/* ===================================================================
   Departures Tiles + Series View — Phase 3 (rebuild 2026-05-04)
   --------------------------------------------------------------------
   Three states based on body classes:
     (none)                          → lanes mode (legacy departures-browse)
     .dt-tiles-mode                  → tiles landing (overlay shown)
     .dt-tiles-mode.dt-series-active → per-series scoped view

   The legacy lanes/board are completely hidden in tiles mode (both
   landing and series-view). When a series is active, a clean scoped
   panel renders independently — hero + series board + series lane.
   No CSS-filter hacks on existing cards. No Frankenstein.
   =================================================================== */

/* === Hide legacy lanes whenever tiles mode is on === */
body.dt-tiles-mode #dep-board-wrap,
body.dt-tiles-mode .dep-lane,
body.dt-tiles-mode .dep-lane-divider {
    display: none !important;
}

/* === Tiles landing visible only when in tiles mode AND no series active === */
.dt-overlay { display: none; }
body.dt-tiles-mode .dt-overlay { display: block; }
body.dt-tiles-mode.dt-series-active .dt-overlay { display: none; }

/* === Series-scoped view shows only when a series is active === */
/* Animated entry — slide up + fade in. Sits above the tiles overlay so the
   transition reads as "going into" the series, not as a same-layer swap. */
.dt-series-view {
    opacity: 0;
    pointer-events: none;
    transform: translateY(24px);
    transition: opacity 280ms cubic-bezier(0.4, 0, 0.2, 1),
                transform 280ms cubic-bezier(0.4, 0, 0.2, 1);
}
body.dt-tiles-mode.dt-series-active .dt-series-view {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
    .dt-series-view { transition: opacity 150ms ease; transform: none; }
}

/* === Hide the existing departures header when in series-view === */
body.dt-tiles-mode.dt-series-active .departures-header { display: none; }


/* ===== Chooser + side switching (2026-05-24) =====
   The .dt-overlay element has a data-dt-view attribute owned by tiles JS:
       data-dt-view="chooser"     → show .dt-chooser only
       data-dt-view="stamps"      → show .dt-side-stamps only
       data-dt-view="challenges"  → show .dt-side-challenges only
   Display is owned exclusively by the state machine selectors below — base
   layout rules deliberately omit `display` so they can't override the state.
   Qualifying via .dt-overlay (1,1,0) beats the bare .dt-chooser (0,1,0). */
.dt-overlay .dt-chooser    { display: none; }
.dt-overlay .dt-side       { display: none; }
.dt-overlay .dt-right-now  { display: none; }
.dt-overlay[data-dt-view="chooser"]    .dt-chooser        { display: flex; }
.dt-overlay[data-dt-view="chooser"]    .dt-right-now      { display: block; }
.dt-overlay[data-dt-view="stamps"]     .dt-side-stamps    { display: block; }
.dt-overlay[data-dt-view="challenges"] .dt-side-challenges{ display: block; }

/* Right Now strip — compact flipflap above the chooser, only visible on
   the chooser landing. Surfaces what's running at a glance for habitual
   daily check-ins (chooser would otherwise add 2 taps to answer the
   "what's hot" question). Reuses #dt-cadence-board-wrap + mount from the
   parked flipflap, so _renderBoard() wires in unchanged. */
.dt-right-now {
    margin: 16px 16px 8px;
}
.dt-right-now .dt-section-label {
    margin: 0 0 8px;
    padding: 0;
    font-size: 10px;
    letter-spacing: 0.18em;
    opacity: 0.55;
}
.dt-right-now .dt-cadence-board {
    margin: 0;
}

