:root {
    --md-sys-color-background: #F8F9FA;
    --md-sys-color-on-background: #1A1A1A;
    --md-sys-color-surface: #FFFFFF;
    --md-sys-color-surface-container: #F0F2F5;
    --md-sys-color-primary: #0047bb;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-outline: #DADCE0;
    --md-sys-color-error: #B3261E;
    --font-family: 'Poppins', sans-serif;
}

body { 
    font-family: var(--font-family); margin: 0; background: var(--md-sys-color-background); 
    color: var(--md-sys-color-on-background); overflow-x: hidden;
    /* Columna de alto completo para que la barra de acción quede pegada abajo
       aunque haya pocos resultados; sin esto el sticky la deja flotando donde
       termina el contenido. */
    display: flex; flex-direction: column; min-height: 100dvh;
}

input, select, button, textarea {
    font-family: inherit;
}

body.no-scroll { overflow: hidden; }

/* Una clase con display: (.upload-preview es flex) le gana al display:none que
   el user-agent le da a [hidden], y el elemento se ve igual. Esto lo zanja. */
[hidden] { display: none !important; }

/* Header & Search Bar */
.top-app-bar {
    display: flex; flex-direction: column; padding: 12px 24px; background: var(--md-sys-color-surface);
    position: sticky; top: 0; z-index: 50; box-shadow: 0 1px 8px rgba(0,0,0,0.08);
}
.header-top-row { display: flex; align-items: flex-start; justify-content: space-between; width: 100%; gap: 20px; flex-wrap: wrap; }

.search-filter-wrapper { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; flex-grow: 1; }

.header-search { flex-grow: 1; max-width: 600px; min-width: 250px; }
.search-bar-container { position: relative; display: flex; align-items: center; }
.search-bar-container input {
    width: 100%; padding: 12px 48px 12px 24px; border-radius: 28px;
    border: 1px solid var(--md-sys-color-outline); background: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-on-background); font-size: 0.95rem; outline: none; transition: border-color 0.2s;
}
.search-bar-container input:focus { border-color: var(--md-sys-color-primary); }
.search-bar-container .search-btn {
    position: absolute; right: 8px; display: flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; background: transparent; color: #666; border-radius: 50%; padding: 0;
}
.search-bar-container .search-btn:hover { color: var(--md-sys-color-primary); }



/* Indicador de Selección */
.selected-image-indicator {
    display: flex; align-items: center; gap: 8px;
    background: var(--md-sys-color-surface-container);
    padding: 4px 12px 4px 4px; border-radius: 20px;
    text-decoration: none; color: var(--md-sys-color-on-background);
    border: 1px solid var(--md-sys-color-outline);
    width: 250px; max-width: 100%; box-sizing: border-box;
    transition: all 0.2s; flex-shrink: 0;
}
.selected-image-indicator:hover { border-color: var(--md-sys-color-primary); background: #e0e4f0; }
.selected-image-indicator img { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.selected-image-indicator span#selectedImageTitle { 
    font-size: 0.85rem; white-space: nowrap; overflow: hidden; 
    text-overflow: ellipsis; font-weight: 500;
    flex: 1; min-width: 0;
}
.selected-image-indicator .material-symbols-outlined { font-size: 16px; color: var(--md-sys-color-primary); flex-shrink: 0; }

/* Nav & UI Components */
button {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 8px 16px; border-radius: 20px; border: none; font-weight: 500; cursor: pointer; transition: all 0.2s;
}
button.primary { background: var(--md-sys-color-primary); color: var(--md-sys-color-on-primary); }
button.tonal { background: var(--md-sys-color-surface-container); color: var(--md-sys-color-on-background); }
button.icon-btn { background: transparent; color: var(--md-sys-color-on-background); border-radius: 50%; padding: 10px; }
button:hover { filter: brightness(0.95); }

/* Filtros */
.filter-section { display: flex; animation: fadeIn 0.3s ease; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filters select {
    background: var(--md-sys-color-surface-container); color: var(--md-sys-color-on-background);
    border: 1px solid var(--md-sys-color-outline); padding: 8px 36px 8px 16px; border-radius: 20px;
    outline: none; cursor: pointer; font-size: 0.9rem;
    appearance: none; -webkit-appearance: none; -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' height='20' viewBox='0 -960 960 960' width='20'%3E%3Cpath fill='%231A1A1A' d='M480-360 280-560h400L480-360Z'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 12px center;
}

