/* ════════════════════════════════════════════════════════
   main.css  —  Nexus Docs global styles
   ════════════════════════════════════════════════════════ */

/* ── CSS Variables (design tokens) ─────────────────────── */
:root {
  --bg:       #f5f0e8;
  --surface:  #fffdf8;
  --surface2: #f0ebe0;
  --border:   #e2d9c8;
  --accent:   #b5853a;
  --accent2:  #d4a055;
  --text:     #1e1a14;
  --muted:    #8a7e6e;
  --green:    #3a7d52;
  --yellow:   #b07d20;
  --red:      #b04040;
  --blue:     #3a5fa0;
  --shadow:   rgba(100, 80, 40, 0.08);
}

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

body {
  background:  var(--bg);
  color:       var(--text);
  font-family: 'DM Sans', sans-serif;
  min-height:  100vh;
}

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  position:     fixed;
  left:         0; top: 0;
  width:        240px;
  height:       100vh;
  background:   var(--surface);
  border-right: 1px solid var(--border);
  display:      flex;
  flex-direction: column;
  padding:      24px 0;
  z-index:      100;
  box-shadow:   2px 0 12px var(--shadow);
}

.logo        { padding: 0 24px 32px; }
.logo-name   { font-family: 'DM Serif Display', serif; font-size: 30px; color: var(--text); letter-spacing: -0.5px; }

.nav-item {
  display:      flex;
  align-items:  center;
  gap:          12px;
  padding:      11px 24px;
  color:        var(--muted);
  font-size:    14px;
  font-weight:  500;
  cursor:       pointer;
  transition:   .15s;
  border-left:  2px solid transparent;
}
.nav-item:hover  { color: var(--text); background: var(--surface2); }
.nav-item.active { color: var(--accent); border-left-color: var(--accent); background: rgba(181,133,58,.07); }

.sidebar-footer { margin-top: auto; padding: 24px; border-top: 1px solid var(--border); font-size: 11px; color: var(--muted); }

/* ── Main area ───────────────────────────────────────────── */
.main    { margin-left: 240px; min-height: 100vh; }
.topbar  {
  position:     sticky; top: 0; z-index: 50;
  background:   rgba(245,240,232,.93);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding:      16px 32px;
  display:      flex; align-items: center; justify-content: space-between;
  box-shadow:   0 2px 8px var(--shadow);
}
.page-title { font-family: 'DM Serif Display', serif; font-size: 24px; }
.content    { padding: 32px; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  padding:      9px 18px;
  border-radius: 8px;
  font-size:    13px;
  font-weight:  600;
  cursor:       pointer;
  border:       none;
  font-family:  'DM Sans', sans-serif;
  transition:   .15s;
}
.btn-primary       { background: var(--accent);    color: #fff; box-shadow: 0 2px 8px rgba(181,133,58,.25); }
.btn-primary:hover { background: var(--accent2); }
.btn-ghost         { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-ghost:hover   { color: var(--text); border-color: var(--muted); background: var(--surface2); }
.btn-sm            { padding: 5px 12px; font-size: 12px; }

/* ── Dashboard stat cards ────────────────────────────────── */
.stats-grid   { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-bottom: 32px; }
.stat-card    {
  background:   var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px 24px;
  position:     relative; overflow: hidden;
  box-shadow:   0 2px 12px var(--shadow);
}
.stat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--accent); }
.stat-icon  { font-size: 22px; margin-bottom: 10px; }
.stat-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 6px; font-weight: 600; }
.stat-value { font-family: 'DM Serif Display', serif; font-size: 32px; }
.stat-sub   { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* ── Toolbar ─────────────────────────────────────────────── */
.toolbar    { display: flex; gap: 12px; margin-bottom: 20px; align-items: center; }
.search-box { flex: 1; position: relative; }
.search-box input {
  width: 100%; padding: 10px 16px 10px 40px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 14px;
  font-family: 'DM Sans', sans-serif; outline: none; transition: .15s;
}
.search-box input:focus { border-color: var(--accent); }
.search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.filter-select {
  padding: 10px 14px; background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 13px;
  font-family: 'DM Sans', sans-serif; outline: none; cursor: pointer;
}

