/* ==========================================================================
   BEAMLINE TOOLKIT — Academic Print & Monograph Design System
   Specifications:
   - Paper Background: #fdfcf8
   - Ink Foreground: #1a1a1a
   - Body Font: Georgia, "Liberation Serif", "DejaVu Serif", "Times New Roman", serif
   - Number/Input/Result Font: Consolas, "Liberation Mono", "DejaVu Sans Mono", monospace
   - Single Accent Color: #003366 (Deep Oxford Navy Ink)
   - Zero Emojis, Zero Box-Shadows, Zero Border-Radius, Zero Gradients
   - Fine Border Lines (0.75px ~ 1.5px solid #1a1a1a / #d5d3cc)
   - CSS 2.1 + Flexbox (No CSS Grid, No CSS Flex gap)
   - Zero Webfonts (Pure OS system font stack)
   - Full @media print support for physical datasheet output
   ========================================================================== */

:root {
  /* Core Academic Monochrome Palette */
  --bg-paper: #fdfcf8;
  --bg-paper-subtle: #f6f4eb;
  --bg-paper-hover: #ece9db;
  --bg-paper-active: #e3dfce;
  
  --ink-primary: #1a1a1a;
  --ink-secondary: #4a4a4a;
  --ink-muted: #737373;
  --ink-faint: #999999;
  --ink-inverse: #fdfcf8;

  /* Single Accent Color (Deep Oxford Navy Ink) */
  --accent-ink: #003366;
  --accent-ink-hover: #002244;
  --accent-ink-subtle: #edf3f8;

  /* Fine Boundary Lines */
  --rule-heavy: 1.5px solid #1a1a1a;
  --rule-main: 1px solid #1a1a1a;
  --rule-light: 1px solid #d5d3cc;
  --rule-faint: 1px solid #e8e5dc;

  /* Academic Typography Stack */
  --font-serif: Georgia, "Liberation Serif", "DejaVu Serif", "Times New Roman", "Nanum Myeongjo", "Batang", serif;
  --font-mono: Consolas, "Liberation Mono", "DejaVu Sans Mono", "Courier New", Courier, monospace;
  --font-sans: "Helvetica Neue", Helvetica, Arial, "Liberation Sans", sans-serif;

  /* Dimensions */
  --sidebar-width: 220px;
  --header-height: 48px;
}

/* Inverted Dark Mode Variables (Pure Academic Inverted Ink) */
[data-theme="dark"] {
  --bg-paper: #121417;
  --bg-paper-subtle: #1a1e24;
  --bg-paper-hover: #262c35;
  --bg-paper-active: #323a45;
  
  --ink-primary: #fdfcf8;
  --ink-secondary: #d0cec5;
  --ink-muted: #94928b;
  --ink-faint: #63615a;
  --ink-inverse: #121417;

  --accent-ink: #5ca4e6;
  --accent-ink-hover: #8cc4ff;
  --accent-ink-subtle: #0d2847;

  --rule-heavy: 1.5px solid #fdfcf8;
  --rule-main: 1px solid #fdfcf8;
  --rule-light: 1px solid #3c424d;
  --rule-faint: 1px solid #282c33;
}

/* Base Reset (Zero Radius, Zero Shadows, Zero Gradients) */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important;
  box-shadow: none !important;
  text-shadow: none !important;
  background-image: none !important;
}

html, body {
  width: 100%;
  max-width: 100%;
  height: 100%;
  overflow-x: hidden; /* Prevent horizontal scroll on window/body */
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-ink);
}

a:hover {
  background-color: var(--accent-ink);
  color: var(--ink-inverse);
  border-bottom: none;
}

/* Mathematical Formulae and Italic Serif */
i, em, var, .formula, .math {
  font-family: var(--font-serif);
  font-style: italic;
}

sup, sub {
  font-size: 78%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}

.mono {
  font-family: var(--font-mono);
}

.serif {
  font-family: var(--font-serif);
}

/* Application Layout */
#app-layout {
  display: flex;
  width: 100%;
  max-width: 100%;
  min-height: 100%;
  overflow-x: hidden;
  background-color: var(--bg-paper);
}

/* Left Academic Navigation Sidebar */
#sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background-color: var(--bg-paper-subtle);
  border-right: var(--rule-main);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  z-index: 100;
}

