/* ==========================================================================
   apeiron — an instrument, not a dashboard.
   The hyperobject owns the viewport; the chrome floats above it as glass.
   Every color on this page flows from the prompt's own color_logic via
   the --ap-* variables (set from JS on each generation).
   ========================================================================== */

#apeiron-app {
    /* pre-JS defaults: quiet phosphor green */
    --ap-primary: #00ff41;
    --ap-bright: #6dff8f;
    --ap-dim: #0b3f1a;
    --ap-accent: #00ffff;
    --ap-border: #00cc35;
    --ap-border-dim: #0d4d20;
    --ap-negative: #8a5560;
    --ap-negative-border: #4d2830;

    position: fixed;
    inset: 0;
    z-index: 50;
    font-family: 'LibertinusMono', 'Consolas', 'Monaco', 'Liberation Mono', monospace;
    color: var(--ap-primary);
    background-color: #030309;
    background: radial-gradient(
        120% 90% at 50% 38%,
        color-mix(in srgb, var(--ap-dim) 30%, #04040a) 0%,
        #030309 68%,
        #010104 100%
    );
    transition: background 0.8s ease;
    overflow: hidden;
}

#apeiron-app ::selection {
    background: var(--ap-dim);
    color: var(--ap-bright);
}

/* --------------------------------------------------------------------------
   stage — the render is the room
   -------------------------------------------------------------------------- */

#stage {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

#hyperobject-canvas {
    display: block;
}

/* --------------------------------------------------------------------------
   CRT veil — scanlines and vignette over everything, touching nothing
   -------------------------------------------------------------------------- */

#crt-overlay {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    background:
        radial-gradient(ellipse at center, transparent 58%, rgba(0, 0, 0, 0.38) 100%),
        repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.10) 0px, rgba(0, 0, 0, 0.10) 1px, transparent 1px, transparent 3px);
}

/* --------------------------------------------------------------------------
   HUD scaffolding
   -------------------------------------------------------------------------- */

#hud {
    position: absolute;
    inset: 0;
    z-index: 4;
    display: flex;
    flex-direction: column;
    pointer-events: none;
}

#hud a,
#hud button {
    pointer-events: auto;
}

/* top strand ------------------------------------------------------------- */

#hud-top {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    padding: 0.85rem 1.25rem;
}

.ap-word {
    color: var(--ap-bright);
    letter-spacing: 0.4em;
    font-size: 0.95rem;
    text-shadow: 0 0 10px color-mix(in srgb, var(--ap-bright) 55%, transparent);
    animation: ap-phosphor 7s ease-in-out infinite;
}

.ap-sep {
    color: var(--ap-border-dim);
    margin: 0 0.4rem;
}

.ap-home {
    color: var(--ap-dim);
    text-decoration: none;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    transition: color 0.2s, text-shadow 0.2s;
}

.ap-home:hover {
    color: var(--ap-bright);
    text-shadow: 0 0 8px color-mix(in srgb, var(--ap-bright) 50%, transparent);
}

#ap-meta {
    display: flex;
    gap: 1rem;
    align-items: baseline;
    font-size: 0.72rem;
    text-align: right;
}

#template-name {
    color: var(--ap-primary);
    text-transform: uppercase;
    letter-spacing: 0.25em;
}

#palette-name {
    color: var(--ap-accent);
    letter-spacing: 0.05em;
}

#palette-name::before {
    content: '⌁ ';
    color: var(--ap-border-dim);
}

@keyframes ap-phosphor {
    0%, 100% { text-shadow: 0 0 10px color-mix(in srgb, var(--ap-bright) 55%, transparent); }
    50%      { text-shadow: 0 0 16px color-mix(in srgb, var(--ap-bright) 80%, transparent); }
}

