*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --card-bg: #1a1d27;
  --card-border: #2a2d3a;
  --text: #e4e6ed;
  --text-dim: #8b8fa3;
  --accent-bat: #22c55e;
  --accent-sol: #f59e0b;
  --accent-load: #3b82f6;
  --accent-soc: #c084fc;
  --error: #ef4444;
  --radius: 16px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  overscroll-behavior-y: contain;
}

.screen { min-height: 100dvh; }
.screen[hidden] { display: none !important; }
[hidden] { display: none !important; }

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

#setup-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.login-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 360px;
  text-align: center;
}

.login-icon { font-size: 2.5rem; margin-bottom: .5rem; }

.login-card h1 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: .25rem;
}

.login-subtitle {
  color: var(--text-dim);
  font-size: .85rem;
  margin-bottom: 1.5rem;
}

#setup-form { display: flex; flex-direction: column; gap: .75rem; }

#setup-form input {
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: .7rem 1rem;
  color: var(--text);
  font-size: .95rem;
  outline: none;
  transition: border-color .2s;
}

#setup-form input:focus { border-color: var(--accent-sol); }

#setup-btn, #add-submit, #manage-close {
  background: var(--accent-sol);
  color: #000;
  border: none;
  border-radius: 8px;
  padding: .75rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
}

#setup-btn:disabled, #add-submit:disabled { opacity: .5; cursor: wait; }

.error {
  color: var(--error);
  font-size: .85rem;
  margin-top: .75rem;
}

/* ---------- HEADER ---------- */

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem .5rem;
}

header h1 { font-size: 1.15rem; font-weight: 600; }

.header-right { display: flex; align-items: center; gap: .75rem; }

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot-ok  { background: var(--accent-bat); }
.dot-err { background: var(--error); }

#disconnect-btn, #manage-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.1rem;
  cursor: pointer;
}

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

.system-tabs {
  display: flex;
  gap: .35rem;
  padding: 0 1.25rem .5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.sys-tab {
  background: transparent;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-dim);
  padding: .45rem 1rem;
  font-size: .8rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: background .2s, color .2s;
}

.sys-tab:hover { color: var(--text); }

.sys-tab.active {
  background: var(--accent-sol);
  color: #000;
  border-color: var(--accent-sol);
  font-weight: 600;
}

/* ---------- INVERTER STATUS ---------- */

.inverter-status-row {
  text-align: center;
  margin-bottom: -.25rem;
}

.inverter-status {
  display: inline-block;
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .02em;
  padding: .4rem .85rem;
  border-radius: 6px;
  background: rgba(59, 130, 246, .12);
  color: var(--accent-load);
  max-width: 100%;
  line-height: 1.35;
}

.inverter-status.status-unavailable {
  background: rgba(139, 143, 163, .1);
  color: var(--text-dim);
}

.inverter-status.status-offline {
  background: rgba(239, 68, 68, .12);
  color: var(--error);
}

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

.cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: .75rem 1.25rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}

.card-header {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: .75rem;
}

.card-icon { font-size: 1.25rem; }
.card-title { font-size: .9rem; color: var(--text-dim); font-weight: 500; text-transform: uppercase; letter-spacing: .04em; }

.card-value {
  display: flex;
  align-items: baseline;
  gap: .15rem;
  margin-bottom: .6rem;
}

.big-number { font-size: 3rem; font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums; }
.unit { font-size: 1.2rem; color: var(--text-dim); font-weight: 500; }

.card-bar-wrap {
  height: 8px;
  background: var(--bg);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: .6rem;
}

.card-bar {
  height: 100%;
  border-radius: 4px;
  transition: width .6s ease;
}

.card-battery .card-bar { background: var(--accent-bat); }
.card-solar  .card-bar { background: var(--accent-sol); }
.card-load   .card-bar { background: var(--accent-load); }

.card-battery .big-number { color: var(--accent-bat); }
.card-solar   .big-number { color: var(--accent-sol); }
.card-load    .big-number { color: var(--accent-load); }

.bat-status {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: .45rem;
}

.bat-direction {
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.bat-rate {
  font-size: .7rem;
  font-weight: 600;
  padding: .15rem .45rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.bat-rate.rate-slow  { background: rgba(34,197,94,.15);  color: #22c55e; }
.bat-rate.rate-mid   { background: rgba(245,158,11,.15); color: #f59e0b; }
.bat-rate.rate-fast  { background: rgba(239,68,68,.15);  color: #ef4444; }

