:root {
  --bg: #eef2f4; --surface: #f9fbfb; --ink: #10222c; --muted: #65727a;
  --accent: #0876f9; --accent-dark: #075fc5; --accent-soft: #dcebff;
  --line: #d7dfe3; --green: #14a270; --radius: 22px; --shadow: 0 18px 50px rgba(17, 39, 52, .08);
  --sans: "IBM Plex Sans Thai", system-ui, sans-serif; --display: "Manrope", var(--sans);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); min-height: 100vh; }
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(16,34,44,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(16,34,44,.025) 1px, transparent 1px); background-size: 32px 32px; mask-image: linear-gradient(to bottom, #000, transparent 75%); }
button, input { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible { outline: 3px solid rgba(8,118,249,.35); outline-offset: 3px; }
.topbar { height: 76px; display: flex; align-items: center; justify-content: space-between; padding: 0 max(24px, calc((100vw - 1240px)/2)); background: rgba(249,251,251,.84); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); position: sticky; top: 0; z-index: 20; }
.brand { display: flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; font: 700 14px/1 var(--display); letter-spacing: .12em; }
.brand-mark { width: 32px; height: 32px; display: grid; place-items: center; background: var(--ink); color: #f5fafb; border-radius: 10px 10px 10px 3px; }
.brand-mark svg { width: 18px; fill: currentColor; }
.top-actions { display: flex; align-items: center; gap: 12px; }.connection { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }.connection i { width: 7px; height: 7px; border-radius: 50%; background: #f0a329; box-shadow: 0 0 0 4px rgba(240,163,41,.13); }
.icon-button, .avatar { width: 42px; height: 42px; border: 1px solid var(--line); background: var(--surface); display: grid; place-items: center; border-radius: 13px; color: var(--ink); }.icon-button svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }.avatar { background: var(--ink); color: #f3f8fa; border: 0; font: 700 12px var(--display); }
main { max-width: 1240px; margin: 0 auto; padding: 64px 24px 80px; position: relative; }
.hero { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 36px; }.eyebrow { margin: 0 0 8px; color: var(--accent); font: 700 11px/1 var(--display); letter-spacing: .16em; }.hero h1 { margin: 0; font: 600 clamp(42px, 6vw, 72px)/1.05 var(--sans); letter-spacing: -.05em; }.hero h1 span { color: var(--accent); }.device-line { display: flex; align-items: center; gap: 8px; color: var(--muted); margin-top: 16px; font-size: 14px; }.device-line strong { color: var(--ink); }.pulse { width: 9px; height: 9px; background: var(--green); border-radius: 50%; box-shadow: 0 0 0 0 rgba(20,162,112,.35); animation: pulse 2s infinite; }
.sync-button, .save-button { border: 0; min-height: 48px; padding: 0 20px; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; background: var(--accent); color: #f7fbff; font-weight: 600; box-shadow: 0 8px 20px rgba(8,118,249,.22); transition: .2s ease; }.sync-button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }.sync-button:hover, .save-button:hover { background: var(--accent-dark); transform: translateY(-2px); }.sync-button:active, .save-button:active { transform: scale(.98); }
.metric-strip { display: grid; grid-template-columns: 1.25fr repeat(3, 1fr); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; margin-bottom: 22px; }.metric-strip article { min-height: 180px; padding: 27px; border-left: 1px solid var(--line); display: flex; flex-direction: column; }.metric-strip article:first-child { border-left: 0; background: var(--ink); color: #f3f8fa; }.metric-strip article > span { color: var(--muted); font-size: 13px; }.metric-strip .primary-metric > span { color: #94a9b4; }.metric-strip strong { margin-top: auto; font: 600 40px/1 var(--display); letter-spacing: -.05em; }.metric-strip strong b { font: inherit; }.metric-strip strong small { font-size: 14px; letter-spacing: 0; margin-left: 7px; color: var(--muted); }.metric-strip .primary-metric strong small { color: #8da4b0; }.metric-strip em { color: var(--muted); font-size: 12px; font-style: normal; margin-top: 9px; }.power-track { height: 4px; background: #2b424e; margin-top: 22px; border-radius: 9px; overflow: hidden; }.power-track i { display: block; width: 0; height: 100%; background: var(--accent); border-radius: inherit; transition: width .8s ease; }
