/* ====================================================================
   CRS RACK INTERFACE V2 — PHYSICAL HARDWARE AESTHETIC
   Inspired by Workshop Café physical mockup
   Enhanced depth, materials, and vintage hardware feel
   ==================================================================== */

:root {
  /* Chassis & Background */
  --rack-bg: #0a0a0a;
  --rack-border: #1a1a1a;
  --rack-shadow: rgba(0, 0, 0, 0.8);
  --chassis-dark: #0d0d0d;
  
  /* Bronze/Copper Rack Ears */
  --bronze-light: #cd9575;
  --bronze-mid: #b87a5a;
  --bronze-dark: #8b5a3c;
  --bronze-shadow: #5c3d28;
  
  /* Green Panel (CRS) */
  --panel-green: #2d4a2d;
  --panel-green-light: #3d5a3d;
  --panel-green-dark: #1d3a1d;
  --panel-shadow: rgba(0, 0, 0, 0.6);
  
  /* Gold/Cream Text */
  --text-gold: #d4af37;
  --text-cream: #f4e8d0;
  --text-dim: rgba(244, 232, 208, 0.7);
  
  /* LEDs */
  --led-red: #ff3333;
  --led-green: #44ff44;
  --led-yellow: #ffaa00;
  --led-orange: #ff7700;
  --led-glow: rgba(68, 255, 68, 0.6);
  
  /* Metal Elements */
  --metal-light: #e8e8e8;
  --metal-mid: #c0c0c0;
  --metal-dark: #909090;
  
  /* CTA Orange */
  --cta-orange: #ff8833;
  --cta-orange-dark: #dd6611;
}

/* ==== GLOBAL RACK CHASSIS ==== */
body {
  background: var(--rack-bg);
  color: var(--text-cream);
  margin: 0;
  padding: 0;
  font-family: 'Space Mono', 'JetBrains Mono', monospace;
}

/* ==== ENHANCED RACK UNIT WITH BRONZE EARS ==== */
.rack-unit {
  position: relative;
  margin: 0 0 2px 0;
  background: var(--panel-green);
  border-top: 3px solid var(--chassis-dark);
  border-bottom: 3px solid var(--chassis-dark);
  box-shadow: 
    inset 0 2px 4px rgba(0, 0, 0, 0.4),
    inset 0 -2px 4px rgba(0, 0, 0, 0.4),
    0 4px 8px rgba(0, 0, 0, 0.5);
  padding: 1rem 2rem; /* REDUCED from 2rem 5rem */
  min-height: 80px; /* REDUCED from 120px */
}

/* Bronze Rack Ears (left and right) */
.rack-unit::before,
.rack-unit::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 4rem;
  background: linear-gradient(
    180deg,
    var(--bronze-light) 0%,
    var(--bronze-mid) 40%,
    var(--bronze-dark) 70%,
    var(--bronze-shadow) 100%
  );
  box-shadow: 
    inset -2px 0 4px rgba(0, 0, 0, 0.3),
    inset 2px 0 4px rgba(255, 255, 255, 0.1);
}

.rack-unit::before {
  left: 0;
  border-right: 1px solid var(--bronze-shadow);
}

.rack-unit::after {
  right: 0;
  border-left: 1px solid var(--bronze-shadow);
}

/* Rack Ear Holes (pseudo-elements on ears) */
.rack-unit {
  background-image: 
    /* Left ear holes */
    radial-gradient(circle at 2rem 2rem, rgba(0, 0, 0, 0.5) 6px, transparent 6px),
    radial-gradient(circle at 2rem calc(100% - 2rem), rgba(0, 0, 0, 0.5) 6px, transparent 6px),
    /* Right ear holes */
    radial-gradient(circle at calc(100% - 2rem) 2rem, rgba(0, 0, 0, 0.5) 6px, transparent 6px),
    radial-gradient(circle at calc(100% - 2rem) calc(100% - 2rem), rgba(0, 0, 0, 0.5) 6px, transparent 6px);
  background-repeat: no-repeat;
  background-color: var(--panel-green);
}

