/* ==========================================================================
   DRUG WARS CLASSIC ONLINE
   A premium DOS remake: CRT phosphor, scanlines, and a terminal that never was.

   Four themes are defined as custom-property sets on [data-theme]. Everything
   downstream reads the variables, so adding a fifth theme means adding one
   block and nothing else.
   ========================================================================== */

:root,
[data-theme="green"] {
    --bg:            #050b06;
    --bg-panel:      #08140a;
    --bg-raised:     #0c1d0f;
    --fg:            #4dfd7a;
    --fg-dim:        #2a9d4b;
    --fg-bright:     #b6ffc8;
    --accent:        #7dff9e;
    --border:        #1c5c2d;
    --glow:          rgba(77, 253, 122, 0.45);
    --good:          #7dff9e;
    --bad:           #ff6b5e;
    --warn:          #ffd45e;
    --market:        #5ee7ff;
    --legend:        #ff9ef7;
}

[data-theme="amber"] {
    --bg:            #0b0703;
    --bg-panel:      #150e04;
    --bg-raised:     #1f1506;
    --fg:            #ffb642;
    --fg-dim:        #a06f1c;
    --fg-bright:     #ffe0a8;
    --accent:        #ffcc70;
    --border:        #5c3c10;
    --glow:          rgba(255, 182, 66, 0.45);
    --good:          #ffd98a;
    --bad:           #ff6b5e;
    --warn:          #fff07a;
    --market:        #7fd4ff;
    --legend:        #ffa8e6;
}

[data-theme="blue"] {
    --bg:            #02060f;
    --bg-panel:      #050d1c;
    --bg-raised:     #081428;
    --fg:            #9db8ff;
    --fg-dim:        #5570b8;
    --fg-bright:     #dce6ff;
    --accent:        #7aa2ff;
    --border:        #1d3563;
    --glow:          rgba(157, 184, 255, 0.4);
    --good:          #86ffc0;
    --bad:           #ff7b7b;
    --warn:          #ffd45e;
    --market:        #6fe0ff;
    --legend:        #d6a8ff;
}

[data-theme="cyber"] {
    --bg:            #08030d;
    --bg-panel:      #120720;
    --bg-raised:     #1b0b2e;
    --fg:            #f070ff;
    --fg-dim:        #9a3fb5;
    --fg-bright:     #ffd6ff;
    --accent:        #58f7ff;
    --border:        #4a1866;
    --glow:          rgba(240, 112, 255, 0.45);
    --good:          #58ffc8;
    --bad:           #ff5b8a;
    --warn:          #ffe15e;
    --market:        #58f7ff;
    --legend:        #ffe45e;
}

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

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

html {
    background: #000;
    /* A pixel webfont can be dropped into wwwroot/fonts and added at the front of
       this stack; the strict CSP forbids loading one from a CDN, so the default is
       a hinted monospace that renders crisply at small sizes on every platform. */
    font-family: "Consolas", "DejaVu Sans Mono", "Courier New", ui-monospace, monospace;
    font-size: 16px;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--fg);
    line-height: 1.45;
    letter-spacing: 0.02em;
    text-shadow: 0 0 6px var(--glow);
    overflow-x: hidden;
}

/* The CRT overlays. Both are pointer-events:none and sit above everything, so
   they are decoration only and can never swallow a click. */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 9000;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0px,
        rgba(0, 0, 0, 0) 2px,
        rgba(0, 0, 0, 0.28) 3px,
        rgba(0, 0, 0, 0.28) 4px
    );
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 9001;
    pointer-events: none;
    background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0.55) 100%);
    animation: flicker 5.5s infinite steps(60);
}

@keyframes flicker {
    0%, 96%, 100% { opacity: 1; }
    97%           { opacity: 0.88; }
    98%           { opacity: 1; }
    99%           { opacity: 0.93; }
}

/* Respect the platform setting. A permanent flicker is a genuine problem for
   photosensitivity and for anyone reading this for half an hour. */
@media (prefers-reduced-motion: reduce) {
    body::after,
    .cursor,
    .flash {
        animation: none !important;
    }
}

/* Turns off scanlines and flicker without losing the palette. */
body.plain::before,
body.plain::after {
    display: none;
}

a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px dotted var(--border);
}

a:hover,
a:focus-visible {
    color: var(--fg-bright);
    border-bottom-color: var(--fg-bright);
}

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

h1, h2, h3 {
    margin: 0 0 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--fg-bright);
}

h1 { font-size: 1.5rem; }
h2 { font-size: 1.1rem; }
h3 { font-size: 0.95rem; }

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */

.shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 1rem 1rem 3rem;
}

.topbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1rem;
}

.topbar .brand {
    font-weight: bold;
    letter-spacing: 0.18em;
    color: var(--fg-bright);
    border: none;
}

