:root {
    --bg-color: #15161a;
    --bg-color-light: #23252c;
    --header-bg: linear-gradient(180deg, #2a2c33 0%, #23242b 100%);
    --border-color: #3d404a;
    --text-color: #e3e6ed;
    --text-color-muted: #9ca3b4;
    --primary-color: #2f8fff;
    --primary-color-hover: #1f6fcd;
    --surface-soft: rgba(255, 255, 255, 0.03);
    --surface-hover: rgba(255, 255, 255, 0.06);
    --btn-action-bg: #3c404c;
    --btn-action-bg-hover: #4b5160;
    --btn-action-color: #d9dde7;
    --btn-action-border: #4b5160;
    --loading-dot: #5e6576;
    --status-up-color: #39c172;
    --status-down-color: #e25555;
    --copy-success-bg: #2c7a4b;
    --danger-btn-bg: #8b2b2b;
    --danger-btn-hover: #a53838;
    --modal-overlay-bg: rgba(0, 0, 0, 0.6);
    --field-bg: #23252c;
    --field-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
    --card-shadow: 0 6px 16px rgba(0, 0, 0, 0.24);
    --card-shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.16);
    --page-glow: radial-gradient(circle at top right, rgba(47, 143, 255, 0.08), transparent 55%);
    --font-family: "Encode Sans Condensed", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --container-width: 1200px;
    --header-height: 60px;
}

:root[data-theme="skeuomorphic"] {
    --bg-color: #c5c5c5;
    --bg-color-light: #dedede;
    --header-bg: linear-gradient(180deg, #6b6b6b 0%, #494949 48%, #383838 100%);
    --border-color: #9f9f9f;
    --text-color: #202020;
    --text-color-muted: #4f4f4f;
    --primary-color: #2f6ccc;
    --primary-color-hover: #1e4f9d;
    --surface-soft: linear-gradient(180deg, #e8e8e8 0%, #d2d2d2 100%);
    --surface-hover: linear-gradient(180deg, #f1f1f1 0%, #dddddd 100%);
    --btn-action-bg: linear-gradient(180deg, #efefef 0%, #cbcbcb 100%);
    --btn-action-bg-hover: linear-gradient(180deg, #ffffff 0%, #d9d9d9 100%);
    --btn-action-color: #222;
    --btn-action-border: #9d9d9d;
    --loading-dot: #878787;
    --status-up-color: #2b9a2b;
    --status-down-color: #bf3d3d;
    --copy-success-bg: linear-gradient(180deg, #66b86f 0%, #3f8f4d 100%);
    --danger-btn-bg: linear-gradient(180deg, #d96d6d 0%, #ac3f3f 100%);
    --danger-btn-hover: linear-gradient(180deg, #e57e7e 0%, #ba4747 100%);
    --modal-overlay-bg: rgba(10, 10, 10, 0.5);
    --field-bg: linear-gradient(180deg, #f3f3f3 0%, #d9d9d9 100%);
    --field-shadow: inset 1px 1px 0 rgba(255, 255, 255, 0.9), inset -1px -1px 0 rgba(0, 0, 0, 0.12);
    --card-shadow: 0 7px 14px rgba(0, 0, 0, 0.25), inset 1px 1px 0 rgba(255, 255, 255, 0.75);
    --card-shadow-soft: 0 3px 8px rgba(0, 0, 0, 0.18), inset 1px 1px 0 rgba(255, 255, 255, 0.65);
    --page-glow:
        repeating-linear-gradient(
            0deg,
            rgba(0, 0, 0, 0.02),
            rgba(0, 0, 0, 0.02) 2px,
            rgba(255, 255, 255, 0.01) 2px,
            rgba(255, 255, 255, 0.01) 4px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.05) 2px,
            rgba(255, 255, 255, 0.05) 4px
        ),
        linear-gradient(180deg, #d6d6d6 0%, #c2c2c2 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background: var(--page-glow), var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 1.05rem;
}

input,
textarea,
button,
select {
    font-family: var(--font-family);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Header & Navigation --- */
.main-header {
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
    display: flex;
    align-items: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.22);
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: 14px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.main-header nav a {
    color: var(--text-color-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease-in-out;
}

