/* ==========================================================================
   LLMTrack — Minimalist Monochrome Design System
   Plain CSS (no build tool) layered over Bootstrap 5.
   Pure black/white palette, serif typography, zero radius, hairline rules.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,500;0,600;0,700;0,800;1,500;1,600&family=Source+Serif+4:ital,wght@0,400;0,500;0,600;1,400&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --background: #FFFFFF;
  --foreground: #000000;
  --muted: #F5F5F5;
  --muted-foreground: #525252;
  --accent: #000000;
  --accent-foreground: #FFFFFF;
  --border: #000000;
  --border-light: #E5E5E5;
  --card: #FFFFFF;
  --card-foreground: #000000;
  --ring: #000000;

  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-mono: "JetBrains Mono", monospace;

  --hairline: 1px solid var(--border-light);
  --thin: 1px solid var(--border);
  --medium: 2px solid var(--border);
  --thick: 4px solid var(--border);
  --ultra: 8px solid var(--border);

  --radius: 0px;
}

/* ---------------------------------------------------------------------- */
/* Base                                                                    */
/* ---------------------------------------------------------------------- */
* { border-radius: 0 !important; box-shadow: none !important; }

html, body {
  background: var(--background);
  color: var(--foreground);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.625;
  -webkit-font-smoothing: antialiased;
}

body {
  position: relative;
}

/* Global paper-grain texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0;
}

.ds-eyebrow, .label-mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}

a { color: var(--foreground); text-decoration: none; }
a.ds-link { border-bottom: var(--thin); padding-bottom: 1px; transition: none; }
a.ds-link:hover { border-bottom-width: 2px; }

hr, .ds-rule { border: none; border-top: var(--thick); margin: 3rem 0; }
.ds-rule-ultra { border-top: var(--ultra); }
.ds-rule-thin { border-top: var(--hairline); }

::selection { background: var(--foreground); color: var(--background); }

/* Focus states — required, visible, keyboard-only */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--foreground);
  outline-offset: 3px;
}
input:focus, textarea:focus, select:focus { outline: none; }

/* ---------------------------------------------------------------------- */
/* Type scale utilities                                                    */
/* ---------------------------------------------------------------------- */
.ds-display-1 { font-size: clamp(3rem, 8vw, 8rem); font-weight: 800; letter-spacing: -0.05em; line-height: 0.95; }
.ds-display-2 { font-size: clamp(2.25rem, 6vw, 5.5rem); font-weight: 700; letter-spacing: -0.04em; line-height: 1; }
.ds-h1 { font-size: clamp(2rem, 4vw, 3.5rem); font-weight: 700; }
.ds-h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 700; }
.ds-h3 { font-size: 1.5rem; font-weight: 600; }
.ds-lead { font-size: 1.25rem; font-style: italic; color: var(--muted-foreground); font-family: var(--font-body); }

/* ---------------------------------------------------------------------- */
/* Layout                                                                   */
/* ---------------------------------------------------------------------- */
.ds-container { max-width: 1152px; margin: 0 auto; padding: 0 1.5rem; }
@media (min-width: 768px) { .ds-container { padding: 0 2rem; } }
@media (min-width: 1024px) { .ds-container { padding: 0 3rem; } }

.ds-app-shell { display: flex; min-height: 100vh; }
.ds-sidebar {
  width: 260px; flex-shrink: 0; background: var(--background);
  border-right: var(--thin); display: flex; flex-direction: column;
}
.ds-main { flex: 1; min-width: 0; background: var(--background); }
.ds-topbar {
  border-bottom: var(--thick); padding: 1.25rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
}
.ds-content { padding: 2.5rem 2rem; }

@media (max-width: 900px) {
  .ds-app-shell { flex-direction: column; }
  .ds-sidebar { width: 100%; border-right: none; border-bottom: var(--thick); }
}

/* ---------------------------------------------------------------------- */
/* Sidebar navigation                                                       */
/* ---------------------------------------------------------------------- */
.ds-brand {
  font-family: var(--font-display); font-weight: 800; font-size: 1.5rem;
  letter-spacing: -0.03em; padding: 1.75rem 1.75rem 1.25rem; border-bottom: var(--hairline);
}
.ds-brand small { display: block; font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.15em; color: var(--muted-foreground); font-weight: 500; margin-top: 2px; }