/* ── Table ───────────────────────────────────────────────── */
.table-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; box-shadow: 0 2px 16px var(--shadow); }
table       { width: 100%; border-collapse: collapse; }
thead       { background: var(--surface2); }
th { padding: 12px 20px; text-align: left; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; font-weight: 600; border-bottom: 1px solid var(--border); }
td { padding: 14px 20px; font-size: 14px; border-top: 1px solid var(--border); }
tr:hover td { background: rgba(181,133,58,.03); }

.t-title   { font-weight: 600; margin-bottom: 2px; }
.t-id      { font-size: 11px; color: var(--muted); font-family: monospace; }
.t-company { color: var(--blue); font-size: 13px; font-weight: 500; }
.t-value   { font-weight: 600; color: var(--accent); }
.t-date    { color: var(--muted); font-size: 13px; }
.version-tag { background: var(--surface2); padding: 2px 8px; border-radius: 4px; font-size: 11px; color: var(--muted); font-family: monospace; border: 1px solid var(--border); }

.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.act-btn  { padding: 5px 10px; border-radius: 6px; font-size: 12px; cursor: pointer; border: none; font-family: 'DM Sans', sans-serif; transition: .15s; font-weight: 500; }
.act-view { background: rgba(58,125,82,.1);  color: var(--green); }
.act-view:hover { background: rgba(58,125,82,.18); }
.act-edit { background: rgba(58,95,160,.1);  color: var(--blue); }
.act-edit:hover { background: rgba(58,95,160,.18); }
.act-del  { background: rgba(176,64,64,.08); color: var(--red); }
.act-del:hover  { background: rgba(176,64,64,.15); }
.act-compare { background: rgba(181,133,58,.1); color: var(--accent); }
.act-compare:hover { background: rgba(181,133,58,.2); }

/* ── Status badges ───────────────────────────────────────── */
.badge          { padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; white-space: nowrap; }
.badge-active   { background: rgba(58,125,82,.1);  color: var(--green);  border: 1px solid rgba(58,125,82,.2); }
.badge-expiring { background: rgba(176,125,32,.1); color: var(--yellow); border: 1px solid rgba(176,125,32,.2); }
.badge-expired  { background: rgba(176,64,64,.1);  color: var(--red);    border: 1px solid rgba(176,64,64,.2); }
.badge-manual   { font-size: 9px; margin-left: 4px; background: rgba(181,133,58,.15); color: var(--accent); padding: 1px 5px; border-radius: 3px; }

/* ── Modals ──────────────────────────────────────────────── */
.overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(30,26,20,.45); backdrop-filter: blur(4px);
  z-index: 200; align-items: center; justify-content: center;
}
.overlay.open { display: flex; }
.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 32px;
  width: 560px; max-width: 95vw; max-height: 92vh; overflow-y: auto;
  box-shadow: 0 24px 64px rgba(100,80,40,.18);
  animation: slideUp .2s ease;
}
.modal-wide   { width: 840px; }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-title  { font-family: 'DM Serif Display', serif; font-size: 22px; margin-bottom: 24px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 12px; margin-top: 24px; }

/* ── Forms ───────────────────────────────────────────────── */
.form-grid  { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1/-1; }
label { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .8px; }
input, select, textarea {
  padding: 10px 14px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 14px;
  font-family: 'DM Sans', sans-serif; outline: none; transition: .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(181,133,58,.1); }
textarea { resize: vertical; min-height: 70px; }

.field-error { border-color: var(--red) !important; box-shadow: 0 0 0 3px rgba(176,64,64,.1) !important; }
.err-msg     { font-size: 11px; color: var(--red); margin-top: 2px; display: none; }
.err-msg.show { display: block; }