.electrical dl { margin: auto 0 0; }.electrical dl div { display: flex; justify-content: space-between; padding: 5px 0; font-size: 13px; }.electrical dt { color: var(--muted); }.electrical dd { margin: 0; font: 600 13px var(--display); }
.content-grid { display: grid; grid-template-columns: minmax(0, 2.1fr) minmax(270px, .9fr); gap: 22px; margin-bottom: 22px; }.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }.energy-panel, .meter-panel, .sessions-panel { padding: 28px; }.panel-header { display: flex; align-items: start; justify-content: space-between; gap: 20px; }.panel h2 { margin: 0; font: 600 21px var(--sans); letter-spacing: -.02em; }.period-tabs { display: flex; padding: 3px; background: var(--bg); border-radius: 10px; }.period-tabs button { border: 0; background: transparent; color: var(--muted); padding: 7px 13px; border-radius: 8px; font-size: 12px; }.period-tabs button.active { background: var(--surface); color: var(--ink); box-shadow: 0 3px 9px rgba(16,34,44,.08); font-weight: 600; }.chart-summary { display: flex; align-items: center; gap: 9px; margin-top: 22px; }.chart-summary strong { font: 600 32px var(--display); letter-spacing: -.04em; }.chart-summary span { color: var(--muted); font-size: 11px; line-height: 1.1; }.chart-summary small { color: #9aa5aa; }
.chart { position: relative; height: 240px; margin: 8px 0 0 30px; border-bottom: 1px solid var(--line); }.gridline { position: absolute; left: 0; right: 0; top: var(--y); border-top: 1px dashed #dbe2e5; }.gridline > span { position: absolute; left: -30px; top: -8px; color: #9aa5aa; font: 10px var(--display); }.bars { position: absolute; inset: 0; display: grid; grid-template-columns: repeat(12, 1fr); gap: 8px; align-items: end; }.bars i { height: var(--h); min-height: 1px; background: var(--accent-soft); border-top: 2px solid var(--accent); border-radius: 5px 5px 0 0; position: relative; transition: filter .2s; }.bars i:hover { filter: brightness(.92); }.bars i b { position: absolute; top: -22px; left: 50%; transform: translateX(-50%); background: var(--ink); color: #f4f9fa; border-radius: 5px; padding: 3px 5px; font: 9px var(--display); }.bars i span { position: absolute; bottom: -22px; left: 50%; transform: translateX(-50%); color: #8a969c; font: 9px var(--display); }
.meter-panel { display: flex; flex-direction: column; }.meter-ring { width: 184px; height: 184px; border-radius: 50%; margin: 25px auto; display: grid; place-items: center; background: conic-gradient(var(--accent) 0 72%, #dce4e8 72%); position: relative; }.meter-ring::before { content: ""; position: absolute; inset: 11px; border-radius: inherit; background: var(--surface); }.meter-ring > div { position: relative; text-align: center; }.meter-ring strong { display: block; font: 600 29px var(--display); letter-spacing: -.04em; }.meter-ring span { color: var(--muted); font-size: 12px; }.meter-meta { display: flex; justify-content: space-between; align-items: center; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }.meter-meta strong { color: var(--green); }.meter-meta i { display: inline-block; width: 6px; height: 6px; background: var(--green); border-radius: 50%; margin-right: 5px; }.meter-note { color: var(--muted); font-size: 12px; line-height: 1.65; margin: 18px 0 0; }
