/* ==========================================================================
   OpZone.UI — shared design layer (cross-app)
   Served at: _content/OpZone.UI/opzone-ui.css
   Load position: after _content/MudBlazor/MudBlazor.min.css and before the
   consuming app's own stylesheets (Website chain slot 0 of 8; Mobile later).
   Nothing here may move into a consuming app's stylesheet — the emitting
   theme (OpZoneTheme.cs) and this file are the ONLY sanctioned source of the
   brand values.

   !!! BRAND COLOUR CHANGE = EDIT BOTH !!!
   The hex values below are duplicated with src/OpZone.UI/Theme/OpZoneTheme.cs
   (PaletteLight). The C# theme feeds every --mud-palette-* variable;
   this file feeds the --opz-* tokens. A brand colour change must touch both
   files or the two render differently. The --opz-screen* tokens are dark
   surfaces — they have NO --mud-palette-* counterpart (the app is locked to
   light mode; only screens are dark).
   ========================================================================== */

/* ==========================================================================
   C2 — design tokens
   The complete token block (plan C2). Consumed by both apps' stylesheets.
   ========================================================================== */

/* ---- Paper / ink / signal family ---- */
:root {
    --opz-paper: #ECE7DA;
    --opz-paper-2: #E3DDCB;
    --opz-paper-3: #D5CDB7;

    --opz-ink: #161A12;
    --opz-ink-2: #2A3121;
    --opz-ink-3: #5A6350;
    --opz-ink-4: #8A917E;

    --opz-olive: #4F5D2F;
    --opz-olive-2: #3A4522;

    --opz-signal: #0DB0FC;
    --opz-signal-deep: #0C8AFF;
    --opz-cyan: #4CC9F0;
    --opz-hazard: #F2551D;          /* deferred decision: orange vs blue */

    --opz-hair: rgba(22, 26, 18, 0.16);
    --opz-hair-2: rgba(22, 26, 18, 0.32);

    --opz-font-display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
    --opz-font-body: 'Barlow', 'Segoe UI', sans-serif;
    --opz-font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

    --opz-gutter: clamp(20px, 5vw, 72px);
    --opz-max: 1440px;
    --opz-section: clamp(96px, 12vw, 176px);

    --opz-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --opz-ease-soft: cubic-bezier(0.32, 0.72, 0, 1);
    --opz-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ---- Screen family (the only sanctioned dark) ----
   Dark surfaces appear ONLY where a screen is drawn (hero plate, God View
   console, mode figures, maps, login backdrop). No card/panel may use these. */
:root {
    --opz-screen: #0B0F0A;
    --opz-screen-2: #141A12;
    --opz-screen-text: #ECE7DA;
    --opz-screen-soft: rgba(236, 231, 218, 0.72);
    --opz-screen-hair: rgba(236, 231, 218, 0.14);   /* was --hair-light */
    --opz-screen-frame: rgba(236, 231, 218, 0.18);
}

/* ---- Panel family (light paper card) ----
   Deliberately NO --opz-panel-bg: MudPaper always emits
   background: var(--mud-palette-surface), and every card goes through
   OpzPanel, so the surface is a single centralised decision (plan B). */
:root {
    --opz-panel-border: var(--opz-hair);
    --opz-panel-border-strong: var(--opz-hair-2);
    --opz-panel-border-danger: rgba(185, 28, 28, 0.35);
    --opz-panel-text: var(--opz-ink);
    --opz-panel-text-soft: var(--opz-ink-3);
    --opz-panel-radius: 2px;
    --opz-panel-padding: clamp(22px, 4vw, 40px);
    --opz-panel-shadow: none;
}

/* ---- Alert family (fed by the load-bearing override block, plan F-13) ----
   MudAlert severity colours are not palette-drivable in 9.5 (verified); the
   override block in opz-mud-overrides.css remaps --mud-palette-<sev>* from
   these tokens on the alert element only, so page buttons keep the deep
   palette fills while alerts keep their bright severity fills. */
:root {
    --opz-alert-info: #38BDF8;
    --opz-alert-info-rgb: 56, 189, 248;
    --opz-alert-info-darken: #38BDF8;
    --opz-alert-info-text: #0B1220;
    --opz-alert-info-hover: rgba(56, 189, 248, 0.12);