.status-note  { font-size: 11px; color: var(--muted); margin-top: 2px; }
.manual-check { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); cursor: pointer; margin-top: 4px; }
.manual-check input[type=checkbox] { width: 14px; height: 14px; accent-color: var(--accent); cursor: pointer; }

/* ── Upload area ─────────────────────────────────────────── */
.upload-area {
  border: 2px dashed var(--border); border-radius: 10px; padding: 18px;
  text-align: center; color: var(--muted); font-size: 13px;
  cursor: pointer; transition: .15s; background: var(--bg);
}
.upload-area:hover { border-color: var(--accent); color: var(--accent); }
.upload-area input { display: none; }

.pdf-current-box {
  display: none; align-items: center; justify-content: space-between; gap: 10px;
  background: var(--surface2); border: 1px solid var(--border);
  border-radius: 8px; padding: 12px 14px; margin-bottom: 8px;
}
.pdf-current-box.visible { display: flex; }
.pdf-current-name { font-size: 13px; color: var(--accent); font-weight: 500; }

/* ── Contract view modal ─────────────────────────────────── */
.view-body  { display: flex; gap: 24px; }
.view-main  { flex: 1; min-width: 0; }
.view-side  { width: 220px; flex-shrink: 0; }
.detail-row {
  display: flex; justify-content: space-between; align-items: flex-start;
  padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px;
}
.detail-row:last-child { border-bottom: none; }
.detail-label { color: var(--muted); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .8px; }
.detail-value { text-align: right; font-weight: 500; max-width: 60%; }
.pdf-view-box { background: var(--surface2); border: 1px solid var(--border); border-radius: 10px; padding: 16px; text-align: center; margin-top: 16px; }
.versions-title { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px; }
.version-card { background: var(--surface2); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-bottom: 8px; font-size: 13px; }
.version-card-head { display: flex; justify-content: space-between; margin-bottom: 3px; }
.version-num  { font-weight: 700; color: var(--accent); font-family: monospace; font-size: 12px; }
.version-date { font-size: 11px; color: var(--muted); }
.version-info { font-size: 12px; color: var(--muted); }
.no-versions  { color: var(--muted); font-size: 13px; text-align: center; padding: 16px 0; }

/* ── Alerts ──────────────────────────────────────────────── */
.alert-banner {
  background: rgba(176,125,32,.08); border: 1px solid rgba(176,125,32,.2);
  border-radius: 12px; padding: 16px 20px; margin-bottom: 24px;
  color: var(--yellow); font-size: 14px;
}
.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty-icon  { font-size: 48px; margin-bottom: 12px; opacity: .3; }
.section-head { font-family: 'DM Serif Display', serif; font-size: 18px; margin-bottom: 16px; color: var(--muted); }
.section-actions { display: flex; justify-content: flex-end; margin-bottom: 16px; }

/* ── Toast notification ──────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 20px; font-size: 14px;
  z-index: 999; opacity: 0; transform: translateY(80px);
  transition: .3s; box-shadow: 0 8px 32px rgba(100,80,40,.15);
}
.toast.show    { opacity: 1; transform: translateY(0); }
.toast.success { border-left: 3px solid var(--green); }
.toast.error   { border-left: 3px solid var(--red); }

/* ════════════════════════════════════════════════════════
   Version Compare styles
   ════════════════════════════════════════════════════════ */

/* ── Field comparison table ─────────────────────────────── */
.compare-table   { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; margin-bottom: 8px; }
.compare-row     { display: grid; grid-template-columns: 160px 1fr 1fr; border-bottom: 1px solid var(--border); font-size: 13px; }
.compare-row:last-child { border-bottom: none; }
.compare-row.changed { background: rgba(176,125,32,.04); }
.compare-label   { padding: 10px 14px; font-weight: 600; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .8px; background: var(--surface2); display: flex; align-items: center; }
.compare-old     { padding: 10px 14px; border-left: 1px solid var(--border); color: var(--text); }
.compare-new     { padding: 10px 14px; border-left: 1px solid var(--border); color: var(--text); }