.sessions-panel { padding-bottom: 12px; }.text-button { border: 0; background: transparent; color: var(--accent); font-weight: 600; }.session-head, .session-row { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 14px; align-items: center; }.session-head { color: #87949a; font-size: 10px; text-transform: uppercase; letter-spacing: .08em; padding: 22px 16px 10px; }.session-row { min-height: 72px; padding: 12px 16px; border-top: 1px solid var(--line); font-size: 13px; }.session-row .date { display: flex; align-items: center; gap: 12px; }.session-row .date i { width: 35px; height: 35px; display: grid; place-items: center; border-radius: 11px; background: var(--accent-soft); color: var(--accent); font-style: normal; font-weight: 700; }.session-row strong { font: 600 13px var(--display); }.session-row .cost { color: var(--accent); }.empty { color: var(--muted); padding: 30px 16px; }
dialog { width: min(92vw, 480px); border: 1px solid var(--line); border-radius: 24px; background: var(--surface); color: var(--ink); padding: 0; box-shadow: 0 32px 100px rgba(10,30,40,.25); }dialog::backdrop { background: rgba(8,23,31,.48); backdrop-filter: blur(5px); }#settings-form { padding: 28px; }#settings-form header { display: flex; justify-content: space-between; margin-bottom: 26px; }#settings-form label { display: grid; gap: 8px; margin: 18px 0; color: var(--muted); font-size: 13px; }#settings-form input { width: 100%; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); color: var(--ink); padding: 13px 14px; }#settings-form p { background: var(--accent-soft); border-radius: 12px; color: #526775; font-size: 12px; line-height: 1.6; padding: 13px; }#settings-form code { color: var(--accent-dark); }.close { font-size: 23px; }.save-button { width: 100%; margin-top: 8px; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); background: var(--ink); color: #f2f7f8; padding: 11px 16px; border-radius: 11px; font-size: 13px; opacity: 0; pointer-events: none; transition: .25s; z-index: 50; }.toast.show { opacity: 1; transform: translate(-50%, 0); }
.reveal { opacity: 0; transform: translateY(15px); animation: rise .6s ease forwards; }.reveal:nth-child(2) { animation-delay: .08s; }.reveal:nth-child(3) { animation-delay: .16s; }.reveal:nth-child(4) { animation-delay: .24s; }
@keyframes rise { to { opacity: 1; transform: none; } }@keyframes pulse { 60% { box-shadow: 0 0 0 9px rgba(20,162,112,0); } }
@media (max-width: 900px) { .metric-strip { grid-template-columns: 1fr 1fr; }.metric-strip article:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }.metric-strip article:nth-child(4) { border-top: 1px solid var(--line); }.content-grid { grid-template-columns: 1fr; }.meter-panel { display: grid; grid-template-columns: 1fr 190px; }.meter-panel .meter-ring { grid-column: 2; grid-row: 1 / 5; }.meter-note { max-width: 300px; } }
@media (max-width: 600px) { .topbar { height: 66px; padding: 0 16px; }.connection { display: none; }main { padding: 38px 16px 56px; }.hero { align-items: start; }.hero h1 { font-size: 42px; }.sync-button { width: 48px; padding: 0; }.sync-button:not(:focus)::after { content: ""; }.sync-button { font-size: 0; }.metric-strip { grid-template-columns: 1fr; }.metric-strip article { min-height: 145px; border-left: 0; border-top: 1px solid var(--line); }.metric-strip article:first-child { border-top: 0; }.energy-panel, .meter-panel, .sessions-panel { padding: 22px 18px; }.meter-panel { display: flex; }.chart { height: 210px; margin-left: 25px; }.bars { gap: 4px; }.bars i b { display: none; }.session-head { display: none; }.session-row { grid-template-columns: 1.5fr 1fr; gap: 9px; padding: 15px 4px; }.session-row > :nth-child(2) { text-align: right; }.session-row > :nth-child(3) { padding-left: 47px; }.session-row > :nth-child(4) { text-align: right; }.panel-header { align-items: center; }.period-tabs button { padding: 7px 9px; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }