/*
 * TetraShell CardGrid — reusable card layout with drag/collapse/menu.
 * Spec: docs/specs/CGC_Card_Grid_Convention.md
 */

.ts-cardgrid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    grid-auto-rows: min-content;
    align-items: start;
    gap: 12px;
    padding: 16px;
    overflow-y: auto;
    flex: 1;
    position: relative;
}

.ts-cardgrid-toolbar {
    grid-column: 1 / -1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 4px;
    padding: 0 0 6px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 4px;
}

.ts-cardgrid-filter {
    flex: 0 0 auto;
    width: 140px;
    margin-right: auto;
    background: transparent;
    border: 1px solid transparent;
    border-bottom: 1px solid var(--border);
    color: var(--ink);
    font-family: inherit;
    font-size: 10px;
    padding: 2px 4px;
    outline: none;
}
.ts-cardgrid-filter:focus { border-bottom-color: var(--ink-muted); }
.ts-cardgrid-filter::placeholder { color: var(--ink-muted); opacity: 0.6; }

.ts-cardgrid-tab {
    background: transparent;
    border: none;
    color: var(--ink-muted);
    font-family: inherit;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    cursor: pointer;
    border-radius: 2px;
}
.ts-cardgrid-tab:hover { background: var(--paper-mid); color: var(--ink); }
.ts-cardgrid-tab:active { background: var(--paper-dark); }

.ts-card {
    background: var(--paper-mid);
    border: 1px solid var(--border);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-self: start;
}
.ts-card.dragging { opacity: 0.35; }

.ts-card-head {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 10px 6px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    user-select: none;
}
.ts-card-grip {
    cursor: grab;
    color: var(--ink-muted);
    font-size: 10px;
    padding: 0 2px;
    letter-spacing: -1px;
}
.ts-card-grip:active { cursor: grabbing; }
.ts-card-title {
    flex: 1;
    font-size: 9px;
    color: var(--ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Lifecycle state pill — mirrors PJA.Game state ('idle'|'playing'|'paused'|'ended').
   See ShellCard for the FSM. Card root carries data-state too so callers can
   style the body based on lifecycle. */
.ts-card-state-pill {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--ink-muted, #555);
    margin: 0 6px 0 4px; flex-shrink: 0;
    transition: background 0.15s, box-shadow 0.15s;
}
.ts-card-state-pill[data-state="idle"]    { background: var(--ink-muted, #555); }
.ts-card-state-pill[data-state="paused"]  { background: #ffaf5f; }
.ts-card-state-pill[data-state="ended"]   { background: #5fd7ff; }
.ts-card-state-pill[data-state="playing"] {
    background: #87ff87;
    box-shadow: 0 0 6px rgba(135,255,135,0.6);
    animation: ts-card-pulse 1.4s ease-in-out infinite;
}
@keyframes ts-card-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.55; }
}
.ts-card[data-state="playing"] { border-color: rgba(135,255,135,0.4); }
.ts-card-chevron {
    width: 10px;
    height: 10px;
    color: var(--ink-muted);
    transition: transform 0.15s;
}
.ts-card-chevron::before {
    content: '▾';
    font-size: 10px;
    display: inline-block;
}
.ts-card.collapsed .ts-card-chevron { transform: rotate(-90deg); }

.ts-card-body { padding: 10px 12px; }
.ts-card.collapsed .ts-card-body,
.ts-card.collapsed .ts-card-quote,
.ts-card.collapsed .ts-card-readout,
.ts-card.collapsed .ts-card-slider { display: none; }
.ts-card.collapsed .ts-card-head { border-bottom: none; }
/* Collapsed cards hug their head — important when host grid uses min-content rows */
.ts-card.collapsed { min-height: 0 !important; height: auto; }

/* ── ShellCard extensions (TCC) ──────────────────────────────────────── */

/* Body variant: canvas content fills available space without padding */
.ts-card-body.ts-card-body-canvas {
    padding: 0; flex: 1; position: relative; min-height: 0;
}
.ts-card-body.ts-card-body-canvas > canvas {
    position: absolute; inset: 0; width: 100%; height: 100%;
}

/* Head: ordinal number + sub label + actions slot */
.ts-card-num {
    font-family: var(--font-mono); font-size: 10px;
    color: var(--two); flex-shrink: 0; padding: 0 4px 0 0;
}
.ts-card-sub {
    font-family: var(--font-mono); font-size: 8px;
    color: var(--ink-muted); margin-left: auto;
    text-transform: none; letter-spacing: 0;
}
.ts-card-actions {
    display: inline-flex; gap: 4px; flex-shrink: 0;
}
.ts-card-actions button {
    background: transparent; border: 1px solid var(--border);
    color: var(--ink-muted); padding: 0 6px; cursor: pointer;
    font: inherit; font-size: 9px; line-height: 16px;
    border-radius: 2px;
}
.ts-card-actions button:hover { color: var(--two); border-color: var(--two); }

/* Quote band: italic context line under head */
.ts-card-quote {
    padding: 4px 10px; font-size: 9px; color: var(--ink-muted);
    border-bottom: 1px solid var(--border); font-style: italic;
    background: var(--paper-dark);
}

/* Readout: monospaced status line, usually below body */
.ts-card-readout {
    padding: 3px 10px; font-size: 9px; font-family: var(--font-mono);
    color: var(--ink-muted); flex-shrink: 0;
}
.ts-card-readout span { color: var(--two); }

