:root {
  --bg: #f4f4f3;
  --surface: #ffffff;
  --surface-2: #fafaf9;
  --border: #e5e5e3;
  --border-strong: #d4d4d2;
  --text: #17171a;
  --text-dim: #52525b;
  --muted: #78787f;
  --accent: #0d9488;
  --accent-fg: #ffffff;
  --accent-soft: rgba(13, 148, 136, 0.10);
  --accent-line: rgba(13, 148, 136, 0.35);
  --success: #16a34a;
  --success-soft: rgba(22, 163, 74, 0.12);
  --warning: #ca8a04;
  --warning-soft: rgba(202, 138, 4, 0.14);
  --danger: #dc2626;
  --danger-soft: rgba(220, 38, 38, 0.10);
  --radius: 8px;
  --shadow-sm: 0 1px 2px rgba(15,15,20,0.04);
  --shadow-md: 0 4px 14px rgba(15,15,20,0.06);
  --shadow-lg: 0 12px 32px rgba(15,15,20,0.10);
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
[data-theme="dark"] {
  --bg: #0c0c0e;
  --surface: #151518;
  --surface-2: #1a1a1e;
  --border: #24242a;
  --border-strong: #34343c;
  --text: #e9e9ec;
  --text-dim: #b8b8bf;
  --muted: #8e8e96;
  --accent: #14b8a6;
  --accent-soft: rgba(20, 184, 166, 0.14);
  --accent-line: rgba(20, 184, 166, 0.45);
  --success: #22c55e;
  --success-soft: rgba(34, 197, 94, 0.16);
  --warning: #eab308;
  --warning-soft: rgba(234, 179, 8, 0.16);
  --danger: #ef4444;
  --danger-soft: rgba(239, 68, 68, 0.16);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.30);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.50);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.hidden { display: none !important; }
.mono { font-family: var(--font-mono); }
.muted { color: var(--muted); }
.small { font-size: 11px; }

/* ---------------- Login ---------------- */
.login-shell {
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 24px; gap: 32px;
}
.login-card {
  width: 100%; max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}
.login-card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent 70%);
}
.login-brand { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.login-title { font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }
.login-sub { color: var(--muted); font-size: 12px; letter-spacing: 0.02em; }

/* ---------------- App shell ---------------- */
.app-shell { min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 22px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
  flex-wrap: wrap;
  backdrop-filter: saturate(180%);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 32px; height: 32px;
  background: var(--accent);
  border-radius: 7px;
  position: relative; flex: 0 0 auto;
  box-shadow: var(--shadow-sm);
}
.brand-mark::after {
  content: ""; position: absolute; inset: 7px;
  border: 2px solid var(--surface); border-radius: 3px;
}
.brand-title { font-weight: 600; font-size: 14px; letter-spacing: -0.01em; }
.brand-sub { color: var(--muted); font-size: 11px; letter-spacing: 0.02em; }

/* Tabs */
.tabs { display: flex; gap: 2px; flex: 1 1 auto; justify-content: center; }
.tab {
  position: relative;
  background: transparent;
  border: none;
  color: var(--muted);
  font-family: inherit; font-size: 13px; font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
}
.tab:hover { color: var(--text); background: var(--surface-2); }
.tab.active { color: var(--accent); background: var(--accent-soft); }
.tab.active::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -1px;
  transform: translateX(-50%);
  width: 20px; height: 2px;
  background: var(--accent);
  border-radius: 2px 2px 0 0;
}

.topbar-right { display: flex; align-items: center; gap: 10px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 11px 5px 9px;
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  transition: border-color 0.15s, background 0.15s;
}
.chip:has(.dot-success) { border-color: var(--accent-line); background: var(--accent-soft); }
.chip:has(.dot-danger)  { border-color: rgba(220,38,38,0.35); }

/* ---------------- Container / cards ---------------- */
.container {
  max-width: 980px; margin: 0 auto; width: 100%;
  padding: 22px; display: flex; flex-direction: column; gap: 18px; flex: 1;
}
.page { display: flex; flex-direction: column; gap: 18px; }
.grid-2 { display: grid; gap: 18px; grid-template-columns: 1fr 1fr; }
.grid-2.tight { gap: 12px; }
@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
  .tabs { order: 3; width: 100%; justify-content: flex-start; }
  .topbar { padding: 12px 16px; gap: 10px; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s, border-color 0.2s;
}
.card:hover { box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent-line), transparent 65%);
  border-radius: var(--radius) var(--radius) 0 0;
  opacity: 0.9;
}
.card.danger-zone::before {
  background: linear-gradient(90deg, rgba(220,38,38,0.45), transparent 65%);
}
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.card-head h2 {
  margin: 0; font-size: 11.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--muted);
}

