/* Risesun Meter Monitor */

:root {
    /* Neutrals (cool slate) */
    --bg: #f1f4f7;
    --bg-top: #f8fafc;
    --surface: #ffffff;
    --surface-2: #f7f9fb;
    --surface-3: #eef2f6;
    --line: #e3e8ee;
    --line-strong: #cfd7e0;
    --line-hover: #b3bfcb;
    --text: #0f1c2b;
    --text-2: #334355;
    --muted: #5b6b7c;
    --faint: #6f7e8f;
    --subtle: #98a4b2;

    /* Accent (petrol teal) */
    --accent: #0a6f76;
    --accent-700: #075a60;
    --accent-100: #cfe8e9;
    --accent-50: #eaf5f5;
    --accent-25: #f4fafa;

    /* Signals */
    --signal: #e5a000;
    --signal-600: #b77e00;
    --signal-50: #fff6de;
    --signal-text: #6f4d00;
    --success: #14a35a;
    --danger: #c8372d;
    --danger-50: #fdeeec;

    /* Type */
    --font: "Instrument Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
    --mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
    --fs-2xs: .6875rem;  /* 11 */
    --fs-xs: .75rem;     /* 12 */
    --fs-sm: .8125rem;   /* 13 */
    --fs-base: .9375rem; /* 15 */
    --fs-md: 1rem;       /* 16 */
    --fs-lg: 1.125rem;   /* 18 */
    --fs-xl: 1.25rem;    /* 20 */

    /* Spacing (4px base) */
    --s-1: .25rem;
    --s-2: .5rem;
    --s-3: .75rem;
    --s-4: 1rem;
    --s-5: 1.25rem;
    --s-6: 1.5rem;
    --s-8: 2rem;
    --s-10: 2.5rem;

    /* Shape */
    --r-xs: 6px;
    --r-sm: 8px;
    --r-md: 10px;
    --r-lg: 14px;
    --shadow-xs: 0 1px 2px rgba(15, 28, 43, .05);
    --shadow-sm: 0 1px 3px rgba(15, 28, 43, .06);
    --shadow-pop: 0 6px 16px rgba(15, 28, 43, .10);
    --ring: 0 0 0 3px var(--accent-100);

    --control-h: 44px;
    --wrap: min(1200px, 100% - 2rem);
}

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

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

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font);
    font-size: var(--fs-base);
    line-height: 1.55;
    color: var(--text);
    background:
        radial-gradient(1100px 420px at 8% -140px, rgba(10, 111, 118, .075), transparent 70%),
        radial-gradient(800px 360px at 100% -120px, rgba(229, 160, 0, .045), transparent 70%),
        linear-gradient(180deg, var(--bg-top) 0, var(--bg) 420px) no-repeat,
        var(--bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
body::before {
    content: "";
    position: absolute; inset: 0 0 auto 0; height: 340px; z-index: -1;
    pointer-events: none;
    background-image: radial-gradient(rgba(15, 28, 43, .075) 1px, transparent 1.2px);
    background-size: 22px 22px;
    -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent);
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent);
}

h1, h2 { margin: 0; line-height: 1.2; font-weight: 600; letter-spacing: -.015em; }
p { margin: 0; }
button, input, select { font: inherit; color: inherit; }
code, abbr { font-family: var(--mono); font-size: .9em; }
abbr[title] { text-decoration: none; }

.wrap { width: var(--wrap); margin-inline: auto; }

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Top progress ---------- */
.progress {
    position: fixed; inset: 0 0 auto 0; height: 2px; z-index: 40;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    background-size: 40% 100%; background-repeat: no-repeat;
    opacity: 0; transition: opacity .2s;
}
.progress.is-active { opacity: 1; animation: progress 1.1s linear infinite; }
@keyframes progress { from { background-position: -40% 0; } to { background-position: 140% 0; } }

/* ---------- Header ---------- */
.topbar { padding: var(--s-5) 0 var(--s-4); }

.topbar-inner {
    display: flex; flex-wrap: wrap; align-items: center;
    justify-content: space-between; gap: var(--s-4) var(--s-6);
}

