite;
}

/* ── SECTION ── */
.section {
  padding: 100px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--neon-blue);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
  line-height: 1.1;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 18px;
  max-width: 540px;
  line-height: 1.7;
}

/* ── DIVIDER ── */
.divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
  margin: 0 40px;
}

/* ── FOOTER ── */
footer {
  padding: 60px 40px 40px;
  border-top: 1px solid var(--border-subtle);
  position: relative;
}

.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 16px;
  max-width: 280px;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  padding: 4px 0;
  transition: color 0.2s;
}

.footer-col a:hover { color: var(--neon-blue); }

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 30px;
  border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 13px;
  font-family: var(--font-mono);
}

/* ── SIGNAL PILL ── */
.signal-buy   { color: var(--neon-green);  background: var(--green-dim); }
.signal-watch { color: var(--neon-amber);  background: rgba(255,165,2,0.12); }
.signal-avoid { color: var(--neon-red);    background: rgba(255,71,87,0.12); }

/* ── TOAST ── */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-raised);
  border: 1px solid var(--border-active);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  nav { padding: 14px 20px; }
  .nav-links { display: none; }
  .section { padding: 70px 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .divider { margin: 0 20px; }
}