.ds-nav { padding: 1rem 0; flex: 1; overflow-y: auto; }
.ds-nav-section { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted-foreground); padding: 1.25rem 1.75rem 0.5rem; }
.ds-nav-link {
  display: flex; align-items: center; gap: 0.75rem; padding: 0.65rem 1.75rem;
  font-family: var(--font-body); font-size: 0.95rem; color: var(--foreground);
  border-left: 3px solid transparent; transition: background-color 100ms, border-color 100ms;
}
.ds-nav-link:hover { background: var(--muted); }
.ds-nav-link.active { border-left-color: var(--foreground); font-weight: 600; background: var(--muted); }
.ds-nav-link svg { flex-shrink: 0; }

/* ---------------------------------------------------------------------- */
/* Buttons                                                                   */
/* ---------------------------------------------------------------------- */
.btn { border-radius: 0; transition: background-color 100ms, color 100ms, border-color 100ms; }

.ds-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase;
  font-weight: 500; padding: 0.9rem 2rem; border: var(--medium); cursor: pointer;
  transition: background-color 100ms linear, color 100ms linear;
}
.ds-btn-primary { background: var(--foreground); color: var(--accent-foreground); border-color: var(--foreground); }
.ds-btn-primary:hover { background: var(--background); color: var(--foreground); }
.ds-btn-outline { background: transparent; color: var(--foreground); border-color: var(--foreground); }
.ds-btn-outline:hover { background: var(--foreground); color: var(--background); }
.ds-btn-ghost { background: transparent; color: var(--foreground); border: none; padding: 0.5rem 0; text-decoration: underline; text-underline-offset: 4px; }
.ds-btn-sm { padding: 0.5rem 1.1rem; font-size: 0.7rem; }
.ds-btn-danger { background: var(--background); color: var(--foreground); border-color: var(--foreground); }
.ds-btn-danger:hover { background: #000; color: #fff; }
.ds-btn:disabled { opacity: 0.35; cursor: not-allowed; }

/* ---------------------------------------------------------------------- */
/* Cards                                                                     */
/* ---------------------------------------------------------------------- */
.ds-card { background: var(--card); border: var(--thin); padding: 1.75rem; }
.ds-card-tight { padding: 1.25rem; }
.ds-card-inverted { background: var(--foreground); color: var(--background); border: none; }
.ds-card-borderless { border: none; padding: 0; }

.ds-stat-card { border: var(--thin); padding: 1.75rem; position: relative; }
.ds-stat-card .ds-stat-value { font-family: var(--font-display); font-size: 2.75rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1; }
.ds-stat-card .ds-stat-label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted-foreground); margin-top: 0.6rem; }
.ds-stat-card .ds-stat-delta { font-family: var(--font-mono); font-size: 0.75rem; margin-top: 0.5rem; }

/* ---------------------------------------------------------------------- */
/* Forms                                                                     */
/* ---------------------------------------------------------------------- */
.ds-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--foreground); margin-bottom: 0.5rem; display: block; }

.form-control, .form-select, textarea.ds-input {
  border-radius: 0; border: var(--medium); background: var(--background); color: var(--foreground);
  font-family: var(--font-body); padding: 0.7rem 0.9rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--foreground); box-shadow: none; border-width: 3px; padding: calc(0.7rem - 1px) calc(0.9rem - 1px);
}
.form-control::placeholder { color: var(--muted-foreground); font-style: italic; }

.form-check-input { border-radius: 0; border: var(--medium); }
.form-check-input:checked { background-color: var(--foreground); border-color: var(--foreground); }

/* ---------------------------------------------------------------------- */
/* Tables                                                                    */
/* ---------------------------------------------------------------------- */
.ds-table { width: 100%; border-collapse: collapse; }
.ds-table thead th {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted-foreground); text-align: left; padding: 0.85rem 1rem; border-bottom: var(--thick);
}
.ds-table tbody td { padding: 0.95rem 1rem; border-bottom: var(--hairline); font-size: 0.925rem; }
.ds-table tbody tr:hover { background: var(--muted); }

/* dataTables integration keeps our table classes but needs a little override */
table.dataTable { border-collapse: collapse !important; }
.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
  border-radius: 0; border: var(--medium); font-family: var(--font-body);
}
.dataTables_wrapper .dataTables_paginate .paginate_button {
  border-radius: 0 !important; font-family: var(--font-mono); font-size: 0.8rem;
}
.dataTables_wrapper .dataTables_paginate .paginate_button.current {
  background: var(--foreground) !important; color: var(--background) !important; border-color: var(--foreground) !important;
}

/* ---------------------------------------------------------------------- */
/* Badges / status pills                                                    */
/* ---------------------------------------------------------------------- */
.ds-badge {
  display: inline-flex; align-items: center; gap: 0.35rem; font-family: var(--font-mono);
  font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.3rem 0.65rem;
  border: var(--thin);
}
.ds-badge-solid { background: var(--foreground); color: var(--background); border-color: var(--foreground); }
.ds-badge-muted { color: var(--muted-foreground); border-color: var(--border-light); }