/* Column headers */
.compare-header  { display: grid; grid-template-columns: 160px 1fr 1fr; font-size: 11px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; padding: 8px 0; margin-bottom: 4px; }
.compare-header-label { padding-left: 14px; }
.compare-header-col   { padding-left: 14px; }

/* Diff highlights */
.diff-del        { background: rgba(176,64,64,.12); color: var(--red);   border-radius: 4px; padding: 2px 4px; }
.diff-ins        { background: rgba(58,125,82,.12);  color: var(--green); border-radius: 4px; padding: 2px 4px; }
.diff-word       { border-radius: 3px; padding: 1px 3px; margin: 0 1px; }

/* ── PDF side-by-side comparison table ──────────────────── */
.pdf-side-table   { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.pdf-side-header  { display: grid; grid-template-columns: 1fr 1fr; background: var(--surface2); border-bottom: 2px solid var(--border); }
.pdf-side-hcell   { padding: 10px 16px; font-size: 11px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.pdf-side-hcell:first-child { border-right: 1px solid var(--border); }
.pdf-side-row     { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--border); }
.pdf-side-row:first-of-type { border-top: none; }
.pdf-side-row:hover .pdf-side-cell { filter: brightness(.97); }
.pdf-side-cell    { padding: 10px 16px; font-size: 13px; font-family: 'DM Sans', sans-serif; display: flex; align-items: center; gap: 8px; min-height: 40px; }
.pdf-side-cell:first-child { border-right: 1px solid var(--border); }
.pdf-cell-del     { background: rgba(176,64,64,.08); color: var(--red); }
.pdf-cell-ins     { background: rgba(58,125,82,.08); color: var(--green); }
.pdf-change-icon  { font-size: 11px; font-weight: 700; opacity: .7; flex-shrink: 0; width: 14px; text-align: center; }

/* ════════════════════════════════════════════════════════
   RESPONSIVE — Tablet and Mobile
   Breakpoints:
     tablet : max-width 1024px
     mobile : max-width 640px
   ════════════════════════════════════════════════════════ */

/* ── Hamburger menu button (hidden on desktop) ──────────── */
.menu-btn {
  display:        none;
  background:     none;
  border:         none;
  cursor:         pointer;
  padding:        6px;
  border-radius:  8px;
  color:          var(--text);
  font-size:      22px;
  line-height:    1;
  transition:     .15s;
}
.menu-btn:hover { background: var(--surface2); }

/* Dark overlay behind sidebar on mobile */
.sidebar-overlay {
  display:    none;
  position:   fixed;
  inset:      0;
  background: rgba(30,26,20,.5);
  z-index:    99;
}
.sidebar-overlay.open { display: block; }

/* ════════════════════════════════
   TABLET  (≤ 1024px)
   ════════════════════════════════ */
@media (max-width: 1024px) {

  /* Sidebar slides off-screen, slides in when .open */
  .sidebar {
    transform:  translateX(-100%);
    transition: transform .25s ease;
    z-index:    200;
  }
  .sidebar.open { transform: translateX(0); }

  /* Main takes full width */
  .main { margin-left: 0; }

  /* Show hamburger button */
  .menu-btn { display: flex; align-items: center; justify-content: center; }

  /* Topbar has less padding */
  .topbar { padding: 12px 20px; }
  .content { padding: 20px; }

  /* Stats grid: 2 columns on tablet */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 20px; }

  /* Table: hide less important columns on tablet */
  th:nth-child(5),   /* Value */
  td:nth-child(5),
  th:nth-child(6),   /* Version */
  td:nth-child(6)  { display: none; }