/* Empty State */
.empty-state {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    height: 60vh; color: #666; text-align: center; animation: fadeIn 0.4s ease;
}
.empty-state-icon-wrapper { position: relative; display: inline-block; margin-bottom: 16px; }
.empty-state .empty-icon { font-size: 72px; color: #AECBFA; margin-bottom: 0; }
.empty-state .flash-icon { 
    position: absolute; top: -8px; right: -12px; font-size: 36px; color: #669DF6; 
    animation: flashAnim 1.5s infinite alternate ease-in-out; 
}
.empty-state p { font-size: 1.1rem; margin: 0; }

/* Masonry Grid */
.main-content { padding: 24px; flex: 1; }
.grid { column-count: 1; column-gap: 16px; }
@media (min-width: 600px) { .grid { column-count: 2; } }
@media (min-width: 900px) { .grid { column-count: 3; } }
@media (min-width: 1200px) { .grid { column-count: 4; } }

.card {
    background: var(--md-sys-color-surface-container); border-radius: 12px; margin-bottom: 16px;
    break-inside: avoid; overflow: hidden; cursor: pointer; display: inline-block; width: 100%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05); transition: transform 0.2s, opacity 0.2s; position: relative;
}
.card:hover { transform: scale(1.02); }
.card img { width: 100%; height: auto; display: block; }

.card.hidden-origin { opacity: 0; pointer-events: none; transform: scale(0.95); }
.card.selected { outline: 4px solid var(--md-sys-color-primary); outline-offset: -4px; }
.card .overlay-icon {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    background: rgba(0, 71, 187, 0.85); color: white;
    border-radius: 50%; padding: 16px; font-size: 32px;
    opacity: 0; transition: opacity 0.2s, transform 0.2s; pointer-events: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.card.selected .overlay-icon { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }

.load-more-container { display: flex; justify-content: center; margin: 32px 0; }

/* Modals Generales */
.modal-overlay {
    display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.85);
    backdrop-filter: blur(8px); z-index: 100; align-items: center; justify-content: center;
    transition: background 0.3s ease;
}
.modal-overlay.active { display: flex; animation: fadeInBg 0.3s ease forwards; }
.modal-overlay.closing { background: rgba(255, 255, 255, 0) !important; backdrop-filter: blur(0px); }

.dialog {
    background: var(--md-sys-color-surface); padding: 24px; border-radius: 28px; width: 100%; max-width: 400px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2); box-sizing: border-box; animation: fadeIn 0.3s ease;
}
.dialog-title { margin-top: 0; display: flex; align-items: center; gap: 8px; }
.dialog input { width: 100%; padding: 12px; border-radius: 8px; margin: 16px 0; background: var(--md-sys-color-surface-container); border: 1px solid var(--md-sys-color-outline); color: var(--md-sys-color-on-background); box-sizing: border-box;}
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

/* Info Dialog Específico */
.info-dialog { position: relative; max-width: 500px; margin: 0 24px; }
.close-info-btn { position: absolute; top: 16px; right: 16px; margin: 0; padding: 8px; }

/* ----- Fullscreen Image Viewer ----- */
#imageModal { z-index: 40; }

.image-dialog { width: 100vw; height: 100%; display: flex; flex-direction: column; align-items: center; overflow: hidden; transition: opacity 0.2s ease; }
.image-viewer-container {
    position: relative; width: 100vw; height: 100%; display: flex; align-items: center; justify-content: center;
    cursor: grab; touch-action: none; overflow: hidden;
}
.image-viewer-container:active { cursor: grabbing; }

.image-viewer-container img { 
    max-width: 100%; max-height: 100%; object-fit: contain; 
    pointer-events: none; transform-origin: center; 
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    outline: 1px solid #CCC; 
    background: white; 
}