.main-header nav {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.global-search {
    width: min(560px, 100%);
    position: relative;
}

.global-search input {
    width: 100%;
    min-height: 34px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 6px 12px;
    background: var(--field-bg);
    color: var(--text-color);
    box-shadow: var(--field-shadow);
}

.global-search-results {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--field-bg);
    box-shadow: var(--card-shadow);
    z-index: 1200;
    max-height: 360px;
    overflow: auto;
    padding: 6px;
}

.global-search-results.hidden {
    display: none;
}

.global-search-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px;
    border-radius: 6px;
}

.global-search-item:hover {
    background: var(--surface-hover);
}

.global-search-item.active {
    background: var(--surface-hover);
    outline: 1px solid var(--primary-color);
}

.global-search-select {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-color);
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 1px;
    cursor: pointer;
    padding: 2px 4px;
}

.global-search-title {
    font-size: 0.92rem;
    font-weight: 600;
}

.global-search-meta {
    font-size: 0.76rem;
    color: var(--text-color-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.global-search-action {
    width: 66px;
    height: 28px;
}

.global-search-empty {
    padding: 8px 10px;
    font-size: 0.9rem;
    color: var(--text-color-muted);
}

.main-header nav a:hover {
    color: var(--primary-color);
}

.theme-toggle {
    width: 78px;
    height: 30px;
    border-radius: 16px;
    border: 1px solid var(--btn-action-border);
    background: var(--btn-action-bg);
    color: var(--btn-action-color);
    font-size: 0.8rem;
    letter-spacing: 0.02em;
    cursor: pointer;
    box-shadow: var(--card-shadow-soft);
}

.theme-toggle:hover {
    background: var(--btn-action-bg-hover);
    color: var(--text-color);
}

/* --- Main Content --- */
.main-content {
    padding-top: 40px;
    padding-bottom: 40px;
}

.flash-stack {
    display: grid;
    gap: 8px;
    margin-bottom: 14px;
}

.flash-message {
    border: 1px solid var(--border-color);
    background: var(--surface-soft);
    color: var(--text-color);
    border-radius: 8px;
    padding: 9px 12px;
    box-shadow: var(--card-shadow-soft);
}

.flash-message.error {
    border-color: #8f4444;
    color: #f0b4b4;
}

/* --- Tabs --- */
.tabs {
    width: 100%;
}

.tab-links {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.tab-link {
    font-family: var(--font-family);
    font-size: 1rem;
    padding: 10px 20px;
    cursor: pointer;
    border: none;
    background-color: transparent;
    color: var(--text-color-muted);
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease-in-out;
    margin-bottom: -1px; /* Overlap the container border */
}

.tab-link:hover {
    color: var(--text-color);
}

.tab-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 500;
}

.tab-content {
    padding: 0 10px;
}

.tab-content.hidden {
    display: none;
}

.tab-content h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* --- Bookmark Form --- */
.add-bookmark-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.add-bookmark-form input[type="text"],
.add-bookmark-form input[type="url"] {
    flex: 1 1 200px;
    padding: 10px;
    border: 1px solid var(--border-color);
    background: var(--field-bg);
    color: var(--text-color);
    border-radius: 4px;
    font-size: 0.9rem;
    box-shadow: var(--field-shadow);
}

.add-bookmark-form button {
    padding: 10px 20px;
    border: none;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

.add-bookmark-form button:hover {
    background-color: var(--primary-color-hover);
}

.form-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 30px 0;
}

/* --- Bookmark Grid --- */
.bookmark-category {
    margin-bottom: 18px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--surface-soft);
    overflow: hidden;
    box-shadow: var(--card-shadow-soft);
}

.bookmark-category.dragging {
    opacity: 0.55;
}

.bookmark-category-header {
    border-bottom: 1px solid var(--border-color);
}

.category-toggle {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-color-muted);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 10px;
    font-size: 0.95rem;
    cursor: pointer;
    text-align: left;
}

.category-toggle:hover {
    color: var(--text-color);
    background: var(--surface-hover);
}