    --opz-alert-success: #4ADE80;
    --opz-alert-success-rgb: 74, 222, 128;
    --opz-alert-success-darken: #4ADE80;
    --opz-alert-success-text: #0B1220;
    --opz-alert-success-hover: rgba(74, 222, 128, 0.12);

    --opz-alert-warning: #FBBF24;
    --opz-alert-warning-rgb: 251, 191, 36;
    --opz-alert-warning-darken: #FBBF24;
    --opz-alert-warning-text: #0B1220;
    --opz-alert-warning-hover: rgba(251, 191, 36, 0.12);

    --opz-alert-error: #F87171;
    --opz-alert-error-rgb: 248, 113, 113;
    --opz-alert-error-darken: #F87171;
    --opz-alert-error-text: #0B1220;
    --opz-alert-error-hover: rgba(248, 113, 113, 0.12);
}

/* ==========================================================================
   Cross-app base classes
   Canonical definitions (the bare .display/.mono/.lede/.rule/.reg/.container
   copies in the Website landing stylesheet stay there as pre-rename aliases
   until lane 6a renames the markup — plan C5).
   ========================================================================== */

.opz-mono {
    font-family: var(--opz-font-mono);
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-weight: 500;
}

.opz-display {
    font-family: var(--opz-font-display);
    font-weight: 700;
    text-transform: uppercase;
    line-height: 0.92;
    letter-spacing: -0.012em;
}

.opz-display em {
    font-style: normal;
    color: var(--opz-signal);
}

.opz-display .thin {
    font-weight: 400;
}

.opz-lede {
    font-size: clamp(19px, 1.6vw, 23px);
    line-height: 1.45;
    color: var(--opz-ink-2);
    max-width: 60ch;
}

.opz-lede strong {
    font-weight: 600;
    color: var(--opz-ink);
}

.opz-container {
    width: min(100% - var(--opz-gutter) * 2, var(--opz-max));
    margin-inline: auto;
}

/* ---- Registration marks / hairlines ---- */
.opz-rule {
    height: 1px;
    background: var(--opz-hair);
    border: 0;
    margin: 0;
}

.opz-rule.strong {
    background: var(--opz-ink);
}

.opz-reg {
    position: relative;
}

.opz-reg::before,
.opz-reg::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    border: 1px solid var(--opz-hair-2);
}

.opz-reg::before {
    left: -1px;
    top: -1px;
    border-right: 0;
    border-bottom: 0;
}

.opz-reg::after {
    right: -1px;
    bottom: -1px;
    border-left: 0;
    border-top: 0;
}

/* ==========================================================================
   RCL component styles (OpzPanel / OpzButton / OpzLegalPage)
   ========================================================================== */

/* ==========================================================================
   OpzPanel
   ========================================================================== */

.opz-panel {
    border: 1px solid var(--opz-panel-border);
    border-radius: var(--opz-panel-radius);
    padding: var(--opz-panel-padding);
    box-shadow: var(--opz-panel-shadow);
    color: var(--opz-panel-text);
}

.opz-panel--danger {
    border-color: var(--opz-panel-border-danger);
}

.opz-panel__header {
    margin-bottom: clamp(16px, 3vw, 24px);
}

.opz-panel__title {
    margin: 0;
    font-family: var(--opz-font-display);
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    font-weight: 700;
    line-height: 1.05;
    text-transform: uppercase;
    color: var(--opz-panel-text);
}

.opz-panel__subtitle {
    margin: 6px 0 0;
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--opz-panel-text-soft);
}

/* ==========================================================================
   OpzButton
   ========================================================================== */

.opz-btn {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 0 0 0 22px;
    height: 52px;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    font-family: var(--opz-font-mono);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid var(--opz-ink);
    color: var(--opz-ink);
    background: transparent;
    transition:
        transform 0.35s var(--opz-ease-soft),
        background-color 0.45s var(--opz-ease-out),
        color 0.45s var(--opz-ease-out),
        border-color 0.45s var(--opz-ease-out);
}

.opz-btn__arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    margin: 0;
    border-left: 1px solid currentColor;
    transition: background-color 0.45s var(--opz-ease-out);
}

.opz-btn__arrow svg {
    width: 16px;
    height: 16px;
    transition: transform 0.5s var(--opz-ease-out);
}