.topbar nav {
    display: flex;
    gap: 0.9rem;
    flex-wrap: wrap;
}

.topbar .spacer {
    flex: 1 1 auto;
}

.panel {
    border: 1px solid var(--border);
    background: var(--bg-panel);
    padding: 0.85rem 1rem;
    margin-bottom: 1rem;
    position: relative;
}

/* The retro double border: a second inset rule, drawn with a pseudo-element so
   it costs no markup. */
.panel::after {
    content: "";
    position: absolute;
    inset: 3px;
    border: 1px solid var(--border);
    opacity: 0.5;
    pointer-events: none;
}

.panel > h2:first-child,
.panel > h3:first-child {
    margin-top: 0;
}

.grid {
    display: grid;
    gap: 1rem;
}

.grid.two   { grid-template-columns: 1fr 1fr; }
.grid.status { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }

/* --------------------------------------------------------------------------
   Status readout
   -------------------------------------------------------------------------- */

.stat {
    border: 1px solid var(--border);
    background: var(--bg-raised);
    padding: 0.5rem 0.7rem;
}

.stat .label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--fg-dim);
}

.stat .value {
    display: block;
    font-size: 1.15rem;
    color: var(--fg-bright);
    /* Digits must not jitter as they change; the readout updates every action. */
    font-variant-numeric: tabular-nums;
}

.value.good { color: var(--good); }
.value.bad  { color: var(--bad); }

.bar {
    height: 6px;
    margin-top: 0.35rem;
    background: var(--bg);
    border: 1px solid var(--border);
}

.bar > span {
    display: block;
    height: 100%;
    background: var(--fg);
    transition: width 0.25s ease-out;
}

.bar.danger > span { background: var(--bad); }

/* --------------------------------------------------------------------------
   Tables
   -------------------------------------------------------------------------- */

table {
    width: 100%;
    border-collapse: collapse;
    font-variant-numeric: tabular-nums;
}

th, td {
    padding: 0.35rem 0.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--fg-dim);
    white-space: nowrap;
}

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

tbody tr:hover { background: var(--bg-raised); }

.spike  { color: var(--warn); font-weight: bold; }
.crash  { color: var(--market); font-weight: bold; }
.muted  { color: var(--fg-dim); }

.scroll-x {
    overflow-x: auto;
}

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

button,
.btn {
    font: inherit;
    color: var(--fg);
    background: var(--bg-raised);
    border: 1px solid var(--border);
    padding: 0.35rem 0.7rem;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.78rem;
    text-shadow: inherit;
    transition: background 0.12s, color 0.12s;
}

button:hover:not(:disabled),
.btn:hover {
    background: var(--fg-dim);
    color: var(--bg);
}

button:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

button.primary {
    border-color: var(--fg);
    color: var(--fg-bright);
}

button.danger {
    border-color: var(--bad);
    color: var(--bad);
}

input[type="text"],
input[type="number"],
input[type="password"],
input[type="email"],
select {
    font: inherit;
    color: var(--fg-bright);
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 0.3rem 0.45rem;
    width: 100%;
    font-variant-numeric: tabular-nums;
}

/* Spinners are useless at these magnitudes and steal horizontal space. */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] { -moz-appearance: textfield; appearance: textfield; }

.field {
    margin-bottom: 0.8rem;
}

.field label {
    display: block;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--fg-dim);
    margin-bottom: 0.2rem;
}

.row {
    display: flex;
    gap: 0.4rem;
    align-items: center;
    flex-wrap: wrap;
}

.trade-controls {
    display: flex;
    gap: 0.3rem;
    align-items: center;
}

.trade-controls input {
    width: 6.5rem;
}

/* --------------------------------------------------------------------------
   Terminal log
   -------------------------------------------------------------------------- */

.terminal {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 0.7rem 0.9rem;
    height: 15rem;
    overflow-y: auto;
    font-size: 0.85rem;
    scrollbar-width: thin;
}

.terminal p {
    margin: 0 0 0.25rem;
}

.terminal .day {
    color: var(--fg-dim);
    margin-right: 0.5rem;
}

.terminal .good      { color: var(--good); }
.terminal .bad       { color: var(--bad); }
.terminal .market    { color: var(--market); }
.terminal .police    { color: var(--warn); }
.terminal .rare      { color: var(--warn); font-weight: bold; }
.terminal .legendary { color: var(--legend); font-weight: bold; }

.cursor {
    display: inline-block;
    width: 0.6em;
    height: 1em;
    background: var(--fg);
    vertical-align: text-bottom;
    animation: blink 1.1s steps(2, start) infinite;
}