.drag-handle {
    color: var(--text-color-muted);
    font-weight: 700;
    cursor: grab;
    letter-spacing: 1px;
}

.category-title {
    flex: 1;
    font-weight: 600;
}

.category-count {
    font-size: 0.75rem;
    color: var(--text-color-muted);
    padding: 1px 7px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.bookmark-grid.hidden {
    display: none;
}

.bookmark-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 10px;
    padding: 10px;
}

.bookmark-tile {
    background: var(--field-bg);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: grab;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--card-shadow-soft);
}

.bookmark-tile:hover {
    transform: translateY(-3px);
    box-shadow: var(--card-shadow);
}

.bookmark-tile.dragging {
    opacity: 0.55;
    cursor: grabbing;
}

.bookmark-link {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 9px;
    text-decoration: none;
    color: var(--text-color);
    flex-grow: 1;
}

.favicon {
    width: 16px;
    height: 16px;
    object-fit: contain;
    flex-shrink: 0;
    background-color: transparent;
}

.favicon.loading {
    animation: pulse 1.5s infinite ease-in-out;
    background-color: var(--loading-dot);
    border-radius: 3px;
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.status-dot {
    flex-shrink: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--loading-dot); /* Default/loading state */
    transition: background-color 0.3s ease;
}

.status-dot.up {
    background-color: var(--status-up-color); /* Green */
}

.status-dot.down {
    background-color: var(--status-down-color); /* Red */
}

.bookmark-title {
    font-weight: 500;
    line-height: 1.3;
    word-break: break-word;
}

.bookmark-actions {
    border-top: 1px solid var(--border-color);
    padding: 5px 7px;
    background-color: rgba(0, 0, 0, 0.12);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
}

.click-count {
    font-size: 0.75rem;
    color: var(--text-color-muted);
}

.bookmark-buttons {
    display: flex;
    align-items: center;
    gap: 5px;
}

.action-form {
    margin: 0;
    display: inline-flex;
}

.bookmark-actions .btn-action,
.bookmark-actions button.btn-action,
.snippet-actions .btn-action,
.snippet-actions button.btn-action,
.note-actions .btn-action,
.note-actions button.btn-action,
.snippet-category-tools .btn-action,
.snippet-category-tools button.btn-action {
    font-size: 0.8rem;
    width: 68px;
    height: 27px;
    padding: 0;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid var(--btn-action-border);
    background: var(--btn-action-bg);
    color: var(--btn-action-color);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    font-family: var(--font-family);
    appearance: none;
}

.snippet-actions .btn-action:hover,
.bookmark-actions .btn-action:hover {
    background: var(--btn-action-bg-hover);
    color: var(--text-color);
}

/* --- Snippets --- */
.add-snippet-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.inline-snippet-form {
    margin: 10px;
    margin-top: 8px;
}

.inline-snippet-form.hidden {
    display: none;
}

.add-snippet-form input[type="text"] {
    flex: 1 1 220px;
    padding: 10px;
    border: 1px solid var(--border-color);
    background: var(--field-bg);
    color: var(--text-color);
    border-radius: 4px;
    font-size: 0.9rem;
    box-shadow: var(--field-shadow);
}

.add-snippet-form textarea {
    flex: 1 1 100%;
    min-height: 140px;
    padding: 10px;
    border: 1px solid var(--border-color);
    background: var(--field-bg);
    color: var(--text-color);
    border-radius: 4px;
    font-size: 0.9rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    line-height: 1.5;
    resize: vertical;
    box-shadow: var(--field-shadow);
}

.add-snippet-form button {
    padding: 10px 20px;
    border: none;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

.add-snippet-form button:hover {
    background-color: var(--primary-color-hover);
}

.snippet-category {
    margin-bottom: 18px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--surface-soft);
    overflow: hidden;
    box-shadow: var(--card-shadow-soft);
}

.snippet-category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
    padding: 8px 10px;
}

.snippet-rename-form {
    flex: 1;
}

.snippet-category-input {
    width: 100%;
    max-width: 260px;
    font-size: 1.02rem;
    font-weight: 600;
    color: var(--text-color-muted);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 5px;
    padding: 3px 6px;
}