.sidebar-header {
  height: var(--header-height);
  padding: 0 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: var(--rule-main);
  background-color: var(--bg-paper);
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--ink-primary);
  text-transform: uppercase;
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  border: var(--rule-main);
  padding: 1px 4px;
  background: var(--bg-paper);
  color: var(--ink-primary);
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 10px 0;
}

.nav-section-title {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  padding: 12px 14px 4px 14px;
  border-bottom: var(--rule-light);
  margin-bottom: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 14px;
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--ink-primary);
  text-decoration: none;
  border-bottom: none;
  border-left: 3px solid transparent;
  cursor: pointer;
}

.nav-item:hover {
  background-color: var(--bg-paper-hover);
  color: var(--ink-primary);
  border-left-color: var(--ink-muted);
}

.nav-item.active {
  background-color: var(--bg-paper);
  color: var(--accent-ink);
  font-weight: 700;
  border-left: 3px solid var(--accent-ink);
  border-top: var(--rule-light);
  border-bottom: var(--rule-light);
}

.nav-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-muted);
  border: 1px solid var(--ink-faint);
  padding: 0 4px;
}

.sidebar-footer {
  padding: 10px 14px;
  border-top: var(--rule-main);
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--ink-muted);
  background-color: var(--bg-paper);
  line-height: 1.4;
}

/* Main Viewport Wrapper */
#main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  width: calc(100% - var(--sidebar-width));
  max-width: 100%;
  overflow-x: hidden; /* 가로 스크롤 절대 방지 */
  background-color: var(--bg-paper);
}

/* Top Running Header (Academic Masthead) */
#top-header {
  height: var(--header-height);
  min-height: var(--header-height);
  border-bottom: var(--rule-light);
  background-color: var(--bg-paper);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  position: sticky;
  top: 0;
  z-index: 95;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.header-brand-area {
  display: flex;
  align-items: center;
}

.page-breadcrumb {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-ink);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 0;
  white-space: nowrap;
}

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--ink-muted);
  font-weight: 400;
}

.header-right {
  display: flex;
  align-items: center;
}

#header-live-time {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
  margin-right: 14px;
  white-space: nowrap;
}

.header-btn {
  font-family: var(--font-serif);
  font-size: 11px;
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  border: var(--rule-main);
  padding: 4px 10px;
  cursor: pointer;
  white-space: nowrap;
  min-width: 76px;
  text-align: center;
  box-sizing: border-box;
}

.header-btn:hover {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
}

/* ==========================================================================
   Dedicated Horizontal Tab Strip (Horizontally Scrollable, Highly Visible)
   ========================================================================== */
#top-tab-strip {
  width: 100%;
  max-width: 100%;
  background-color: var(--bg-paper-subtle);
  border-bottom: var(--rule-heavy);
  position: sticky;
  top: var(--header-height);
  z-index: 90;
  box-sizing: border-box;
  overflow: hidden;
}

.tab-strip-scroll {
  display: flex;
  align-items: center;
  padding: 6px 14px;
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  width: 100%;
  box-sizing: border-box;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-muted) var(--bg-paper-subtle);
}

.tab-strip-scroll::-webkit-scrollbar {
  height: 4px;
}
.tab-strip-scroll::-webkit-scrollbar-thumb {
  background-color: var(--ink-muted);
}
.tab-strip-scroll::-webkit-scrollbar-track {
  background-color: var(--bg-paper-subtle);
}

.tab-pill {
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  margin-right: 6px;
  border: var(--rule-main);
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  line-height: 1.3;
}

.tab-pill:hover {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
}

.tab-pill.active {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
  font-weight: 700;
  border: 1.5px solid var(--ink-primary);
}

/* Sub-navigation Jump Bar inside Views */
.sub-nav-tabs {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: var(--rule-light);
  max-width: 100%;
}

.sub-tab-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  border: var(--rule-main);
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  padding: 2px 7px;
  margin-right: 6px;
  margin-bottom: 4px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.sub-tab-btn:hover {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
  border-color: var(--ink-primary);
}

.header-right {
  display: flex;
  align-items: center;
  padding: 6px 0;
  flex-shrink: 0;
  margin-left: 10px;
}