.bat-direction.dir-charging    { color: #22c55e; }
.bat-direction.dir-discharging { color: #f59e0b; }
.bat-direction.dir-idle        { color: var(--text-dim); }

.card-detail {
  font-size: .85rem;
  color: var(--text-dim);
}

.sep { margin: 0 .35rem; opacity: .4; }

/* ---------- GENERATOR CARD ---------- */

.card-gen { border-color: var(--card-border); }
.card-gen.gen-active { border-color: #a855f7; }

.gen-status-row { margin-bottom: .6rem; }

.gen-badge {
  display: inline-block;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: .15rem .6rem;
  border-radius: 6px;
}

.gen-on  { background: rgba(168,85,247,.15); color: #a855f7; }
.gen-off { background: rgba(139,143,163,.1);  color: var(--text-dim); }

/* ---------- VIEW TOGGLE ---------- */

.view-toggle {
  display: flex;
  gap: .4rem;
  padding: 0 1.25rem .6rem;
}

.vtab {
  background: transparent;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-dim);
  padding: .6rem 1.2rem;
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: background .2s, color .2s;
}

.vtab:hover { color: var(--text); }

.vtab.active {
  background: var(--card-border);
  color: var(--text);
}

/* ---------- CHART VIEW ---------- */

.chart-view {
  padding: .75rem 1.25rem;
  max-width: 580px;
  margin: 0 auto;
}
.chart-view[hidden] { display: none !important; }

.chart-date-nav {
  display: flex;
  align-items: stretch;
  gap: .35rem;
  margin-bottom: .65rem;
}

.chart-day-btn {
  flex: 0 0 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: border-color .2s, color .2s, opacity .2s;
}

.chart-day-btn:hover:not(:disabled) {
  border-color: var(--accent-sol);
  color: var(--accent-sol);
}

.chart-day-btn:disabled {
  opacity: .35;
  cursor: not-allowed;
}

.chart-week-strip {
  flex: 1;
  display: flex;
  gap: .25rem;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.chart-week-strip::-webkit-scrollbar {
  display: none;
}

.chart-day-pill {
  flex: 1 1 0;
  min-width: 2.4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .1rem;
  padding: .35rem .2rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-dim);
  font: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: background .2s, border-color .2s, color .2s, opacity .2s;
}

.chart-day-pill:hover:not(:disabled) {
  border-color: var(--accent-sol);
  color: var(--text);
}

.chart-day-pill.active {
  background: rgba(245, 158, 11, .15);
  border-color: var(--accent-sol);
  color: var(--text);
}

.chart-day-pill.is-today:not(.active) {
  border-color: rgba(245, 158, 11, .45);
}

.chart-day-pill:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.chart-day-wd {
  font-size: .65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .02em;
  line-height: 1.1;
}

.chart-day-num {
  font-size: .95rem;
  font-weight: 600;
  line-height: 1.1;
}

#chart-swipe-area {
  touch-action: pan-y pinch-zoom;
}

.chart-controls {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: .75rem;
  flex-wrap: wrap;
}

.chart-export-btn {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text-dim);
  padding: .45rem .85rem;
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: background .2s, color .2s, border-color .2s, opacity .2s;
}

.chart-export-btn:hover:not(:disabled) {
  color: var(--text);
  border-color: var(--accent-sol);
}

.chart-export-btn:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.chart-date-label {
  font-size: .85rem;
  color: var(--text-dim);
}

.chart-date-input {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: .45rem .65rem;
  color: var(--text);
  font-size: .9rem;
  outline: none;
}

.chart-date-input:focus { border-color: var(--accent-sol); }

.chart-wrap {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
}

#power-chart {
  display: block;
  width: 100%;
  height: auto;
}

.chart-empty,
.chart-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: .9rem;
  background: var(--card-bg);
}

.chart-empty {
  flex-direction: column;
  gap: .75rem;
  padding: 1rem;
  text-align: center;
}

.chart-empty-msg {
  margin: 0;
  max-width: 22rem;
  line-height: 1.45;
}

.chart-empty-error .chart-empty-msg {
  color: var(--accent-load);
}

.chart-retry-btn {
  padding: .45rem 1rem;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: .85rem;
  cursor: pointer;
}

.chart-retry-btn:hover {
  border-color: var(--accent-sol);
  color: var(--accent-sol);
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: .75rem;
  font-size: .8rem;
  color: var(--text-dim);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
}