.brand { display: flex; align-items: center; gap: var(--s-3); min-width: 0; }
.brand-tile {
    display: grid; place-items: center; flex: none;
    width: 44px; height: 44px; border-radius: var(--r-md);
    background: var(--surface); border: 1px solid var(--line);
    box-shadow: var(--shadow-xs); color: var(--accent);
}
.brand-mark { width: 30px; height: 30px; }
.brand-text { min-width: 0; }
.brand h1 { font-size: var(--fs-lg); font-weight: 650; color: var(--text); }
.brand p { margin-top: 2px; font-size: var(--fs-sm); color: var(--muted); }
.brand p abbr { font-size: var(--fs-xs); color: var(--faint); letter-spacing: .01em; }
.dot-sep {
    display: inline-block; width: 3px; height: 3px; margin: 0 var(--s-2); border-radius: 50%;
    background: var(--subtle); vertical-align: middle;
}

.live {
    display: flex; align-items: center; gap: var(--s-3);
    width: 100%; padding: var(--s-1) var(--s-1) var(--s-1) var(--s-4);
    background: var(--surface); border: 1px solid var(--line);
    border-radius: var(--r-lg); box-shadow: var(--shadow-xs);
}
.live-text { display: grid; line-height: 1.3; min-width: 0; margin-right: auto; }
.live-text strong { font-size: var(--fs-sm); font-weight: 600; color: var(--text); }
.live-text span {
    font-size: var(--fs-xs); color: var(--muted); font-variant-numeric: tabular-nums;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.live-sep { width: 1px; height: 24px; background: var(--line); flex: none; }

.live-dot {
    position: relative; width: 8px; height: 8px; border-radius: 50%; flex: none;
    background: var(--subtle); box-shadow: 0 0 0 3px var(--surface-3);
}
.live[data-state="live"] .live-dot { background: var(--success); box-shadow: 0 0 0 3px #dcf5e7; animation: pulse 2.4s infinite; }
.live[data-state="paused"] .live-dot { background: var(--signal); box-shadow: 0 0 0 3px var(--signal-50); }
.live[data-state="error"] .live-dot { background: var(--danger); box-shadow: 0 0 0 3px var(--danger-50); }
.live[data-state="error"] .live-text strong { color: var(--danger); }
@keyframes pulse {
    0%   { box-shadow: 0 0 0 3px #dcf5e7, 0 0 0 3px rgba(20, 163, 90, .35); }
    70%  { box-shadow: 0 0 0 3px #dcf5e7, 0 0 0 9px rgba(20, 163, 90, 0); }
    100% { box-shadow: 0 0 0 3px #dcf5e7, 0 0 0 9px rgba(20, 163, 90, 0); }
}

.switch {
    display: inline-flex; align-items: center; gap: var(--s-2);
    min-height: var(--control-h); padding-inline: var(--s-1);
    font-size: var(--fs-sm); font-weight: 500; color: var(--text-2); cursor: pointer;
}
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch-track {
    position: relative; width: 34px; height: 20px; border-radius: 10px;
    background: #8e9aa8; transition: background .2s;
}
.switch-track::after {
    content: ""; position: absolute; top: 2px; left: 2px;
    width: 16px; height: 16px; border-radius: 50%; background: #fff;
    box-shadow: 0 1px 2px rgba(15, 28, 43, .25);
    transition: transform .2s;
}
.switch:hover .switch-track { background: #7a8796; }
.switch input:checked + .switch-track { background: var(--accent); }
.switch:hover input:checked + .switch-track { background: var(--accent-700); }
.switch input:checked + .switch-track::after { transform: translateX(14px); }
.switch input:focus-visible + .switch-track { outline: 2px solid var(--accent); outline-offset: 2px; }

.icon-btn {
    display: inline-grid; place-items: center; flex: none;
    width: var(--control-h); height: var(--control-h);
    border: 1px solid transparent; border-radius: var(--r-md);
    background: transparent; color: var(--text-2); cursor: pointer;
    transition: background .15s, color .15s, border-color .15s;
}
.icon-btn:hover { background: var(--surface-3); color: var(--text); }
.icon-btn:active { background: var(--accent-50); color: var(--accent-700); }
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn.is-spinning { color: var(--accent); }
.icon-btn.is-spinning svg { animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Panel ---------- */
.main { padding: var(--s-2) 0 var(--s-8); }

.panel {
    min-width: 0;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-sm);
    overflow: clip;
}
.panel-head {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
    gap: var(--s-4) var(--s-6); padding: var(--s-5) var(--s-4) var(--s-4);
}
.panel-title { min-width: 0; }
.panel-head h2 { font-size: var(--fs-lg); color: var(--text); }
.panel-sub {
    margin-top: var(--s-1); font-size: var(--fs-sm); color: var(--muted);
    font-variant-numeric: tabular-nums;
}