/* ==== CORNER SCREWS (3D EFFECT) ==== */
.rack-screw {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: 
    radial-gradient(circle at 35% 35%, #888, #333 50%, #111);
  box-shadow: 
    inset 0 1px 2px rgba(0, 0, 0, 0.8),
    0 1px 2px rgba(255, 255, 255, 0.1);
  z-index: 10;
}

/* Phillips head cross */
.rack-screw::before,
.rack-screw::after {
  content: '';
  position: absolute;
  background: #000;
}

.rack-screw::before {
  width: 1px;
  height: 6px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.rack-screw::after {
  width: 6px;
  height: 1px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

/* Position corner screws */
.rack-unit .rack-screw:nth-of-type(1) { top: 1.5rem; left: 1.5rem; }
.rack-unit .rack-screw:nth-of-type(2) { top: 1.5rem; right: 1.5rem; }
.rack-unit .rack-screw:nth-of-type(3) { bottom: 1.5rem; left: 1.5rem; }
.rack-unit .rack-screw:nth-of-type(4) { bottom: 1.5rem; right: 1.5rem; }

/* ==== SECTION HEADER WITH GOLD TEXT ==== */
.rack-unit-title {
  font-family: 'Oswald', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-gold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin: 0 0 1.5rem 0;
  text-shadow: 
    0 1px 2px rgba(0, 0, 0, 0.5),
    0 0 8px rgba(212, 175, 55, 0.3);
  position: relative;
  padding-top: 1.5rem;
}

/* Status LED above title */
.rack-unit-title::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--led-green);
  box-shadow: 
    0 0 8px var(--led-green),
    0 0 16px var(--led-glow),
    inset 0 -2px 4px rgba(0, 0, 0, 0.3);
}

/* Different LED colors per section */
.rack-unit.led-red .rack-unit-title::before {
  background: var(--led-red);
  box-shadow: 
    0 0 8px var(--led-red),
    0 0 16px rgba(255, 51, 51, 0.6),
    inset 0 -2px 4px rgba(0, 0, 0, 0.3);
}

.rack-unit.led-orange .rack-unit-title::before {
  background: var(--led-orange);
  box-shadow: 
    0 0 8px var(--led-orange),
    0 0 16px rgba(255, 119, 0, 0.6),
    inset 0 -2px 4px rgba(0, 0, 0, 0.3);
}

/* ==== BODY TEXT (CREAM ON GREEN) ==== */
.rack-unit p,
.rack-unit li {
  color: var(--text-cream);
  font-size: 0.95rem;
  line-height: 1.6;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* ==== ENHANCED CTA BUTTONS ==== */
.cta-button {
  display: inline-block;
  background: linear-gradient(
    180deg,
    var(--cta-orange) 0%,
    var(--cta-orange-dark) 100%
  );
  color: #000;
  font-weight: 700;
  padding: 14px 28px;
  border: 3px solid var(--cta-orange-dark);
  border-radius: 6px;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.3);
  box-shadow: 
    0 4px 8px rgba(0, 0, 0, 0.4),
    inset 0 1px 2px rgba(255, 255, 255, 0.2);
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: all 0.15s ease;
  position: relative;
}


.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 6px 12px rgba(0, 0, 0, 0.5),
    inset 0 1px 2px rgba(255, 255, 255, 0.3);
}

.cta-button:active {
  transform: translateY(0);
  box-shadow: 
    0 2px 4px rgba(0, 0, 0, 0.4),
    inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* ==== RACK HEADER (TOP UNIT) ==== */
.rack-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--chassis-dark);
  border-bottom: 4px solid var(--rack-border);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  min-height: 80px;
}

/* ==== METAL PLATE (ENHANCED) ==== */
.metal-plate {
  background: linear-gradient(
    180deg,
    var(--metal-light) 0%,
    var(--metal-mid) 50%,
    var(--metal-dark) 100%
  );
  border: 2px solid #888;
  border-radius: 4px;
  box-shadow: 
    inset 0 1px 0 rgba(255, 255, 255, 0.5),
    inset 0 -1px 0 rgba(0, 0, 0, 0.3),
    0 2px 4px rgba(0, 0, 0, 0.4);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4);
  color: #222;
  font-weight: 700;
  padding: 8px 20px;
  font-family: 'Oswald', sans-serif;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  display: inline-block;
  margin: 0 8px;
}

