/* Calendar page organizer: every page of a PDF as a card to drag into order. */

:root {
    --co-ink: #1d1f1c;
    --co-muted: #6a6e68;
    --co-line: #dcdfd8;
    --co-chrome: #fbfbf8;
    --co-canvas: #eceee9;
    --co-accent: #1a365d;
    --co-accent-hover: #234b80;
    --co-gold: #d9ae3e;
}

* { box-sizing: border-box; }

html, body { margin: 0; height: 100%; }

body {
    background: var(--co-canvas);
    color: var(--co-ink);
    font: 13px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.co { display: flex; flex-direction: column; min-height: 100vh; }

/* ----- Toolbar ----- */

.co-bar {
    position: sticky; top: 0; z-index: 10;
    display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px;
    padding: 7px 12px; background: var(--co-chrome); border-bottom: 1px solid var(--co-line);
}
.co-group { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.co-actions { margin-left: auto; }
.co-title { font-size: 14px; margin: 0 6px; white-space: nowrap; }
.co-sep { width: 1px; height: 22px; background: var(--co-line); margin: 0 4px; }

.co-btn {
    display: inline-flex; align-items: center; gap: 6px;
    border: 1px solid transparent; background: transparent; color: var(--co-ink);
    padding: 6px 9px; border-radius: 6px; cursor: pointer; font: inherit; font-size: 12px;
    text-decoration: none; white-space: nowrap;
}
.co-btn:hover { background: #e7eaf1; }
.co-btn[disabled] { opacity: .38; cursor: default; background: transparent; }
.co-primary { background: var(--co-accent); color: #fff; }
.co-primary:hover { background: var(--co-accent-hover); color: #fff; }
.co-danger:hover { background: #fbeaea; color: #a3232d; }
.co-quiet { color: var(--co-muted); }
.co-status { color: var(--co-muted); font-size: 12px; white-space: nowrap; }
.co-check { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--co-muted); }

/* ----- The pages ----- */

.co-main { flex: 1; padding: 16px; }

.co-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px; align-items: start;
}

.co-card {
    position: relative; background: #fff; border: 1px solid var(--co-line); border-radius: 10px;
    padding: 8px 8px 6px; box-shadow: 0 2px 6px rgba(0, 0, 0, .06);
    cursor: grab; touch-action: none; user-select: none;
}
.co-card:hover { box-shadow: 0 6px 18px rgba(0, 0, 0, .12); }
.co-card.is-picked { border-color: var(--co-accent); box-shadow: 0 0 0 2px var(--co-gold); }
.co-card.is-dragging { opacity: .35; }
.co-card canvas { display: block; width: 100%; height: auto; border-radius: 4px; background: #f3f4f1; }
.co-card .co-spot {
    position: absolute; top: 2px; left: 2px; min-width: 24px; height: 24px; border-radius: 12px;
    background: var(--co-accent); color: #fff; font-size: 12px; font-weight: 600;
    display: flex; align-items: center; justify-content: center; padding: 0 7px;
}
.co-card .co-from { display: block; text-align: center; color: var(--co-muted); font-size: 11px; padding-top: 5px; }
.co-card .co-tools { position: absolute; top: 4px; right: 4px; display: flex; gap: 2px; opacity: 0; }
.co-card:hover .co-tools, .co-card.is-picked .co-tools { opacity: 1; }
.co-tools button {
    border: 0; background: rgba(255, 255, 255, .92); color: var(--co-ink); border-radius: 6px;
    width: 26px; height: 26px; cursor: pointer; font-size: 11px; box-shadow: 0 1px 3px rgba(0, 0, 0, .2);
}
.co-tools button:hover { background: #fff; color: var(--co-accent); }

/* Where the dragged card will land. */
.co-slot {
    border: 2px dashed var(--co-accent); border-radius: 10px; background: rgba(26, 54, 93, .07);
}
.co-ghost {
    position: fixed; z-index: 30; pointer-events: none; width: 170px; opacity: .92;
    box-shadow: 0 16px 40px rgba(0, 0, 0, .3); border-radius: 10px; overflow: hidden; background: #fff;
}
.co-ghost canvas { display: block; width: 100%; height: auto; }

/* ----- Empty state and dropping ----- */

.co-empty { text-align: center; color: var(--co-muted); padding: 70px 16px; }
.co-empty[hidden] { display: none; }
.co-empty i { font-size: 46px; color: #b9bdb5; }
.co-empty h2 { margin: 14px 0 8px; font-size: 20px; color: var(--co-ink); }
.co-empty p { margin: 0 auto 8px; max-width: 34em; }
.co-small { font-size: 12px; }

.co-drop {
    position: fixed; inset: 12px; z-index: 40; display: flex; align-items: center; justify-content: center;
    border: 3px dashed var(--co-accent); border-radius: 16px; background: rgba(26, 54, 93, .12);
    pointer-events: none;
}
.co-drop[hidden] { display: none; }
.co-drop span {
    background: var(--co-accent); color: #fff; padding: 12px 20px; border-radius: 999px; font-size: 16px;
}

.co-hint { padding: 10px 16px 18px; text-align: center; color: var(--co-muted); font-size: 12px; }

@media (max-width: 760px) {
    .co-bar .co-btn > span { display: none; }
    .co-grid { grid-template-columns: repeat(auto-fill, minmax(132px, 1fr)); gap: 10px; }
    .co-hint { display: none; }
}

/* ----- Saving ----- */

.co-save.is-dirty { background: var(--co-gold); color: #1d1f1c; }
.co-save.is-dirty:hover { background: #e5bd52; }
.co-where { display: block; margin-bottom: 4px; }
.co-where a { color: var(--co-accent); }

.co-modal {
    position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center;
    background: rgba(12, 16, 12, .55); padding: 16px;
}
.co-modal[hidden] { display: none; }
.co-modal-panel {
    display: flex; flex-direction: column; width: min(640px, 100%); max-height: min(70vh, 100%);
    background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 24px 60px rgba(0, 0, 0, .4);
}
.co-modal-panel header {
    display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-bottom: 1px solid var(--co-line);
}
.co-spacer { flex: 1; }
.co-saved-list { overflow-y: auto; padding: 6px; }
.co-saved-row {
    display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 8px; width: 100%;
    border: 0; background: transparent; font: inherit; text-align: left; cursor: pointer; color: var(--co-ink);
}
.co-saved-row:hover { background: #eef1f6; }
.co-saved-open {
    flex: 1; min-width: 0; border: 0; background: transparent; font: inherit; text-align: left;
    cursor: pointer; color: inherit; padding: 0;
}
.co-saved-row b { font-weight: 600; }
.co-saved-row small { color: var(--co-muted); display: block; }
.co-saved-row .co-spacer { flex: 1; }
.co-saved-row .co-kill { color: #a3232d; border: 0; background: transparent; cursor: pointer; padding: 6px; }
.co-saved-note { color: var(--co-muted); font-size: 12px; padding: 12px; }