/* Sonar Engine Design System */
html { scroll-behavior: smooth; background: #0a0520; }
body {
  margin: 0;
  color: #F8FAFC;
  font-family: 'Inter', system-ui, sans-serif;
  background: linear-gradient(180deg,
    #0a0520 0%, #0d0830 8%, #061db6 28%, #1046e9 42%,
    #061db6 55%, #070b6b 65%, #13023a 78%, #0f071d 90%, #0f071d 100%
  );
  background-attachment: fixed;
}
.font-mono { font-family: 'JetBrains Mono', monospace; }

/* Nav */
.glass-nav { background: transparent; transition: all 0.45s cubic-bezier(.6,.6,0,1); }
.glass-nav.scrolled {
  background: rgba(10,5,32,0.85);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.nav-link { color: rgba(255,255,255,0.6); transition: color 0.45s cubic-bezier(.6,.6,0,1); }
.nav-link:hover { color: white; }
.nav-logo { color: white; }
.nav-logo-icon { color: #428DF7; }
.btn-nav {
  background: #0036ff; color: white; padding: 8px 16px; border-radius: 8px;
  font-size: 14px; font-weight: 500; transition: all 0.45s cubic-bezier(.6,.6,0,1);
  box-shadow: 0 4px 12px rgba(0,54,255,0.3);
}
.btn-nav:hover { background: #0030dd; box-shadow: 0 6px 20px rgba(0,54,255,0.4); }

/* Glass card */
.glass-card {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(255,255,255,0.04) inset, 0 0.5px 0.5px rgba(255,255,255,0.08) inset,
    0 8px 24px -4px rgba(9,1,20,0.15), 0 3px 3px -1.5px rgba(9,1,20,0.08);
  transition: transform 0.45s cubic-bezier(.6,.6,0,1), box-shadow 0.45s cubic-bezier(.6,.6,0,1), background 0.45s cubic-bezier(.6,.6,0,1);
}
.glass-card:hover {
  transform: translateY(-4px); background: rgba(255,255,255,0.1);
  box-shadow: 0 1px 3px rgba(255,255,255,0.08) inset, 0 0.5px 0.5px rgba(255,255,255,0.12) inset,
    0 20px 60px -8px rgba(9,1,20,0.25), 0 8px 16px -4px rgba(9,1,20,0.15);
}

/* Buttons */
.btn-primary {
  background: #0036ff; color: white; padding: 12px 24px; border-radius: 8px;
  font-size: 14px; font-weight: 500; transition: all 0.45s cubic-bezier(.6,.6,0,1);
  box-shadow: 0 1px 2px -.5px rgba(255,255,255,0.12) inset, 0 .5px .5px rgba(255,255,255,0.16) inset,
    0 8px 24px -4px rgba(0,54,255,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 1px 2px -.5px rgba(255,255,255,0.2) inset, 0 .5px .5px rgba(255,255,255,0.24) inset,
    0 16px 40px -4px rgba(0,54,255,0.5);
}
.btn-ghost {
  background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.8); padding: 12px 24px;
  border-radius: 8px; font-size: 14px; font-weight: 500; border: 1px solid rgba(255,255,255,0.12);
  transition: all 0.45s cubic-bezier(.6,.6,0,1);
}
.btn-ghost:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.2); color: white; }
.btn-white {
  background: rgba(255,255,255,0.92); color: #0f071d; padding: 12px 24px; border-radius: 8px;
  font-size: 14px; font-weight: 600; transition: all 0.45s cubic-bezier(.6,.6,0,1);
  box-shadow: 0 8px 24px -4px rgba(0,0,0,0.2);
}
.btn-white:hover { background: white; transform: translateY(-2px); box-shadow: 0 16px 40px -4px rgba(0,0,0,0.25); }

/* Accent & Labels */
.accent { color: #428DF7; }
.label-sm { font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 600; }

/* Typography */
h1 { letter-spacing: -1.1px; }
h2 { letter-spacing: -0.96px; }
h3 { letter-spacing: -0.5px; }

/* Section */
.section-divide { border-top: 1px solid rgba(255,255,255,0.06); }

/* Icon box */
.icon-box {
  width: 40px; height: 40px; background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
}

/* Glow */
.glow-text { text-shadow: 0 0 60px rgba(66,141,247,0.4), 0 0 120px rgba(66,141,247,0.15); }

/* Reveal animations */
.reveal {
  opacity: 0; transform: translateY(40px) scale(0.97);
  transition: opacity 0.8s cubic-bezier(.6,.6,0,1), transform 0.8s cubic-bezier(.6,.6,0,1);
}
.reveal.visible { opacity: 1; transform: translateY(0) scale(1); }
.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }

/* Radar */
.radar-container {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 900px; height: 900px; pointer-events: none; opacity: 0.35;
}
@media (max-width: 768px) { .radar-container { width: 500px; height: 500px; } }
.radar-ring { fill: none; stroke: rgba(66,141,247,0.5); stroke-width: 1; }
.radar-sweep { transform-origin: center; animation: radarSweep 5s linear infinite; }
@keyframes radarSweep { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.radar-ping { fill: #428DF7; opacity: 0; animation: radarPing 4s ease-out infinite; }
.radar-ping:nth-child(2) { animation-delay: 1.3s; }
.radar-ping:nth-child(3) { animation-delay: 2.8s; }
@keyframes radarPing { 0% { opacity:0; r:3; } 10% { opacity:0.9; } 50% { opacity:0.5; r:7; } 100% { opacity:0; r:3; } }

/* Dropdown */
.dropdown-menu {
  background: rgba(10,5,32,0.95); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.08); box-shadow: 0 12px 40px -8px rgba(0,0,0,0.5);
}

/* Glow orbs */
.glow-orb {
  position: absolute; border-radius: 50%; filter: blur(80px); pointer-events: none;
  animation: orbFloat 8s ease-in-out infinite;
}
.glow-orb-1 { width:400px; height:400px; background:rgba(0,54,255,0.15); top:20%; left:-10%; }
.glow-orb-2 { width:300px; height:300px; background:rgba(66,141,247,0.1); top:60%; right:-8%; animation-delay:-4s; }
.glow-orb-3 { width:350px; height:350px; background:rgba(16,70,233,0.12); bottom:15%; left:20%; animation-delay:-2s; }
@keyframes orbFloat {
  0%,100% { transform:translate(0,0) scale(1); }
  25% { transform:translate(20px,-30px) scale(1.05); }
  50% { transform:translate(-15px,15px) scale(0.95); }
  75% { transform:translate(10px,20px) scale(1.02); }
}

/* Table */
.glass-table { border: 1px solid rgba(255,255,255,0.06); border-radius: 14px; overflow: hidden; }
.glass-table th { border-bottom: 1px solid rgba(255,255,255,0.06); }
.glass-table td { border-color: rgba(255,255,255,0.04); }
.table-row:hover { background-color: rgba(255,255,255,0.02); }

/* Callout box */
.callout-box {
  border: 1px solid rgba(0,54,255,0.2); border-radius: 14px;
  background: rgba(0,54,255,0.05); backdrop-filter: blur(8px);
}

/* FAQ specific */
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease; }
.faq-answer.open { max-height: 600px; padding-top: 12px; padding-bottom: 4px; }
.faq-chevron { transition: transform 0.2s ease; }
.faq-chevron.open { transform: rotate(180deg); }

.mobile-menu { display: none; }
.mobile-menu.open { display: flex; }
.hero-zone { position: relative; }

/* ========== Modal ========== */
.modal-overlay {
  position: absolute; top: 0; left: 0; width: 100%; z-index: 9999;
  background: rgba(0,0,0,0.7);
  display: none; align-items: center; justify-content: center;
  padding: 24px;
}
.modal-overlay.open { display: flex; }
.modal-panel {
  background: #0f071d; border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  box-shadow: 0 24px 80px -12px rgba(0,0,0,0.6);
  width: 100%; max-width: 520px; max-height: calc(100vh - 48px); overflow-y: auto;
  padding: 40px 32px 32px;
}
.modal-close {
  position: absolute; top: 16px; right: 16px;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px; width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.5); cursor: pointer;
  transition: all 0.2s ease;
}
.modal-close:hover { background: rgba(255,255,255,0.12); color: white; }

/* ========== Form fields ========== */
.form-label {
  display: block; font-size: 13px; font-weight: 500;
  color: rgba(255,255,255,0.7); margin-bottom: 6px;
}
.form-label .form-required { color: #428DF7; margin-left: 2px; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 10px 14px; border-radius: 8px; font-size: 14px;
  color: #F8FAFC; font-family: 'Inter', system-ui, sans-serif;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: rgba(66,141,247,0.5);
  box-shadow: 0 0 0 3px rgba(66,141,247,0.1);
}
.form-input::placeholder, .form-textarea::placeholder {
  color: rgba(255,255,255,0.25);
}
.form-select { appearance: none; cursor: pointer; }
.form-select option { color: #1a1a2e; background: #fff; }
.form-textarea { resize: vertical; min-height: 100px; }
.form-group { margin-bottom: 20px; }
.form-error-msg {
  background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3);
  color: #fca5a5; border-radius: 8px; padding: 10px 14px;
  font-size: 13px; margin-bottom: 16px; display: none;
}
.form-success {
  text-align: center; padding: 24px 0;
}