.legend-swatch {
  width: 12px;
  height: 3px;
  border-radius: 2px;
}

.legend-solar { background: var(--accent-sol); }
.legend-load { background: var(--accent-load); }
.legend-battery { background: var(--accent-bat); }
.legend-soc { background: var(--accent-soc); }
.legend-soc-range {
  width: 3px;
  height: 12px;
  border-radius: 1px;
}

.soc-estimated-badge {
  margin-left: .35rem;
  padding: .1rem .35rem;
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--accent-soc);
  background: color-mix(in srgb, var(--accent-soc) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-soc) 35%, transparent);
  border-radius: 3px;
  line-height: 1.2;
}

.energy-summary-title {
  margin: 1.25rem 0 .65rem;
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
}

.energy-chart-wrap {
  min-height: 180px;
}

#energy-chart {
  display: block;
  width: 100%;
  height: auto;
}

.energy-legend {
  margin-top: .65rem;
}

/* ---------- FLOW VIEW ---------- */

.flow-view {
  padding: .75rem 1.25rem;
  max-width: 580px;
  margin: 0 auto;
}
.flow-view[hidden] { display: none !important; }

.flow-svg {
  width: 100%;
  height: auto;
}

.fn-bg {
  fill: var(--card-bg);
  stroke: var(--card-border);
  stroke-width: 1.5;
  transition: stroke .3s, stroke-width .3s;
}

.fn-inv-bg {
  fill: #1e2130;
  stroke-width: 1;
}

#fn-solar-bg.active { stroke: #f59e0b; stroke-width: 2.5; }
#fn-gen-bg.active   { stroke: #a855f7; stroke-width: 2.5; }
#fn-house-bg.active { stroke: #3b82f6; stroke-width: 2.5; }
#fn-bat-bg.charging    { stroke: #22c55e; stroke-width: 2.5; }
#fn-bat-bg.discharging { stroke: #f59e0b; stroke-width: 2.5; }
#fn-bat-bg.idle        { stroke: var(--card-border); }

.fn-icon {
  font-size: 22px;
  pointer-events: none;
}
.fn-icon-sm { font-size: 16px; }

.fn-val {
  font-size: 14px;
  fill: var(--text);
  font-weight: 700;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.fn-lbl {
  font-size: 10px;
  fill: var(--text-dim);
  font-weight: 600;
  letter-spacing: .06em;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.fn-detail {
  font-size: 10px;
  fill: var(--text-dim);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.fp {
  fill: none;
  stroke: var(--card-border);
  stroke-width: 2.5;
  stroke-linecap: round;
  opacity: 0.15;
  transition: opacity .3s;
}

.fp.active {
  stroke-width: 3;
  stroke-dasharray: 8 6;
  opacity: 1;
  animation: dash-flow .7s linear infinite;
}

@keyframes dash-flow {
  from { stroke-dashoffset: 14; }
  to   { stroke-dashoffset: 0; }
}

#fp-solar.active            { stroke: #f59e0b; }
#fp-gen.active              { stroke: #a855f7; }
#fp-load.active             { stroke: #3b82f6; }
#fp-bat.active.charging     { stroke: #22c55e; }
#fp-bat.active.discharging  { stroke: #f59e0b; }

.fl {
  font-size: 12px;
  fill: var(--text-dim);
  font-weight: 600;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  opacity: 0;
  transition: opacity .3s;
}
.fl.active { opacity: 1; }

/* ---------- MODALS ---------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
}

.modal-overlay[hidden] { display: none !important; }

.modal {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 2rem;
  width: 100%;
  max-width: 400px;
}

.modal h2 {
  font-size: 1.2rem;
  margin-bottom: 1.25rem;
}

.modal label {
  display: block;
  font-size: .8rem;
  color: var(--text-dim);
  margin-bottom: .3rem;
  margin-top: .75rem;
}

.modal label:first-of-type { margin-top: 0; }

.modal input, .modal select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: .6rem .9rem;
  color: var(--text);
  font-size: .9rem;
  outline: none;
}

.modal input:focus, .modal select:focus { border-color: var(--accent-sol); }

.modal select { appearance: none; cursor: pointer; }

.modal-actions {
  display: flex;
  gap: .75rem;
  margin-top: 1.5rem;
}

.modal-actions button {
  flex: 1;
  padding: .65rem;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-dim);
}

/* ---------- MANAGE LIST ---------- */

.manage-list { max-height: 70vh; overflow-y: auto; }

.modal-wide {
  max-width: 520px;
  width: calc(100% - 2rem);
}

.manage-row {
  padding: .75rem 0;
  border-bottom: 1px solid var(--card-border);
}

