/* =========================================================================
   NoteMaster Design System & Stylesheet (IT Pori Inspired)
   Supports Bootstrap 5 themes (data-bs-theme="dark|light").
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Brand variables (IT Pori Style) */
    --orange:        #FF6B00;
    --orange-dim:    #CC5200;
    --orange-glow:   rgba(255, 107, 0, 0.15);
    --orange-faint:  rgba(255, 107, 0, 0.06);

    /* Fonts */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body:    'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono:    'JetBrains Mono', SFMono-Regular, Consolas, monospace;

    /* Spacing & Sizes */
    --pkh-radius: 12px;
    --pkh-sidebar-w: 280px;
    --pkh-meta-w: 280px;
}

[data-bs-theme="dark"] {
    --pkh-bg:          #080808;         /* Rich black background */
    --pkh-panel:       #0f0f0f;         /* Deep slate surfaces */
    --pkh-panel-2:     #161616;         /* secondary surface */
    --pkh-panel-3:     #1d1d1d;         /* tertiary surface */
    --pkh-border:      rgba(255, 107, 0, 0.13); /* Subtle orange tint borders */
    --pkh-border-subtle: rgba(255, 255, 255, 0.07);
    --pkh-text:        #EDEAE4;         /* Cream body text */
    --pkh-text-muted:  #888888;
    --pkh-text-muted2: #555555;
    --pkh-accent:      var(--orange);
    --pkh-accent-2:    var(--orange-dim);
    --pkh-glow:        var(--orange-glow);
    --pkh-navbar-bg:   rgba(8, 8, 8, 0.85);
}

[data-bs-theme="light"] {
    --pkh-bg:          #FAF9F6;         /* Warm clean cream-white background */
    --pkh-panel:       #FFFFFF;         /* White containers */
    --pkh-panel-2:     #F4F2EE;         /* Warm light gray panels */
    --pkh-panel-3:     #EAE7E2;
    --pkh-border:      rgba(255, 107, 0, 0.15);
    --pkh-border-subtle: #E2DDD5;
    --pkh-text:        #1A1A18;         /* Deep slate-brown body text */
    --pkh-text-muted:  #6A6864;
    --pkh-text-muted2: #8C8A85;
    --pkh-accent:      var(--orange);
    --pkh-accent-2:    var(--orange-dim);
    --pkh-glow:        rgba(255, 107, 0, 0.10);
    --pkh-navbar-bg:   rgba(250, 249, 246, 0.85);
}

/* ---- Core overrides ---- */
body {
    background: var(--pkh-bg);
    color: var(--pkh-text);
    font-family: var(--font-body);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.02em;
}

a {
    color: var(--pkh-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--pkh-accent-2);
}

/* ---- Custom Scrollbars ---- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--pkh-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--pkh-accent);
    border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--pkh-accent-2);
}

/* ---- Navbar (Glassmorphic) ---- */
.app-navbar {
    background: var(--pkh-navbar-bg) !important;
    backdrop-filter: blur(18px) saturate(1.3);
    -webkit-backdrop-filter: blur(18px) saturate(1.3);
    border-bottom: 1px solid var(--pkh-border);
    padding: 0.65rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}
.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--pkh-text) !important;
}
.brand-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--pkh-accent), var(--pkh-accent-2));
    display: inline-block;
    box-shadow: 0 0 10px var(--pkh-glow);
}
.navbar-search {
    position: relative;
    max-width: 500px;
}
.navbar-search .form-control {
    background: var(--pkh-panel-2);
    border: 1px solid var(--pkh-border-subtle);
    color: var(--pkh-text);
    border-radius: var(--pkh-radius);
    padding: 0.4rem 1rem 0.4rem 2.25rem !important;
    font-size: 0.9rem;
    transition: all 0.25s ease;
}
.navbar-search::before {
    content: "\f002";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--pkh-text-muted);
    font-size: 0.85rem;
    pointer-events: none;
    z-index: 2;
}
.navbar-search .form-control:focus {
    background: var(--pkh-panel-3);
    border-color: var(--pkh-accent);
    box-shadow: 0 0 0 3px var(--pkh-glow);
    color: var(--pkh-text);
}
.search-dropdown {
    position: absolute;
    top: 115%;
    left: 0;
    right: 0;
    z-index: 1050;
    background: var(--pkh-panel);
    border: 1px solid var(--pkh-border);
    border-radius: var(--pkh-radius);
    box-shadow: 0 12px 40px rgba(0,0,0,0.5);
    max-height: 60vh;
    overflow-y: auto;
    display: none;
}
.search-dropdown.show {
    display: block;
}
.search-dropdown a {
    display: block;
    padding: 0.65rem 0.9rem;
    border-bottom: 1px solid var(--pkh-border-subtle);
    color: inherit;
    text-decoration: none;
}
.search-dropdown a:hover {
    background: var(--pkh-panel-2);
}
.search-dropdown .sd-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
}
.search-dropdown .sd-snippet {
    font-size: 0.8rem;
    color: var(--pkh-text-muted);
    margin-top: 2px;
}
.search-dropdown mark {
    background: var(--pkh-accent);
    color: #000;
    border-radius: 2px;
    padding: 0 2px;
}