/* ---------------- Buttons ---------------- */
button {
  font-family: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer;
  border-radius: 6px;
  padding: 9px 15px;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s, color 0.15s,
              transform 0.08s, box-shadow 0.15s;
  position: relative;
}
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
button:disabled { opacity: 0.45; cursor: not-allowed; }
button:not(:disabled):active { transform: translateY(1px); }

.primary-btn {
  background: var(--accent); color: var(--accent-fg);
  border-color: var(--accent);
  box-shadow: 0 1px 2px rgba(13,148,136,0.20);
}
.primary-btn:hover:not(:disabled) {
  filter: brightness(0.94);
  box-shadow: 0 2px 6px rgba(13,148,136,0.28);
}
.ghost-btn {
  background: var(--surface); color: var(--text);
  border-color: var(--border);
}
.ghost-btn:hover:not(:disabled) {
  border-color: var(--border-strong);
  background: var(--surface-2);
}
.danger-btn {
  background: var(--surface); color: var(--danger);
  border-color: rgba(220,38,38,0.35);
}
.danger-btn:hover:not(:disabled) {
  background: var(--danger); color: #fff;
  border-color: var(--danger);
  box-shadow: 0 2px 6px rgba(220,38,38,0.25);
}
.icon-btn {
  width: 36px; height: 36px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--surface); color: var(--text-dim);
  border: 1px solid var(--border);
  border-radius: 7px;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }
.icon-btn svg { transition: transform 0.3s ease, opacity 0.2s; }
[data-theme="light"] #theme-toggle .icon-moon { display: block; }
[data-theme="light"] #theme-toggle .icon-sun  { display: none; }
[data-theme="dark"]  #theme-toggle .icon-sun  { display: block; }
[data-theme="dark"]  #theme-toggle .icon-moon { display: none; }
.icon-btn:hover svg { transform: rotate(20deg) scale(1.08); }

.compact { padding: 6px 11px; font-size: 12px; }
.block-btn { width: 100%; padding: 11px; font-weight: 600; letter-spacing: 0.02em; }
.btn-row { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }

/* ---------------- Fields ---------------- */
.field { display: block; margin-top: 14px; }
.field > span {
  display: block; font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted); margin-bottom: 7px;
}
.field input {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-mono); font-size: 13px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}
.field input:hover { border-color: var(--border-strong); }
.field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: var(--surface-2);
}

/* ---------------- KV list ---------------- */
.kv { margin: 0; padding: 0; }
.kv > div {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}
.kv > div:last-child { border-bottom: none; }
.kv dt { color: var(--muted); font-size: 12.5px; }
.kv dd {
  margin: 0; font-family: var(--font-mono); font-size: 12.5px;
  display: flex; align-items: center; gap: 8px;
  color: var(--text);
}

/* ---------------- Status dot ---------------- */
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  display: inline-block; flex: 0 0 auto;
  position: relative;
}
.dot-success { background: var(--success); box-shadow: 0 0 0 3px var(--success-soft); }
.dot-warning { background: var(--warning); box-shadow: 0 0 0 3px var(--warning-soft); animation: pulse-warn 1.6s ease-in-out infinite; }
.dot-danger  { background: var(--danger); }
.dot-neutral { background: var(--muted); }
@keyframes pulse-warn {
  0%, 100% { box-shadow: 0 0 0 3px var(--warning-soft); }
  50%      { box-shadow: 0 0 0 6px rgba(202,138,4,0.04); }
}

/* ---------------- Pump display ---------------- */
.pump-display {
  display: flex; flex-direction: column; align-items: center;
  padding: 20px 0 10px;
  position: relative;
}
.pump-display::before {
  content: "";
  position: absolute; inset: 6px 20px 14px;
  border-radius: 10px;
  background: radial-gradient(ellipse at center, transparent 40%, transparent 70%);
  pointer-events: none;
  transition: background 0.3s;
}
.pump-display:has(.pump-state.on)::before {
  background: radial-gradient(ellipse at center, var(--success-soft) 0%, transparent 70%);
}
.pump-state {
  font-size: 54px; font-weight: 700; letter-spacing: -0.03em;
  font-family: var(--font-mono); line-height: 1;
  color: var(--muted);
  transition: color 0.25s, text-shadow 0.25s;
  position: relative;
}
.pump-state.on  { color: var(--success); text-shadow: 0 0 24px var(--success-soft); }
.pump-state.off { color: var(--text-dim); }
.pump-sub { color: var(--muted); font-size: 12px; margin-top: 8px; text-align: center; }

