/* SYNOPTIA - LIQUID GLASS DESIGN SYSTEM */
/* Version commune pour toutes les pages */

:root {
  --header-h: 70px;
  --bg: #0B1226;
  --text: #E6EDF7;
  --muted: #B6C7DA;
  --panel: rgba(255,255,255,.05);
  --panel-strong: rgba(8,14,32,.85);
  --border: rgba(255,255,255,.12);
  --primary-900: #0F1E6D;
  --primary-800: #1733A6;
  --primary-700: #2451FF;
  --accent-500: #22D3EE;
  --magenta: #E11D8D;
  --focus: rgba(34,211,238,.35);
  --gap: 22px;
  /* Métallique + lumière */
  --metal-shine: linear-gradient(135deg, rgba(255,255,255,.4) 0%, rgba(255,255,255,.05) 50%, rgba(255,255,255,.3) 100%);
  --glow-cyan: drop-shadow(0 0 10px rgba(34,211,238,.6)) drop-shadow(0 0 20px rgba(34,211,238,.4));
  --glow-blue: drop-shadow(0 0 10px rgba(36,81,255,.6)) drop-shadow(0 0 20px rgba(36,81,255,.4));
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  color-scheme: dark;
}

/* HALOS LIQUIDES ANIMÉS */
.halos {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.halo {
  position: absolute;
  filter: blur(28px);
  border-radius: 9999px;
  opacity: .3;
}

.halo.cyan {
  background: color-mix(in srgb, var(--accent-500) 12%, transparent);
  width: 1000px;
  height: 480px;
  left: 50%;
  top: -24px;
  transform: translateX(-50%);
  animation: float1 20s ease-in-out infinite;
}

.halo.blue {
  background: color-mix(in srgb, var(--primary-700) 8%, transparent);
  width: 900px;
  height: 420px;
  left: 5%;
  top: 80px;
  animation: float2 25s ease-in-out infinite;
}

.halo.magenta {
  background: color-mix(in srgb, var(--magenta) 6%, transparent);
  width: 720px;
  height: 380px;
  right: 8%;
  top: 120px;
  animation: float3 18s ease-in-out infinite;
}

@keyframes float1 {
  0%, 100% { transform: translateX(-50%) translateY(0) scale(1); border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
  25% { transform: translateX(-45%) translateY(-20px) scale(1.05); border-radius: 40% 60% 70% 30% / 40% 70% 30% 60%; }
  50% { transform: translateX(-55%) translateY(-10px) scale(0.95); border-radius: 70% 30% 50% 50% / 30% 60% 40% 70%; }
  75% { transform: translateX(-48%) translateY(-25px) scale(1.02); border-radius: 50% 50% 60% 40% / 70% 40% 60% 30%; }
}

@keyframes float2 {
  0%, 100% { transform: translateY(0) scale(1); border-radius: 50% 50% 40% 60% / 50% 60% 40% 50%; }
  33% { transform: translateY(30px) translateX(10px) scale(1.08); border-radius: 60% 40% 50% 50% / 40% 60% 50% 50%; }
  66% { transform: translateY(-15px) translateX(-15px) scale(0.92); border-radius: 40% 60% 60% 40% / 60% 40% 60% 40%; }
}

@keyframes float3 {
  0%, 100% { transform: translateY(0) scale(1); border-radius: 55% 45% 45% 55% / 55% 45% 55% 45%; }
  50% { transform: translateY(-40px) translateX(20px) scale(1.1); border-radius: 45% 55% 55% 45% / 45% 55% 45% 55%; }
}

/* HEADER GLASSMORPHISM */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  backdrop-filter: blur(20px) saturate(180%);
  background: linear-gradient(135deg, rgba(9,16,33,.75) 0%, rgba(15,30,109,.65) 100%);
  border-bottom: 1px solid rgba(255,255,255,.15);
  box-shadow: 0 8px 32px rgba(0,0,0,.2), inset 0 1px 0 rgba(255,255,255,.1);
}

/* CARDS LIQUID GLASS + METAL */
.card {
  padding: 26px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255,255,255,.08) 0%, rgba(255,255,255,.03) 100%);
  backdrop-filter: blur(10px) saturate(150%);
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: 0 8px 32px rgba(0,0,0,.15),
              0 4px 12px rgba(34,211,238,.1),
              inset 0 1px 0 rgba(255,255,255,.15),
              inset -1px -1px 2px rgba(0,0,0,.3);
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(34,211,238,.2) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
  pointer-events: none;
  border-radius: 20px;
}