/* Slider strip */
.ts-card-slider {
    padding: 6px 10px; flex-shrink: 0;
    border-top: 1px solid var(--border); background: var(--paper-dark);
}
.ts-card-slider .ts-card-slider-lab {
    display: flex; justify-content: space-between;
    font-size: 8px; color: var(--ink-muted);
    text-transform: uppercase; letter-spacing: 0.4px; margin-bottom: 3px;
}
.ts-card-slider .ts-card-slider-lab .v {
    color: var(--two); font-family: var(--font-mono);
    text-transform: none; letter-spacing: 0;
}
.ts-card-slider input[type=range] {
    width: 100%; accent-color: var(--two); margin: 0;
}

/* Active state — pulse the title when video / external state highlights it */
.ts-card.ts-card-active .ts-card-title {
    color: var(--two);
    animation: ts-card-pulse 1.6s ease-in-out infinite;
}
@keyframes ts-card-pulse {
    0%, 100% { text-shadow: 0 0 0 transparent; }
    50%      { text-shadow: 0 0 6px var(--two); }
}

/* Free-form layout (cards used outside ShellCardGrid) */
.ts-card.ts-card-standalone {
    min-height: 0; min-width: 0;
}

/* ── Width state (single/double) ── */
.ts-card[data-width="2"] { grid-column: span 2; }
.ts-card[data-width="2"] .ts-card-actions button[data-builtin="width"] {
    color: var(--two); border-color: var(--two);
}
/* Wide-only content: visible only when the host card is double-wide.
   Mark any element inside a card with .ts-card-wide-only — chapters list,
   side panel, etc. Hidden unless card[data-width="2"]; when shown, the
   element keeps whatever `display` its own rules dictate. */
.ts-card:not([data-width="2"]) .ts-card-wide-only { display: none !important; }

/* ── Expand-to-fill ──
   When a card has .ts-card-expanded, its parent gains data-expanded="true".
   Siblings hide; the expanded card spans all columns and fills the row. */
[data-expanded="true"] > .ts-card:not(.ts-card-expanded) { display: none !important; }
.ts-card.ts-card-expanded {
    grid-column: 1 / -1;
    height: 100%;
    min-height: 100% !important;
}
/* Built-in expand button rotates to a "shrink" glyph when active */
.ts-card.ts-card-expanded .ts-card-actions button[data-builtin="expand"]::before {
    content: '⤢ ';
}
.ts-card.ts-card-expanded .ts-card-actions button[data-builtin="expand"] {
    color: var(--two);
    border-color: var(--two);
}

/* ── Details modal — fullscreen overlay opened by the ⓘ action ── */
.ts-card-modal {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.65);
    display: flex; align-items: center; justify-content: center;
    padding: 4vh 4vw;
    z-index: 9999;
    opacity: 0; transition: opacity 0.15s;
    outline: none;
}
.ts-card-modal.open { opacity: 1; }
.ts-card-modal-panel {
    background: var(--paper-mid);
    border: 1px solid var(--border);
    border-radius: 6px;
    width: 100%; max-width: 920px;
    max-height: 92vh;
    display: flex; flex-direction: column;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.ts-card-modal-head {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
}
.ts-card-modal-title {
    flex: 1; font-size: 11px; color: var(--ink);
    text-transform: uppercase; letter-spacing: 0.6px;
}
.ts-card-modal-close {
    background: transparent; border: 1px solid var(--border);
    color: var(--ink-muted); padding: 0 8px; cursor: pointer;
    font: inherit; font-size: 14px; line-height: 18px; border-radius: 2px;
}
.ts-card-modal-close:hover { color: var(--three, #ff6b6b); border-color: var(--three, #ff6b6b); }
.ts-card-modal-body {
    padding: 16px 18px; overflow-y: auto;
    font-size: 11px; line-height: 1.55; color: var(--ink);
}
.ts-card-modal-body h3, .ts-card-modal-body h4 {
    color: var(--four); font-size: 11px; text-transform: uppercase;
    letter-spacing: 0.8px; margin: 14px 0 6px;
}
.ts-card-modal-body h3:first-child, .ts-card-modal-body h4:first-child { margin-top: 0; }
.ts-card-modal-body p { margin: 6px 0; }
.ts-card-modal-body code {
    background: var(--paper-dark); padding: 1px 5px; border-radius: 2px;
    color: var(--two); font-size: 10px;
}
.ts-card-modal-body em { color: var(--two); font-style: normal; }
.ts-card-modal-body blockquote {
    margin: 8px 0 8px 12px; padding-left: 10px;
    border-left: 2px solid var(--four); color: var(--ink-muted);
    font-style: italic;
}
.ts-card-modal-body ul, .ts-card-modal-body ol { margin: 6px 0 6px 22px; padding: 0; }
.ts-card-modal-body li { margin: 3px 0; }

/* ── Hidden / closed cards ── */
.ts-card.ts-card-hidden { display: none !important; }
/* Close button visual emphasis */
.ts-card-actions button[data-builtin="close"] {
    font-size: 12px; line-height: 14px; padding: 0 5px;
}
.ts-card-actions button[data-builtin="close"]:hover {
    color: var(--three, #ff6b6b); border-color: var(--three, #ff6b6b);
}

.ts-card-ghost {
    position: fixed;
    pointer-events: none;
    opacity: 0.7;
    z-index: 9999;
    max-width: 320px;
    background: var(--paper-mid);
    border: 1px solid var(--accent, var(--ink-muted));
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

.ts-card-drop-indicator {
    display: none;
    width: 3px;
    background: var(--accent, var(--two));
    border-radius: 2px;
    margin: 0 -6px;
    align-self: stretch;
}
.ts-card-drop-indicator.visible { display: block; }