.viewer-controls { position: absolute; top: 20px; right: 20px; display: flex; gap: 12px; z-index: 10; }
.viewer-controls .filled-icon {
    background: rgba(0, 0, 0, 0.6); color: white; border-radius: 50%; padding: 12px;
    backdrop-filter: blur(8px); border: 1px solid #FFFFFF; 
    transition: all 0.2s; box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}
.viewer-controls .filled-icon:hover { background: var(--md-sys-color-primary); border-color: var(--md-sys-color-primary); }

.info-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.info-item { display: flex; flex-direction: column; gap: 4px; }
.info-label { font-size: 0.75rem; text-transform: uppercase; color: #666; letter-spacing: 0.5px;}
.info-value { font-size: 0.95rem; color: var(--md-sys-color-on-background); word-break: break-word; }
.info-value a { color: var(--md-sys-color-primary); text-decoration: none; font-weight: 500;}

/* Animación del Clon Volador */
.flying-clone {
    position: fixed;
    z-index: 45; 
    object-fit: contain;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transform-origin: center center;
    will-change: top, left, width, height, transform, border-radius;
}
.flying-clone.fullscreen { border-radius: 0; box-shadow: none; }

@media (max-width: 600px) {
    .header-top-row { flex-direction: column; align-items: stretch; }
    .header-actions { justify-content: space-between; }
    .viewer-controls { top: 12px; right: 12px; gap: 8px; }
    .viewer-controls .filled-icon { padding: 8px; }
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInBg { from { opacity: 0; background: rgba(255, 255, 255, 0); } to { opacity: 1; background: rgba(255, 255, 255, 0.95); } }
@keyframes flashAnim {
    0% { opacity: 0.3; transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1.1); filter: brightness(1.2); }
}
/* ==========================================
   Solapas — "Buscar" / "Subir imagen"
   ========================================== */
.tabs { display: flex; gap: 4px; flex-shrink: 0; }
.tab {
    background: transparent; color: #5f6368; border-radius: 20px;
    padding: 8px 16px; font-size: 0.9rem; white-space: nowrap;
}
.tab .material-symbols-outlined { font-size: 20px; }
.tab:hover { background: var(--md-sys-color-surface-container); filter: none; }
.tab.active { background: #e8eefc; color: var(--md-sys-color-primary); font-weight: 600; }

.panel { animation: fadeIn 0.3s ease; }

/* Botón de envío */
.send-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.send-btn:disabled:hover { filter: none; }

/* ==========================================
   Crédito de Pexels (lo pide la plataforma)
   ========================================== */
.pexels-credit { display: flex; justify-content: center; padding: 32px 0 16px; }
.pexels-credit a {
    display: inline-flex; align-items: center; gap: 8px;
    color: #666; text-decoration: none; font-size: 0.85rem;
}
.pexels-credit a:hover { color: var(--md-sys-color-primary); }
.pexels-credit img { height: 18px; }

/* ==========================================
   Subir imagen — dropzone + preview
   ========================================== */
.dropzone {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 8px; max-width: 640px; margin: 48px auto 0; padding: 48px 24px;
    border: 2px dashed var(--md-sys-color-outline); border-radius: 16px;
    background: var(--md-sys-color-surface); cursor: pointer;
    transition: border-color 0.2s, background 0.2s, padding 0.2s;
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--md-sys-color-primary); background: #fafbff; outline: none; }
.dropzone.dragging { border-color: var(--md-sys-color-primary); background: #e8eefc; }
.dropzone.compacto { padding: 24px; margin-top: 24px; }
.dropzone.compacto .dropzone-icon { font-size: 32px; }
.dropzone.compacto .dropzone-title { font-size: 0.95rem; }

.dropzone-icon { font-size: 56px; color: #AECBFA; transition: font-size 0.2s; }
.dropzone-title { margin: 0; font-weight: 500; font-size: 1.05rem; }
.dropzone-hint { margin: 0 0 8px; color: #666; font-size: 0.85rem; }

.upload-preview {
    display: flex; flex-wrap: wrap; align-items: center; gap: 20px;
    max-width: 640px; margin: 24px auto 0; padding: 16px;
    background: var(--md-sys-color-surface); border: 1px solid var(--md-sys-color-outline);
    border-radius: 16px;
}
.upload-preview img {
    width: 140px; height: 140px; object-fit: contain;
    border-radius: 8px; background: var(--md-sys-color-surface-container); flex-shrink: 0;
}
.upload-meta { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; min-width: 0; flex: 1; }
.upload-name { font-weight: 500; word-break: break-all; }
.upload-dims { color: #666; font-size: 0.85rem; }