.card::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.15), transparent);
  transform: skewX(-20deg);
  transition: left 0.7s ease;
  pointer-events: none;
  border-radius: 20px;
}

.card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 16px 40px rgba(36,81,255,.35),
              0 0 30px rgba(34,211,238,.25),
              0 4px 16px rgba(34,211,238,.15),
              inset 0 2px 0 rgba(255,255,255,.4),
              inset -2px -2px 4px rgba(0,0,0,.2);
  border-color: rgba(34,211,238,.7);
  background: linear-gradient(135deg, rgba(255,255,255,.15) 0%, rgba(34,211,238,.1) 100%);
  z-index: 10;
}

.card:hover::before {
  opacity: 1;
  transform: scale(1);
}

.card:hover::after {
  left: 150%;
}

/* PANEL GLASS */
.panel {
  background: linear-gradient(135deg, rgba(255,255,255,.06) 0%, rgba(255,255,255,.03) 100%);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 20px;
  box-shadow: 0 8px 24px rgba(0,0,0,.12), inset 0 1px 0 rgba(255,255,255,.1);
}

/* BOUTONS METAL + GLOW */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: .9rem 1.1rem;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
  line-height: 1;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-700) 100%);
  color: #fff;
  border: 2px solid rgba(255,255,255,.3);
  box-shadow: 0 8px 24px rgba(23,51,166,.5),
              0 0 30px rgba(36,81,255,.4),
              0 4px 12px rgba(34,211,238,.2),
              inset 0 2px 0 rgba(255,255,255,.3),
              inset 0 -2px 4px rgba(0,0,0,.3);
  position: relative;
  overflow: hidden;
  filter: drop-shadow(0 4px 16px rgba(36,81,255,.4));
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,211,238,.5) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.2) 0%, transparent 50%, rgba(255,255,255,.1) 100%);
  opacity: 0.3;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:hover {
  transform: translateY(-3px) scale(1.04);
  background: linear-gradient(135deg, var(--primary-700) 0%, var(--accent-500) 100%);
  box-shadow: 0 12px 35px rgba(36,81,255,.45),
              0 0 35px rgba(34,211,238,.3),
              0 6px 20px rgba(34,211,238,.2),
              inset 0 3px 0 rgba(255,255,255,.5),
              inset 0 -3px 6px rgba(0,0,0,.2);
  border-color: rgba(34,211,238,.7);
  filter: drop-shadow(0 6px 18px rgba(34,211,238,.4));
}

.btn.outline {
  background: linear-gradient(135deg, rgba(255,255,255,.08) 0%, rgba(255,255,255,.04) 100%);
  backdrop-filter: blur(10px);
  color: #FFFFFF;
  border: 2px solid rgba(255,255,255,.3);
  box-shadow: 0 4px 16px rgba(0,0,0,.15), inset 0 1px 0 rgba(255,255,255,.2);
}

.btn.outline:hover {
  background: linear-gradient(135deg, rgba(255,255,255,.15) 0%, rgba(34,211,238,.1) 100%);
  border-color: rgba(34,211,238,.5);
  box-shadow: 0 8px 24px rgba(34,211,238,.3), inset 0 1px 0 rgba(255,255,255,.3);
}

/* INPUTS GLASS */
.input {
  width: 100%;
  padding: 1rem 1.1rem;
  border-radius: 14px;
  border: 2px solid rgba(255,255,255,.15);
  background: linear-gradient(135deg, rgba(255,255,255,.06) 0%, rgba(255,255,255,.03) 100%);
  backdrop-filter: blur(8px);
  color: var(--text);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: 0 4px 12px rgba(0,0,0,.1), inset 0 1px 0 rgba(255,255,255,.08);
}

.input:focus {
  outline: none;
  border-color: rgba(34,211,238,.6);
  background: linear-gradient(135deg, rgba(255,255,255,.1) 0%, rgba(34,211,238,.05) 100%);
  box-shadow: 0 8px 24px rgba(34,211,238,.25), 0 0 20px rgba(34,211,238,.2), inset 0 1px 0 rgba(255,255,255,.15);
  transform: translateY(-2px);
}

/* TITRES AVEC GLOW ADOUCI */
h1 {
  filter: drop-shadow(0 2px 12px rgba(34,211,238,.25));
}

h2 {
  filter: drop-shadow(0 2px 6px rgba(34,211,238,.2));
}

h3 {
  filter: drop-shadow(0 1px 4px rgba(34,211,238,.15));
}