@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ============================================================
   Quantacqua – zarizeni.css
   Panel měřidla: průhledítko (sight glass) jako hlavní prvek,
   monospace odečty, rytiny/rysky místo dekorace.
   ============================================================ */

:root {
    --color-bg: #F4F7F6;
    --color-surface: #FFFFFF;
    --color-sunk: #ECF2F1;
    --color-ink: #0E2A32;
    --color-ink-soft: #4B6169;
    --color-primary: #0B6E76;
    --color-primary-dark: #084F55;
    --color-accent: #E1662E;
    --color-accent-dark: #C4531F;
    --color-line: #DCE6E4;
    --color-error: #C4432B;
    --color-success: #1C7A4E;

    --water-top: #2AA3B0;
    --water-bottom: #0B6E76;
    --water-low-top: #E8A05A;
    --water-low-bottom: #C4531F;

    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'IBM Plex Sans', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

    --radius: 14px;
    --radius-sm: 8px;
    --shadow: 0 4px 20px rgba(14, 42, 50, 0.08);
    --shadow-lg: 0 12px 40px rgba(14, 42, 50, 0.16);
    --container: min(1180px, 100% - 2.5rem);
}

[data-theme="dark"] {
    --color-bg: #07171B;
    --color-surface: #0E2A32;
    --color-sunk: #0A2128;
    --color-ink: #E7F0EF;
    --color-ink-soft: #90A9AE;
    --color-line: #1D3C45;
    --color-primary: #3FB3BD;
    --color-primary-dark: #7FD3DA;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-ink);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 0 0 0.5em;
    color: var(--color-ink);
}

a { color: var(--color-primary); }

/* ---------- Gauge signature mark ---------- */
.gauge-mark {
    display: inline-block;
    width: 1em;
    height: 1em;
    border-radius: 50%;
    background: conic-gradient(var(--color-accent) 0deg 120deg, var(--color-line) 120deg 360deg);
    position: relative;
    vertical-align: -0.15em;
}
.gauge-mark::after {
    content: '';
    position: absolute;
    inset: 22%;
    background: var(--color-surface);
    border-radius: 50%;
}

/* ---------- Header ---------- */
.site-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem clamp(1rem, 4vw, 2.5rem);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    position: sticky;
    top: 0;
    z-index: 20;
}
.logo {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-ink);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5em;
}
.site-header nav {
    display: flex;
    align-items: center;
    gap: clamp(0.75rem, 2vw, 1.5rem);
    flex-wrap: wrap;
}
.site-header nav a {
    text-decoration: none;
    color: var(--color-ink-soft);
    font-size: 0.95rem;
    font-weight: 500;
}
.site-header nav a:hover { color: var(--color-primary); }
.site-header nav a.is-current {
    color: var(--color-ink);
    box-shadow: inset 0 -2px 0 var(--color-accent);
}

.theme-toggle {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--color-line);
    background: var(--color-sunk);
    cursor: pointer;
    display: grid;
    place-items: center;
    padding: 0;
}
.theme-toggle__dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-ink) 50%, transparent 50%);
    border: 1.5px solid var(--color-ink);
}
.theme-toggle:hover { border-color: var(--color-primary); }

/* ---------- Layout ---------- */
.main-content-devices {
    width: var(--container);
    margin: 0 auto;
    padding: clamp(1.5rem, 4vw, 2.75rem) 0 4rem;
}

/* ---------- Souhrnný pásek ---------- */
.status-strip {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    overflow: hidden;
}
.strip-cell {
    padding: 1rem 1.25rem;
    border-right: 1px solid var(--color-line);
}
.strip-cell:last-child { border-right: none; }
.strip-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--color-ink-soft);
}
.strip-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-ink);
    line-height: 1.2;
    margin-top: 0.15rem;
}
.strip-value.is-low { color: var(--color-accent); }

/* ---------- Hlavička seznamu ---------- */
.list-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 2.25rem 0 1rem;
}
.devices-heading {
    font-size: clamp(1.3rem, 3vw, 1.7rem);
    margin: 0;
}
.search-field input {
    width: min(260px, 60vw);
    padding: 0.55em 0.9em;
    border: 1px solid var(--color-line);
    border-radius: 999px;
    background: var(--color-surface);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: 0.92rem;
}
.search-field input:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ---------- Mřížka čidel ---------- */
.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
    gap: 1.25rem;
}

.device-card {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 1rem;
    align-items: stretch;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: 1.1rem;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.device-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}
.device-card.is-low { border-left: 3px solid var(--color-accent); }
.device-card.is-waiting { border-style: dashed; cursor: default; }
.device-card.is-waiting:hover { transform: none; box-shadow: none; border-color: var(--color-line); }
.device-card h3 {
    margin: 0 0 0.15rem;
    font-size: 1.05rem;
}
.card-main { min-width: 0; display: flex; flex-direction: column; }
.device-info {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-ink-soft);
}
.device-value {
    font-family: var(--font-mono);
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-ink);
    display: block;
    line-height: 1.25;
}
.card-foot {
    margin-top: auto;
    padding-top: 0.6rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.chip {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.22em 0.6em;
    border-radius: 999px;
    border: 1px solid var(--color-line);
    color: var(--color-ink-soft);
}
.chip.is-low { border-color: var(--color-accent); color: var(--color-accent); }
.chip.is-stale { border-color: var(--color-line); color: var(--color-ink-soft); }
.chip.is-wait { border-color: var(--color-accent); color: var(--color-accent); }

.no-devices-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1.5rem;
    border: 1px dashed var(--color-line);
    border-radius: var(--radius);
    color: var(--color-ink-soft);
    background: var(--color-surface);
}
.no-devices-message strong { display: block; color: var(--color-ink); font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 0.35rem; }

/* ============================================================
   SIGNATURE: průhledítko / sight glass
   ============================================================ */
.glass-svg { display: block; width: 100%; height: auto; }
.glass-bg { fill: var(--color-sunk); }
.glass-frame { fill: none; stroke: var(--color-line); stroke-width: 2; }
.water {
    transition: transform 0.9s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.wave-anim { animation: drift 7s linear infinite; }
@keyframes drift {
    from { transform: translateX(0); }
    to   { transform: translateX(-120px); }
}
.tick { stroke: var(--color-ink-soft); stroke-width: 1; opacity: 0.45; }
.tick-label {
    font-family: var(--font-mono);
    font-size: 9px;
    fill: var(--color-ink-soft);
    opacity: 0.7;
}
.reserve-line {
    stroke: var(--color-accent);
    stroke-width: 1.5;
    stroke-dasharray: 4 3;
}

.glass-panel {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: 1.5rem 1.25rem 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}
.glass-panel .glass-svg { max-width: 190px; }
.glass-readout { text-align: center; }
.glass-pct {
    font-family: var(--font-mono);
    font-size: 2.4rem;
    font-weight: 600;
    line-height: 1;
    color: var(--color-primary);
}
.glass-pct.is-low { color: var(--color-accent); }
.glass-litry {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--color-ink-soft);
    margin-top: 0.3rem;
}

/* ---------- Detail ---------- */
#device-detail { width: 100%; }

.btn-back {
    background: none;
    border: 1px solid var(--color-line);
    color: var(--color-ink-soft);
    padding: 0.5em 1em;
    border-radius: 999px;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}
.btn-back:hover { border-color: var(--color-primary); color: var(--color-primary); }

.detail-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}
.detail-head h2 { margin: 0; font-size: clamp(1.4rem, 3vw, 1.9rem); }
.detail-updated {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-ink-soft);
}

.detail-top {
    display: grid;
    grid-template-columns: minmax(220px, 280px) 1fr;
    gap: 1.25rem;
    margin-bottom: 1.75rem;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1px;
    background: var(--color-line);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    overflow: hidden;
    align-content: start;
}
.stat-cell {
    background: var(--color-surface);
    padding: 1.1rem 1.25rem;
}
.stat-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--color-ink-soft);
}
.stat-value {
    font-family: var(--font-mono);
    font-size: 1.45rem;
    font-weight: 600;
    margin-top: 0.2rem;
    line-height: 1.15;
}
.stat-value.is-low { color: var(--color-accent); }
.stat-value.is-up { color: var(--color-success); }
.stat-note {
    font-size: 0.78rem;
    color: var(--color-ink-soft);
    margin-top: 0.15rem;
}

/* ---------- Tabs ---------- */
.tabs {
    display: flex;
    gap: 0.4rem;
    border-bottom: 1px solid var(--color-line);
    margin-bottom: 1.5rem;
    overflow-x: auto;
}
.tab-btn {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 0.7em 1.1em;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-ink-soft);
    cursor: pointer;
    white-space: nowrap;
    margin-bottom: -1px;
}
.tab-btn:hover { color: var(--color-ink); }
.tab-btn.active {
    color: var(--color-ink);
    border-bottom-color: var(--color-accent);
    font-weight: 600;
}
.tab-content { width: 100%; }

/* ---------- Graf ---------- */
.range-buttons { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1rem; }
.range-btn {
    background: var(--color-surface);
    color: var(--color-ink-soft);
    border: 1px solid var(--color-line);
    border-radius: 999px;
    padding: 0.4em 1.1em;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    cursor: pointer;
}
.range-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.range-btn.active {
    background: var(--color-ink);
    border-color: var(--color-ink);
    color: var(--color-surface);
}
[data-theme="dark"] .range-btn.active { color: var(--color-bg); background: var(--color-primary); border-color: var(--color-primary); }

.chart-wrapper {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: 1.25rem;
}

/* ---------- Historie ---------- */
.filters { margin-bottom: 1rem; }
.filter-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.filter-row label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-ink-soft);
}
.filter-row input[type="date"] {
    padding: 0.45em 0.7em;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-ink);
    font-family: var(--font-mono);
    font-size: 0.88rem;
}

