:root {
  --bg: #0a0e0c;
  --surface: #10160f;
  --surface-raised: #161e18;
  --border: #233028;
  --phosphor: #39ff6a;
  --phosphor-dim: #1f8f43;
  --text: #d7ffe4;
  --text-muted: #6f8c7a;
  --danger: #ff5d5d;
  --amber: #ffb84d;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(circle at 20% 0%, rgba(57,255,106,0.05), transparent 40%),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.012) 0px, rgba(255,255,255,0.012) 1px, transparent 1px, transparent 2px);
  color: var(--text);
  font-family: var(--mono);
  min-height: 100vh;
}

a { color: inherit; }

/* ---------- LANDING ---------- */

.landing-body {
  display: flex; align-items: center; justify-content: center;
  text-align: center;
}
.scanline-overlay {
  position: fixed; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(57,255,106,0.025) 0px,
              transparent 1px, transparent 3px);
}
.landing { max-width: 480px; padding: 2rem; }
.landing-led {
  width: 12px; height: 12px; margin: 0 auto 1.4rem; border-radius: 50%;
  background: var(--phosphor);
  box-shadow: 0 0 10px var(--phosphor), 0 0 24px var(--phosphor);
  animation: pulse 2.4s ease-in-out infinite;
}
.landing-title {
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  font-weight: 800; letter-spacing: 0.1em; margin: 0 0 0.4rem;
  color: var(--phosphor); text-shadow: 0 0 18px rgba(57,255,106,0.35);
}
.landing-sub { color: var(--text-muted); font-size: 0.85rem; margin: 0 0 1.6rem; }
.landing-meta { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 1.6rem; }
.amber-text { color: var(--amber); }
.landing-cta {
  display: inline-block; padding: 0.7rem 1.6rem; font-size: 0.9rem;
  text-decoration: none; margin-bottom: 1.6rem;
}
.landing-footnote { font-size: 0.68rem; color: var(--text-muted); letter-spacing: 0.04em; }

/* ---------- LOGIN ---------- */

.login-body { display: flex; align-items: center; justify-content: center; }
.login-card {
  width: min(360px, 90vw); background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 2.4rem 2rem; text-align: center;
  box-shadow: 0 0 40px rgba(57,255,106,0.06);
}
.login-led {
  width: 10px; height: 10px; margin: 0 auto 1.2rem; border-radius: 50%;
  background: var(--phosphor); box-shadow: 0 0 8px var(--phosphor), 0 0 18px var(--phosphor);
  animation: pulse 2.4s ease-in-out infinite;
}
.login-title {
  font-size: 1.3rem; font-weight: 800; letter-spacing: 0.08em; margin: 0 0 0.2rem;
  color: var(--phosphor); text-shadow: 0 0 14px rgba(57,255,106,0.35);
}
.login-sub { color: var(--text-muted); font-size: 0.78rem; letter-spacing: 0.04em; margin: 0 0 1.6rem; }
.login-error {
  background: rgba(255,93,93,0.1); border: 1px solid rgba(255,93,93,0.4); color: var(--danger);
  font-size: 0.8rem; padding: 0.5rem 0.7rem; border-radius: 6px; margin-bottom: 1rem;
}
.login-form { display: flex; flex-direction: column; gap: 0.3rem; text-align: left; }
.login-form label { font-size: 0.7rem; letter-spacing: 0.06em; color: var(--text-muted); margin-top: 0.6rem; }
.login-form input {
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  font-family: var(--mono); font-size: 0.9rem; padding: 0.55rem 0.6rem; border-radius: 6px; outline: none;
}
.login-form input:focus { border-color: var(--phosphor-dim); }
.login-form button {
  margin-top: 1.4rem; background: var(--phosphor); color: #04130a; border: none;
  font-family: var(--mono); font-weight: 700; letter-spacing: 0.04em; padding: 0.65rem;
  border-radius: 6px; cursor: pointer;
}
.login-form button:hover { filter: brightness(1.1); }

