:root{
  --bg: #0a0f1a;
  --bg-2: #0d1420;
  --panel: #121b2c;
  --panel-2: #162033;
  --border: #22304a;
  --border-soft: #1a2438;
  --text: #eaf0fa;
  --text-muted: #8b96ac;
  --text-dim: #5b6a85;
  --accent: #59f0c9;
  --accent-dim: rgba(89, 240, 201, 0.35);
  --accent-2: #7c93ff;
  --danger: #ff8a8a;
  --radius: 20px;
}

*{ box-sizing: border-box; }

html, body{
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  min-height: 100%;
}

body{
  position: relative;
  overflow-x: hidden;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 42px 42px;
  background-position: -1px -1px;
}

/* cursor spotlight */
#spotlight{
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: radial-gradient(circle 340px at var(--sx, 50%) var(--sy, 30%),
    rgba(89, 240, 201, 0.07), rgba(124,147,255,0.045) 45%, transparent 70%);
  transition: opacity .3s ease;
}

.wrap{
  position: relative;
  z-index: 2;
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 28px 80px;
}

header{
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 48px;
}

.eyebrow{
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--accent);
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.eyebrow .dot{
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-dim);
  animation: pulse-dot 2.2s ease-out infinite;
}

h1{
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 10px;
  letter-spacing: -.01em;
}

.sub{
  color: var(--text-muted);
  font-size: 15px;
  margin: 0;
  max-width: 46ch;
}

.clock{
  font-family: 'IBM Plex Mono', monospace;
  text-align: right;
  color: var(--text-muted);
  font-size: 13px;
  padding-top: 4px;
}
.clock .time{
  color: var(--text);
  font-size: 22px;
  font-weight: 500;
  display: block;
  margin-bottom: 4px;
}

/* main grid */
.grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 44px;
}

@media (min-width: 720px){
  .grid{ grid-template-columns: repeat(4, 1fr); }
}

.tile{
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 22px;
  padding: 26px 22px;
  min-height: 168px;
  background: linear-gradient(160deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  overflow: hidden;
  transition: transform .35s cubic-bezier(.2,.8,.2,1), border-color .35s ease, box-shadow .35s ease;
}

.tile::before{
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% -10%, var(--accent-dim), transparent 55%);
  opacity: 0;
  transition: opacity .35s ease;
}

@media (hover: hover){
  .tile:hover, .tile:focus-visible{
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 18px 40px -18px rgba(89, 240, 201, 0.35);
  }
  .tile:hover::before, .tile:focus-visible::before{ opacity: 1; }
  .tile:hover .icon, .tile:focus-visible .icon{
    color: var(--accent);
    transform: translateY(-2px);
  }
  .tile:hover .arrow, .tile:focus-visible .arrow{
    transform: translate(3px, -3px);
    opacity: 1;
  }
}

.tile:focus-visible{ outline: 2px solid var(--accent); outline-offset: 3px; }

.tile-top{
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.icon{
  width: 30px; height: 30px;
  color: var(--text-muted);
  transition: color .3s ease, transform .3s ease;
  flex-shrink: 0;
}
.icon svg{ width: 100%; height: 100%; }

.arrow{
  color: var(--text-dim);
  opacity: .6;
  transition: transform .3s ease, opacity .3s ease;
}

.tile-name{
  font-family: 'IBM Plex Mono', monospace;
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 4px;
}

.tile-desc{
  color: var(--text-muted);
  font-size: 13px;
  margin: 0 0 12px;
}

.tile-foot{
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  color: var(--text-dim);
}

.status-dot{
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-dim);
  animation: pulse-dot 2.6s ease-out infinite;
  flex-shrink: 0;
}