.manage-row-expanded {
  display: block;
}

.manage-row-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: .75rem;
}

.manage-row:last-child { border-bottom: none; }

.manage-info strong {
  display: block;
  font-size: .9rem;
}

.manage-service {
  font-size: .75rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.manage-delete {
  background: transparent;
  border: 1px solid var(--error);
  color: var(--error);
  border-radius: 6px;
  padding: .35rem .7rem;
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
}

.manage-empty {
  color: var(--text-dim);
  font-size: .85rem;
  text-align: center;
  padding: 1.5rem 0;
}

.alert-badge {
  display: inline-block;
  margin-left: .5rem;
  padding: .1rem .4rem;
  border-radius: 4px;
  font-size: .65rem;
  font-weight: 600;
  text-transform: none;
  color: var(--accent-bat);
  background: rgba(34, 197, 94, .15);
}

.manage-alerts {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  padding: .75rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid var(--card-border);
}

.manage-alerts label {
  font-size: .75rem;
  color: var(--text-dim);
}

.manage-alerts input[type="url"],
.manage-alerts input[type="number"] {
  width: 100%;
  padding: .5rem .65rem;
  border-radius: 6px;
  border: 1px solid var(--card-border);
  background: var(--bg);
  color: var(--text);
  font-size: .85rem;
}

.alert-toggle {
  display: flex;
  align-items: center;
  gap: .5rem;
  color: var(--text);
  font-weight: 600;
}

.alert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .5rem;
}

.alert-checks {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.alert-checks label {
  display: flex;
  align-items: center;
  gap: .35rem;
  color: var(--text);
}

.alert-save {
  margin-top: .25rem;
  padding: .55rem;
  border: none;
  border-radius: 8px;
  background: var(--accent-sol);
  color: #111;
  font-weight: 600;
  font-size: .85rem;
  cursor: pointer;
}

.alert-save:disabled {
  opacity: .6;
  cursor: not-allowed;
}

.alert-msg {
  font-size: .75rem;
  margin: 0;
}

.alert-ok { color: var(--accent-bat); }
.alert-err { color: var(--error); }

/* ---------- FOOTER ---------- */

footer {
  display: flex;
  justify-content: space-between;
  padding: .5rem 1.25rem 1.5rem;
  font-size: .75rem;
  color: var(--text-dim);
}

/* ---------- PULL TO REFRESH ---------- */

.ptr {
  display: flex;
  justify-content: center;
  overflow: hidden;
  height: 0;
  transition: height .2s ease;
}

.ptr-arrow {
  font-size: 1.4rem;
  color: var(--text-dim);
  padding: .4rem 0;
  transition: transform .2s ease, opacity .2s ease;
  opacity: .5;
}

.ptr.pulling .ptr-arrow {
  opacity: 1;
}

.ptr.armed .ptr-arrow {
  transform: rotate(180deg);
  opacity: 1;
  color: var(--accent-sol);
}

.ptr.refreshing .ptr-arrow {
  animation: ptr-spin .6s linear infinite;
  opacity: 1;
  color: var(--accent-sol);
}

@keyframes ptr-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* ---------- SKELETON / LOADING ---------- */

.skeleton {
  position: relative;
  color: transparent !important;
  overflow: hidden;
  border-radius: 4px;
  background: var(--card-border);
}

.skeleton::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255,255,255,.06) 40%,
    rgba(255,255,255,.06) 60%,
    transparent 100%
  );
  animation: shimmer 1.4s ease-in-out infinite;
}

.skeleton * { visibility: hidden; }

@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.big-number.skeleton {
  min-width: 3ch;
  min-height: 1em;
  display: inline-block;
}

.bat-direction.skeleton,
.bat-rate.skeleton {
  min-width: 5ch;
  min-height: 1em;
  display: inline-block;
}

.card-detail .skeleton {
  min-width: 3ch;
  min-height: 1em;
  display: inline-block;
}

.gen-badge.skeleton {
  min-width: 3ch;
  min-height: 1em;
}

.card-bar-wrap.skeleton {
  border-radius: 4px;
}

.fn-val.skeleton-flow {
  fill: transparent;
}

.fn-detail.skeleton-flow {
  fill: transparent;
}

/* ---------- TABLET + ---------- */

@media (min-width: 640px) {
  .cards {
    flex-wrap: wrap;
    flex-direction: row;
    max-width: 960px;
    margin: 0 auto;
  }
  .card { flex: 1 1 calc(50% - .5rem); min-width: 200px; }
}

@media (min-width: 960px) {
  .card { flex: 1 1 0; min-width: 0; }
}