/* ==============================================================================
   DEEPBRIEF.FR — INSTITUTIONAL INTELLIGENCE DESIGN SYSTEM (PALANTIR / LINEAR GRADE)
   Zero cheap AI templates. Zero amateur gradients. Pure high-stakes intelligence aesthetic.
   Palette: #060709 (Void Obsidian) | #0C0D12 (Carbon Surface) | #14161F (Card Elevated)
============================================================================== */

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

:root {
  --bg-obsidian: #060709;
  --bg-surface: #0C0D12;
  --bg-card: #12141C;
  --bg-card-hover: #181B26;
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-focus: rgba(59, 130, 246, 0.5);
  --cobalt-core: #2563EB;
  --cobalt-bright: #3B82F6;
  --cobalt-glow: rgba(37, 99, 235, 0.18);
  --emerald-accent: #10B981;
  --amber-accent: #F59E0B;
  --text-pure: #FFFFFF;
  --text-primary: #F1F3F9;
  --text-secondary: #8E92A4;
  --text-muted: #55596D;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* Reset & Institutional Base */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-obsidian);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-obsidian);
  color: var(--text-primary);
  overflow-x: hidden;
  position: relative;
  letter-spacing: -0.01em;
}

/* Texture de grain militaire / filmique ultra-fine (0.018 opacité) */
.grain-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.02;
  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)'/%3E%3C/svg%3E");
}

/* Subtle Grid Background Lines */
.grid-bg-pattern {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
}

/* Halo sombre Palantir en haut de page */
.hero-vignette {
  background: radial-gradient(circle at 50% -10%, rgba(37, 99, 235, 0.12) 0%, rgba(6, 7, 9, 0) 65%);
}

/* Typographie d'autorité */
.font-mono-tech {
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.tracking-institutional {
  letter-spacing: -0.04em;
}

.title-hero {
  font-size: clamp(2.5rem, 5.5vw, 4.75rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

/* Cartes Institutionnelles Ultra-Mattées */
.intel-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 0.875rem;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.intel-card:hover {
  border-color: var(--border-medium);
  background-color: var(--bg-card-hover);
  box-shadow: 0 12px 36px -8px rgba(0, 0, 0, 0.5);
  transform: translateY(-2px);
}

.intel-card-active {
  border-color: var(--cobalt-bright);
  box-shadow: 0 0 25px -4px var(--cobalt-glow);
}

/* Badge de Classification Confidentielle */
.classification-stamp {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 0.25rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
}

/* Pastille Statut Radar */
.radar-pulse {
  position: relative;
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--emerald-accent);
}

.radar-pulse::after {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid var(--emerald-accent);
  animation: radarWave 2.4s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

@keyframes radarWave {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}

/* Jauge de Risque Circulaire SVG */
.risk-gauge-circle {
  transition: stroke-dashoffset 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Lecteur Audio Exécutif Minimaliste */
.audio-bar {
  width: 3px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 1px;
  transition: all 0.2s ease;
}

.audio-bar.active {
  background-color: var(--cobalt-bright);
}

.audio-bar.playing {
  animation: audioPulse 1.2s infinite ease-in-out alternate;
}

@keyframes audioPulse {
  0% { transform: scaleY(0.4); }
  100% { transform: scaleY(1.3); }
}

/* Onglets du Dossier Déclassifié */
.dossier-tab-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  padding: 0.5rem 0.85rem;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.dossier-tab-btn.active {
  color: #FFFFFF;
  border-bottom-color: var(--cobalt-bright);
  background: rgba(255, 255, 255, 0.02);
}

/* Scroll reveal doux */
.fade-in-entry {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-entry.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Curseur clignotant console */
.cmd-cursor {
  display: inline-block;
  width: 6px;
  height: 14px;
  background-color: var(--cobalt-bright);
  vertical-align: middle;
  animation: blinkCursor 0.9s infinite steps(2, start);
}

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

/* Barre de défilement custom */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: var(--bg-obsidian);
}
::-webkit-scrollbar-thumb {
  background: #202330;
  border-radius: 2px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--cobalt-bright);
}