@keyframes blink {
    to { visibility: hidden; }
}

/* --------------------------------------------------------------------------
   Modal prompts (police stops, offers, game over)
   -------------------------------------------------------------------------- */

.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 8000;
    background: rgba(0, 0, 0, 0.82);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal {
    background: var(--bg-panel);
    border: 1px solid var(--fg);
    box-shadow: 0 0 30px var(--glow);
    padding: 1.2rem 1.4rem;
    max-width: 34rem;
    width: 100%;
}

.modal h2 {
    color: var(--warn);
}

.modal .choices {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

[hidden] { display: none !important; }

/* --------------------------------------------------------------------------
   Notices
   -------------------------------------------------------------------------- */

.notice {
    border: 1px solid var(--border);
    border-left-width: 3px;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.85rem;
}

.notice.error   { border-left-color: var(--bad); color: var(--bad); }
.notice.success { border-left-color: var(--good); color: var(--good); }

.validation-summary ul {
    margin: 0;
    padding-left: 1.1rem;
}

.flash { animation: flash 0.45s ease-out; }

@keyframes flash {
    from { background: var(--fg-dim); }
    to   { background: transparent; }
}

/* --------------------------------------------------------------------------
   Title screen
   -------------------------------------------------------------------------- */

.title-art {
    text-align: center;
    padding: 2rem 0 1rem;
}

.title-art pre {
    display: inline-block;
    margin: 0;
    font-size: clamp(0.32rem, 1.55vw, 0.9rem);
    line-height: 1.05;
    color: var(--fg-bright);
    text-shadow: 0 0 12px var(--glow);
}

.title-sub {
    text-align: center;
    color: var(--fg-dim);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    font-size: 0.75rem;
    margin-bottom: 2rem;
}

.menu {
    max-width: 26rem;
    margin: 0 auto;
    display: grid;
    gap: 0.5rem;
}

.menu button,
.menu .btn {
    width: 100%;
    padding: 0.6rem;
    font-size: 0.9rem;
    text-align: center;
}

/* --------------------------------------------------------------------------
   Theme + sound switcher
   -------------------------------------------------------------------------- */

.switcher {
    display: flex;
    gap: 0.3rem;
    align-items: center;
    font-size: 0.7rem;
}

.switcher button {
    padding: 0.2rem 0.45rem;
    font-size: 0.65rem;
}

.switcher button[aria-pressed="true"] {
    background: var(--fg-dim);
    color: var(--bg);
}

/* --------------------------------------------------------------------------
   Tabs
   -------------------------------------------------------------------------- */

.tabs {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 0.8rem;
    flex-wrap: wrap;
}

.tabs a[aria-current="page"] {
    background: var(--fg-dim);
    color: var(--bg);
}

/* --------------------------------------------------------------------------
   Responsive. Desktop first, per the brief; these are the concessions to a
   phone, where the market table is the one thing that must stay readable.
   -------------------------------------------------------------------------- */

@media (max-width: 820px) {
    .grid.two { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
    html { font-size: 15px; }

    .shell { padding: 0.6rem 0.6rem 2rem; }

    .topbar { gap: 0.5rem; }

    .terminal { height: 11rem; }

    .trade-controls { width: 100%; }
    .trade-controls input { flex: 1 1 auto; width: auto; }

    /* Below this width the market table stops being a table and becomes a list
       of cards, because six numeric columns cannot be read on a phone. */
    table.market thead { display: none; }

    table.market tr {
        display: grid;
        grid-template-columns: 1fr auto;
        gap: 0.15rem 0.5rem;
        padding: 0.5rem 0;
        border-bottom: 1px solid var(--border);
    }

    table.market td {
        border: none;
        padding: 0.1rem 0;
    }

    table.market td[data-label]::before {
        content: attr(data-label) ": ";
        color: var(--fg-dim);
        font-size: 0.7rem;
        text-transform: uppercase;
    }

    table.market td.actions {
        grid-column: 1 / -1;
    }
}

@media print {
    body::before,
    body::after { display: none; }
}

/* --------------------------------------------------------------------------
   Link back to the parent site, when this app is mounted under one.
   -------------------------------------------------------------------------- */

.parent-link {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--fg-dim);
    border-bottom: none;
    white-space: nowrap;
}

.parent-link:hover,
.parent-link:focus-visible {
    color: var(--fg-bright);
}

/* --------------------------------------------------------------------------
   Honeypot field.

   Moved off-screen rather than display:none on purpose: some form-spam bots
   skip fields that are display:none, and the whole point is that they fill it.
   Kept out of the accessibility tree by aria-hidden on the wrapper, so nobody
   using a screen reader is ever invited to complete it.
   -------------------------------------------------------------------------- */

.hp-field {
    position: absolute;
    left: -9999px;
    top: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}