.snippet-category-input:focus {
    outline: none;
    border-color: var(--border-color);
    color: var(--text-color);
    background: var(--surface-hover);
}

.snippet-category-tools {
    display: flex;
    align-items: center;
    gap: 6px;
}

.snippet-category-tools .btn-action {
    width: 32px;
    height: 26px;
}

.snippet-category-tools .delete-category-btn {
    width: 68px;
}

.snippet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
    padding: 10px;
}

.snippet-card {
    background: var(--field-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    cursor: grab;
    box-shadow: var(--card-shadow-soft);
}

.snippet-card.dragging {
    opacity: 0.55;
    cursor: grabbing;
}

.snippet-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    margin-bottom: 8px;
}

.snippet-title {
    font-size: 0.95rem;
    margin-bottom: 8px;
    color: var(--text-color);
}

.snippet-body {
    margin: 0;
    padding: 9px;
    max-height: 220px;
    overflow: auto;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: rgba(0, 0, 0, 0.18);
    color: var(--text-color);
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.45;
    font-size: 0.82rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.copy-snippet-btn.copied {
    background: var(--copy-success-bg);
    color: #ffffff;
}

/* --- Notes --- */
.add-note-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 14px;
}

.note-inline-form.hidden {
    display: none;
}

.add-note-form input[type="text"] {
    flex: 1 1 260px;
    padding: 10px;
    border: 1px solid var(--border-color);
    background: var(--field-bg);
    color: var(--text-color);
    border-radius: 4px;
    font-size: 0.9rem;
    box-shadow: var(--field-shadow);
}

.add-note-form textarea {
    flex: 1 1 100%;
    min-height: 100px;
    padding: 10px;
    border: 1px solid var(--border-color);
    background: var(--field-bg);
    color: var(--text-color);
    border-radius: 4px;
    font-size: 0.9rem;
    line-height: 1.45;
    resize: vertical;
    box-shadow: var(--field-shadow);
}

.checkbox-inline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-color-muted);
    font-size: 0.9rem;
}

.color-inline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-color-muted);
    font-size: 0.9rem;
}

.color-inline input[type="color"] {
    width: 34px;
    height: 26px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: transparent;
    padding: 0;
    cursor: pointer;
}

.add-note-form button {
    padding: 10px 20px;
    border: none;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

.add-note-form button:hover {
    background-color: var(--primary-color-hover);
}

.notes-filter-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 0;
}

.notes-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.note-add-toggle {
    width: 32px;
    height: 27px;
}

.notes-filter {
    color: var(--text-color-muted);
    text-decoration: none;
    font-size: 0.85rem;
    padding: 5px 9px;
    border: 1px solid var(--border-color);
    border-radius: 14px;
}

.notes-filter:hover {
    color: var(--text-color);
}

.notes-filter.active {
    color: var(--text-color);
    border-color: var(--primary-color);
}

.data-tools-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--surface-soft);
    padding: 10px;
    margin-bottom: 10px;
    box-shadow: var(--card-shadow-soft);
}

.data-tools-title {
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.data-tools-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.data-tools-row:last-child {
    margin-bottom: 0;
}

.data-tool-btn {
    width: 130px;
}

.data-tools-row select,
.data-tools-row input[type="file"] {
    min-height: 30px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--field-bg);
    color: var(--text-color);
    padding: 4px 8px;
    box-shadow: var(--field-shadow);
}

.note-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.note-card {
    --note-color: #f6e58d;
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    background-color: var(--note-color);
    padding: 10px;
    color: #1f1f1f;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.12);
}

.note-card.done {
    opacity: 0.75;
}

.search-hit {
    outline: 2px solid var(--primary-color);
    outline-offset: 1px;
}

.note-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
}

.note-type {
    font-size: 0.72rem;
    color: rgba(0, 0, 0, 0.65);
    border: 1px solid rgba(0, 0, 0, 0.22);
    border-radius: 10px;
    padding: 1px 6px;
}

