html {
    font-size: 14px;
    height: 100%;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder,
.form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* --------------------------------
   GLOBAL / APP SHELL
-------------------------------- */

html,
body {
    height: 100%;
    margin: 0;
    background: #f5f5f7;
    font-family: Arial, Helvetica, sans-serif;
    color: #222;
}

body {
    min-height: 100vh;
}

.app-shell {
    min-height: 100vh;
    background: #f5f5f7;
}

.app-topbar {
    height: 56px;
    background: #fff;
    border-bottom: 1px solid #e6e6e8;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    gap: 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.app-brand {
    min-width: 160px;
}

    .app-brand a {
        text-decoration: none;
        color: #222;
        font-weight: 800;
        letter-spacing: 0.04em;
        font-size: 1.1rem;
    }

.app-search {
    flex: 1;
    max-width: 640px;
}

    .app-search input {
        width: 100%;
        height: 38px;
        border: 0;
        outline: none;
        border-radius: 999px;
        background: #f0f0f2;
        padding: 0 18px;
        font-size: 0.95rem;
    }

.app-nav {
    display: flex;
    gap: 12px;
    align-items: center;
}

    .app-nav a {
        text-decoration: none;
        color: #444;
        padding: 10px 16px;
        border-radius: 999px;
        font-weight: 600;
        transition: background 0.15s ease;
    }

        .app-nav a:hover {
            background: #ececef;
        }

.nav-btn.active {
    background: #222;
    color: #fff;
}

.app-content {
    min-height: calc(100vh - 56px);
}

@media (max-width: 900px) {
    .app-topbar {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 16px;
    }

    .app-brand,
    .app-search,
    .app-nav {
        width: 100%;
        max-width: none;
    }

    .app-nav {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
}

/* --------------------------------
   SHARED CARD / PREVIEW STYLES
-------------------------------- */

.card-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-top: 4px;
}

.card-size-badge {
    font-size: 0.8rem;
    font-weight: 700;
    color: #475467;
    background: #f2f4f7;
    border: 1px solid #e4e7ec;
    padding: 4px 8px;
    border-radius: 999px;
    white-space: nowrap;
}

.asset-card {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform 0.15s ease;
}

    .asset-card:hover {
        transform: translateY(-2px);
    }

.asset-title,
.folder-card-title {
    font-weight: 700;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* --------------------------------
   FOLDER COLLAGES / PREVIEWS
-------------------------------- */

.folder-card-collage,
.home-folder-collage {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 16px;
    overflow: hidden;
    background: #ececef;
    display: grid;
    gap: 2px;
}

.folder-preview-image,
.home-folder-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    background: #ddd;
}

.folder-preview-empty,
.home-folder-empty {
    background: #e6e6ea;
}

.folder-card-collage.preview-count-0,
.home-folder-collage.preview-count-0 {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.folder-card-collage.preview-count-1,
.home-folder-collage.preview-count-1 {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.folder-card-collage.preview-count-2,
.home-folder-collage.preview-count-2 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr;
}

.folder-card-collage.preview-count-3,
.home-folder-collage.preview-count-3 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
}

    .folder-card-collage.preview-count-3 .folder-preview-image:nth-child(3),
    .home-folder-collage.preview-count-3 .home-folder-preview:nth-child(3) {
        grid-column: 1 / -1;
    }

.folder-card-collage.preview-count-4,
.home-folder-collage.preview-count-4 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
}

.folder-placeholder,
.home-folder-fallback,
.asset-fallback {
    grid-column: 1 / -1;
    grid-row: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 4rem;
    color: #f2b84b;
}

/* --------------------------------
   BROWSE PAGE
-------------------------------- */

.browse-shell {
    display: grid;
    grid-template-columns: 320px 1fr;
    min-height: calc(100vh - 56px);
}

.browse-sidebar {
    background: #f7f7f8;
    border-right: 1px solid #dfdfe2;
    padding: 28px 22px;
}

.browse-main {
    padding: 30px 28px;
    background: #f5f5f7;
}

.browse-filter-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    background: #fff;
    border: 1px solid #e4e7ec;
    border-radius: 16px;
    padding: 18px;
}

.filter-block {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-input {
    border: 1px solid #d9d9df;
    border-radius: 10px;
    padding: 10px 12px;
}

.browse-breadcrumb-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 22px;
}

.browse-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.crumb-pill {
    text-decoration: none;
    color: #344054;
    background: #fff;
    border: 1px solid #e4e7ec;
    padding: 6px 12px;
    border-radius: 999px;
    font-weight: 600;
    line-height: 1.2;
    transition: background 0.15s ease, border-color 0.15s ease;
}

    .crumb-pill:hover {
        background: #f9fafb;
        border-color: #d0d5dd;
    }

