/* ── Theme transition (only fires during explicit toggle, never on page load) */
.cdn-transitioning *, .cdn-transitioning *::before, .cdn-transitioning *::after {
    transition-property: background-color, border-color, color;
    transition-duration: 150ms;
    transition-timing-function: ease;
}

/* ── No-transition guard (suppresses all transitions during init dark-class flip) */
.cdn-no-transition *, .cdn-no-transition *::before, .cdn-no-transition *::after {
    transition: none !important;
}

/* ── Tab button base ─────────────────────────────────────────────────────── */
.tab-btn {
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    color: #94a3b8;          /* slate-400 */
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    transition: color 0.15s, border-color 0.15s;
}
.tab-btn:hover {
    color: #64748b;          /* slate-500 */
}
.dark .tab-btn {
    color: #71717a;          /* zinc-500 */
}
.dark .tab-btn:hover {
    color: #d4d4d8;          /* zinc-200 */
}

/* ── Tab active state ────────────────────────────────────────────────────── */
.tab-btn.tab-active {
    border-bottom-color: #408A71;   /* brand-500 */
    color: #347360;                 /* brand-600 */
}
.dark .tab-btn.tab-active {
    border-bottom-color: #408A71;
    color: #ffffff;
}

/* ── Tab count badge ─────────────────────────────────────────────────────── */
.tabcount {
    background: #f1f5f9;    /* slate-100 */
    color: #94a3b8;         /* slate-400 */
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border-radius: 99px;
    transition: background 0.15s, color 0.15s;
}
.dark .tabcount {
    background: #27272a;    /* zinc-800 */
    color: #71717a;         /* zinc-500 */
}
.tab-btn.tab-active .tabcount {
    background: #edf7f3;    /* brand-50 */
    color: #347360;         /* brand-600 */
}
.dark .tab-btn.tab-active .tabcount {
    background: rgba(64, 138, 113, 0.2);
    color: #70bfa9;         /* brand-300 */
}

/* ── Drop zone pulse ─────────────────────────────────────────────────────── */
#drop-zone.border-brand-500 {
    animation: pulse-border 1.2s ease-in-out infinite;
}
@keyframes pulse-border {
    0%, 100% { border-color: rgb(64 138 113); }
    50%       { border-color: rgb(112 191 169); }
}

/* ── Progress bar shimmer ────────────────────────────────────────────────── */
#upload-progress-bar {
    position: relative;
    overflow: hidden;
}
#upload-progress-bar::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.18) 50%, transparent 100%);
    animation: shimmer 1.4s infinite;
}
@keyframes shimmer {
    from { transform: translateX(-100%); }
    to   { transform: translateX(200%); }
}

/* ── Panel fade-in ───────────────────────────────────────────────────────── */
[data-panel]:not(.hidden) {
    animation: fadeIn 0.12s ease-out;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(3px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Custom select dropdown ──────────────────────────────────────────────── */
#category-dropdown:not(.hidden) {
    animation: dropIn 0.1s ease-out;
}
@keyframes dropIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Tab bar: hide scrollbar visually, keep scroll functional ────────────── */
.tabs-bar {
    scrollbar-width: none;          /* Firefox */
    -ms-overflow-style: none;       /* IE/Edge */
}
.tabs-bar::-webkit-scrollbar {
    display: none;                  /* Chrome/Safari */
}

/* ── Tab delete button (reveal on hover) ─────────────────────────────────── */
[data-tab-group] [data-delete-tab] {
    opacity: 0;
    transition: opacity 0.15s;
}
[data-tab-group]:hover [data-delete-tab] {
    opacity: 1;
}

/* ── Modal ───────────────────────────────────────────────────────────────── */
#cdn-modal { display: none; }

#cdn-modal-overlay {
    position: fixed; inset: 0; z-index: 9999;
    display: flex; align-items: center; justify-content: center; padding: 1rem;
    background: rgb(0 0 0 / 0.55);
    backdrop-filter: blur(2px);
    opacity: 0;
    transition: opacity 0.15s ease;
}
#cdn-modal-overlay.cdn-modal-open { opacity: 1; }

#cdn-modal-box {
    width: 100%; max-width: 23rem;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 1.125rem;
    padding: 1.5rem;
    box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.35);
    transform: scale(0.94);
    transition: transform 0.15s ease;
}
#cdn-modal-overlay.cdn-modal-open #cdn-modal-box { transform: scale(1); }
.dark #cdn-modal-box { background: #18181b; border-color: #27272a; }

#cdn-modal-header {
    display: flex; align-items: flex-start; gap: 0.75rem; margin-bottom: 1.25rem;
}
#cdn-modal-icon-wrap {
    width: 2.25rem; height: 2.25rem; border-radius: 9999px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
#cdn-modal-icon-wrap.danger { background: rgb(239 68 68 / 0.12); color: #ef4444; }
.dark #cdn-modal-icon-wrap.danger { background: rgb(239 68 68 / 0.18); }
#cdn-modal-icon-wrap.info   { background: rgb(64 138 113 / 0.12); color: #408A71; }
.dark #cdn-modal-icon-wrap.info   { background: rgb(64 138 113 / 0.18); }
#cdn-modal-icon-svg { width: 1rem; height: 1rem; }

.cdn-modal-text { min-width: 0; flex: 1; }
#cdn-modal-title {
    font-weight: 600; font-size: 0.875rem;
    color: #0f172a; margin: 0;
}
.dark #cdn-modal-title { color: #ffffff; }
#cdn-modal-msg {
    margin-top: 0.25rem; font-size: 0.875rem;
    color: #64748b; word-break: break-word; margin-bottom: 0;
}
.dark #cdn-modal-msg { color: #a1a1aa; }

#cdn-modal-actions { display: flex; justify-content: flex-end; gap: 0.5rem; }
.cdn-modal-btn {
    padding: 0.5rem 1rem; font-size: 0.875rem; font-weight: 500;
    border-radius: 0.75rem; border: none; cursor: pointer;
    transition: background-color 0.15s, color 0.15s;
    line-height: 1.25;
}
.cdn-modal-btn-cancel { background: transparent; color: #64748b; }
.cdn-modal-btn-cancel:hover { background: #f1f5f9; }
.dark .cdn-modal-btn-cancel { color: #a1a1aa; }
.dark .cdn-modal-btn-cancel:hover { background: #27272a; }
.cdn-modal-btn-danger { background: #ef4444; color: #fff; font-weight: 600; }
.cdn-modal-btn-danger:hover { background: #dc2626; }
.cdn-modal-btn-primary { background: #408A71; color: #fff; font-weight: 600; }
.cdn-modal-btn-primary:hover { background: #347360; }

/* ── Selected image card ─────────────────────────────────────────────────── */
[data-file-card].is-selected {
    outline: 2px solid #408A71;
    outline-offset: -2px;
}
[data-file-card].is-selected::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(64, 138, 113, 0.15);
    pointer-events: none;
    z-index: 1;
}

/* ── Misc ────────────────────────────────────────────────────────────────── */
input[type="checkbox"].select-checkbox:checked { opacity: 1 !important; }
select { -webkit-appearance: none; appearance: none; }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgb(148 163 184 / 0.25); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgb(148 163 184 / 0.45); }