/* ============================================
   NEXUS STUDIOS · STYLES ESPACES PROTÉGÉS
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Bruno+Ace+SC&family=Manrope:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

:root {
  --void: #070710;
  --void-light: #0F0F1F;
  --cyan: #00F0FF;
  --pulse: #FF2BD6;
  --signal: #C6FF3D;
  --ember: #FF8A3C;
  --fog: #8A8AAC;
  --ink: #E9E9FF;
  --danger: #FF3B5C;
}

html, body {
  background: var(--void); color: var(--ink);
  font-family: 'Manrope', sans-serif;
  font-size: 15px; line-height: 1.5; min-height: 100vh; overflow-x: hidden;
}

body::before {
  content: ''; position: fixed; inset: 0;
  background:
    radial-gradient(circle at 80% 0%, rgba(0,240,255,0.08) 0%, transparent 50%),
    radial-gradient(circle at 20% 100%, rgba(255,43,214,0.06) 0%, transparent 50%);
  pointer-events: none; z-index: 0;
}

a { color: inherit; text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 16px 24px; position: relative; z-index: 1; }

/* ============= NAV ============= */
.nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 0; border-bottom: 1px solid rgba(138,138,172,0.15);
  margin-bottom: 30px;
}
.nav-logo { font-family: 'Bruno Ace SC', sans-serif; font-size: 17px; letter-spacing: 0.5px; }
.nav-logo .bullet { color: var(--cyan); text-shadow: 0 0 12px var(--cyan); margin-right: 4px; }
.nav-actions { display: flex; gap: 12px; align-items: center; }
.nav-back, .nav-logout {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  color: var(--fog); letter-spacing: 0.08em; text-transform: uppercase;
  padding: 6px 12px; border: 1px solid rgba(138,138,172,0.3);
  border-radius: 4px; transition: all 0.15s; cursor: pointer; background: transparent;
}
.nav-back:hover { color: var(--cyan); border-color: var(--cyan); }
.nav-logout:hover { color: var(--danger); border-color: var(--danger); }

/* ============================================
   AUTH SCREEN
   ============================================ */
.auth-screen {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 24px;
}

.auth-card {
  background: rgba(15,15,31,0.7);
  border: 1px solid rgba(138,138,172,0.2);
  border-radius: 12px;
  padding: 40px 36px;
  max-width: 440px; width: 100%;
  backdrop-filter: blur(20px);
  position: relative; overflow: hidden;
}

.auth-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--cyan);
}
.auth-card.pulse::before { background: var(--pulse); }
.auth-card.signal::before { background: var(--signal); }

.auth-logo {
  text-align: center;
  font-family: 'Bruno Ace SC', sans-serif; font-size: 18px; letter-spacing: 0.5px;
  margin-bottom: 30px;
}
.auth-logo .bullet { color: var(--cyan); text-shadow: 0 0 12px var(--cyan); margin-right: 4px; }

.auth-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--cyan); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 12px; text-align: center;
}
.auth-card.pulse .auth-tag { color: var(--pulse); }
.auth-card.signal .auth-tag { color: var(--signal); }

.auth-title {
  font-family: 'Bruno Ace SC', sans-serif;
  font-size: 26px; line-height: 1; text-transform: uppercase;
  text-align: center; margin-bottom: 8px;
}
.auth-title .accent { color: var(--cyan); }
.auth-card.pulse .auth-title .accent { color: var(--pulse); }
.auth-card.signal .auth-title .accent { color: var(--signal); }

.auth-sub {
  text-align: center; font-size: 13px; color: var(--fog);
  margin-bottom: 28px; line-height: 1.5;
}

.auth-input-wrap { position: relative; margin-bottom: 14px; }
.auth-input {
  width: 100%; padding: 14px 18px;
  background: rgba(7,7,16,0.8);
  border: 1px solid rgba(138,138,172,0.3);
  border-radius: 6px;
  color: var(--ink); font-family: 'JetBrains Mono', monospace; font-size: 14px;
  letter-spacing: 0.1em; transition: all 0.15s;
}
.auth-input:focus {
  outline: none; border-color: var(--cyan);
  box-shadow: 0 0 16px rgba(0,240,255,0.2);
}
.auth-card.pulse .auth-input:focus { border-color: var(--pulse); box-shadow: 0 0 16px rgba(255,43,214,0.2); }
.auth-card.signal .auth-input:focus { border-color: var(--signal); box-shadow: 0 0 16px rgba(198,255,61,0.2); }