.note-actions {
    display: flex;
    align-items: center;
    gap: 5px;
}

.note-title {
    font-size: 0.98rem;
    margin-bottom: 6px;
}

.note-card.done .note-title {
    text-decoration: line-through;
}

.note-body {
    margin: 0;
    color: rgba(0, 0, 0, 0.8);
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.45;
    font-size: 0.88rem;
}

.note-body-empty {
    color: rgba(0, 0, 0, 0.55);
    font-style: italic;
}

.todo-toggle {
    display: inline-flex;
    align-items: center;
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--modal-overlay-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 16px;
}

.modal-overlay.hidden {
    display: none;
}

.modal-card {
    width: 100%;
    max-width: 420px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--field-bg);
    padding: 16px;
    box-shadow: var(--card-shadow);
}

.modal-title {
    margin-bottom: 6px;
    font-size: 1.05rem;
}

.modal-message {
    color: var(--text-color-muted);
    margin-bottom: 12px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.modal-actions-split {
    justify-content: space-between;
}

.modal-actions .btn-action {
    width: 110px;
    height: 30px;
    font-size: 0.82rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.modal-danger {
    background: var(--danger-btn-bg);
    color: #fff;
}

.modal-danger:hover {
    background: var(--danger-btn-hover);
}

/* --- Theme Details --- */
:root[data-theme="skeuomorphic"] .main-header {
    border: 2px solid;
    border-color: #808080 #2b2b2b #222 #676767;
    border-left: 0;
    border-right: 0;
    box-shadow: 0 9px 20px rgba(0, 0, 0, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.28), inset 0 -1px 0 rgba(0, 0, 0, 0.35);
}

:root[data-theme="skeuomorphic"] .logo {
    color: #f2f2f2;
    text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.9), 0 1px 0 rgba(255, 255, 255, 0.15);
}

:root[data-theme="skeuomorphic"] .main-header nav a {
    color: #d3d3d3;
}

:root[data-theme="skeuomorphic"] .global-search input,
:root[data-theme="skeuomorphic"] .global-search-results {
    border-color: #b2b2b2 #f2f2f2 #ffffff #9a9a9a;
    box-shadow: inset 2px 2px 4px rgba(0, 0, 0, 0.12), inset -1px -1px 0 rgba(255, 255, 255, 0.85);
}

:root[data-theme="skeuomorphic"] .global-search-item:hover {
    background: linear-gradient(180deg, #f2f2f2 0%, #dfdfdf 100%);
}

:root[data-theme="skeuomorphic"] .global-search-item.active {
    background: linear-gradient(180deg, #f6f6f6 0%, #e3e3e3 100%);
    outline-color: #4b75b3;
}

:root[data-theme="skeuomorphic"] .tab-link {
    border: 1px solid #a8a8a8;
    border-bottom: 0;
    border-radius: 7px 7px 0 0;
    background: linear-gradient(180deg, #e0e0e0 0%, #c9c9c9 100%);
    color: #474747;
    margin-right: 6px;
    box-shadow: inset 1px 1px 0 rgba(255, 255, 255, 0.85), inset -1px 0 0 rgba(0, 0, 0, 0.08);
}

:root[data-theme="skeuomorphic"] .tab-link.active {
    background: linear-gradient(180deg, #f3f3f3 0%, #dddddd 100%);
    border-color: #b9b9b9 #949494 #dddddd #b9b9b9;
    color: #1f1f1f;
    box-shadow: inset 1px 1px 0 rgba(255, 255, 255, 0.92), 0 -1px 0 #dddddd;
}

:root[data-theme="skeuomorphic"] .tab-links {
    border-bottom: 2px solid #8f8f8f;
}

:root[data-theme="skeuomorphic"] .form-divider {
    border-top: 1px solid #9f9f9f;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
}

:root[data-theme="skeuomorphic"] .bookmark-category,
:root[data-theme="skeuomorphic"] .snippet-category,
:root[data-theme="skeuomorphic"] .modal-card,
:root[data-theme="skeuomorphic"] .login-card {
    border-color: #b9b9b9 #8e8e8e #888 #adadad;
    box-shadow: 0 8px 14px rgba(0, 0, 0, 0.22), inset 1px 1px 0 rgba(255, 255, 255, 0.75);
}