/* ---------------- Mode ---------------- */
.mode-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 10px 0;
}
.mode-label { color: var(--muted); font-size: 12.5px; }
.mode-state {
  font-family: var(--font-mono); font-size: 20px; font-weight: 600;
  margin-top: 3px;
  transition: color 0.2s;
}
.mode-state.on  { color: var(--success); }
.mode-state.off { color: var(--muted); }

/* ---------------- Next schedule ---------------- */
.next-sched { padding: 6px 0; }
.next-sched .big {
  font-family: var(--font-mono); font-size: 24px;
  font-weight: 600; letter-spacing: -0.01em;
}
.next-sched .label { color: var(--muted); font-size: 12px; margin-top: 6px; }

/* ---------------- Activity ---------------- */
.activity-list {
  list-style: none; margin: 0; padding: 0;
  max-height: 260px; overflow-y: auto;
}
.activity-list li {
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12.5px;
  display: flex; gap: 10px; align-items: baseline;
  animation: slide-in 0.2s ease-out;
}
@keyframes slide-in {
  from { opacity: 0; transform: translateX(-4px); }
  to   { opacity: 1; transform: translateX(0); }
}
.activity-list li:last-child { border-bottom: none; }
.act-time {
  color: var(--muted); font-family: var(--font-mono);
  font-size: 11px; flex: 0 0 auto;
}
.act-tag {
  font-size: 9.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 2px 7px; border-radius: 4px;
  flex: 0 0 auto;
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--border);
}
.act-tag.MANUAL   { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }
.act-tag.SCHEDULE { color: var(--warning); border-color: rgba(202,138,4,0.4); background: var(--warning-soft); }
.act-tag.SYSTEM   { color: var(--muted); }
.act-msg { flex: 1; color: var(--text-dim); }

/* ---------------- Schedule ---------------- */
.sched-list { list-style: none; margin: 10px 0 0; padding: 0; }
.sched-list li {
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
}
.sched-list li:last-child { border-bottom: none; }
.sched-id {
  font-family: var(--font-mono); color: var(--muted);
  font-size: 12px; min-width: 32px;
}
.sched-times {
  font-family: var(--font-mono); font-size: 14.5px; font-weight: 600;
  letter-spacing: -0.01em;
}
.sched-days {
  color: var(--muted); font-size: 12px;
  font-family: var(--font-mono); flex: 1;
}
.sched-actions { display: flex; gap: 6px; }
.empty-msg {
  padding: 24px 0; color: var(--muted);
  font-size: 13px; text-align: center;
}

/* ---------------- Modal ---------------- */
.modal {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(10, 10, 15, 0.5);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  animation: fade-in 0.15s ease-out;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.modal-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  width: 100%; max-width: 460px;
  max-height: 90vh; overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modal-up 0.22s cubic-bezier(0.2, 0.8, 0.3, 1);
}
@keyframes modal-up {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px;
}
.modal-head h3 { margin: 0; font-size: 14.5px; font-weight: 600; letter-spacing: -0.01em; }

/* Days selector */
.days { display: flex; flex-wrap: wrap; gap: 6px; }
.days label {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 7px 11px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px; cursor: pointer;
  background: var(--surface);
  transition: border-color 0.15s, background 0.15s, color 0.15s;
  user-select: none;
}
.days label:hover { border-color: var(--border-strong); }
.days label:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}
.days input[type="checkbox"] { accent-color: var(--accent); }

/* ---------------- Footer / toasts ---------------- */
.footer {
  text-align: center; color: var(--muted);
  font-size: 11px; line-height: 1.7;
  padding: 22px 12px 26px;
}
.toasts {
  position: fixed; top: 18px; right: 18px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 200; max-width: 340px;
}
.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 7px;
  padding: 11px 15px;
  font-size: 13px;
  box-shadow: var(--shadow-md);
  animation: toast-in 0.22s cubic-bezier(0.2, 0.8, 0.3, 1);
}
.toast.success { border-left-color: var(--success); }
.toast.warning { border-left-color: var(--warning); }
.toast.error   { border-left-color: var(--danger); }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(12px); }
  to   { opacity: 1; transform: translateX(0); }
}