/* Nav Links right align */
.navbar-nav-right .nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--pkh-text-muted) !important;
    font-size: 0.9rem;
    padding: 0.25rem 0.6rem !important;
    border-radius: 6px;
    transition: all 0.2s ease;
}
.navbar-nav-right .nav-link:hover {
    color: var(--pkh-text) !important;
    background: var(--pkh-panel-2);
}

/* ---- 3-Column Shell ---- */
.app-shell {
    display: grid;
    grid-template-columns: var(--pkh-sidebar-w) minmax(0, 1fr);
    min-height: calc(100vh - 57px);
}
.note-pane ~ .meta-rail, .app-shell:has(.meta-rail) {
    grid-template-columns: var(--pkh-sidebar-w) minmax(0, 1fr) var(--pkh-meta-w);
}
.sidebar {
    background: var(--pkh-panel);
    border-right: 1px solid var(--pkh-border);
    overflow-y: auto;
    max-height: calc(100vh - 57px);
}
.content-area {
    overflow-y: auto;
    max-height: calc(100vh - 57px);
}
.meta-rail {
    background: var(--pkh-panel);
    border-left: 1px solid var(--pkh-border);
    padding: 1.25rem 1rem;
    overflow-y: auto;
    max-height: calc(100vh - 57px);
}

/* ---- Sidebar Vault Tree ---- */
.tree-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--pkh-text-muted);
    border-bottom: 1px solid var(--pkh-border-subtle);
}
.vault-tree {
    padding-bottom: 2rem;
}
.tree-list {
    list-style: none;
    margin: 0;
    padding-left: 0.75rem;
}
.vault-tree > .tree-list {
    padding-left: 0.35rem;
}
.tree-list summary {
    cursor: pointer;
    padding: 0.3rem 0.45rem;
    border-radius: 6px;
    font-size: 0.88rem;
    font-weight: 500;
    user-select: none;
    transition: all 0.2s ease;
}
.tree-list summary:hover {
    background: var(--pkh-panel-2);
    color: var(--pkh-accent);
}
.tree-note a {
    display: block;
    padding: 0.3rem 0.45rem;
    border-radius: 6px;
    font-size: 0.86rem;
    color: inherit;
    text-decoration: none;
    transition: all 0.2s ease;
}
.tree-note a:hover {
    background: var(--pkh-panel-2);
    color: var(--pkh-accent);
}
.tree-note a.active {
    background: var(--pkh-accent) !important;
    color: #000 !important;
    font-weight: 600;
    box-shadow: 0 4px 12px var(--pkh-glow);
}
.ico {
    margin-right: 0.4rem;
    opacity: 0.8;
}

/* ---- Panel / Card Components ---- */
.panel {
    background: var(--pkh-panel);
    border: 1px solid var(--pkh-border);
    border-radius: var(--pkh-radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}
.panel-title {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pkh-text-muted);
    margin-bottom: 0.85rem;
}
.stat-card {
    background: var(--pkh-panel);
    border: 1px solid var(--pkh-border);
    border-radius: var(--pkh-radius);
    padding: 1.25rem;
    height: 100%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.25s ease, border-color 0.25s ease;
}
.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--pkh-accent);
}
.stat-num {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1;
    color: var(--pkh-accent);
}
.stat-label {
    color: var(--pkh-text-muted);
    font-size: 0.8rem;
    margin-top: 4px;
}