.crumb-separator {
    color: #98a2b3;
    font-weight: 600;
}

.browse-back-link {
    text-decoration: none;
    color: #344054;
    background: #fff;
    border: 1px solid #e4e7ec;
    padding: 6px 12px;
    border-radius: 999px;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
}

    .browse-back-link:hover {
        background: #f9fafb;
        border-color: #d0d5dd;
    }

.folder-card-grid,
.asset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 18px;
}

.folder-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: #fff;
    border: 1px solid #eaecf0;
    border-radius: 18px;
    box-shadow: 0 2px 12px rgba(16, 24, 40, 0.04);
    padding: 16px;
}

.folder-card-link {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    transition: transform 0.15s ease;
}

    .folder-card-link:hover {
        transform: translateY(-2px);
    }

.folder-card-body {
    display: flex;
    flex-direction: column;
    padding: 10px 2px 0;
}

.folder-card-title {
    font-weight: 700;
    color: #222;
    line-height: 1.3;
    margin-bottom: 4px;
}

.folder-card-meta {
    color: #6b7280;
    font-size: 0.92rem;
}

.folder-card-footer {
    display: flex;
    justify-content: flex-start;
}

.folder-download-pill {
    font-size: 0.8rem;
    padding: 5px 10px;
}

.asset-thumb {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 16px;
    overflow: hidden;
    background: #ececef;
    display: block;
}

    .asset-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
        background: #ddd;
    }

.asset-body {
    padding: 10px 2px 0;
}

.asset-meta {
    color: #6b7280;
    font-size: 0.92rem;
}

@media (max-width: 1000px) {
    .browse-shell {
        grid-template-columns: 1fr;
    }

    .browse-sidebar {
        border-right: 0;
        border-bottom: 1px solid #dfdfe2;
    }
}

/* --------------------------------
   HOME PAGE
-------------------------------- */

.home-folder-grid,
.home-asset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 18px;
}

/* --------------------------------
   DETAILS PAGE
-------------------------------- */

.details-page {
    padding: 24px;
}

.details-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    gap: 12px;
    flex-wrap: wrap;
}

.details-back,
.details-download {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    background: #fff;
    border: 1px solid #e4e7ec;
    color: #344054;
    padding: 10px 14px;
    border-radius: 10px;
    font-weight: 600;
}

.details-main {
    min-width: 0;
}

.details-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 20px;
    align-items: start;
}

.viewer-card,
.sidebar-card {
    background: #fff;
    border: 1px solid #eaecf0;
    border-radius: 18px;
    box-shadow: 0 2px 12px rgba(16, 24, 40, 0.04);
}

.viewer-card {
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    overflow: hidden;
}

.sidebar-card {
    padding: 20px;
    position: sticky;
    top: 20px;
}

#editorCanvas {
    display: block;
}

canvas {
    box-shadow: 0 4px 16px rgba(16, 24, 40, 0.08);
    border-radius: 6px;
}

.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 16px;
    padding: 16px;
    border-radius: 20px;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}

.toolbar-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.toolbar-group-settings {
    flex: 1 1 420px;
    gap: 12px;
}

.toolbar-group-actions {
    justify-content: flex-end;
}

.tool-btn {
    appearance: none;
    border: 1px solid #d9dee7;
    background: #ffffff;
    color: #1f2937;
    border-radius: 14px;
    padding: 10px 14px;
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 1px 1px rgba(16, 24, 40, 0.03);
}

    .tool-btn:hover {
        background: #f8fafc;
        border-color: #cfd6e2;
    }

    .tool-btn.active {
        background: #1f2937;
        color: #ffffff;
        border-color: #1f2937;
        box-shadow: none;
    }

    .tool-btn.tool-btn-primary {
        background: #1f2937;
        color: #ffffff;
        border-color: #1f2937;
    }

        .tool-btn.tool-btn-primary:hover,
        .tool-btn.active:hover {
            background: #111827;
            border-color: #111827;
        }

.tool-label {
    color: #475467;
    font-size: 0.92rem;
    font-weight: 600;
    margin-right: 2px;
}

.toolbar-group-settings input[type="color"] {
    width: 42px;
    height: 42px;
    border: 1px solid #d9dee7;
    border-radius: 12px;
    background: #ffffff;
    padding: 3px;
    cursor: pointer;
}

.toolbar-group-settings input[type="number"],
.toolbar-group-settings select {
    height: 42px;
    border-radius: 14px;
    border: 1px solid #d9dee7;
    background: #ffffff;
    color: #1f2937;
    padding: 0 12px;
    font-size: 0.95rem;
    min-width: 84px;
}

