/* ==========================================================================
   CRYPTO LAB - Cybersecurity Operations Theme & Classroom Presentation Styles
   ========================================================================== */

:root {
  --bg-dark: #090d16;
  --bg-card: #111827;
  --bg-card-hover: #1f293d;
  --bg-input: #0b1120;
  --border-color: #1f293d;
  --border-highlight: #374151;
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  /* Terminology Color System */
  --color-plaintext: #10b981;  /* Emerald */
  --color-ciphertext: #a855f7; /* Purple */
  --color-hash: #f59e0b;       /* Amber */
  --color-pubkey: #06b6d4;     /* Cyan */
  --color-privkey: #f43f5e;    /* Rose/Red */
  --color-sessionkey: #eab308; /* Yellow */
  --color-cert: #14b8a6;       /* Teal */
  --color-client: #38bdf8;     /* Sky */
  --color-server: #6366f1;     /* Indigo */
  --color-vpn: #00f3ff;        /* Neon Cyan */

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --presentation-scale: 1;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(14, 165, 233, 0.08) 0%, transparent 60%),
    radial-gradient(circle at 85% 30%, rgba(168, 85, 247, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 15% 70%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
  background-attachment: fixed;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: #1f293d;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #374151;
}

/* Terminology Badges & Highlights */
.badge-plaintext { color: var(--color-plaintext); background: rgba(16, 185, 129, 0.12); border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-ciphertext { color: var(--color-ciphertext); background: rgba(168, 85, 247, 0.12); border: 1px solid rgba(168, 85, 247, 0.3); }
.badge-hash { color: var(--color-hash); background: rgba(245, 158, 11, 0.12); border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-pubkey { color: var(--color-pubkey); background: rgba(6, 182, 212, 0.12); border: 1px solid rgba(6, 182, 212, 0.3); }
.badge-privkey { color: var(--color-privkey); background: rgba(244, 63, 94, 0.12); border: 1px solid rgba(244, 63, 94, 0.3); }
.badge-sessionkey { color: var(--color-sessionkey); background: rgba(234, 179, 8, 0.12); border: 1px solid rgba(234, 179, 8, 0.3); }
.badge-cert { color: var(--color-cert); background: rgba(20, 184, 166, 0.12); border: 1px solid rgba(20, 184, 166, 0.3); }
.badge-client { color: var(--color-client); background: rgba(56, 189, 248, 0.12); border: 1px solid rgba(56, 189, 248, 0.3); }
.badge-server { color: var(--color-server); background: rgba(99, 102, 241, 0.12); border: 1px solid rgba(99, 102, 241, 0.3); }
.badge-vpn { color: var(--color-vpn); background: rgba(0, 243, 255, 0.12); border: 1px solid rgba(0, 243, 255, 0.3); }

.term-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.glass-card {
  background: rgba(17, 24, 39, 0.75);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.mono-box {
  font-family: var(--font-mono);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: #38bdf8;
  word-break: break-all;
  white-space: pre-wrap;
}

/* Presentation Mode Overrides */
body.presentation-mode {
  font-size: 1.15rem;
}

body.presentation-mode .presentation-deck-controls {
  display: flex !important;
}

.presentation-deck-controls {
  display: none;
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(0, 243, 255, 0.4);
  backdrop-filter: blur(16px);
  padding: 0.6rem 1.5rem;
  border-radius: 50px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
}

.instructor-drawer {
  position: fixed;
  top: 0;
  right: -420px;
  width: 400px;
  height: 100vh;
  background: rgba(15, 23, 42, 0.98);
  border-left: 1px solid var(--border-highlight);
  z-index: 1000;
  transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 2rem;
  overflow-y: auto;
}

.instructor-drawer.open {
  right: 0;
}

/* Buttons Styling */
.btn-primary {
  background: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
  color: #fff;
  font-weight: 600;
  border: none;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
}

.btn-secondary {
  background: rgba(31, 41, 61, 0.8);
  color: var(--text-main);
  border: 1px solid var(--border-highlight);
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-accent {
  background: linear-gradient(135deg, #a855f7 0%, #7c3aed 100%);
  color: #fff;
  font-weight: 600;
  border: none;
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-pill {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-pill.active {
  color: #00f3ff;
  background: rgba(0, 243, 255, 0.1);
  border-color: rgba(0, 243, 255, 0.3);
}

/* ================= PRINT SPECIFIC STYLING FOR CERTIFICATES ================= */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
    background-image: none !important;
  }
  
  header, nav, footer, .presentation-deck-controls, .instructor-drawer, main > section:not(#module-6) {
    display: none !important;
  }

  #modal-certificate {
    position: absolute !important;
    left: 0 !important;
    top: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background: #ffffff !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  #modal-certificate > div {
    border: 8px solid #b45309 !important;
    background: #ffffff !important;
    color: #000000 !important;
    box-shadow: none !important;
    width: 100% !important;
    max-width: 100% !important;
    border-radius: 0 !important;
    padding: 2rem !important;
  }

  #cert-student-name-display {
    color: #0284c7 !important;
  }

  #modal-certificate .bg-black\/40, #modal-certificate .bg-black\/60 {
    background: #f1f5f9 !important;
    border-color: #cbd5e1 !important;
    color: #0f172a !important;
  }

  #cert-sha256-hash {
    background: #e2e8f0 !important;
    color: #0f172a !important;
  }
}