#header-live-time {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
  margin-right: 14px;
  white-space: nowrap;
}

.header-btn {
  font-family: var(--font-serif);
  font-size: 11px;
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  border: var(--rule-main);
  padding: 4px 10px;
  cursor: pointer;
  white-space: nowrap;
}

.header-btn:hover {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
}

/* Main Content Area (Fixed without horizontal scroll) */
#content-area {
  flex: 1;
  padding: 20px 24px 48px 24px;
  overflow-y: auto;
  overflow-x: hidden; /* 컨텐츠 영역은 가로 스크롤 완전 방지 고정 */
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

/* View Sections */
.view-section {
  display: none;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden; /* 가로 스크롤 방지 */
  box-sizing: border-box;
}

.view-section.active {
  display: block;
}

/* Academic Section Header & Divider */
.section-banner {
  border-bottom: var(--rule-heavy);
  padding-bottom: 12px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.banner-info h2 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink-primary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}

.banner-info p {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--ink-secondary);
  font-style: italic;
}

.banner-actions {
  display: flex;
  align-items: center;
}

/* Flexbox Grid System (No CSS Grid, No Flex gap - CentOS 7 Safe) */
.flex-row {
  display: flex;
  flex-wrap: wrap;
  margin-left: -10px;
  margin-right: -10px;
}

.col-12 { width: 100%; padding: 0 10px; margin-bottom: 18px; }
.col-8  { width: 66.6667%; padding: 0 10px; margin-bottom: 18px; }
.col-6  { width: 50%; padding: 0 10px; margin-bottom: 18px; }
.col-4  { width: 33.3333%; padding: 0 10px; margin-bottom: 18px; }
.col-3  { width: 25%; padding: 0 10px; margin-bottom: 18px; }

@media (max-width: 900px) {
  .col-8, .col-6, .col-4, .col-3 { width: 100%; }
  #sidebar { display: none; }
}

/* Fine-Rule Section Box (Replacing Cards with Academic Borders) */
.card {
  background-color: var(--bg-paper);
  border: var(--rule-main);
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
}

.card-header {
  padding: 8px 12px;
  background-color: var(--bg-paper-subtle);
  border-bottom: var(--rule-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-primary);
  letter-spacing: 0.02em;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-ink);
  font-style: normal;
}

.card-body {
  padding: 14px 14px;
  flex: 1;
  background-color: var(--bg-paper);
}

/* Dashboard Quick Tool Panels */
.tool-tile {
  border: var(--rule-main);
  background-color: var(--bg-paper);
  padding: 12px;
  cursor: pointer;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.tool-tile:hover {
  background-color: var(--bg-paper-hover);
  border-color: var(--accent-ink);
}

.tile-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  border-bottom: var(--rule-light);
  padding-bottom: 4px;
}

.tile-section-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-ink);
}

.tile-title {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 4px;
}

.tile-desc {
  font-size: 11px;
  color: var(--ink-secondary);
  line-height: 1.4;
}

/* Academic Forms & Monospace Inputs */
.form-group {
  margin-bottom: 10px;
}

.form-label {
  display: block;
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-primary);
  margin-bottom: 3px;
}

.form-label .unit {
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--ink-muted);
  font-size: 11px;
}

.form-control {
  width: 100%;
  height: 30px;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  border: var(--rule-main);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent-ink);
  background-color: #ffffff;
}

.form-control-sm {
  height: 24px;
  padding: 2px 6px;
  font-size: 11px;
}

textarea.form-control {
  height: auto;
  min-height: 80px;
  line-height: 1.45;
  resize: vertical;
}

select.form-control {
  height: 30px;
  cursor: pointer;
  background-color: var(--bg-paper);
}

/* Preset Buttons Bar */
.preset-bar {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.preset-chip {
  font-family: var(--font-mono);
  font-size: 10px;
  border: var(--rule-main);
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  padding: 2px 6px;
  margin-right: 4px;
  margin-bottom: 4px;
  cursor: pointer;
}

.preset-chip:hover {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
}

/* Calculated Results Box */
.result-box {
  margin-top: 12px;
  padding: 10px 12px;
  border: var(--rule-main);
  background-color: var(--bg-paper-subtle);
}