/* Toolbar */
.toolbar {
    display: grid; width: 100%; gap: var(--s-2);
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-areas: "search search" "meter rows" "sort export";
}
.tool--search { grid-area: search; }
.tool--meter { grid-area: meter; }
.tool--rows { grid-area: rows; }
.tool--sort { grid-area: sort; }
.tool--export { grid-area: export; }

.tool { position: relative; display: block; min-width: 0; }
.tool input, .tool select {
    width: 100%; height: var(--control-h); padding: 0 var(--s-3);
    background: var(--surface); color: var(--text);
    border: 1px solid var(--line-strong); border-radius: var(--r-md);
    font-size: var(--fs-base); box-shadow: var(--shadow-xs);
    transition: border-color .15s, box-shadow .15s;
}
.tool select {
    appearance: none; padding-right: 2.25rem; cursor: pointer; text-overflow: ellipsis;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='m6 8 4 4 4-4' fill='none' stroke='%235b6b7c' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right .65rem center; background-size: 18px;
}
.tool input::placeholder { color: var(--faint); opacity: 1; }
.tool input:hover, .tool select:hover { border-color: var(--line-hover); }
.tool input:focus, .tool select:focus {
    outline: none; border-color: var(--accent); box-shadow: var(--ring);
}

.tool--search .affix {
    position: absolute; top: 0; bottom: 0; display: flex; align-items: center;
    font-family: var(--mono); font-size: var(--fs-sm); font-weight: 500;
    color: var(--faint); pointer-events: none;
}
.affix--pre {
    left: 1px; padding: 0 var(--s-2) 0 var(--s-3); margin: 7px 0;
    border-right: 1px solid var(--line);
}
.affix--post { right: 2.75rem; }
.tool--search input {
    padding-left: 3.6rem; padding-right: 4.25rem;
    font-family: var(--mono); font-size: var(--fs-sm); font-weight: 500; letter-spacing: .06em;
}
.tool--search input::placeholder { font-family: var(--font); font-size: var(--fs-base); font-weight: 400; letter-spacing: 0; }
.tool--search input[aria-invalid="true"] { border-color: var(--signal); box-shadow: 0 0 0 3px var(--signal-50); }
.tool-clear {
    position: absolute; right: 5px; top: 50%; transform: translateY(-50%);
    display: grid; place-items: center; width: 34px; height: 34px;
    border: 0; border-radius: var(--r-xs); background: transparent; color: var(--faint); cursor: pointer;
    transition: background .15s, color .15s;
}
.tool-clear:hover { background: var(--surface-3); color: var(--text); }
.tool-clear[hidden] { display: none; }
.tool-clear svg { width: 16px; height: 16px; }
.tool-hint {
    position: absolute; left: 0; top: calc(100% + 6px); z-index: 3;
    max-width: 100%; padding: var(--s-1) var(--s-3);
    border: 1px solid #f0d58f; border-radius: var(--r-sm);
    background: var(--signal-50); color: var(--signal-text);
    font-size: var(--fs-xs); font-weight: 500; line-height: 1.45;
    box-shadow: var(--shadow-pop);
}
.tool-hint[hidden] { display: none; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
    min-height: var(--control-h); padding: 0 var(--s-4); border-radius: var(--r-md);
    font-size: var(--fs-base); font-weight: 600; line-height: 1; text-decoration: none;
    white-space: nowrap; cursor: pointer;
    border: 1px solid transparent;
    transition: background .15s, border-color .15s, color .15s, box-shadow .15s;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary, .btn-secondary {
    background: var(--accent); border-color: var(--accent-700); color: #fff;
    box-shadow: var(--shadow-xs), inset 0 1px 0 rgba(255, 255, 255, .12);
}
.btn-primary:hover, .btn-secondary:hover { background: var(--accent-700); }
.btn-primary:active, .btn-secondary:active { background: #064b50; }
.btn-ghost {
    background: var(--surface); color: var(--text-2); border-color: var(--line-strong);
    box-shadow: var(--shadow-xs);
}
.btn-ghost:hover { color: var(--text); border-color: var(--line-hover); background: var(--surface-2); }

/* ---------- Table ---------- */
.table-wrap { border-top: 1px solid var(--line); }