/* history rail ------------------------------------------------------------ */

#history-panel {
    position: absolute;
    top: 3.2rem;
    right: 0;
    bottom: 3.2rem;
    width: min(280px, 82vw);
    display: flex;
    flex-direction: column;
    pointer-events: auto;
    background: rgba(2, 4, 8, 0.66);
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
    border: 1px solid var(--ap-border-dim);
    border-right: none;
    border-radius: 3px 0 0 3px;
    transition: transform 0.28s ease;
}

#history-tabs {
    display: flex;
    flex-shrink: 0;
    border-bottom: 1px solid var(--ap-border-dim);
}

.history-tab {
    flex: 1;
    padding: 0.42rem 0.5rem;
    background: transparent;
    border: none;
    color: var(--ap-dim);
    font-family: inherit;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    cursor: pointer;
    transition: color 0.15s, background 0.15s;
}

.history-tab:hover { color: var(--ap-primary); }

.history-tab.active {
    color: var(--ap-accent);
    background: color-mix(in srgb, var(--ap-dim) 25%, transparent);
}

#history-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.3rem 0.25rem;
    font-size: 0.68rem;
    scrollbar-width: thin;
    scrollbar-color: var(--ap-border-dim) transparent;
}

#history-list::-webkit-scrollbar { width: 6px; }
#history-list::-webkit-scrollbar-thumb { background: var(--ap-border-dim); border-radius: 3px; }

.history-entry {
    padding: 0.24rem 0.45rem;
    border-left: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background 0.12s, border-color 0.12s;
}

.history-entry:hover {
    background: rgba(255, 255, 255, 0.045);
}

.history-entry.active {
    border-left-color: var(--ap-accent);
    color: var(--ap-bright);
    background: color-mix(in srgb, var(--ap-dim) 30%, transparent);
}

.history-entry:first-child { color: var(--ap-bright); }
.history-entry:nth-child(n+2):nth-child(-n+5) { color: var(--ap-primary); }
.history-entry:nth-child(n+6) { color: var(--ap-dim); }

.history-entry .star {
    color: var(--ap-accent);
    margin-right: 0.25rem;
}

.history-entry .template-label {
    color: var(--ap-dim);
    font-size: 0.58rem;
    margin-left: 0.35rem;
    letter-spacing: 0.06em;
}

.history-empty {
    padding: 0.8rem 0.6rem;
    color: var(--ap-dim);
    font-style: italic;
}

/* bottom stack ------------------------------------------------------------ */

#hud-bottom {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0 1.25rem 1rem;
    width: min(880px, calc(100% - 320px));
    box-sizing: border-box;
}

#inscription {
    pointer-events: auto;
    background: rgba(1, 3, 5, 0.58);
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
    border: 1px solid var(--ap-border-dim);
    border-left: 3px solid var(--ap-border);
    border-radius: 2px;
    padding: 0.85rem 1.05rem;
    transition: border-color 0.3s;
}

#prompt-display {
    font-size: clamp(0.92rem, 1.5vw, 1.18rem);
    line-height: 1.55;
    white-space: pre-wrap;
    word-break: break-word;
    min-height: 2.4em;
    text-shadow: 0 0 12px color-mix(in srgb, var(--ap-primary) 30%, transparent);
}

/* clickable words: pin a component and regenerate around it */
#prompt-display .tok {
    cursor: pointer;
    border-bottom: 1px dotted transparent;
    transition: border-color 0.15s, background 0.15s;
}

#prompt-display .tok:hover {
    border-bottom-color: currentColor;
    background: rgba(255, 255, 255, 0.05);
}

#prompt-display .tok.pinned {
    border-bottom: 1px solid currentColor;
    background: color-mix(in srgb, currentColor 14%, transparent);
    border-radius: 2px;
    padding: 0 0.15em;
}

#prompt-display .tok.pinned::after {
    content: '⊙';
    font-size: 0.6em;
    vertical-align: super;
    margin-left: 0.15em;
    opacity: 0.8;
}

#negative-prompt {
    margin-top: 0.45rem;
    color: var(--ap-negative);
    font-size: 0.76rem;
    font-style: italic;
    opacity: 0.9;
}