.auth-input.shake { animation: shake 0.3s; border-color: var(--danger) !important; }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.auth-btn {
  width: 100%; padding: 14px;
  background: var(--cyan); color: var(--void);
  border: none; border-radius: 6px;
  font-family: 'Bruno Ace SC', sans-serif; font-size: 14px;
  text-transform: uppercase; letter-spacing: 0.5px; cursor: pointer;
  transition: all 0.15s;
}
.auth-card.pulse .auth-btn { background: var(--pulse); color: var(--void); }
.auth-card.signal .auth-btn { background: var(--signal); color: var(--void); }

.auth-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,240,255,0.3); }
.auth-card.pulse .auth-btn:hover { box-shadow: 0 6px 20px rgba(255,43,214,0.3); }
.auth-card.signal .auth-btn:hover { box-shadow: 0 6px 20px rgba(198,255,61,0.3); }

.auth-error {
  display: none;
  padding: 10px 14px; margin-top: 10px;
  background: rgba(255,59,92,0.1);
  border: 1px solid var(--danger);
  border-radius: 4px;
  color: var(--danger); font-size: 12px;
  font-family: 'JetBrains Mono', monospace; letter-spacing: 0.05em;
}

.auth-footer {
  text-align: center; margin-top: 20px;
  font-family: 'JetBrains Mono', monospace; font-size: 9px;
  color: var(--fog); letter-spacing: 0.05em;
}
.auth-footer a:hover { color: var(--cyan); }

/* ============================================
   CONTENT (espace protégé)
   ============================================ */
#content { display: none; padding-bottom: 60px; }

.page-header {
  margin-bottom: 36px;
}
.page-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase;
  border: 1px solid var(--cyan); padding: 5px 12px; border-radius: 3px;
  margin-bottom: 14px; color: var(--cyan);
}
.page-tag.pulse { color: var(--pulse); border-color: var(--pulse); }
.page-tag.signal { color: var(--signal); border-color: var(--signal); }

.page-title {
  font-family: 'Bruno Ace SC', sans-serif;
  font-size: clamp(32px, 5vw, 48px); line-height: 1;
  text-transform: uppercase; margin-bottom: 12px;
}
.page-title .accent { color: var(--cyan); }
.page-title .pulse { color: var(--pulse); }
.page-title .signal { color: var(--signal); }

.page-sub { font-size: 16px; color: var(--fog); max-width: 700px; line-height: 1.5; }

/* ============================================
   SECTION TITLES
   ============================================ */
.section-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--cyan); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 6px;
}
.section-tag.pulse { color: var(--pulse); }
.section-tag.signal { color: var(--signal); }

.section-title {
  font-family: 'Bruno Ace SC', sans-serif;
  font-size: clamp(22px, 3vw, 28px); line-height: 1;
  text-transform: uppercase; margin-bottom: 20px;
}

.section { margin: 50px 0; }

/* ============================================
   DOWNLOAD CARDS
   ============================================ */
.downloads-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.dl-card {
  background: rgba(15,15,31,0.6);
  border: 1px solid rgba(138,138,172,0.2);
  border-radius: 8px;
  padding: 22px;
  display: flex; flex-direction: column;
  transition: all 0.2s;
  position: relative; overflow: hidden;
  border-left: 3px solid var(--fog);
}
.dl-card.cyan { border-left-color: var(--cyan); }
.dl-card.pulse { border-left-color: var(--pulse); }
.dl-card.signal { border-left-color: var(--signal); }
.dl-card.ember { border-left-color: var(--ember); }

.dl-card:hover { transform: translateY(-2px); border-color: var(--cyan); }
.dl-card.pulse:hover { border-color: var(--pulse); }
.dl-card.signal:hover { border-color: var(--signal); }
.dl-card.ember:hover { border-color: var(--ember); }