.list-flush {
    list-style: none;
    margin: 0;
    padding: 0;
}
.list-flush li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--pkh-border-subtle);
}
.list-flush li:last-child {
    border-bottom: 0;
}
.list-flush a {
    text-decoration: none;
    color: inherit;
    font-weight: 500;
    transition: color 0.2s ease;
}
.list-flush a:hover {
    color: var(--pkh-accent);
}
.list-flush .meta {
    display: block;
    font-size: 0.74rem;
    color: var(--pkh-text-muted);
    margin-top: 1px;
}

/* ---- Tags Redesign ---- */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}
.tag-chip {
    background: var(--pkh-panel-2);
    border: 1px solid var(--pkh-border-subtle);
    border-radius: 999px;
    padding: 0.25rem 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--pkh-text);
    text-decoration: none;
    transition: all 0.25s ease;
}
.tag-chip:hover {
    border-color: var(--pkh-accent);
    color: var(--pkh-accent);
    background: var(--pkh-glow);
}
.tag-chip .cnt {
    opacity: 0.5;
    font-size: 0.7rem;
    margin-left: 2px;
}
.tag-cloud-lg .tag-chip {
    font-size: 0.9rem;
    padding: 0.35rem 0.85rem;
}

/* ---- Note Toolbar & Breadcrumb ---- */
.note-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--pkh-border);
    position: sticky;
    top: 0;
    background: var(--pkh-bg);
    z-index: 10;
}
.note-breadcrumb {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--pkh-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.note-actions {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    flex-shrink: 0;
}
.save-status {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--pkh-text-muted);
    margin-right: 0.4rem;
}
.save-status.saving {
    color: var(--pkh-accent);
}
.save-status.saved {
    color: #38b000;
}
.save-status.error {
    color: #e5484d;
}

/* ---- Note Editor & EasyMDE Styling ---- */
.note-editor {
    padding: 1.25rem;
}
.editor-tools {
    margin-bottom: 0.75rem;
}
.markdown-body {
    padding: 1.5rem 2.25rem;
    max-width: 900px;
    font-size: 1.05rem;
    line-height: 1.7;
}

/* EasyMDE theme customization */
.EasyMDEContainer .CodeMirror {
    background: var(--pkh-panel) !important;
    color: var(--pkh-text) !important;
    border-color: var(--pkh-border) !important;
    border-radius: 0 0 var(--pkh-radius) var(--pkh-radius) !important;
    font-family: var(--font-mono) !important;
    font-size: 0.95rem !important;
}
.editor-toolbar {
    border-color: var(--pkh-border) !important;
    border-top: 1px solid var(--pkh-border) !important;
    border-left: 1px solid var(--pkh-border) !important;
    border-right: 1px solid var(--pkh-border) !important;
    border-radius: var(--pkh-radius) var(--pkh-radius) 0 0 !important;
    background: var(--pkh-panel) !important;
    position: sticky !important;
    top: 57px; /* Sits below sticky app-navbar */
    z-index: 100;
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    align-items: center;
    -webkit-overflow-scrolling: touch;
    padding: 0.5rem;
    gap: 6px;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.editor-toolbar::-webkit-scrollbar {
    display: none !important;
}
.editor-toolbar a,
.editor-toolbar button {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    color: var(--pkh-text) !important;
    background: transparent;
    border: 1px solid transparent !important;
    transition: all 0.2s ease;
    font-size: 0.9rem !important;
}
.editor-toolbar a:hover,
.editor-toolbar button:hover {
    background: var(--pkh-panel-2) !important;
    border-color: var(--pkh-border) !important;
    color: var(--pkh-accent) !important;
}
.editor-toolbar a.active,
.editor-toolbar button.active {
    background: var(--pkh-panel-3) !important;
    border-color: var(--pkh-accent) !important;
    color: var(--pkh-accent) !important;
}
.editor-toolbar .separator {
    display: inline-block !important;
    width: 1px;
    height: 20px;
    background: var(--pkh-border-subtle);
    margin: 0 4px;
    flex: 0 0 auto;
}
/* EasyMDE cursor fix */
[data-bs-theme="dark"] .EasyMDEContainer .CodeMirror-cursor {
    border-color: #fff !important;
}