/* Chooser landing — two big category tiles, stacked on mobile.
   No `display` here on purpose; the state machine above owns it. */
.dt-chooser {
    padding: 32px 16px 80px;
    flex-direction: column;
    gap: 16px;
}
.dt-chooser-tile {
    appearance: none;
    background: var(--paper, #F4F1EA);
    border: 1px solid rgba(26, 26, 26, 0.12);
    border-radius: 18px;
    padding: 32px 24px;
    cursor: pointer;
    text-align: center;
    color: var(--ink, #1a1a1a);
    font-family: var(--font-ui, 'Figtree', sans-serif);
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 14px rgba(26, 26, 26, 0.08);
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}
.dt-chooser-tile:hover, .dt-chooser-tile:focus-visible {
    transform: translateY(-2px);
    background: #FFFDF7;
    box-shadow: 0 8px 24px rgba(26, 26, 26, 0.14);
    outline: none;
}
.dt-chooser-tile:active { transform: translateY(0); }
.dt-chooser-tile-icon {
    font-size: 40px;
    line-height: 1;
}
.dt-chooser-tile-name {
    font-family: var(--font-display, 'Archivo Black', sans-serif);
    font-size: 22px;
    letter-spacing: 0.06em;
}
.dt-chooser-tile-count {
    font-family: var(--font-display, 'Archivo Black', sans-serif);
    font-size: 13px;
    letter-spacing: 0.08em;
    color: #b38728;
    text-transform: uppercase;
}
.dt-chooser-tile-sub {
    font-size: 13px;
    opacity: 0.6;
}
@media (min-width: 600px) {
    .dt-chooser { flex-direction: row; padding-top: 48px; }
    .dt-chooser-tile { flex: 1; }
}
@media (prefers-reduced-motion: reduce) {
    .dt-chooser-tile { transition: none; }
}

/* Back-to-chooser button — visible pill on the cream/dark backdrop. */
.dt-back-to-chooser {
    appearance: none;
    background: var(--paper, #F4F1EA);
    border: 1px solid rgba(26, 26, 26, 0.18);
    color: var(--ink, #1a1a1a);
    opacity: 1;
    font-family: var(--font-ui, 'Figtree', sans-serif);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 10px 16px;
    margin: 12px 0 4px 16px;
    border-radius: var(--radius-pill, 100px);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    transition: background 180ms ease, transform 120ms ease, box-shadow 180ms ease;
}
.dt-back-to-chooser:hover {
    background: #FFFDF7;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
}
.dt-back-to-chooser:active {
    transform: translateY(1px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Cadence badge on challenge tiles (DAILY / WEEKLY / MONTHLY). */
.dt-tile-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.55);
    color: #FFD93D;
    font-family: var(--font-display, 'Archivo Black', sans-serif);
    font-size: 9px;
    letter-spacing: 0.1em;
    padding: 4px 8px;
    border-radius: 100px;
    z-index: 2;
}

/* ===== Tiles landing layout ===== */
.dt-overlay { padding: 0 0 80px; }

/* === Cadence board (flipflap with Daily/Weekly/Monthly pill nav) ===
   Replaces the old Right Now strip. Owns the airport metaphor in the
   landing page — DeparturesBoard from departures-board.js mounts inside
   .dt-cadence-board-mount and re-flips when the active pill changes. */
.dt-cadence-board {
    margin: 16px 16px 0;
}
.dt-cadence-pills {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}
.dt-cadence-pill {
    flex: 1;
    background: var(--paper, #F4F1EA);
    border: 1px solid rgba(26, 26, 26, 0.12);
    color: rgba(26, 26, 26, 0.7);
    font-family: var(--font-display, sans-serif);
    font-size: 14px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 18px 16px;
    border-radius: 12px;
    cursor: pointer;
    transition: background 180ms ease, color 180ms ease, border-color 180ms ease, transform 120ms ease;
}
.dt-cadence-pill:hover {
    background: #FFFDF7;
    color: var(--ink, #1a1a1a);
    border-color: rgba(26, 26, 26, 0.2);
}
.dt-cadence-pill:active { transform: translateY(1px); }
.dt-cadence-pill.is-active {
    background: var(--ink, #1a1a1a);
    color: var(--accent-gold, #FFD93D);
    border-color: var(--ink, #1a1a1a);
}
.dt-cadence-board-mount {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 60px;
}