  /* Modals take more screen width */
  .modal      { width: 95vw; padding: 24px; }
  .modal-wide { width: 95vw; }

  /* Compare table adjusts */
  .compare-row       { grid-template-columns: 120px 1fr 1fr; }
  .compare-header    { grid-template-columns: 120px 1fr 1fr; }

  /* PDF side table stacks on smaller screens */
  .view-body  { flex-direction: column; }
  .view-side  { width: 100%; }
}

/* ════════════════════════════════
   MOBILE  (≤ 640px)
   ════════════════════════════════ */
@media (max-width: 640px) {

  /* Topbar */
  .topbar   { padding: 10px 14px; gap: 8px; }
  .page-title { font-size: 18px; }
  .content  { padding: 14px; }

  /* Top button shorter on mobile */
  #topBtn { padding: 8px 12px; font-size: 12px; }

  /* Stats: 2 columns, smaller padding */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card  { padding: 14px 16px; }
  .stat-value { font-size: 24px; }
  .stat-icon  { font-size: 18px; margin-bottom: 6px; }

  /* Toolbar stacks search + filter */
  .toolbar        { flex-direction: column; align-items: stretch; }
  .filter-select  { width: 100%; }

  /* Table: card-style rows instead of horizontal scroll */
  .table-card { border-radius: 10px; }
  table, thead, tbody, th, td, tr { display: block; }
  thead { display: none; } /* hide header row */

  tr {
    background:    var(--surface);
    border:        1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 10px;
    padding:       14px;
  }
  tr:hover td { background: transparent; }

  td {
    border:      none;
    padding:     4px 0;
    font-size:   13px;
    display:     flex;
    align-items: flex-start;
    gap:         8px;
  }

  /* Add labels before each cell using data-label */
  td::before {
    content:     attr(data-label);
    font-size:   10px;
    font-weight: 700;
    color:       var(--muted);
    text-transform: uppercase;
    letter-spacing: .8px;
    min-width:   70px;
    flex-shrink: 0;
    padding-top: 2px;
  }

  /* Actions cell takes full row */
  td:last-child { flex-wrap: wrap; margin-top: 8px; padding-top: 10px; border-top: 1px solid var(--border); }
  td:last-child::before { display: none; }

  /* Form grid: single column */
  .form-grid { grid-template-columns: 1fr; }
  .form-group.full { grid-column: 1; }

  /* Modal full screen on mobile */
  .overlay { align-items: flex-end; }
  .modal {
    width:         100vw;
    max-width:     100vw;
    max-height:    92vh;
    border-radius: 16px 16px 0 0;
    padding:       20px 16px;
    animation:     slideUpMobile .25s ease;
  }
  .modal-wide { width: 100vw; max-width: 100vw; }
  @keyframes slideUpMobile {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
  }

  /* Compare table: stack columns */
  .compare-row    { grid-template-columns: 1fr; }
  .compare-header { display: none; }
  .compare-label  { border-radius: 0; }
  .compare-old, .compare-new { border-left: none; border-top: 1px solid var(--border); }
  .compare-old::before { content: 'Old: '; font-weight: 700; color: var(--red); font-size: 10px; }
  .compare-new::before { content: 'New: '; font-weight: 700; color: var(--green); font-size: 10px; }

  /* PDF side-by-side: stack on mobile */
  .pdf-side-header { grid-template-columns: 1fr; }
  .pdf-side-row    { grid-template-columns: 1fr; }
  .pdf-side-cell:first-child { border-right: none; border-bottom: 1px solid var(--border); }
  .pdf-side-hcell:first-child { border-right: none; border-bottom: 1px solid var(--border); }

  /* View modal body stacks */
  .view-body { flex-direction: column; gap: 16px; }
  .view-side { width: 100%; }

  /* Sidebar full width on mobile */
  .sidebar { width: 80vw; max-width: 300px; }

  /* Section head smaller */
  .section-head { font-size: 15px; }
}