/* internet tile signal bars micro-interaction */
.bars{ display:flex; align-items:flex-end; gap:3px; width:30px; height:30px; }
.bars span{
  display:block; width:5px; background: currentColor; border-radius: 2px;
  opacity: .55;
  transition: opacity .3s ease, transform .3s ease;
}
.bars span:nth-child(1){ height: 30%; }
.bars span:nth-child(2){ height: 55%; }
.bars span:nth-child(3){ height: 78%; }
.bars span:nth-child(4){ height: 100%; }
@media (hover: hover){
  .tile:hover .bars span, .tile:focus-visible .bars span{ opacity: 1; }
  .tile:hover .bars span:nth-child(1), .tile:focus-visible .bars span:nth-child(1){ animation: bar-bounce .9s ease-in-out infinite; }
  .tile:hover .bars span:nth-child(2), .tile:focus-visible .bars span:nth-child(2){ animation: bar-bounce .9s ease-in-out .1s infinite; }
  .tile:hover .bars span:nth-child(3), .tile:focus-visible .bars span:nth-child(3){ animation: bar-bounce .9s ease-in-out .2s infinite; }
  .tile:hover .bars span:nth-child(4), .tile:focus-visible .bars span:nth-child(4){ animation: bar-bounce .9s ease-in-out .3s infinite; }
}

/* storage rack section */
.section-label{
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-dim);
}
.section-label::after{
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

.rack{
  position: relative;
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  padding: 2px;
}

@media (min-width: 720px){
  .rack{ grid-template-columns: repeat(3, 1fr); }
}

.rack::before, .rack::after{
  content: "";
  position: absolute;
  top: 10px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--border);
  z-index: 3;
}
.rack::before{ left: 10px; }
.rack::after{ right: 10px; }

.slot{
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 20px;
  min-height: 128px;
  background: var(--panel);
  text-decoration: none;
  color: var(--text);
  transition: background .3s ease, transform .3s ease;
}

@media (hover: hover){
  .slot:hover, .slot:focus-visible{
    background: var(--panel-2);
  }
  .slot:hover .icon, .slot:focus-visible .icon{ color: var(--accent-2); }
  .slot:hover .arrow, .slot:focus-visible .arrow{ transform: translate(3px, -3px); opacity: 1; }
}
.slot:focus-visible{ outline: 2px solid var(--accent-2); outline-offset: -2px; }

.slot-unit{
  position: absolute;
  top: 18px; right: 20px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: .05em;
}

footer{
  margin-top: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--text-dim);
}

footer .status{
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}

/* ---------- auth page ---------- */
.auth-wrap{
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
}

.card{
  width: 100%;
  max-width: 380px;
  background: linear-gradient(160deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: 0 30px 70px -30px rgba(0,0,0,.6);
}

.card h1{ font-size: 26px; margin-bottom: 8px; }
.card .sub{ margin-bottom: 28px; font-size: 14px; }

.field{ display: block; margin-bottom: 8px; }
.field-label{
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: .05em;
  margin-bottom: 8px;
}

.input-wrap{
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrap input{
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 13px 44px 13px 14px;
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  color: var(--text);
  transition: border-color .25s ease, box-shadow .25s ease;
}

.input-wrap input:focus{
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.input-wrap input.error-input{
  border-color: var(--danger);
}

.toggle-vis{
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  padding: 6px;
  color: var(--text-dim);
  cursor: pointer;
  display: flex;
  transition: color .2s ease;
}
.toggle-vis:hover{ color: var(--text-muted); }
.toggle-vis svg{ width: 18px; height: 18px; }

.error-msg{
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  color: var(--danger);
  margin: 10px 0 0;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 18px;
}

.submit{
  width: 100%;
  margin-top: 22px;
  padding: 14px;
  border: none;
  border-radius: 12px;
  background: var(--accent);
  color: #06231c;
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: .02em;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.submit:hover{ box-shadow: 0 12px 30px -12px rgba(89, 240, 201, 0.55); transform: translateY(-1px); }
.submit:active{ transform: translateY(0); }
.submit[disabled]{ opacity: .6; cursor: default; box-shadow: none; transform: none; }

.hint{
  margin: 22px 0 0;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  color: var(--text-dim);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}

@keyframes pulse-dot{
  0%{ box-shadow: 0 0 0 0 var(--accent-dim); }
  70%{ box-shadow: 0 0 0 8px rgba(89,240,201,0); }
  100%{ box-shadow: 0 0 0 0 rgba(89,240,201,0); }
}

@keyframes bar-bounce{
  0%, 100%{ transform: scaleY(1); }
  50%{ transform: scaleY(1.25); }
}

@keyframes shake{
  0%, 100%{ transform: translateX(0); }
  20%{ transform: translateX(-6px); }
  40%{ transform: translateX(5px); }
  60%{ transform: translateX(-4px); }
  80%{ transform: translateX(3px); }
}
.shake{ animation: shake .4s ease; }

@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}