/* ---------------------------------------------------------------------- */
/* Sections / textures                                                      */
/* ---------------------------------------------------------------------- */
.ds-section { padding: 4rem 0; border-bottom: var(--thick); }
.ds-section-inverted {
  background: var(--foreground); color: var(--background); position: relative; overflow: hidden;
}
.ds-section-inverted::before {
  content: ""; position: absolute; inset: 0; opacity: 0.03; pointer-events: none;
  background-image: repeating-linear-gradient(90deg, transparent, transparent 1px, #fff 1px, #fff 2px);
  background-size: 4px 100%;
}
.ds-section-inverted .ds-stat-card { border-color: rgba(255,255,255,0.25); }
.ds-section-inverted .ds-stat-card .ds-stat-label { color: rgba(255,255,255,0.6); }

/* ---------------------------------------------------------------------- */
/* Auth screens                                                              */
/* ---------------------------------------------------------------------- */
.ds-auth-wrap { min-height: 100vh; display: grid; grid-template-columns: 1fr; }
@media (min-width: 900px) { .ds-auth-wrap { grid-template-columns: 1fr 1fr; } }
.ds-auth-panel { display: flex; align-items: center; justify-content: center; padding: 3rem 1.5rem; }
.ds-auth-showcase {
  background: var(--foreground); color: var(--background); display: none;
  flex-direction: column; justify-content: center; padding: 4rem; position: relative; overflow: hidden;
}
@media (min-width: 900px) { .ds-auth-showcase { display: flex; } }
.ds-auth-showcase::before {
  content: ""; position: absolute; inset: 0; opacity: 0.04;
  background-image: repeating-linear-gradient(45deg, transparent, transparent 40px, #fff 40px, #fff 42px);
}
.ds-auth-card { width: 100%; max-width: 420px; }

/* ---------------------------------------------------------------------- */
/* Misc components                                                          */
/* ---------------------------------------------------------------------- */
.ds-square-mark { width: 10px; height: 10px; background: var(--foreground); display: inline-block; }
.ds-pull-quote { font-family: var(--font-display); font-style: italic; font-size: 1.75rem; line-height: 1.3; border-top: var(--thick); padding-top: 1.5rem; }

.ds-empty-state { text-align: center; padding: 4rem 2rem; border: var(--hairline); }
.ds-empty-state .ds-eyebrow { margin-bottom: 0.75rem; }

.ds-progress { height: 4px; background: var(--border-light); position: relative; }
.ds-progress-bar { height: 100%; background: var(--foreground); transition: width 200ms linear; }

.ds-drop-cap:first-letter {
  font-family: var(--font-display); float: left; font-size: 3.5rem; line-height: 0.85;
  padding: 0.1rem 0.5rem 0 0; font-weight: 700; border: var(--thin); margin-right: 0.4rem;
}

/* Modal (SweetAlert2 gets a monochrome skin) */
.swal2-popup { border-radius: 0 !important; font-family: var(--font-body) !important; border: var(--thin); }
.swal2-title { font-family: var(--font-display) !important; }
.swal2-confirm { border-radius: 0 !important; background: var(--foreground) !important; font-family: var(--font-mono) !important; letter-spacing: 0.05em; text-transform: uppercase; font-size: 0.8rem !important; box-shadow: none !important; }
.swal2-cancel { border-radius: 0 !important; background: transparent !important; color: var(--foreground) !important; border: var(--thin) !important; font-family: var(--font-mono) !important; text-transform: uppercase; font-size: 0.8rem !important; box-shadow: none !important; }

/* Scrollbar (webkit) kept minimal/sharp */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--background); }
::-webkit-scrollbar-thumb { background: var(--border-light); }
::-webkit-scrollbar-thumb:hover { background: var(--foreground); }

/* Utility */
.ds-mono { font-family: var(--font-mono); }
.ds-muted { color: var(--muted-foreground); }
.ds-invert-hover { transition: background-color 100ms linear, color 100ms linear; }
.ds-invert-hover:hover { background: var(--foreground); color: var(--background); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* ---------------------------------------------------------------------- */