    .toolbar-group-settings input[type="number"]:focus,
    .toolbar-group-settings select:focus {
        outline: none;
        border-color: #1f2937;
        box-shadow: 0 0 0 3px rgba(31, 41, 55, 0.08);
    }

.toolbar-group-settings input[type="range"] {
    accent-color: #2563eb;
}

.toolbar-group-settings input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #2563eb;
}

.editor-helper-text {
    margin-bottom: 16px;
    color: #667085;
    font-size: 0.96rem;
    line-height: 1.5;
}

.image-editor-wrap {
    width: 100%;
    max-width: 100%;
    min-height: 0;
    background: #e9edf2;
    border: 1px solid #d7dde5;
    border-radius: 24px;
    padding: 16px;
    overflow: auto;
    position: relative;
    box-shadow: inset 0 0 0 1px rgba(16, 24, 40, 0.03);
    box-sizing: border-box;
}

    .image-editor-wrap.drag-over {
        border-color: #2563eb;
        box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
    }

.canvas-stage {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 320px;
    background: linear-gradient(45deg, #f3f4f6 25%, transparent 25%), linear-gradient(-45deg, #f3f4f6 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #f3f4f6 75%), linear-gradient(-45deg, transparent 75%, #f3f4f6 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    border-radius: 18px;
    padding: 20px;
}

.canvas-container {
    max-width: 100% !important;
    margin: 0 auto;
    border-radius: 18px;
    overflow: hidden;
    background: #ffffff;
    border: 2px solid #cfd6e2;
    box-shadow: 0 8px 24px rgba(16, 24, 40, 0.10);
}

    .canvas-container canvas,
    .image-editor-wrap canvas,
    #editorCanvas {
        display: block;
        margin: 0 auto;
        border-radius: 12px;
    }

#zoomOutBtn,
#zoomInBtn,
#resetZoomBtn {
    min-width: 52px;
}

#deleteBtn:hover,
#clearBtn:hover {
    border-color: #f04438;
    color: #b42318;
    background: #fef3f2;
}

.pdf-frame,
.text-frame,
.generic-frame {
    width: 100%;
    height: 80vh;
    border: 0;
    border-radius: 12px;
    background: #fff;
}

.file-title {
    margin: 0 0 6px 0;
    font-size: 1.8rem;
    line-height: 1.1;
}

.file-subtitle {
    margin: 0 0 20px 0;
    color: #667085;
    word-break: break-word;
}

.meta-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.meta-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    border-bottom: 1px solid #f2f4f7;
    padding-bottom: 12px;
}

    .meta-row span {
        color: #667085;
    }

.fallback-card {
    text-align: center;
    padding: 40px 20px;
}

@media (max-width: 900px) {
    .details-layout {
        grid-template-columns: 1fr;
    }

    .sidebar-card {
        position: static;
    }

    .details-page {
        padding: 16px;
    }

    .viewer-card {
        padding: 12px;
    }

    .editor-toolbar {
        display: grid;
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 12px;
    }

    .toolbar-group,
    .toolbar-group-settings,
    .toolbar-group-actions {
        width: 100%;
        justify-content: flex-start;
    }

    .toolbar-group {
        gap: 8px;
    }

    .toolbar-group-settings {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px 12px;
        align-items: center;
    }

        .toolbar-group-settings .tool-label {
            margin-right: 0;
        }

        .toolbar-group-settings input[type="range"] {
            width: 100%;
        }

        .toolbar-group-settings input[type="number"],
        .toolbar-group-settings select {
            width: 100%;
            min-width: 0;
        }

    .toolbar-group-actions {
        justify-content: flex-start;
    }

    .image-editor-wrap {
        padding: 10px;
        border-radius: 18px;
        overflow: auto;
        -webkit-overflow-scrolling: touch;
    }

    .canvas-stage {
        min-height: 220px;
        padding: 12px;
    }
}

@media (max-width: 640px) {
    .details-page {
        padding: 12px;
    }

    .details-toolbar {
        gap: 8px;
    }

    .details-back,
    .details-download {
        min-height: 42px;
    }

    .toolbar-group-settings {
        grid-template-columns: 1fr;
    }

    .tool-btn {
        min-height: 44px;
        padding: 10px 12px;
        font-size: 0.9rem;
        border-radius: 12px;
    }

    .toolbar-group-settings input[type="number"],
    .toolbar-group-settings select {
        min-width: 0;
        width: 100%;
        height: 40px;
        font-size: 0.9rem;
    }

    .toolbar-group-settings input[type="color"] {
        width: 40px;
        height: 40px;
    }

    .tool-label {
        font-size: 0.85rem;
    }

    .editor-helper-text {
        font-size: 0.9rem;
    }

    .canvas-stage {
        min-height: 180px;
        padding: 10px;
    }
}