.result-box.highlight {
  border: var(--rule-heavy);
  background-color: var(--accent-ink-subtle);
}

.result-label {
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--ink-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

.result-value {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-primary);
}

.result-value.primary {
  color: var(--accent-ink);
}

.result-grid {
  display: flex;
  flex-wrap: wrap;
  margin-left: -6px;
  margin-right: -6px;
}

.result-item {
  flex: 1;
  min-width: 120px;
  padding: 4px 6px;
}

.result-formula {
  margin-top: 8px;
  padding-top: 6px;
  border-top: var(--rule-light);
  font-size: 11px;
  color: var(--ink-secondary);
  font-family: var(--font-serif);
}

/* Academic Buttons (Rectangular, Inverted on Hover) */
.btn {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  padding: 5px 12px;
  border: var(--rule-main);
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  outline: none;
  line-height: 1.2;
}

.btn:hover {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
}

.btn:active {
  background-color: #333333;
  color: var(--bg-paper);
}

.btn-primary {
  background-color: var(--accent-ink);
  color: var(--bg-paper);
  border-color: var(--accent-ink);
}

.btn-primary:hover {
  background-color: var(--accent-ink-hover);
  color: #ffffff;
  border-color: var(--accent-ink-hover);
}

.btn-secondary {
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  border: var(--rule-main);
}

.btn-secondary:hover {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
}

.btn-danger {
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  border: 1px solid #880000;
}

.btn-danger:hover {
  background-color: #880000;
  color: #ffffff;
}

.btn-sm {
  padding: 3px 8px;
  font-size: 11px;
}

.btn-block {
  display: block;
  width: 100%;
  margin-top: 8px;
}

/* Academic Badges & Status Indicators (Monochrome) */
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 1px 5px;
  border: var(--rule-main);
  background-color: var(--bg-paper);
  color: var(--ink-primary);
  text-transform: uppercase;
}

.badge-subtle {
  border: var(--rule-light);
  color: var(--ink-muted);
}

.badge-blue, .badge-green, .badge-orange, .badge-red {
  border: var(--rule-main);
  background-color: var(--bg-paper);
  color: var(--ink-primary);
}

/* Booktabs Academic Tables (\toprule, \midrule, \bottomrule) */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.lab-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  text-align: left;
  border-top: var(--rule-heavy);   /* \toprule */
  border-bottom: var(--rule-heavy);/* \bottomrule */
}

.lab-table th {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--ink-primary);
  padding: 6px 10px;
  border-bottom: var(--rule-main); /* \midrule */
  background-color: var(--bg-paper-subtle);
}

.lab-table td {
  padding: 6px 10px;
  color: var(--ink-primary);
  border-bottom: var(--rule-light);
  vertical-align: middle;
}

.lab-table tr:last-child td {
  border-bottom: none;
}

.lab-table tbody tr:hover td {
  background-color: var(--bg-paper-hover);
}

/* Logbook Item Styling */
.log-entry-item {
  border: var(--rule-main);
  background-color: var(--bg-paper);
  margin-bottom: 10px;
  padding: 10px 12px;
}

.log-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: var(--rule-light);
  padding-bottom: 4px;
  margin-bottom: 6px;
  font-size: 11px;
}

.log-entry-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 13px;
  color: var(--ink-primary);
}

.log-entry-params {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-ink);
  margin-bottom: 6px;
}

.log-entry-memo {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--ink-secondary);
  line-height: 1.4;
}

.log-entry-tags {
  margin-top: 6px;
}

.log-tag-chip {
  font-family: var(--font-mono);
  font-size: 10px;
  border: var(--rule-light);
  padding: 1px 4px;
  margin-right: 4px;
  color: var(--ink-muted);
  cursor: pointer;
}

.log-tag-chip:hover {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
  border-color: var(--ink-primary);
}

/* Kanban Board Academic Style */
.kanban-board {
  display: flex;
  margin-left: -6px;
  margin-right: -6px;
}

.kanban-col {
  flex: 1;
  padding: 0 6px;
  min-width: 140px;
}

.kanban-col-inner {
  border: var(--rule-main);
  background-color: var(--bg-paper-subtle);
  min-height: 240px;
  padding: 8px;
}