/* === Plain cream cards (replaces the parked flipflap board) === */
.dt-cadence-card {
    appearance: none;
    background: var(--paper, #F4F1EA);
    border: 1px solid rgba(26, 26, 26, 0.12);
    border-radius: 12px;
    padding: 16px 18px;
    cursor: pointer;
    text-align: left;
    color: var(--ink, #1a1a1a);
    font-family: var(--font-ui, 'Figtree', sans-serif);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: 0 2px 8px rgba(26, 26, 26, 0.06);
    transition: background 180ms ease, box-shadow 180ms ease, transform 120ms ease;
}
.dt-cadence-card:hover {
    background: #FFFDF7;
    box-shadow: 0 4px 14px rgba(26, 26, 26, 0.1);
}
.dt-cadence-card:active { transform: translateY(1px); }
.dt-cadence-card.is-done {
    background: rgba(39, 174, 96, 0.12);
    border-color: rgba(39, 174, 96, 0.45);
    color: #1f8a4a;
}
.dt-cadence-card.is-done .dt-cadence-card-title {
    color: #1f8a4a;
}
.dt-cadence-card-title {
    flex: 1;
    min-width: 0;
    font-family: var(--font-display, 'Archivo Black', sans-serif);
    font-size: 15px;
    letter-spacing: 0.04em;
    line-height: 1.25;
    text-transform: uppercase;
    word-wrap: break-word;
}
.dt-cadence-card-meta {
    font-family: var(--font-display, sans-serif);
    font-size: 12px;
    letter-spacing: 0.1em;
    padding: 6px 10px;
    border-radius: var(--radius-pill, 100px);
    flex-shrink: 0;
}
.dt-cadence-card-meta--done {
    background: #27ae60;
    color: #fff;
    white-space: nowrap;
}
.dt-cadence-card-meta--progress {
    background: rgba(26, 26, 26, 0.08);
    color: var(--ink, #1a1a1a);
    font-variant-numeric: tabular-nums;
}
.dt-cadence-card-meta--find {
    background: rgba(179, 135, 40, 0.14);
    color: #b38728;
}
/* Sponsored ticket (#3): deliberately breaks the kindle-cream so partner
   content reads as distinct. Visual-only — no sponsor logic lives here. */
.dt-cadence-card.is-sponsored {
    position: relative;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f0f23 100%);
    border-color: rgba(255, 217, 61, 0.55);
    color: #F4F1EA;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25), inset 0 0 0 1px rgba(255, 217, 61, 0.15);
    padding-top: 24px;
}
.dt-cadence-card.is-sponsored:hover {
    background: linear-gradient(135deg, #20203a 0%, #14142b 100%);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.32);
}
.dt-cadence-card.is-sponsored .dt-cadence-card-title { color: #F4F1EA; }
.dt-cadence-card.is-sponsored.is-done { opacity: 0.6; }
.dt-cadence-card.is-sponsored .dt-cadence-card-meta--progress {
    background: rgba(255, 255, 255, 0.12);
    color: #F4F1EA;
}
.dt-cadence-card-sponsor {
    position: absolute;
    top: 8px;
    left: 18px;
    font-family: var(--font-display, sans-serif);
    font-size: 9px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-weight: 700;
    color: #1a1a1a;
    background: linear-gradient(135deg, #FFD93D 0%, #f0b429 100%);
    padding: 2px 8px;
    border-radius: var(--radius-pill, 100px);
    max-width: calc(100% - 36px);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.dt-board-empty {
    padding: 24px 18px;
    text-align: center;
    color: rgba(26, 26, 26, 0.55);
    font-family: var(--font-ui, 'Figtree', sans-serif);
    font-size: 13px;
}

/* === Cadence progress strip (1/3 today) === */
.dt-cadence-progress {
    margin: 4px 16px 10px;
    font-family: var(--font-display, sans-serif);
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: rgba(0, 0, 0, 0.55);
}
.dt-cadence-progress-text {
    background: var(--paper-soft, #ede9df);
    padding: 4px 10px;
    border-radius: var(--radius-pill, 100px);
    display: inline-block;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