.data-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.data-table thead { display: none; }
.data-table tbody tr:not(.state-row) {
    display: grid; grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "meter value" "time value";
    gap: 2px var(--s-4); align-items: center;
    padding: var(--s-3) var(--s-4); border-bottom: 1px solid var(--line);
}
.data-table tbody tr:not(.state-row):last-child { border-bottom: 0; }
.data-table td { padding: 0; }
.data-table td[data-col="read_at"] { grid-area: time; font-size: var(--fs-sm); color: var(--muted); }
.data-table td[data-col="meter_id"] { grid-area: meter; min-width: 0; }
.data-table td[data-col="value"] { grid-area: value; text-align: right; }

.t-date { margin-right: var(--s-2); }
.t-time { font-family: var(--mono); font-size: .95em; color: var(--text-2); }
.t-time small { font-size: .88em; color: var(--faint); }

.meter-link {
    padding: 0; border: 0; background: none; cursor: pointer;
    font-family: var(--mono); font-size: var(--fs-sm); font-weight: 600; letter-spacing: .02em;
    color: var(--text);
    text-decoration: underline; text-decoration-color: transparent;
    text-decoration-thickness: 1px; text-underline-offset: 4px;
    transition: text-decoration-color .15s, color .15s;
    max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.meter-link:hover { color: var(--accent-700); text-decoration-color: currentColor; }
.meter-link:focus-visible { border-radius: 3px; }
.meter-link mark {
    padding: 1px 2px; margin: 0 -1px; border-radius: 4px;
    background: var(--accent-50); color: var(--accent-700);
    box-shadow: inset 0 -2px 0 var(--accent-100);
}

.reading {
    font-family: var(--mono); font-size: var(--fs-base); font-weight: 500;
    color: var(--text); white-space: nowrap;
}
.reading .unit {
    margin-left: 6px; font-family: var(--font); font-size: var(--fs-xs); font-weight: 500;
    color: var(--faint); letter-spacing: .02em;
}
.reading.is-zero, .reading.is-null { color: var(--subtle); }
.reading.is-zero .unit { color: var(--subtle); }

@keyframes rowflash { from { background: var(--signal-50); } to { background: transparent; } }
.data-table tr.is-new, .data-table tr.is-new td { animation: rowflash 2.6s ease-out; }

/* Empty / error states */
.state-row td { padding: var(--s-10) var(--s-4) 3rem; text-align: center; }
.state { display: grid; justify-items: center; gap: var(--s-2); max-width: 380px; margin: 0 auto; }
.state svg {
    width: 48px; height: 48px; padding: 12px; margin-bottom: var(--s-2);
    border-radius: var(--r-lg); border: 1px solid var(--line);
    background: var(--surface-2); color: var(--muted);
}
.state strong { font-size: var(--fs-md); font-weight: 600; color: var(--text); }
.state p { font-size: var(--fs-sm); color: var(--muted); line-height: 1.55; }
.state .btn { margin-top: var(--s-3); }
.state--error svg { background: var(--danger-50); border-color: #f6cfca; color: var(--danger); }

/* Pager */
.pager {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: var(--s-1);
    padding: var(--s-3) var(--s-4); border-top: 1px solid var(--line); background: var(--surface-2);
}
.pager:empty { display: none; }
.pager button {
    display: inline-grid; place-items: center;
    min-width: var(--control-h); height: var(--control-h); padding: 0 var(--s-2);
    border: 1px solid var(--line-strong); border-radius: var(--r-md);
    background: var(--surface); color: var(--text-2);
    font-family: var(--mono); font-size: var(--fs-sm); font-weight: 500; cursor: pointer;
    box-shadow: var(--shadow-xs);
    transition: background .15s, border-color .15s, color .15s;
}
.pager button:hover:not(:disabled) { border-color: var(--line-hover); color: var(--text); }
.pager button[aria-current="page"] {
    background: var(--accent-50); border-color: var(--accent); color: var(--accent-700); font-weight: 600;
}
.pager button:disabled { opacity: .45; cursor: default; box-shadow: none; }
.pager .gap { min-width: 20px; text-align: center; color: var(--subtle); }
.pager .page-num { display: none; }
.pager .page-indicator {
    padding: 0 var(--s-3); font-size: var(--fs-sm); color: var(--muted); font-variant-numeric: tabular-nums;
}

