/*
   CryptoWatcher design system: tokens, base and shared primitives.
   Component specific styles live next to components in *.razor.css (Blazor CSS isolation).
*/

/* ---------- Tokens ---------- */

:root {
    color-scheme: dark;
    --bg: #0c0f13;
    --surface: #12161c;
    --surface-2: #171c23;
    --surface-3: #1f252e;
    --border: #232a34;
    --line: #1a2028;
    --text: #e6e9ed;
    --text-2: #a3acb9;
    --text-3: #6c7787;
    --accent: #4f8cff;
    --accent-soft: rgba(79, 140, 255, .14);
    --up: #1dc58a;
    --down: #f6465d;
    --up-soft: rgba(29, 197, 138, .12);
    --down-soft: rgba(246, 70, 93, .12);
    --warn: #f0b90b;
    --shadow: 0 8px 24px rgba(0, 0, 0, .35);

    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
    --radius: 6px;
    --radius-lg: 8px;
    --topbar-h: 44px;
    --sidebar-w: 196px;
    --sidebar-rail: 52px;
}

:root[data-theme="light"] {
    color-scheme: light;
    --bg: #f3f4f6;
    --surface: #ffffff;
    --surface-2: #f7f8fa;
    --surface-3: #eceff3;
    --border: #e1e5ea;
    --line: #eef0f3;
    --text: #111827;
    --text-2: #4b5563;
    --text-3: #8a93a1;
    --accent: #2563eb;
    --accent-soft: rgba(37, 99, 235, .1);
    --up: #059669;
    --down: #dc2f4b;
    --up-soft: rgba(5, 150, 105, .1);
    --down-soft: rgba(220, 47, 75, .08);
    --warn: #b7791f;
    --shadow: 0 8px 24px rgba(17, 24, 39, .12);
}

/* ---------- Base ---------- */

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

html, body {
    margin: 0;
    height: 100%;
}

body {
    background: var(--bg);
    color: var(--text);
    font: 13px/1.45 var(--font);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--surface-3) transparent;
}

h1, h2, h3, p {
    margin: 0;
}

a {
    color: var(--accent);
    text-decoration: none;
}

button, input, select {
    font: inherit;
    color: inherit;
}

::selection {
    background: var(--accent-soft);
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

/* ---------- Page scaffolding ---------- */

.page {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 1320px;
    padding: 16px 20px 28px;
}

/* Order book ladders read best when the columns stay close together */
.page.book-page {
    max-width: 1080px;
}

.stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1px;
    overflow: hidden;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.stats > * {
    flex: 1 1 150px;
}

/* ---------- Numbers and semantics ---------- */

.num {
    font-variant-numeric: tabular-nums;
    text-align: right;
    white-space: nowrap;
}

.up { color: var(--up); }
.down { color: var(--down); }
.dim { color: var(--text-2); }
.muted { color: var(--text-3); }

/* ---------- Data grid ---------- */

.grid {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    font-variant-numeric: tabular-nums;
}

.grid th {
    height: 30px;
    padding: 0 10px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    color: var(--text-3);
    font-size: 11px;
    font-weight: 500;
    text-align: left;
    white-space: nowrap;
}

.grid td {
    height: 30px;
    padding: 0 10px;
    border-bottom: 1px solid var(--line);
    white-space: nowrap;
}

.grid th.num, .grid td.num {
    text-align: right;
}

.grid tbody tr:last-child td {
    border-bottom: 0;
}

.grid tbody tr:hover td {
    background: var(--surface-2);
}

/* ---------- Controls ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 28px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-2);
    color: var(--text);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
}

.btn:hover {
    background: var(--surface-3);
}

.btn:disabled {
    opacity: .5;
    cursor: default;
}

.seg {
    display: inline-flex;
    gap: 2px;
    padding: 2px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
}

.seg button {
    height: 24px;
    padding: 0 10px;
    border: 0;
    border-radius: 4px;
    background: transparent;
    color: var(--text-2);
    font-size: 12px;
    font-weight: 500;
    text-transform: capitalize;
    cursor: pointer;
}

.seg button:hover:not(:disabled) {
    color: var(--text);
}

.seg button.active {
    background: var(--surface-3);
    color: var(--text);
}

.seg button:disabled {
    cursor: default;
}

.seg.plain button {
    text-transform: none;
}

.input {
    height: 28px;
    width: 120px;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    font-size: 12px;
    text-transform: uppercase;
}

.chip {
    display: inline-flex;
    align-items: center;
    height: 20px;
    padding: 0 7px;
    border-radius: 4px;
    background: var(--surface-3);
    color: var(--text-2);
    font-size: 11px;
    font-weight: 500;
    text-transform: capitalize;
    white-space: nowrap;
}

/* ---------- Indicators ---------- */

.spinner {
    display: inline-block;
    width: 10px;
    height: 10px;
    border: 1.5px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin .8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Bid vs ask share, bid grows from the left */
.balance {
    display: flex;
    height: 6px;
    min-width: 72px;
    overflow: hidden;
    border-radius: 3px;
    background: var(--down);
}

.balance > span {
    background: var(--up);
}

/* ---------- App shell states ---------- */

.app-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 100vh;
    color: var(--text-3);
}

#blazor-error-ui {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    padding: 10px 44px 10px 16px;
    background: var(--down);
    color: #fff;
}

#blazor-error-ui .reload {
    margin-left: 12px;
    color: #fff;
    font-weight: 600;
    text-decoration: underline;
}

#blazor-error-ui .dismiss {
    position: absolute;
    top: 9px;
    right: 16px;
    cursor: pointer;
}

@media (max-width: 640px) {
    .page {
        padding: 12px 12px 24px;
    }

    .stats > * {
        flex-basis: 40%;
    }
}