.kanban-col-title {
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 6px;
  border-bottom: var(--rule-main);
  margin-bottom: 8px;
}

.kanban-task-card {
  border: var(--rule-main);
  background-color: var(--bg-paper);
  padding: 6px 8px;
  margin-bottom: 6px;
  font-size: 11px;
}

.kanban-task-title {
  font-weight: 700;
  font-family: var(--font-serif);
  margin-bottom: 4px;
}

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 10000;
}

.toast {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
  border: var(--rule-main);
  padding: 8px 14px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
}

.toast-info, .toast-success, .toast-warning, .toast-danger {
  background-color: var(--ink-primary);
  color: var(--bg-paper);
}

/* Footnotes & Academic Reference Footer */
#academic-footer {
  margin-top: 40px;
  border-top: var(--rule-heavy);
  padding-top: 18px;
  color: var(--ink-secondary);
  font-size: 11px;
}

.footer-title {
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.footer-constants-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.footer-constants-table th, .footer-constants-table td {
  padding: 4px 8px;
  border-bottom: var(--rule-light);
  text-align: left;
}

.footer-constants-table th {
  border-top: var(--rule-main);
  border-bottom: var(--rule-main);
  background-color: var(--bg-paper-subtle);
  font-weight: 700;
  color: var(--ink-primary);
}

.footer-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: var(--rule-main);
  padding-top: 8px;
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--ink-muted);
}

/* Responsive Breakpoint for Mobile / Small Screens */
@media (max-width: 768px) {
  #sidebar {
    display: none;
  }
  #main-wrapper {
    width: 100%;
  }
  .col-12, .col-8, .col-6, .col-4, .col-3 {
    width: 100%;
  }
  #content-area {
    padding: 16px 14px 40px 14px;
  }
}

/* ==========================================================================
   @media print — Physical Monograph & Datasheet Printing
   ========================================================================== */
@media print {
  @page {
    size: A4 portrait;
    margin: 12mm 15mm 15mm 15mm;
  }

  body {
    background-color: #ffffff !important;
    color: #000000 !important;
    font-size: 10pt !important;
    line-height: 1.4 !important;
  }

  /* Hide interactive chrome */
  #sidebar,
  #top-header,
  #toast-container,
  .banner-actions,
  .header-btn,
  .btn,
  button,
  input[type="button"],
  input[type="submit"],
  .no-print,
  #bragg-presets,
  .preset-bar {
    display: none !important;
  }

  #main-wrapper {
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
  }

  #content-area {
    padding: 0 !important;
    overflow: visible !important;
  }

  /* Make view visible in print */
  .view-section {
    display: block !important;
    margin-bottom: 24pt;
    page-break-after: auto;
  }

  .section-banner {
    border-bottom: 1.5pt solid #000000 !important;
    margin-bottom: 12pt !important;
    padding-bottom: 6pt !important;
  }

  .banner-info h2 {
    font-size: 14pt !important;
    color: #000000 !important;
  }

  .card, .tool-tile, .result-box, .kanban-col-inner {
    border: 0.75pt solid #000000 !important;
    background-color: #ffffff !important;
    break-inside: avoid;
    page-break-inside: avoid;
    margin-bottom: 12pt !important;
  }

  .card-header {
    background-color: #f4f4f4 !important;
    border-bottom: 0.75pt solid #000000 !important;
  }

  .lab-table {
    border-top: 1.5pt solid #000000 !important;
    border-bottom: 1.5pt solid #000000 !important;
    font-size: 9pt !important;
  }

  .lab-table th {
    background-color: #f4f4f4 !important;
    border-bottom: 0.75pt solid #000000 !important;
  }

  .lab-table td {
    border-bottom: 0.5pt solid #cccccc !important;
  }

  .form-control {
    border: 0.5pt solid #666666 !important;
    background: transparent !important;
    color: #000000 !important;
    font-size: 9pt !important;
    height: auto !important;
    padding: 2pt 4pt !important;
  }

  .col-12, .col-8, .col-6, .col-4, .col-3 {
    padding: 0 6pt !important;
    margin-bottom: 10pt !important;
  }

  #academic-footer {
    border-top: 1.5pt solid #000000 !important;
    break-inside: avoid;
    page-break-inside: avoid;
  }
}