:root {
  --bg: #14181f;
  --bg-panel: #1b212b;
  --bg-card: #212836;
  --border: #2c3444;
  --text: #e6e9ef;
  --text-dim: #8b93a3;
  --accent: #5ee0a4;
  --accent-dim: #2f7a5b;
  --danger: #e0605e;
  --font-display: 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'Consolas', 'Courier New', monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  min-height: 100vh;
}

.screen { min-height: 100vh; }

/* ---------- LOGIN ---------- */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 20% 20%, rgba(94,224,164,0.08), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(94,224,164,0.05), transparent 40%),
    var(--bg);
}

.login-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 40px 36px;
  width: 340px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.login-mark {
  font-size: 34px;
  margin-bottom: 8px;
}

.login-card h1 {
  font-size: 20px;
  margin: 0 0 4px;
  letter-spacing: 0.3px;
}

.login-sub {
  color: var(--text-dim);
  font-size: 13px;
  margin: 0 0 24px;
}

#login-form { text-align: left; }

#login-form label {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  margin: 14px 0 6px;
}

#login-form input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}

#login-form input:focus {
  outline: none;
  border-color: var(--accent);
}

#login-form button {
  width: 100%;
  margin-top: 22px;
  padding: 11px;
  background: var(--accent);
  color: #0c1410;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.15s;
}
#login-form button:hover { opacity: 0.9; }

.error-msg {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  min-height: 16px;
}

/* ---------- DASHBOARD LAYOUT ---------- */
#dashboard-screen {
  display: flex;
}

.sidebar {
  width: 220px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  position: fixed;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px 20px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.brand-mark { font-size: 20px; }
.brand-name { font-weight: 600; font-size: 14px; letter-spacing: 0.3px; }

nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }

.nav-btn {
  text-align: left;
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.12s;
}
.nav-btn:hover { background: var(--bg-card); color: var(--text); }
.nav-btn.active { background: var(--accent-dim); color: var(--accent); font-weight: 600; }

.logout-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 9px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
}
.logout-btn:hover { border-color: var(--danger); color: var(--danger); }

.content {
  margin-left: 220px;
  padding: 32px 40px;
  flex: 1;
  max-width: 900px;
}

.tab { display: none; }
.tab.active { display: block; }

h2 { margin-top: 0; font-size: 22px; }
h3 { font-size: 15px; margin: 0 0 12px; color: var(--text-dim); font-weight: 600; }

.hint { color: var(--text-dim); font-size: 13px; line-height: 1.5; }

.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 18px;
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
}
.btn-secondary:hover { border-color: var(--accent); }
.btn-secondary.small { padding: 6px 12px; font-size: 12px; margin-top: 10px; }

/* ---------- CONSOLE ---------- */
.console-output {
  background: #0c1017;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  height: 320px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  white-space: pre-wrap;
  color: #a7f3d0;
  margin-bottom: 12px;
}
.console-output .line-cmd { color: #7dd3fc; }
.console-output .line-err { color: var(--danger); }

.console-form { display: flex; gap: 8px; }
.console-form input {
  flex: 1;
  padding: 10px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
}
.console-form button {
  padding: 10px 18px;
  background: var(--accent);
  color: #0c1410;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

/* ---------- FORMS ---------- */
.inline-form { display: flex; gap: 8px; flex-wrap: wrap; }
.inline-form input,
.inline-form select {
  flex: 1;
  min-width: 140px;
  padding: 9px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
}
.inline-form select { flex: none; min-width: 160px; }
.inline-form button {
  padding: 9px 18px;
  background: var(--accent);
  color: #0c1410;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.inline-form button:disabled { opacity: 0.5; cursor: not-allowed; }

code {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ---------- CONFIG EDITOR ---------- */
.config-tabs { display: flex; gap: 6px; margin-bottom: 14px; }
.config-mode-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
}
.config-mode-btn.active { background: var(--accent-dim); color: var(--accent); border-color: var(--accent-dim); font-weight: 600; }

.config-field-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
}
.config-field-row:last-child { border-bottom: none; }
.config-field-label {
  flex: 0 0 auto;
  min-width: 200px;
  max-width: 260px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  word-break: break-word;
}
.config-field-input {
  flex: 1;
  padding: 8px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
}
.config-field-note {
  flex: 1;
  color: var(--text-dim);
  font-size: 12px;
  font-style: italic;
}
input[type="checkbox"].config-field-input { flex: none; width: 18px; height: 18px; }

.raw-editor {
  width: 100%;
  min-height: 260px;
  background: #0c1017;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: #a7f3d0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  padding: 12px;
  resize: vertical;
}
.raw-editor:focus { outline: none; border-color: var(--accent); }

.status-badge {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 20px;
  font-weight: 600;
}
.status-badge.on { background: rgba(94,224,164,0.15); color: var(--accent); }
.status-badge.off { background: rgba(224,96,94,0.15); color: var(--danger); }

.raw-output {
  font-family: var(--font-mono);
  font-size: 12px;
  background: #0c1017;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  color: var(--text-dim);
  white-space: pre-wrap;
  max-height: 160px;
  overflow-y: auto;
}

.feedback {
  font-size: 13px;
  margin-top: 10px;
  color: var(--accent);
  min-height: 16px;
}
.feedback.error { color: var(--danger); }

/* ---------- SCHEMATICS TABLE ---------- */
.schem-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.schem-table th {
  text-align: left;
  color: var(--text-dim);
  font-weight: 500;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
.schem-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
}
.schem-table button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--danger);
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
}

/* ---------- STATUS ---------- */
.status-loading { color: var(--text-dim); }
.status-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.status-row:last-child { border-bottom: none; }
.status-ok { color: var(--accent); }
.status-bad { color: var(--danger); }

@media (max-width: 720px) {
  .sidebar { position: static; width: 100%; height: auto; flex-direction: row; overflow-x: auto; }
  #dashboard-screen { flex-direction: column; }
  .content { margin-left: 0; padding: 20px; }
  nav { flex-direction: row; }
}