/* === All-done "ring closed" celebration tile ===
   Replaces the board entirely when data.all_done is true. Lives inside
   .dt-side-challenges with the same horizontal margins as the board so
   the swap is visually drop-in. */
.dt-cadence-done {
    margin: 0 16px 24px;
    background: linear-gradient(135deg, #bf953f 0%, #fcf6ba 40%, #b38728 60%, #fbf5b7 100%);
    border-radius: 18px;
    padding: 36px 24px 30px;
    text-align: center;
    color: var(--ink, #1a1a1a);
    box-shadow: 0 12px 32px rgba(191, 149, 63, 0.25);
    position: relative;
    overflow: hidden;
}
.dt-cadence-done::before {
    /* Subtle radial sheen so it doesn't feel like a flat coupon */
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(255, 255, 255, 0.45), transparent 55%);
    pointer-events: none;
}
.dt-cadence-done-ring {
    width: 72px;
    height: 72px;
    margin: 0 auto 12px;
    background: var(--ink, #1a1a1a);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25), inset 0 0 0 3px rgba(255, 255, 255, 0.18);
    position: relative;
    z-index: 1;
}
.dt-cadence-done-ring svg {
    width: 44px;
    height: 44px;
    stroke: var(--gold-2, #fcf6ba);
}
.dt-cadence-done-ring svg circle {
    stroke: var(--gold-2, #fcf6ba);
    opacity: 0.55;
}
.dt-cadence-done-headline {
    font-family: var(--font-display, sans-serif);
    font-size: 22px;
    letter-spacing: 2px;
    margin-bottom: 4px;
    position: relative;
    z-index: 1;
}
.dt-cadence-done-sub {
    font-family: var(--font-ui, sans-serif);
    font-size: 14px;
    color: rgba(0, 0, 0, 0.65);
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
}
.dt-cadence-done-bonus {
    display: inline-block;
    background: var(--ink, #1a1a1a);
    color: var(--gold-flat, #FFD93D);
    font-family: var(--font-display, sans-serif);
    font-size: 12px;
    letter-spacing: 0.06em;
    padding: 8px 16px;
    border-radius: var(--radius-pill, 100px);
    position: relative;
    z-index: 1;
}
.dt-cadence-done-bonus:empty { display: none; }

/* === Empty state inside the mount (no templates yet) === */
.dt-cadence-board.is-cream .dt-board-empty {
    color: rgba(0, 0, 0, 0.55);
    text-align: center;
    padding: 24px 16px;
    font-family: var(--font-ui, sans-serif);
    font-size: 14px;
}

/* === DeparturesBoard inside the cadence mount ===
   Tightened to 14 value cells (matches the JS valueLen) so the whole row
   fits a 320px-wide phone container without overflow. Long task titles
   get ellipsis-truncated by the JS. */

/* Section labels */
.dt-section-label {
    padding: 24px 20px 8px;
    font-family: var(--font-display, sans-serif);
    font-size: 12px;
    letter-spacing: 2px;
    color: rgba(0, 0, 0, 0.55);
    text-transform: uppercase;
}

/* Series tile grid */
.dt-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 0 16px;
}
.dt-tile {
    aspect-ratio: 4 / 5;
    border-radius: 14px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
    transition: transform 200ms ease, box-shadow 200ms ease;
    background: linear-gradient(135deg, #4a4a4a 0%, #1a1a1a 100%);
}
.dt-tile:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
}
.dt-tile-art {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}
.dt-tile-fallback-icon {
    position: absolute;
    top: 25%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 60px;
    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.3));
    opacity: 0.7;
}
.dt-tile-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 30%, rgba(0, 0, 0, 0.85) 100%);
}
.dt-tile-text {
    position: absolute;
    bottom: 14px;
    left: 14px;
    right: 14px;
    color: #fff;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}
.dt-tile-name {
    font-family: var(--font-display, sans-serif);
    font-size: 16px;
    line-height: 1.05;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.dt-tile-meta { font-size: 11px; opacity: 0.85; }
.dt-tier-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.6);
    color: #fcf6ba;
    font-family: var(--font-display, sans-serif);
    font-size: 9px;
    letter-spacing: 1.2px;
    padding: 4px 8px;
    border-radius: 4px;
    text-transform: uppercase;
}
.dt-tier-badge.is-token { color: #cccccc; }
.dt-grid-empty {
    padding: 32px 20px;
    text-align: center;
    color: rgba(0, 0, 0, 0.5);
    font-style: italic;
    font-size: 14px;
}