/* Fix EasyMDE table button clash */
.editor-toolbar a.table,
.editor-toolbar button.table {
    display: inline-block !important;
    width: 36px !important;
    height: 36px !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 1px solid transparent !important;
    vertical-align: middle !important;
    background: none !important;
}

/* ---- Markdown Body Styles ---- */
.markdown-body h1, .markdown-body h2, .markdown-body h3, .markdown-body h4 {
    color: var(--pkh-text);
    border-bottom: 1px solid var(--pkh-border-subtle);
    padding-bottom: 0.35rem;
    margin-top: 1.75rem;
    font-family: var(--font-heading);
}
.markdown-body h1:first-child {
    margin-top: 0;
}
.markdown-body pre {
    background: var(--pkh-panel-2);
    border: 1px solid var(--pkh-border);
    border-radius: var(--pkh-radius);
    padding: 1.15rem;
    overflow-x: auto;
}
.markdown-body code {
    background: var(--pkh-panel-2);
    padding: 0.15em 0.35em;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.88em;
    color: var(--pkh-accent);
}
.markdown-body pre code {
    background: none;
    padding: 0;
    font-size: 0.9em;
    color: inherit;
}
.markdown-body blockquote {
    border-left: 3px solid var(--pkh-accent);
    margin: 1.25rem 0;
    padding: 0.25rem 1.15rem;
    color: var(--pkh-text-muted);
    background: var(--pkh-panel-2);
    border-radius: 0 8px 8px 0;
}
.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.25rem 0;
}
.markdown-body th, .markdown-body td {
    border: 1px solid var(--pkh-border);
    padding: 0.55rem 0.85rem;
}
.markdown-body th {
    background: var(--pkh-panel-2);
}
.markdown-body img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}
.markdown-body a.wikilink {
    color: var(--pkh-accent);
    text-decoration: none;
    border-bottom: 1px dashed var(--pkh-accent);
    transition: all 0.2s ease;
}
.markdown-body a.wikilink:hover {
    color: var(--pkh-accent-2);
    border-bottom-style: solid;
}
.markdown-body a.wikilink.missing {
    color: var(--pkh-text-muted);
    border-bottom-color: var(--pkh-text-muted2);
}
.markdown-body a.taglink {
    background: var(--pkh-panel-2);
    border-radius: 999px;
    padding: 0.1em 0.55rem;
    font-size: 0.8em;
    font-family: var(--font-mono);
    text-decoration: none;
    color: var(--pkh-accent);
    border: 1px solid var(--pkh-border-subtle);
    transition: all 0.2s ease;
}
.markdown-body a.taglink:hover {
    border-color: var(--pkh-accent);
    background: var(--pkh-glow);
}

/* ---- Search Results Page ---- */
.search-result {
    display: block;
    background: var(--pkh-panel);
    border: 1px solid var(--pkh-border);
    border-radius: var(--pkh-radius);
    padding: 1.1rem 1.25rem;
    margin-bottom: 0.85rem;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: border-color 0.2s ease, transform 0.2s ease;
}
.search-result:hover {
    border-color: var(--pkh-accent);
    transform: translateY(-2px);
}
.sr-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--pkh-accent);
}
.sr-path {
    font-size: 0.76rem;
    font-family: var(--font-mono);
    color: var(--pkh-text-muted);
    margin-bottom: 0.45rem;
}
.sr-snippet {
    font-size: 0.88rem;
    color: var(--pkh-text-muted);
}
.sr-snippet mark, .markdown-body mark {
    background: var(--pkh-accent);
    color: #000;
    border-radius: 3px;
    padding: 0 2px;
}