/* ---------- Skeleton bones ---------- */
.bone {
    display: block; height: 12px; max-width: 220px; border-radius: 6px;
    background: linear-gradient(90deg, #edf1f5 0%, #f7f9fb 45%, #edf1f5 90%);
    background-size: 220% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
}
.skeleton-row td[data-col="meter_id"] .bone { height: 14px; }
.skeleton-row td[data-col="read_at"] .bone { width: 55% !important; }
.skeleton-row td.num .bone { margin-left: auto; min-width: 72px; }
@keyframes shimmer { from { background-position: 120% 0; } to { background-position: -120% 0; } }

/* ---------- Footer ---------- */
.footer {
    display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s-1) var(--s-4);
    padding: 0 0 var(--s-8); font-size: var(--fs-xs); color: var(--faint);
}
.footer code {
    padding: 1px 6px; border-radius: var(--r-xs);
    background: var(--surface-3); color: var(--text-2); font-size: .95em;
}

/* ---------- Breakpoints ---------- */
@media (min-width: 560px) {
    .live { width: auto; }
    .pager .page-num { display: inline-grid; }
    .pager .page-indicator { display: none; }
}

@media (min-width: 760px) {
    :root { --wrap: min(1200px, 100% - 3rem); }
    .topbar { padding: var(--s-8) 0 var(--s-6); }
    .brand { gap: var(--s-4); }
    .brand-tile { width: 48px; height: 48px; }
    .brand-mark { width: 32px; height: 32px; }
    .brand h1 { font-size: var(--fs-xl); }
    .main { padding-top: 0; }

    .panel-head { padding: var(--s-6) var(--s-6) var(--s-5); }
    .toolbar {
        grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) 128px auto;
        grid-template-areas: "search meter rows export";
    }
    .tool--sort { display: none; }

    .data-table thead { display: table-header-group; }
    .data-table tbody tr:not(.state-row) { display: table-row; padding: 0; }
    .data-table th {
        position: sticky; top: 0; z-index: 1;
        padding: 0; text-align: left;
        background: var(--surface-2); border-bottom: 1px solid var(--line);
    }
    .data-table th.num { text-align: right; }
    .data-table th button {
        display: inline-flex; align-items: center; gap: var(--s-2); width: 100%;
        min-height: var(--control-h); padding: 0 var(--s-6);
        border: 0; background: none; cursor: pointer;
        font-size: var(--fs-2xs); font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
        color: var(--muted); transition: color .15s;
    }
    .data-table th button:focus-visible { outline-offset: -2px; }
    .data-table th.num button { justify-content: flex-end; }
    .data-table th button:hover { color: var(--text); }
    .data-table th abbr {
        padding: 1px 5px; border-radius: 4px; background: var(--surface-3);
        font-size: var(--fs-2xs); letter-spacing: 0; text-transform: none; color: var(--faint);
    }
    .data-table td {
        height: 56px; padding: 0 var(--s-6);
        border-bottom: 1px solid var(--line); vertical-align: middle;
    }
    .data-table td[data-col="read_at"] { width: 40%; font-size: var(--fs-base); color: var(--text-2); }
    .data-table td[data-col="meter_id"] { width: 30%; }
    .data-table tbody tr:not(.state-row) { transition: background .12s; }
    .data-table tbody tr:not(.state-row):not(.skeleton-row):hover td { background: var(--accent-25); }
    .data-table tbody tr:last-child td { border-bottom: 0; }
    .t-date { margin-right: var(--s-3); }
    .reading { font-size: var(--fs-base); }

    .sort-icon {
        width: 8px; height: 11px; flex: none; opacity: .4; background: currentColor;
        clip-path: polygon(50% 0, 100% 38%, 0 38%, 0 62%, 100% 62%, 50% 100%);
    }
    th[aria-sort="ascending"] .sort-icon { opacity: 1; color: var(--accent); clip-path: polygon(50% 15%, 100% 70%, 0 70%); }
    th[aria-sort="descending"] .sort-icon { opacity: 1; color: var(--accent); clip-path: polygon(0 30%, 100% 30%, 50% 85%); }
    th[aria-sort="ascending"] button, th[aria-sort="descending"] button { color: var(--text); }

    .pager { justify-content: flex-end; padding: var(--s-3) var(--s-6); }
    .state-row td { padding: 3.5rem var(--s-6) 4rem; }
}

@media (min-width: 760px) and (pointer: fine) {
    .pager button { min-width: 38px; height: 38px; }
}

@media (min-width: 1100px) {
    .panel-head { flex-wrap: nowrap; }
    .toolbar {
        width: auto; flex: none;
        grid-template-columns: 250px 190px 124px auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    .bone { animation: none; background: #edf1f5; }
}