/* ===================================================================
   SERIES-SCOPED VIEW (the entered-a-world experience)
   =================================================================== */

.dt-series-view { padding: 0 0 80px; }

/* Sticky back-strip — cream paper to match the rest of the Departures surface. */
.dt-back-strip {
    position: sticky;
    top: 0;
    z-index: 25;
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--paper, #F4F1EA);
    color: var(--ink, #1a1a1a);
    padding: 12px 16px;
    border-bottom: 1px solid rgba(26, 26, 26, 0.12);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
.dt-back-btn {
    background: #FFFDF7;
    border: 1px solid rgba(26, 26, 26, 0.18);
    color: var(--ink, #1a1a1a);
    font-family: var(--font-ui, 'Figtree', sans-serif);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
    cursor: pointer;
    padding: 8px 14px;
    border-radius: var(--radius-pill, 100px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
    transition: background 180ms ease, box-shadow 180ms ease, transform 120ms ease;
    flex-shrink: 0;
}
.dt-back-btn:hover {
    background: #fff;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}
.dt-back-btn:active { transform: translateY(1px); }
.dt-back-current {
    flex: 1;
    min-width: 0;
    color: var(--ink, #1a1a1a);
    font-family: var(--font-display, sans-serif);
    font-size: 14px;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}
/* #17 — Map view button parked. Originally surfaced on the Welcome-to scoped
   view; hidden in CSS so the JS toggle can't reveal it until we bring it back. */
.dt-mapview-btn {
    display: none !important;
}

/* Hero block */
.dt-hero {
    margin: 12px 16px 0;
    height: 140px;
    border-radius: 14px;
    overflow: hidden;
    position: relative;
    background: linear-gradient(135deg, #4a4a4a 0%, #1a1a1a 100%);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
}
.dt-hero-art {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}
.dt-hero-fallback-icon {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 64px;
    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.35));
    opacity: 0.7;
}
.dt-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 20%, rgba(0, 0, 0, 0.85) 100%);
}
.dt-hero-text {
    position: absolute;
    bottom: 14px;
    left: 16px;
    right: 16px;
    color: #fff;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.55);
}
.dt-hero-name {
    font-family: var(--font-display, sans-serif);
    font-size: 22px;
    margin-bottom: 4px;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.dt-hero-meta { font-size: 12px; opacity: 0.9; letter-spacing: 0.5px; }

/* Scoped flipflap board */
.dt-series-board {
    margin: 16px 16px 0;
    background: var(--ink, #1a1a1a);
    color: var(--accent-gold, #FFD93D);
    border-radius: 8px;
    padding: 12px 16px;
    font-family: 'JetBrains Mono', monospace;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}
.dt-series-board-row {
    display: grid;
    grid-template-columns: 70px 1fr auto;
    gap: 10px;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 217, 61, 0.18);
    align-items: baseline;
    font-size: 11px;
    letter-spacing: 1px;
}
.dt-series-board-row:last-child { border-bottom: none; }
.dt-sb-status {
    font-family: var(--font-display, sans-serif);
    font-size: 9px;
    color: rgba(255, 217, 61, 0.7);
    letter-spacing: 1.5px;
}
.dt-sb-meta { text-align: right; }
.dt-series-board-empty {
    padding: 6px 0;
    font-size: 11px;
    color: rgba(255, 217, 61, 0.5);
    letter-spacing: 1px;
}