/* ---- Interactive Buttons Redesign ---- */
.btn {
    font-family: var(--font-body);
    font-weight: 600;
    border-radius: 8px;
    padding: 0.45rem 1.1rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-primary {
    background: linear-gradient(135deg, var(--pkh-accent), var(--pkh-accent-2)) !important;
    border: none !important;
    color: #000 !important;
    box-shadow: 0 4px 12px var(--pkh-glow);
}
.btn-primary:hover:not(:disabled) {
    transform: translateY(-1.5px);
    box-shadow: 0 6px 18px rgba(255, 107, 0, 0.35);
    filter: brightness(1.1);
}
.btn-success {
    background: linear-gradient(135deg, #38b000, #007200) !important;
    border: none !important;
    color: #fff !important;
    box-shadow: 0 4px 12px rgba(56, 176, 0, 0.2);
}
.btn-success:hover:not(:disabled) {
    transform: translateY(-1.5px);
    box-shadow: 0 6px 18px rgba(56, 176, 0, 0.35);
    filter: brightness(1.1);
}
.btn-outline-secondary {
    border: 1px solid var(--pkh-border-subtle);
    background: var(--pkh-panel);
    color: var(--pkh-text-muted);
}
.btn-outline-secondary:hover:not(:disabled),
.btn-outline-secondary.active {
    background: var(--pkh-panel-2) !important;
    border-color: var(--pkh-accent) !important;
    color: var(--pkh-accent) !important;
}
.btn-outline-danger {
    border: 1px solid rgba(229, 72, 77, 0.3);
    background: transparent;
    color: #e5484d;
}
.btn-outline-danger:hover:not(:disabled) {
    background: #e5484d !important;
    border-color: #e5484d !important;
    color: #fff !important;
    box-shadow: 0 4px 12px rgba(229, 72, 77, 0.2);
}

/* ---- Panel Sidebar Toggles ---- */
#workspace.left-collapsed .sidebar {
    display: none;
}
#workspace.left-collapsed {
    grid-template-columns: minmax(0, 1fr) var(--pkh-meta-w) !important;
}
#workspace.left-collapsed.right-collapsed,
#workspace.left-collapsed:not(:has(.meta-rail)) {
    grid-template-columns: minmax(0, 1fr) !important;
}
#workspace.right-collapsed .meta-rail {
    display: none;
}
#workspace.right-collapsed {
    grid-template-columns: var(--pkh-sidebar-w) minmax(0, 1fr) !important;
}
#workspace.left-collapsed.right-collapsed {
    grid-template-columns: minmax(0, 1fr) !important;
}

.panel-toggle {
    font-size: 0.95rem;
    padding: 0.25rem 0.55rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.panel-toggle.active {
    background: var(--pkh-accent) !important;
    color: #000 !important;
    border-color: var(--pkh-accent) !important;
    box-shadow: 0 4px 12px var(--pkh-glow);
}

/* ---- New Note Inline Input Bar ---- */
.new-note-bar {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--pkh-border);
    background: var(--pkh-panel-2);
    flex-wrap: wrap;
}
.new-note-bar input {
    flex: 1;
    min-width: 200px;
    padding: 0.45rem 0.85rem;
    border: 1px solid var(--pkh-border-subtle);
    border-radius: 6px;
    background: var(--pkh-panel);
    color: inherit;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}
.new-note-bar input:focus {
    outline: none;
    border-color: var(--pkh-accent);
    box-shadow: 0 0 0 3px var(--pkh-glow);
}

/* ---- Login Card Standalone ---- */
.login-body {
    display: grid;
    place-items: center;
    min-height: 100vh;
    background: radial-gradient(1200px 600px at 50% -10%, var(--pkh-glow), transparent), var(--pkh-bg);
}
.login-card {
    width: 100%;
    max-width: 390px;
    background: var(--pkh-panel);
    border: 1px solid var(--pkh-border);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}
.login-brand {
    text-align: center;
    margin-bottom: 2rem;
}
.login-brand h1 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    margin: 0.75rem 0 0.25rem;
    font-weight: 700;
}
.login-brand .brand-dot {
    width: 44px;
    height: 44px;
    box-shadow: 0 0 15px var(--pkh-glow);
}
.login-card .form-control {
    background: var(--pkh-panel-2);
    border: 1px solid var(--pkh-border-subtle);
    color: var(--pkh-text);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
}
.login-card .form-control:focus {
    background: var(--pkh-panel-3);
    border-color: var(--pkh-accent);
    box-shadow: 0 0 0 3px var(--pkh-glow);
}
.login-card .form-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pkh-text-muted);
    margin-bottom: 0.35rem;
}