.upload-note {
    max-width: 640px; margin: 24px auto 0; padding: 0 24px;
    color: #666; font-size: 0.85rem; text-align: center;
}

/* ==========================================
   Toast
   ========================================== */
.toast {
    position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 16px);
    max-width: min(520px, calc(100vw - 48px));
    padding: 12px 20px; border-radius: 8px; z-index: 200;
    background: #2d2f31; color: #fff; font-size: 0.9rem; line-height: 1.4;
    box-shadow: 0 4px 16px rgba(0,0,0,0.25);
    opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;
}
.toast.visible { opacity: 1; transform: translate(-50%, 0); }
.toast.success { background: #0b6b3a; }
.toast.error { background: var(--md-sys-color-error); }

@media (max-width: 720px) {
    .tabs { width: 100%; }
    .tab { flex: 1; justify-content: center; }
    .dropzone { margin-top: 24px; padding: 32px 16px; }
}

/* ==========================================
   Barra de acción inferior
   ==========================================
   La acción que cierra el flujo vive al final del flujo, no en el header:
   después de elegir una foto mirás la foto, no la barra de arriba. Fija para
   que no haya que buscarla y para que el header quede sólo para buscar.

   NO lleva botón de cerrar: img-picker vive dentro del iframe de otro, y el
   chrome del modal (incluida la ✕) es de quien lo embebe. Dibujar una acá
   daría dos cruces encimadas. El cancelar por teclado sí es nuestro: un
   Escape adentro de un iframe cross-origin el padre no puede verlo. */
.action-bar {
    position: sticky; bottom: 0; z-index: 40;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 10px 24px; min-height: 56px; box-sizing: border-box;
    background: var(--md-sys-color-surface);
    border-top: 1px solid var(--md-sys-color-outline);
    box-shadow: 0 -1px 8px rgba(0,0,0,0.06);
}
.no-selection-hint { color: #80868b; font-size: 0.9rem; }
.action-bar .send-btn { flex-shrink: 0; }

/* El indicador pasó del header a la barra: acá puede respirar. */
.action-bar .selected-image-indicator { max-width: min(60%, 520px); }

/* ==========================================
   Filtros — botón, panel y chips activos
   ==========================================
   Los dos <select> ya no ocupan header permanentemente: se abren desde el
   botón y lo que quede activo se ve como chip removible. */
.filters-btn {
    position: absolute; right: 44px; top: 50%; transform: translateY(-50%);
    background: transparent; color: #5f6368; border-radius: 50%; padding: 6px;
}
.filters-btn:hover { background: rgba(0,0,0,0.06); filter: none; }
.filters-btn.con-filtros { color: var(--md-sys-color-primary); }
.search-bar-container input { padding-right: 84px; }

.filter-section {
    position: absolute; top: calc(100% + 8px); right: 0; z-index: 60;
    display: flex; flex-direction: column; gap: 12px;
    padding: 16px; min-width: 260px;
    background: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline); border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
.filter-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 0.9rem; }
.filter-row select {
    padding: 6px 10px; border-radius: 8px;
    border: 1px solid var(--md-sys-color-outline);
    background: var(--md-sys-color-surface); color: var(--md-sys-color-on-background);
}

.active-filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.filter-chip {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 8px 6px 12px; border-radius: 16px;
    background: #e8eefc; color: var(--md-sys-color-primary);
    font-size: 0.85rem; font-weight: 500; white-space: nowrap;
}
.filter-chip button {
    background: transparent; color: inherit; padding: 2px; border-radius: 50%;
    display: inline-flex; align-items: center;
}
.filter-chip button:hover { background: rgba(0,0,0,0.08); filter: none; }
.filter-chip .material-symbols-outlined { font-size: 16px; }

@media (max-width: 720px) {
    .action-bar { padding: 10px 16px; }
    .action-bar .selected-image-indicator { max-width: 50%; }
}