/* anatomy — the component breakdown, folded until asked for */

#anatomy {
    pointer-events: auto;
    max-height: 0;
    overflow: hidden;
    background: rgba(1, 3, 5, 0.58);
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
    border: 1px solid transparent;
    border-radius: 2px;
    transition: max-height 0.3s ease, border-color 0.3s, padding 0.3s;
    padding: 0 1.05rem;
}

#anatomy.open {
    max-height: 38vh;
    overflow-y: auto;
    border-color: var(--ap-border-dim);
    padding: 0.6rem 1.05rem;
    scrollbar-width: thin;
    scrollbar-color: var(--ap-border-dim) transparent;
}

#components-table div {
    font-size: 0.76rem;
    line-height: 1.55;
}

#components-table strong {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.68rem;
}

/* status strand ------------------------------------------------------------ */

#ap-status {
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    flex-wrap: wrap;
    background: rgba(1, 3, 5, 0.58);
    backdrop-filter: blur(7px);
    -webkit-backdrop-filter: blur(7px);
    border: 1px solid var(--ap-border-dim);
    border-radius: 2px;
    padding: 0.42rem 0.8rem;
}

#entropy-meter {
    font-size: 0.7rem;
    letter-spacing: 0.02em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#entropy-meter .e-bar { color: var(--ap-bright); }
#entropy-meter .e-count { color: var(--ap-primary); }
#entropy-meter .e-pct { color: var(--ap-dim); }
#entropy-meter .e-filter { color: var(--ap-accent); }
#entropy-meter .e-pins { color: var(--ap-bright); }

#controls-bar {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.control-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.32rem;
    padding: 0.28rem 0.55rem;
    border: 1px solid var(--ap-border-dim);
    border-radius: 2px;
    background: transparent;
    color: var(--ap-dim);
    font-family: inherit;
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
    user-select: none;
    -webkit-user-select: none;
}

.control-btn:hover {
    border-color: var(--ap-primary);
    color: var(--ap-primary);
    background: color-mix(in srgb, var(--ap-primary) 7%, transparent);
}

.control-btn:active {
    color: var(--ap-bright);
    background: color-mix(in srgb, var(--ap-primary) 14%, transparent);
}

.control-btn.active {
    border-color: var(--ap-accent);
    color: var(--ap-accent);
}

.control-btn:focus-visible {
    outline: 1px dashed var(--ap-accent);
    outline-offset: 2px;
}

.control-btn kbd {
    display: inline-block;
    padding: 0 0.28em;
    border: 1px solid var(--ap-border-dim);
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--ap-accent);
    font-family: inherit;
    font-size: 0.64rem;
    line-height: 1.35;
}

/* --------------------------------------------------------------------------
   responsive: rail folds away, stack goes full width
   -------------------------------------------------------------------------- */

@media (max-width: 1023px) {
    #history-panel { transform: translateX(110%); }
    #history-panel.user-toggled { transform: translateX(0); }

    #hud-bottom { width: 100%; }
}

@media (min-width: 1024px) {
    /* visible by default; H folds it away */
    #history-panel.user-toggled { transform: translateX(110%); }
}

@media (max-width: 640px) {
    #hud-top { padding: 0.6rem 0.8rem; flex-wrap: wrap; }
    #ap-meta { font-size: 0.62rem; gap: 0.6rem; }
    #hud-bottom { padding: 0 0.6rem 0.6rem; gap: 0.4rem; }
    #inscription { padding: 0.6rem 0.75rem; }
    #prompt-display { font-size: 0.85rem; }
    #entropy-meter { font-size: 0.6rem; }
    .control-btn { padding: 0.24rem 0.45rem; font-size: 0.64rem; }
}

@media (prefers-reduced-motion: reduce) {
    #apeiron-app,
    #history-panel,
    #anatomy,
    .control-btn,
    .ap-home {
        transition: none;
    }
    .ap-word { animation: none; }
}