:root[data-theme="skeuomorphic"] .bookmark-tile,
:root[data-theme="skeuomorphic"] .snippet-card {
    border-color: #bebebe #959595 #8f8f8f #b0b0b0;
}

:root[data-theme="skeuomorphic"] .bookmark-actions,
:root[data-theme="skeuomorphic"] .snippet-actions,
:root[data-theme="skeuomorphic"] .note-actions {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.24) 0%, rgba(0, 0, 0, 0.03) 100%);
}

:root[data-theme="skeuomorphic"] .flash-message,
:root[data-theme="skeuomorphic"] .data-tools-card {
    border-color: #b9b9b9 #8e8e8e #888 #adadad;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.18), inset 1px 1px 0 rgba(255, 255, 255, 0.75);
}

:root[data-theme="skeuomorphic"] .flash-message.error {
    border-color: #ad7171 #8f4d4d #834343 #a36565;
    color: #7f1f1f;
    background: linear-gradient(180deg, #f2d8d8 0%, #e6c0c0 100%);
}

:root[data-theme="skeuomorphic"] .bookmark-category-header,
:root[data-theme="skeuomorphic"] .snippet-category-header {
    background: linear-gradient(180deg, #efefef 0%, #d4d4d4 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

:root[data-theme="skeuomorphic"] .category-toggle:hover {
    background: linear-gradient(180deg, #f8f8f8 0%, #e3e3e3 100%);
}

:root[data-theme="skeuomorphic"] .add-bookmark-form input[type="text"],
:root[data-theme="skeuomorphic"] .add-bookmark-form input[type="url"],
:root[data-theme="skeuomorphic"] .add-snippet-form input[type="text"],
:root[data-theme="skeuomorphic"] .add-snippet-form textarea,
:root[data-theme="skeuomorphic"] .add-note-form input[type="text"],
:root[data-theme="skeuomorphic"] .add-note-form textarea,
:root[data-theme="skeuomorphic"] .login-card input[type="password"] {
    border-color: #b2b2b2 #f2f2f2 #ffffff #9a9a9a;
    box-shadow: inset 2px 2px 4px rgba(0, 0, 0, 0.12), inset -1px -1px 0 rgba(255, 255, 255, 0.85);
}

:root[data-theme="skeuomorphic"] .snippet-category-input {
    background: transparent;
    border: 1px solid transparent;
    box-shadow: none;
    color: #3d3d3d;
}

:root[data-theme="skeuomorphic"] .snippet-category-input:focus {
    background: linear-gradient(180deg, #f2f2f2 0%, #dfdfdf 100%);
    border-color: #afafaf #8f8f8f #8a8a8a #a6a6a6;
    box-shadow: inset 1px 1px 0 rgba(255, 255, 255, 0.82);
    color: #1f1f1f;
}

:root[data-theme="skeuomorphic"] .add-bookmark-form button,
:root[data-theme="skeuomorphic"] .add-snippet-form button,
:root[data-theme="skeuomorphic"] .add-note-form button,
:root[data-theme="skeuomorphic"] .login-card input[type="submit"] {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.34) 0%, rgba(255, 255, 255, 0.08) 48%, rgba(0, 0, 0, 0.08) 100%),
        linear-gradient(180deg, #4a89e8 0%, #2760b8 100%);
    border: 1px solid #4d74a9;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.22), inset 1px 1px 0 rgba(255, 255, 255, 0.65);
    text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.35);
}

:root[data-theme="skeuomorphic"] .add-bookmark-form button:hover,
:root[data-theme="skeuomorphic"] .add-snippet-form button:hover,
:root[data-theme="skeuomorphic"] .add-note-form button:hover,
:root[data-theme="skeuomorphic"] .login-card input[type="submit"]:hover {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.46) 0%, rgba(255, 255, 255, 0.14) 48%, rgba(0, 0, 0, 0.07) 100%),
        linear-gradient(180deg, #5b96ef 0%, #2f6bc6 100%);
}