/* ==== TRAFFIC LIGHTS (ENHANCED GLOW) ==== */
.traffic-lights {
  display: flex;
  gap: 6px;
  align-items: center;
}

.traffic-light {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  box-shadow: 
    0 0 6px currentColor,
    0 0 12px currentColor,
    inset 0 -2px 4px rgba(0, 0, 0, 0.4),
    inset 0 1px 2px rgba(255, 255, 255, 0.2);
  display: inline-block;
}

.traffic-light.red { 
  background: radial-gradient(circle at 35% 35%, #ff6666, var(--led-red));
  color: var(--led-red); 
}

.traffic-light.yellow { 
  background: radial-gradient(circle at 35% 35%, #ffcc66, var(--led-yellow));
  color: var(--led-yellow); 
}

.traffic-light.green { 
  background: radial-gradient(circle at 35% 35%, #66ff66, var(--led-green));
  color: var(--led-green); 
}

/* ==== LOGO STYLING ==== */
.rack-logo-block {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-svg {
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
}

/* ==== SUBTITLE BAR ==== */
.crs-subtitle-bar {
  background: linear-gradient(
    180deg,
    var(--panel-green-light) 0%,
    var(--panel-green) 100%
  );
  border-top: 1px solid rgba(0, 0, 0, 0.3);
  border-bottom: 2px solid var(--chassis-dark);
  padding: 12px 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-cream);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  box-shadow: 
    inset 0 2px 4px rgba(0, 0, 0, 0.2),
    0 2px 4px rgba(0, 0, 0, 0.3);
}

/* ==== NAVIGATION LINKS ==== */
.rack-nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.rack-nav-links a {
  color: var(--text-cream);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.2s ease;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.rack-nav-links a:hover {
  color: var(--text-gold);
  text-shadow: 0 0 8px rgba(212, 175, 55, 0.5);
}

/* ==== DROPDOWN MENU ==== */
.book-dropdown-trigger {
  background: var(--cta-orange);
  color: #000;
  border: 2px solid var(--cta-orange-dark);
  padding: 10px 20px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  text-transform: uppercase;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  transition: all 0.15s ease;
}

.book-dropdown-trigger:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

.book-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: var(--panel-green);
  border: 2px solid var(--bronze-dark);
  border-radius: 4px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.6);
  min-width: 220px;
  z-index: 1000;
}

.book-dropdown-menu[aria-hidden="true"] {
  display: none;
}

.book-dropdown-menu a {
  display: block;
  padding: 12px 20px;
  color: var(--text-cream);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
  transition: background 0.2s ease;
}

.book-dropdown-menu a:last-child {
  border-bottom: none;
}

.book-dropdown-menu a:hover {
  background: var(--panel-green-light);
  color: var(--text-gold);
}

/* ==== FOOTER STYLING ==== */
footer {
  background: var(--chassis-dark);
  border-top: 3px solid var(--rack-border);
  padding: 2rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.footer-section {
  margin-bottom: 1.5rem;
}

.footer-section h3 {
  color: var(--text-gold);
  font-size: 1rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.footer-section p {
  margin: 0.5rem 0;
  line-height: 1.6;
}

/* ==== RESPONSIVE ==== */
@media (max-width: 768px) {
  .rack-unit {
    padding: 1.5rem 3rem;
  }
  
  .rack-unit::before,
  .rack-unit::after {
    width: 2.5rem;
  }
  
  .rack-header {
    flex-direction: column;
    padding: 1rem;
    gap: 1rem;
  }
  
  .metal-plate {
    font-size: 0.75rem;
    padding: 6px 12px;
  }
  
  .rack-nav-links {
    flex-direction: column;
    gap: 10px;
  }
}