.hint { color: var(--muted); font-size: 12px; margin: 10px 0 0; }

/* Scrollbar polish */
.activity-list::-webkit-scrollbar,
.modal-panel::-webkit-scrollbar { width: 8px; }
.activity-list::-webkit-scrollbar-thumb,
.modal-panel::-webkit-scrollbar-thumb {
  background: var(--border-strong); border-radius: 4px;
}
/* ============================================================
   Round 2 polish
   ============================================================ */

/* Input with action button (eye toggle) */
.input-with-action {
  position: relative;
  display: flex;
  align-items: stretch;
}
.input-with-action input {
  padding-right: 42px;
}
.input-with-action input::placeholder {
  color: var(--muted);
  opacity: 0.6;
  font-family: var(--font-sans);
}
.eye-btn {
  position: absolute;
  top: 50%; right: 6px;
  transform: translateY(-50%);
  width: 30px; height: 30px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent;
  color: var(--muted);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
}
.eye-btn:hover { color: var(--accent); background: var(--accent-soft); }
.eye-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.eye-btn .icon-eye,
.eye-btn .icon-eye-off { transition: opacity 0.15s, transform 0.15s; }
.eye-btn .icon-eye { display: none; }
.eye-btn.showing .icon-eye { display: block; }
.eye-btn.showing .icon-eye-off { display: none; }

/* Copy row under MQTT card */
.copy-row { display: flex; gap: 8px; margin-top: 14px; }
.copy-row .ghost-btn {
  display: inline-flex; align-items: center; gap: 7px;
}

/* Session progress bar */
.progress-track {
  height: 4px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  margin-top: 12px;
  overflow: hidden;
  position: relative;
}
.progress-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent));
  border-radius: 999px;
  transition: width 0.9s linear, background 0.3s;
}
.progress-fill.low  { background: var(--warning); }
.progress-fill.crit { background: var(--danger); }

/* Footer refinement */
.footer-divider {
  width: 40px;
  height: 1px;
  background: var(--border-strong);
  margin: 0 auto 14px;
}
.footer-line { }
.footer-line.dim { color: var(--muted); opacity: 0.75; }

/* Brand mark subtle animation */
.brand-mark {
  transition: transform 0.25s ease, box-shadow 0.25s;
}
.brand:hover .brand-mark {
  transform: rotate(-6deg) scale(1.04);
  box-shadow: 0 4px 12px rgba(13,148,136,0.25);
}

/* Login card entrance */
.login-card {
  animation: card-in 0.35s cubic-bezier(0.2, 0.8, 0.3, 1);
}
@keyframes card-in {
  from { opacity: 0; transform: translateY(10px) scale(0.99); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Page transitions */
.page { animation: page-in 0.22s ease-out; }
@keyframes page-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Better focus rings */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
button:focus-visible,
input:focus-visible {
  outline-offset: 2px;
}

/* Text selection */
::selection {
  background: var(--accent);
  color: var(--accent-fg);
}

/* Smooth scroll */
html { scroll-behavior: smooth; }

/* Better KV values with copy affordance */
.kv dd {
  transition: color 0.15s;
}
.kv > div:hover dd {
  color: var(--text);
}

/* Activity list better scroll */
.activity-list {
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

/* Chip icon-only variant */
.chip .dot { transition: box-shadow 0.2s; }

/* Empty state icon */
.empty-msg {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 28px 0;
}
.empty-msg svg { opacity: 0.4; }

/* Modal footer padding */
.modal-panel .btn-row { margin-top: 18px; }

/* Toast border refinement */
.toast {
  border-left-width: 3px;
  border-left-style: solid;
}

/* Small improvement: tab hover has small indicator */
.tab:not(.active):hover::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -1px;
  transform: translateX(-50%);
  width: 12px; height: 2px;
  background: var(--border-strong);
  border-radius: 2px 2px 0 0;
}

/* Card head buttons align */
.card-head button { flex: 0 0 auto; }

/* Better danger-zone styling */
.danger-zone { border-color: rgba(220,38,38,0.25); }
.danger-zone:hover { border-color: rgba(220,38,38,0.4); }

/* Session progress helper text spacing */
.progress-track + .btn-row { margin-top: 16px; }