/* ---------- TOPBAR ---------- */

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem 1.4rem; border-bottom: 1px solid var(--border);
  background: var(--surface); position: sticky; top: 0; z-index: 10; flex-wrap: wrap; gap: 0.6rem;
}
.topbar-left { display: flex; align-items: center; gap: 0.7rem; }
.topbar h1 { font-size: 1rem; letter-spacing: 0.08em; margin: 0; color: var(--phosphor); }
.led { width: 9px; height: 9px; border-radius: 50%; background: var(--text-muted); display: inline-block; }
.led-on { background: var(--phosphor); box-shadow: 0 0 6px var(--phosphor), 0 0 14px var(--phosphor); animation: pulse 2.4s ease-in-out infinite; }
.mode-badge {
  font-size: 0.62rem; letter-spacing: 0.08em; padding: 0.18rem 0.5rem; border-radius: 4px;
  border: 1px solid var(--border); color: var(--text-muted);
}
.badge-dry { color: var(--amber); border-color: rgba(255,184,77,0.4); }
.badge-live { color: var(--danger); border-color: rgba(255,93,93,0.4); }
.topbar-right { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.btn {
  font-family: var(--mono); font-size: 0.73rem; background: transparent;
  border: 1px solid var(--border); color: var(--text); padding: 0.4rem 0.7rem;
  border-radius: 6px; cursor: pointer; text-decoration: none;
}
.btn-ghost:hover { border-color: var(--phosphor-dim); color: var(--phosphor); }
.btn-accent { background: var(--phosphor); color: #04130a; border: none; font-weight: 700; }
.btn-accent:hover { filter: brightness(1.1); }

/* ---------- TABS ---------- */

.tabs {
  display: flex; gap: 0.2rem; padding: 0 1.4rem; border-bottom: 1px solid var(--border);
  background: var(--surface); overflow-x: auto;
}
.tab-btn {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em; background: none;
  border: none; color: var(--text-muted); padding: 0.7rem 0.9rem; cursor: pointer;
  border-bottom: 2px solid transparent; white-space: nowrap;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--phosphor); border-bottom-color: var(--phosphor); }

.content { padding: 1.4rem; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---------- GRID / CARDS ---------- */

.grid { display: grid; gap: 1rem; margin-bottom: 1rem; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1rem 1.1rem; }
.card-label { font-size: 0.66rem; letter-spacing: 0.07em; color: var(--text-muted); margin-bottom: 0.5rem; text-transform: uppercase; }
.digit { font-size: 1.6rem; font-weight: 800; font-variant-numeric: tabular-nums; color: var(--phosphor); text-shadow: 0 0 10px rgba(57,255,106,0.25); }
.hint { font-size: 0.74rem; color: var(--text-muted); line-height: 1.5; }

/* ---------- TOGGLE SWITCH ---------- */

.toggle-row { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 0.6rem; font-size: 0.82rem; }
.switch { position: relative; display: inline-block; width: 42px; height: 22px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; cursor: pointer; inset: 0; background: var(--border);
  border-radius: 22px; transition: 0.2s;
}
.slider::before {
  content: ""; position: absolute; height: 16px; width: 16px; left: 3px; bottom: 3px;
  background: var(--text-muted); border-radius: 50%; transition: 0.2s;
}
input:checked + .slider { background: rgba(255,93,93,0.25); }
input:checked + .slider::before { transform: translateX(20px); background: var(--danger); }

/* ---------- FORMS ---------- */

.settings-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1.2rem;
}
.settings-grid label {
  display: flex; flex-direction: column; font-size: 0.66rem; letter-spacing: 0.04em;
  color: var(--text-muted); gap: 0.35rem;
}
.settings-grid input, .settings-grid select {
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  font-family: var(--mono); font-size: 0.85rem; padding: 0.5rem 0.6rem; border-radius: 5px;
}
.settings-actions { grid-column: 1 / -1; display: flex; align-items: center; gap: 0.8rem; }
.save-status { font-size: 0.75rem; color: var(--phosphor); }

.toolbar { display: flex; align-items: center; gap: 1rem; margin-bottom: 0.8rem; font-size: 0.8rem; }
.toolbar select {
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  font-family: var(--mono); padding: 0.3rem 0.5rem; border-radius: 5px;
}

/* ---------- LOG / TABLES ---------- */

.log-feed {
  background: #060907; border: 1px solid var(--border); border-radius: 6px; padding: 0.8rem;
  height: 280px; overflow-y: auto; font-size: 0.7rem; line-height: 1.5; color: #8fd9a8;
  white-space: pre-wrap; margin: 0;
}
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.76rem; }
th, td { text-align: left; padding: 0.4rem 0.6rem; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--text-muted); font-weight: 500; font-size: 0.66rem; letter-spacing: 0.04em; }
td.pos { color: var(--phosphor); }
td.neg { color: var(--danger); }

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .led-on, .login-led, .landing-led { animation: none; }
}