/* ---- Mobile Bottom Navigation ---- */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    z-index: 1040;
    background: var(--pkh-navbar-bg);
    backdrop-filter: blur(18px) saturate(1.3);
    -webkit-backdrop-filter: blur(18px) saturate(1.3);
    border-top: 1px solid var(--pkh-border);
    display: flex;
    align-items: stretch;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
}
.mbn-btn {
    flex: 1;
    border: none;
    background: none;
    color: var(--pkh-text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    cursor: pointer;
    padding: 0;
    transition: color 0.2s, background 0.2s;
    -webkit-tap-highlight-color: transparent;
    min-height: 60px;
}
.mbn-btn:active, .mbn-btn.active {
    color: var(--pkh-accent);
    background: var(--pkh-panel-2);
}
.mbn-btn:disabled {
    opacity: 0.35;
    cursor: default;
}
.mbn-icon {
    font-size: 1.4rem;
    line-height: 1.2;
}
.mbn-label {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    letter-spacing: 0.02em;
    font-weight: 600;
}

/* =========================================================================
   Responsive Media Queries (Mobile & Small Viewports)
   ========================================================================= */
@media (max-width: 992px) {
    /* Mobile Navbar Spacing */
    .app-navbar .container-fluid {
        flex-direction: column;
        align-items: stretch !important;
    }
    .navbar-search {
        margin: 0.5rem 0 0.8rem 0 !important;
        width: 100%;
        max-width: 100%;
    }
    .navbar-nav-right {
        width: 100%;
        justify-content: space-between;
    }

    /* Hide top navbar when viewing a note on mobile */
    body.mobile-note-active .app-navbar {
        display: none !important;
    }
    body.mobile-note-active .content-area {
        max-height: calc(100vh - 60px) !important;
        max-height: calc(100dvh - 60px) !important;
        overflow-y: auto !important;
    }
    body.mobile-note-active .note-toolbar {
        position: sticky !important;
        top: 0 !important;
        z-index: 200 !important;
        background: var(--pkh-bg) !important;
        border-bottom: 1px solid var(--pkh-border) !important;
    }

    /* Disable outer body scrolling and remove body bottom padding during active mobile note reading/editing */
    body.mobile-note-active,
    body.mobile-editing {
        padding-bottom: 0 !important;
        overflow: hidden !important;
    }

    /* 1-column layouts & display adjustments */
    .app-shell, .app-shell:has(.meta-rail) {
        grid-template-columns: 1fr;
    }
    .app-shell .sidebar {
        display: none;
    }
    #btnToggleLeft {
        display: none !important;
    }
    #noteBreadcrumb .text-muted {
        display: none !important;
    }
    #workspace.left-collapsed,
    #workspace.right-collapsed,
    #workspace.left-collapsed.right-collapsed {
        grid-template-columns: 1fr !important;
    }

    #workspace .sidebar, 
    #workspace .content-area, 
    #workspace .meta-rail { 
        display: none; 
    }

    #workspace.show-sidebar .sidebar {
        display: block !important;
        width: 100% !important;
        max-width: 100% !important;
        max-height: calc(100vh - 57px - 60px) !important;
    }
    
    #workspace.show-note .content-area {
        display: block !important;
        width: 100% !important;
        max-width: 100% !important;
        max-height: calc(100vh - 57px - 60px) !important;
        max-height: calc(100dvh - 57px - 60px) !important;
        overflow-y: auto !important;
    }

    /* ---- Mobile Active Editing Mode ---- */
    body.mobile-editing .app-navbar {
        display: none !important;
    }
    
    body.mobile-editing .note-toolbar {
        /* FIXED: Make toolbar relative on mobile edit, so it scrolls away naturally.
           Allows editor-toolbar (markdown tools) to stick to the very top. */
        position: relative !important;
        top: auto !important;
        flex-wrap: wrap;
        gap: 0.25rem;
        padding: 0.4rem 0.5rem;
        background: var(--pkh-bg);
    }
    
    body.mobile-editing .note-editor {
        padding: 0.25rem !important;
        margin: 0 !important;
    }
    
    body.mobile-editing .content-area {
        max-height: calc(100vh - 60px) !important;
        max-height: calc(100dvh - 60px) !important;
        overflow-y: auto !important;
    }
    