:root[data-theme="skeuomorphic"] .bookmark-actions .btn-action,
:root[data-theme="skeuomorphic"] .bookmark-actions button.btn-action,
:root[data-theme="skeuomorphic"] .snippet-actions .btn-action,
:root[data-theme="skeuomorphic"] .snippet-actions button.btn-action,
:root[data-theme="skeuomorphic"] .note-actions .btn-action,
:root[data-theme="skeuomorphic"] .note-actions button.btn-action,
:root[data-theme="skeuomorphic"] .snippet-category-tools .btn-action,
:root[data-theme="skeuomorphic"] .snippet-category-tools button.btn-action,
:root[data-theme="skeuomorphic"] .theme-toggle {
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2), inset 1px 1px 0 rgba(255, 255, 255, 0.85);
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.7);
}

:root[data-theme="skeuomorphic"] .bookmark-actions .btn-action:active,
:root[data-theme="skeuomorphic"] .bookmark-actions button.btn-action:active,
:root[data-theme="skeuomorphic"] .snippet-actions .btn-action:active,
:root[data-theme="skeuomorphic"] .snippet-actions button.btn-action:active,
:root[data-theme="skeuomorphic"] .note-actions .btn-action:active,
:root[data-theme="skeuomorphic"] .note-actions button.btn-action:active,
:root[data-theme="skeuomorphic"] .snippet-category-tools .btn-action:active,
:root[data-theme="skeuomorphic"] .snippet-category-tools button.btn-action:active,
:root[data-theme="skeuomorphic"] .theme-toggle:active {
    transform: translateY(1px);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.18);
}

:root[data-theme="skeuomorphic"] .note-card {
    box-shadow: 0 7px 12px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.24);
    border-color: rgba(0, 0, 0, 0.26);
}

:root[data-theme="skeuomorphic"] .notes-topbar {
    padding: 2px 0 4px;
}

:root[data-theme="skeuomorphic"] .notes-filter {
    border-color: #afafaf #8f8f8f #8a8a8a #a6a6a6;
    border-radius: 14px;
    background: linear-gradient(180deg, #ececec 0%, #d1d1d1 100%);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.16), inset 1px 1px 0 rgba(255, 255, 255, 0.82);
    color: #3b3b3b;
}

:root[data-theme="skeuomorphic"] .notes-filter:hover {
    background: linear-gradient(180deg, #f4f4f4 0%, #dddddd 100%);
    color: #1e1e1e;
}

:root[data-theme="skeuomorphic"] .notes-filter.active {
    color: #173a6d;
    border-color: #5f85bd #3f629a #36558a #5b81b7;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.45) 0%, rgba(255, 255, 255, 0.1) 52%, rgba(0, 0, 0, 0.08) 100%),
        linear-gradient(180deg, #88afe8 0%, #5e88c7 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88), 0 2px 4px rgba(0, 0, 0, 0.2);
}

:root[data-theme="skeuomorphic"] .modal-overlay {
    backdrop-filter: blur(2px);
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    :root {
        --header-height: 50px;
    }

    .logo {
        font-size: 1.2rem;
    }

    .main-content {
        padding-top: 20px;
    }

    .tab-links {
        margin-bottom: 20px;
    }

    .main-header .container {
        flex-wrap: wrap;
        gap: 8px;
        padding-top: 8px;
        padding-bottom: 8px;
    }

    .main-header {
        height: auto;
        min-height: var(--header-height);
    }

    .header-center {
        order: 3;
        width: 100%;
    }

    .global-search {
        width: 100%;
    }

    .tab-link {
        padding: 8px 12px;
        font-size: 0.9rem;
    }

    .tab-content h2 {
        font-size: 1.5rem;
    }

    .snippet-grid {
        grid-template-columns: 1fr;
    }

    .note-grid {
        grid-template-columns: 1fr;
    }

    .data-tool-btn {
        width: 100%;
    }

    .data-tools-row select,
    .data-tools-row input[type="file"] {
        width: 100%;
    }

    .modal-actions {
        flex-wrap: wrap;
        justify-content: flex-end;
    }

    .modal-actions .btn-action {
        width: 100%;
    }
}