.history-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    overflow: hidden;
}
.history-table th, .history-table td {
    text-align: left;
    padding: 0.7rem 1rem;
    border-bottom: 1px solid var(--color-line);
    font-family: var(--font-mono);
    font-size: 0.88rem;
}
.history-table th {
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-ink-soft);
    background: var(--color-sunk);
}
.history-table tr:last-child td { border-bottom: none; }
.history-table td.delta-down { color: var(--color-accent); }
.history-table td.delta-up { color: var(--color-success); }

/* ---------- Panely (parametry / nastavení) ---------- */
.panel {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    padding: 1.5rem;
    max-width: 560px;
    margin-bottom: 1.25rem;
}
.panel h3 { font-size: 1.05rem; margin: 0 0 0.3rem; }
.panel-note {
    font-size: 0.88rem;
    color: var(--color-ink-soft);
    margin: 0 0 1.1rem;
}
.panel.is-danger { border-color: rgba(196, 67, 43, 0.45); }

.field-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--color-ink-soft);
    margin-bottom: 0.35rem;
}

.param-select, .param-input {
    width: 100%;
    padding: 0.65em 0.9em;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: 0.95rem;
}
.param-select:focus-visible, .param-input:focus-visible,
.search-field input:focus-visible, button:focus-visible, select:focus-visible, input:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}
.param-inputs {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin: 1.1rem 0;
}
.param-row { display: flex; flex-direction: column; gap: 0.3rem; }
.param-row label {
    font-size: 0.85rem;
    color: var(--color-ink-soft);
}
.param-row input {
    width: 100%;
    padding: 0.65em 0.9em;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-ink);
    font-family: var(--font-mono);
    font-size: 0.95rem;
}
.param-status {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin: 0.7rem 0 0;
    min-height: 1.2em;
}

.rename-row { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.rename-row .param-input { flex: 1; min-width: 160px; }

.reserve-row { display: flex; align-items: center; gap: 0.9rem; flex-wrap: wrap; }
.reserve-row input[type="range"] { flex: 1; min-width: 140px; accent-color: var(--color-accent); }
.reserve-value {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    min-width: 3.5em;
    color: var(--color-accent);
}

.cas-list { list-style: none; padding: 0; margin: 0 0 1rem; }
.cas-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.85rem;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    background: var(--color-bg);
}
.cas-list li.is-empty {
    justify-content: center;
    color: var(--color-ink-soft);
    border-style: dashed;
    background: none;
}

/* ---------- Tlačítka ---------- */
.btn-solid {
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.7em 1.3em;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.15s ease, transform 0.1s ease;
}
.btn-solid:hover { background: var(--color-accent-dark); }
.btn-solid:active { transform: scale(0.98); }

.btn-ghost {
    background: none;
    border: 1px solid var(--color-line);
    color: var(--color-ink-soft);
    border-radius: 999px;
    padding: 0.45em 1em;
    font-family: var(--font-body);
    font-size: 0.88rem;
    cursor: pointer;
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-danger {
    background: none;
    border: 1px solid var(--color-error);
    color: var(--color-error);
    border-radius: var(--radius-sm);
    padding: 0.65em 1.2em;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.92rem;
    cursor: pointer;
}
.btn-danger:hover { background: var(--color-error); color: #fff; }

.btn-delete {
    background: none;
    border: none;
    color: var(--color-error);
    cursor: pointer;
    font-size: 1rem;
    padding: 0 0.3em;
    line-height: 1;
}

.btn-container { display: flex; justify-content: center; margin-top: 2.5rem; }
.addButton {
    background: var(--color-ink);
    color: var(--color-surface);
    border: none;
    border-radius: 999px;
    padding: 0.85em 2.2em;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease;
}
.addButton:hover { transform: translateY(-2px); background: var(--color-primary-dark); }
[data-theme="dark"] .addButton { background: var(--color-primary); color: var(--color-bg); }

/* ---------- Modal ---------- */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(7, 23, 27, 0.55);
    z-index: 1000;
    overflow-y: auto;
    backdrop-filter: blur(2px);
}
.modal-content {
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 1.75rem;
    width: min(420px, calc(100% - 2rem));
    margin: 12vh auto 2rem;
}
.modal-content h3 { margin-top: 0; }
.modal-actions { display: flex; gap: 0.6rem; margin-top: 1.1rem; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
    .detail-top { grid-template-columns: 1fr; }
    .glass-panel { flex-direction: row; justify-content: center; gap: 1.5rem; }
    .glass-panel .glass-svg { max-width: 120px; }
}
@media (max-width: 480px) {
    .site-header nav { gap: 0.6rem; font-size: 0.9rem; }
    .list-head { flex-direction: column; align-items: stretch; }
    .search-field input { width: 100%; }
    .strip-cell { border-right: none; border-bottom: 1px solid var(--color-line); }
    .strip-cell:last-child { border-bottom: none; }
    .device-card { grid-template-columns: 52px 1fr; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; animation: none !important; }
}