/* The diagonal nudge only makes sense for the default arrow. Custom glyphs
   (TrailingIcon) keep their box + divider but must NOT be translated on
   hover — a news/tag/person glyph nudged up-right looks broken. */
.opz-btn:hover .opz-btn__arrow:not(.opz-btn__arrow--icon) svg,
.opz-btn:focus-visible .opz-btn__arrow:not(.opz-btn__arrow--icon) svg {
    transform: translate(3px, -3px);
}

.opz-btn:active {
    transform: scale(0.985);
}

.opz-btn--primary {
    background: var(--opz-signal);
    border-color: var(--opz-signal);
    color: var(--opz-ink);
}

.opz-btn--primary:hover {
    background: var(--opz-ink);
    border-color: var(--opz-ink);
    color: var(--opz-paper);
}

.opz-btn--primary .opz-btn__arrow {
    border-left-color: color-mix(in srgb, var(--opz-ink) 35%, transparent);
}

.opz-btn--primary:hover .opz-btn__arrow {
    border-left-color: color-mix(in srgb, var(--opz-paper) 30%, transparent);
}

.opz-btn--ghost:hover {
    background: var(--opz-ink);
    color: var(--opz-paper);
}

.opz-btn--light {
    border-color: var(--opz-paper);
    color: var(--opz-paper);
}

.opz-btn--light:hover {
    background: var(--opz-paper);
    color: var(--opz-ink);
}

.opz-btn--danger {
    background: var(--opz-ink);
    border-color: var(--opz-ink);
    color: var(--opz-paper);
}

.opz-btn--danger:hover {
    background: var(--opz-signal);
    border-color: var(--opz-signal);
    color: var(--opz-ink);
}

.opz-btn--small {
    height: 40px;
    padding-left: 16px;
    font-size: 11px;
}

.opz-btn--small .opz-btn__arrow {
    width: 38px;
    height: 38px;
}

.opz-btn:focus-visible {
    outline: 2px solid var(--opz-signal);
    outline-offset: 3px;
}

.opz-btn--disabled,
.opz-btn--disabled:hover,
.opz-btn--disabled:focus-visible,
.opz-btn--disabled:active {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
    outline: none;
}

/* ==========================================================================
   OpzLegalPage
   ========================================================================== */

.opz-legal-page {
    max-width: 880px;
    margin: 0 auto;
    padding: clamp(32px, 6vw, 64px) 24px 72px;
}

.opz-legal-eyebrow {
    margin: 0 0 10px;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--opz-ink-4);
}

.opz-legal-title {
    margin: 0 0 8px;
    font-size: clamp(2.2rem, 5vw, 3rem);
    line-height: 1.1;
    letter-spacing: 0.01em;
    color: var(--opz-ink);
}

.opz-legal-updated {
    margin: 0 0 28px;
    font-size: 0.9rem;
    color: var(--opz-ink-3);
}

.opz-legal-article {
    padding: clamp(24px, 4vw, 44px);
    border-radius: var(--opz-panel-radius);
    background: var(--mud-palette-surface);
    border: 1px solid var(--opz-panel-border);
    box-shadow: var(--opz-panel-shadow);
    color: var(--opz-ink-3);
    font-size: 1.02rem;
    line-height: 1.75;
    word-break: break-word;
}

.opz-legal-article > :first-child {
    margin-top: 0;
}

.opz-legal-article > :last-child {
    margin-bottom: 0;
}

.opz-legal-article h2 {
    margin: 1.8em 0 0.6em;
    padding-top: 0.9em;
    border-top: 1px solid var(--opz-hair);
    font-size: 1.3rem;
    line-height: 1.3;
    color: var(--opz-ink);
}

.opz-legal-article h2:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.opz-legal-article p {
    margin: 0 0 1.1em;
}

.opz-legal-article ul {
    margin: 0 0 1.1em;
    padding-left: 1.4em;
}

.opz-legal-article li {
    margin-left: 0;
    margin-bottom: 0.35em;
}

.opz-legal-article a {
    color: var(--opz-signal-deep);
    text-decoration: underline;
    text-decoration-color: color-mix(in srgb, var(--opz-signal-deep) 40%, transparent);
    text-underline-offset: 3px;
}

.opz-legal-article a:hover {
    color: var(--opz-signal);
}