/* ---------------------------------------------------------------------- */
/* Desktop Shell & Sidebar (Screen > 900px)                              */
/* ---------------------------------------------------------------------- */
@media (min-width: 901px) {
  .ds-app-shell {
    display: flex !important;
    flex-direction: row !important;
    min-height: 100vh !important;
    width: 100% !important;
  }
  .ds-sidebar {
    width: 260px !important;
    min-width: 260px !important;
    flex-shrink: 0 !important;
    background: var(--background) !important;
    border-right: 1px solid var(--border-light) !important;
    display: flex !important;
    flex-direction: column !important;
    position: static !important;
    transform: none !important;
    box-shadow: none !important;
    height: auto !important;
    min-height: 100vh !important;
    left: auto !important;
    z-index: 10 !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  .ds-main {
    flex: 1 !important;
    min-width: 0 !important;
    background: var(--background) !important;
  }
  .drawer-backdrop, .btn-close-drawer, #mobileSidebarBtn {
    display: none !important;
  }
}

/* ---------------------------------------------------------------------- */
/* Mobile Drawer Navigation (Screen <= 900px)                             */
/* ---------------------------------------------------------------------- */
@media (max-width: 900px) {
  .ds-app-shell {
    flex-direction: column !important;
    position: relative !important;
  }
  .ds-topbar {
    position: sticky !important;
    top: 0 !important;
    z-index: 1020 !important;
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(8px) !important;
    border-bottom: 2px solid var(--border) !important;
    padding: 0.85rem 1rem !important;
  }
  .ds-sidebar {
    position: fixed !important;
    top: 0 !important;
    left: -280px !important;
    width: 280px !important;
    height: 100vh !important;
    z-index: 2000 !important;
    background: #ffffff !important;
    border-right: 2px solid var(--border) !important;
    box-shadow: 10px 0 30px rgba(0,0,0,0.2) !important;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
    display: flex !important;
    overflow-y: auto !important;
  }
  .ds-sidebar.drawer-open {
    transform: translateX(280px) !important;
  }
  .drawer-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
    z-index: 1999;
  }
  .drawer-backdrop.active {
    display: block !important;
  }
  .ds-content {
    padding: 1.25rem 1rem !important;
  }
  .mobile-stat-grid {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.75rem !important;
  }
  .table-responsive {
    border: 1px solid var(--border-light);
    border-radius: 4px;
    -webkit-overflow-scrolling: touch;
  }
}

/* Desktop & Universal Collapsible Sidebar */
@media (min-width: 901px) {
  .ds-sidebar {
    transition: margin-left 0.25s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s !important;
  }
  .ds-sidebar.sidebar-collapsed {
    margin-left: -260px !important;
    opacity: 0 !important;
    pointer-events: none !important;
  }
  #sidebarToggleBtn {
    display: inline-flex !important;
    align-items: center;
    gap: 4px;
    font-weight: 600;
  }
}

/* ==========================================================================
   HIGH-CONTRAST DARK SIDEBAR ARCHITECTURE (LLMTRACK)
   ========================================================================== */
.ds-sidebar {
  width: 260px;
  flex-shrink: 0;
  background: #09090b !important; /* Rich Dark Obsidian */
  border-right: 1px solid #27272a !important;
  display: flex;
  flex-direction: column;
  color: #ffffff !important;
  z-index: 1050;
}

.ds-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  padding: 1.5rem 1.5rem 1.25rem;
  border-bottom: 1px solid #27272a !important;
  color: #ffffff !important;
  background: #09090b !important;
}
.ds-brand small {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: #a1a1aa !important;
  font-weight: 600;
  margin-top: 3px;
}

.ds-nav {
  padding: 1rem 0;
  flex: 1;
  overflow-y: auto;
}
.ds-nav-section {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #71717a !important;
  font-weight: 700;
  padding: 1.25rem 1.5rem 0.4rem;
}
.ds-nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  margin: 2px 12px;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: #d4d4d8 !important; /* High contrast off-white */
  border-left: none !important;
  transition: all 120ms ease;
  text-decoration: none !important;
}
.ds-nav-link:hover {
  background: #18181b !important;
  color: #ffffff !important;
}
.ds-nav-link.active {
  background: #ffffff !important;
  color: #000000 !important;
  font-weight: 700 !important;
}
.ds-nav-link.active i, .ds-nav-link.active svg {
  color: #000000 !important;
}
.ds-nav-link i, .ds-nav-link svg {
  color: #a1a1aa;
  transition: color 120ms ease;
  flex-shrink: 0;
}
.ds-nav-link:hover i, .ds-nav-link:hover svg {
  color: #ffffff;
}

.ds-sidebar-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid #27272a !important;
  background: #09090b;
}

@media (max-width: 900px) {
  .ds-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    transform: translateX(-100%);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 10px 0 30px rgba(0,0,0,0.8);
  }
  .ds-sidebar.drawer-open {
    transform: translateX(0);
  }
}