/* Scoped lane */
.dt-series-lane { margin-top: 22px; }
.dt-series-lane-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding: 0 16px;
    margin-bottom: 8px;
}
.dt-series-lane-title {
    font-family: var(--font-display, sans-serif);
    font-size: 12px;
    letter-spacing: 1.5px;
    color: var(--ink, #1a1a1a);
}
.dt-series-lane-count {
    font-size: 11px;
    color: rgba(0, 0, 0, 0.55);
    letter-spacing: 1px;
    text-transform: uppercase;
}
.dt-series-lane-scroll {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 4px 16px 12px;
}
.dt-series-card {
    width: auto;
    aspect-ratio: 3 / 4;
    border-radius: 12px;
    background: var(--paper, #F4F1EA);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(26, 26, 26, 0.1);
    padding: 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    transition: transform 200ms ease, box-shadow 200ms ease, background 200ms ease;
    position: relative;
    overflow: hidden;
}
.dt-series-card:hover {
    transform: translateY(-2px);
    background: #FFFDF7;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}
.dt-series-card[data-tier="stamp"] { border-left: 3px solid #b38728; }
.dt-series-card[data-tier="token"] { border-left: 3px solid #888; }

/* Welcome-to greyscale-til-earned. data-earned is only set on cards in
   the "Welcome to" series; other series render unchanged. The filter and
   opacity transitions are what Chunk 3 (snap-to-colour) animates when a
   freshly-earned stamp's data-earned attribute flips from false → true. */
.dt-series-card[data-earned="false"] .dt-series-card-img {
    filter: grayscale(1) brightness(0.7);
    transition: filter 600ms ease;
}
.dt-series-card[data-earned="true"] .dt-series-card-img {
    transition: filter 600ms ease;
}
.dt-series-card[data-earned="false"] .dt-series-card-title,
.dt-series-card[data-earned="false"] .dt-series-card-meta {
    opacity: 0.55;
    transition: opacity 600ms ease;
}
.dt-series-card[data-earned="true"] .dt-series-card-title,
.dt-series-card[data-earned="true"] .dt-series-card-meta {
    transition: opacity 600ms ease;
}

/* Celebration pop for the snap-to-colour moment. Added once at render time
   on freshly-earned cards; the keyframe self-completes. Gold glow nods to
   the D-PAD brand palette. */
@keyframes dt-stamp-pop {
    0%   { transform: scale(1);    box-shadow: var(--shadow-sm, 0 2px 8px rgba(0,0,0,0.15)); }
    30%  { transform: scale(1.08); box-shadow: 0 0 28px rgba(255, 217, 61, 0.55); }
    100% { transform: scale(1);    box-shadow: var(--shadow-sm, 0 2px 8px rgba(0,0,0,0.15)); }
}
.dt-series-card.is-just-earned {
    animation: dt-stamp-pop 1200ms ease-out;
}

@media (prefers-reduced-motion: reduce) {
    .dt-series-card.is-just-earned { animation: none; }
    .dt-series-card[data-earned] .dt-series-card-img,
    .dt-series-card[data-earned] .dt-series-card-title,
    .dt-series-card[data-earned] .dt-series-card-meta { transition: none; }
}

.dt-series-card-img {
    flex: 1;
    border-radius: 8px;
    margin-bottom: 10px;
    background-size: cover;
    background-position: center;
    background-color: rgba(0, 0, 0, 0.05);
    min-height: 0;
    overflow: hidden;
}
.dt-series-card-title {
    font-family: var(--font-display, sans-serif);
    font-size: 13px;
    line-height: 1.2;
    color: var(--ink, #1a1a1a);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    margin-bottom: 3px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.dt-series-card-meta {
    font-size: 11px;
    color: rgba(0, 0, 0, 0.55);
}
.dt-series-empty {
    margin: 18px 16px;
    padding: 24px;
    text-align: center;
    background: rgba(0, 0, 0, 0.03);
    border-radius: 10px;
    color: rgba(0, 0, 0, 0.5);
    font-size: 13px;
    font-style: italic;
}

@media (prefers-reduced-motion: reduce) {
    .dt-tile, .dt-series-card { transition: none; }
}