.dl-icon {
  font-family: 'JetBrains Mono', monospace; font-size: 9px;
  color: var(--fog); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 12px;
}
.dl-card.cyan .dl-icon { color: var(--cyan); }
.dl-card.pulse .dl-icon { color: var(--pulse); }
.dl-card.signal .dl-icon { color: var(--signal); }
.dl-card.ember .dl-icon { color: var(--ember); }

.dl-name {
  font-family: 'Bruno Ace SC', sans-serif; font-size: 14px;
  text-transform: uppercase; line-height: 1.2;
  margin-bottom: 6px; letter-spacing: 0.2px;
  color: var(--ink);
}

.dl-desc { font-size: 12px; color: var(--fog); line-height: 1.45; margin-bottom: 16px; flex: 1; }

.dl-meta {
  font-family: 'JetBrains Mono', monospace; font-size: 9px;
  color: var(--fog); letter-spacing: 0.05em; margin-bottom: 14px;
}

.dl-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 14px;
  background: rgba(7,7,16,0.6);
  border: 1px solid var(--cyan); color: var(--cyan);
  border-radius: 5px;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.08em;
  transition: all 0.15s;
}
.dl-card.pulse .dl-btn { border-color: var(--pulse); color: var(--pulse); }
.dl-card.signal .dl-btn { border-color: var(--signal); color: var(--signal); }
.dl-card.ember .dl-btn { border-color: var(--ember); color: var(--ember); }

.dl-btn:hover { background: var(--cyan); color: var(--void); }
.dl-card.pulse .dl-btn:hover { background: var(--pulse); color: var(--void); }
.dl-card.signal .dl-btn:hover { background: var(--signal); color: var(--void); }
.dl-card.ember .dl-btn:hover { background: var(--ember); color: var(--void); }

/* ============================================
   TOOLS / CALCULATEURS
   ============================================ */
.tools-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
}

.tool-card {
  background: rgba(15,15,31,0.6);
  border: 1px solid rgba(138,138,172,0.2);
  border-radius: 10px;
  padding: 26px;
  position: relative; overflow: hidden;
  transition: all 0.2s;
}
.tool-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--cyan);
}
.tool-card.pulse::before { background: var(--pulse); }
.tool-card.signal::before { background: var(--signal); }

.tool-card:hover { transform: translateY(-3px); }

.tool-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  color: var(--cyan); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 12px;
}
.tool-card.pulse .tool-tag { color: var(--pulse); }
.tool-card.signal .tool-tag { color: var(--signal); }

.tool-name {
  font-family: 'Bruno Ace SC', sans-serif; font-size: 22px;
  text-transform: uppercase; margin-bottom: 10px; letter-spacing: 0.3px;
}
.tool-card.cyan .tool-name { color: var(--cyan); }
.tool-card.pulse .tool-name { color: var(--pulse); }
.tool-card.signal .tool-name { color: var(--signal); }

.tool-desc { font-size: 14px; color: var(--ink); line-height: 1.5; margin-bottom: 18px; }

.tool-features {
  list-style: none; margin-bottom: 22px;
}
.tool-features li {
  font-size: 12px; color: var(--fog); padding: 4px 0; padding-left: 16px;
  position: relative;
}
.tool-features li::before {
  content: '→'; position: absolute; left: 0;
  color: var(--cyan); font-weight: bold;
}
.tool-card.pulse .tool-features li::before { color: var(--pulse); }
.tool-card.signal .tool-features li::before { color: var(--signal); }

.tool-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px;
  background: var(--cyan); color: var(--void);
  border-radius: 6px;
  font-family: 'Bruno Ace SC', sans-serif; font-size: 13px;
  text-transform: uppercase; letter-spacing: 0.5px;
  transition: all 0.15s;
}
.tool-card.pulse .tool-btn { background: var(--pulse); }
.tool-card.signal .tool-btn { background: var(--signal); }

.tool-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,240,255,0.3); }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  margin-top: 60px; padding: 24px 0;
  border-top: 1px solid rgba(138,138,172,0.15);
  text-align: center;
  font-family: 'JetBrains Mono', monospace; font-size: 10px;
  color: var(--fog); letter-spacing: 0.08em; text-transform: uppercase;
}

@media (max-width: 768px) {
  .nav-back, .nav-logout { font-size: 9px; padding: 5px 8px; }
}