    body.mobile-editing .EasyMDEContainer {
        display: flex !important;
        flex-direction: column !important;
    }
    
    body.mobile-editing .EasyMDEContainer .editor-toolbar {
        flex-shrink: 0;
        position: sticky !important;
        top: 0 !important; /* FIXED: Sticks cleanly to the top of screen now */
        z-index: 200 !important;
        border-radius: 0 !important;
        border-top: none !important;
        border-left: none !important;
        border-right: none !important;
        background: var(--pkh-panel) !important;
    }
    
    body.mobile-editing .EasyMDEContainer .CodeMirror {
        height: auto !important;
        min-height: 300px !important;
    }
    body.mobile-editing .EasyMDEContainer .CodeMirror-scroll {
        height: auto !important;
        min-height: 300px !important;
        overflow-y: hidden !important;
    }

    /* Remove border rails on mobile layout */
    .sidebar, .meta-rail {
        max-height: none;
        border: none;
    }
    .meta-rail {
        border-left: 0;
        border-top: 1px solid var(--pkh-border);
    }
    .sidebar {
        border-right: 0;
        border-bottom: 1px solid var(--pkh-border);
    }

    body {
        padding-bottom: 60px; /* Space for fixed mobile bottom nav */
    }
    .app-shell {
        min-height: calc(100vh - 57px - 60px);
        min-height: calc(100dvh - 57px - 60px);
    }
    .content-area {
        max-height: calc(100vh - 57px - 60px);
        max-height: calc(100dvh - 57px - 60px);
    }

    /* Ensure CodeMirror editor adjusts well */
    .note-editor {
        padding: 0 !important;
    }
    .EasyMDEContainer {
        width: 100%;
    }
    .EasyMDEContainer .CodeMirror {
        min-height: 320px;
        font-size: 16px; /* Prevents auto zoom-in behavior on iOS safari */
    }

    /* Touch screen friendly sizing */
    .btn {
        padding: 0.5rem 0.85rem;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    .btn-sm {
        padding: 0.4rem 0.75rem;
        min-height: 40px;
    }
    .panel-toggle {
        min-width: 44px;
        min-height: 44px;
    }

    .note-toolbar {
        gap: 0.65rem;
        padding: 0.5rem;
        flex-wrap: wrap;
    }
    .note-breadcrumb {
        font-size: 0.9rem;
    }
    .note-actions {
        gap: 0.3rem;
        flex-wrap: wrap;
    }

    /* Inputs optimized for touch typing */
    input[type="text"],
    textarea:not(.CodeMirror-code),
    .form-control:not(.CodeMirror) {
        font-size: 16px !important; /* Prevents auto-zoom on mobile safari */
        min-height: 44px;
        padding: 0.5rem;
    }
    #editorArea {
        min-height: unset !important;
        height: auto !important;
    }

    /* Sidebar list spacing */
    .sidebar {
        padding: 0.5rem 0;
    }
    .tree-head {
        padding: 0.5rem 0.75rem;
    }
    .tree-list {
        padding-left: 0.6rem;
    }
    .tree-list summary {
        padding: 0.45rem 0.6rem;
        font-size: 0.95rem;
    }
    .tree-note a {
        padding: 0.45rem 0.6rem;
        font-size: 0.92rem;
    }

    .panel {
        padding: 0.85rem;
        margin-bottom: 0.75rem;
    }
    .panel-title {
        font-size: 0.8rem;
        margin-bottom: 0.6rem;
    }

    .editor-tools {
        margin-bottom: 0.75rem;
    }
    .editor-tools .btn {
        min-height: 40px;
    }

    .markdown-body {
        padding: 1.15rem 0.85rem;
    }
    .markdown-body h1, .markdown-body h2 {
        margin-top: 1.25rem;
    }

    .search-dropdown {
        max-height: 50vh;
    }
    .search-dropdown a {
        padding: 0.6rem 0.85rem;
    }

    .login-card {
        padding: 2rem 1.5rem;
        margin: 1.25rem;
    }

    .new-note-bar {
        flex-wrap: wrap;
        padding: 0.85rem;
    }
    .new-note-bar input {
        flex: 1;
        min-width: 150px;
    }
}