/*
 * Batray – Bid Tracking Application
 * Design System CSS
 * All colors reference design tokens (CSS variables). No hardcoded hex values in component rules.
 */

/* ===========================================================
   1. DESIGN TOKENS – Light Mode
   =========================================================== */
:root {
  --color-bg:          #F4F1ED;
  --color-surface:     #FFFFFF;
  --color-surface-alt: #FAF7F2;
  --color-border:      #E7E1DA;

  --color-text-primary:   #2A2623;
  --color-text-secondary: #6B625C;
  --color-text-muted:     #9C928A;

  --color-accent:        #5C5AAE;
  --color-accent-hover:  #4B499A;
  --color-accent-subtle: #E6E5F9;

  --status-open:        #3B82F6;
  --status-in-progress: #D4A017;
  --status-submitted:   #4C6EF5;
  --status-awarded:     #2F855A;
  --status-lost:        #B4533A;
  --status-archived:    #857A72;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  --sidebar-width:    240px;
  --header-height:    56px;
  --page-padding:     24px;
  --card-padding:     20px;
  --border-radius:    6px;
  --border-radius-lg: 8px;

  --shadow-card: 0 1px 3px rgba(42,38,35,0.06), 0 1px 2px rgba(42,38,35,0.04);

  --font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* ===========================================================
   2. DESIGN TOKENS – Dark Mode
   =========================================================== */
[data-theme="dark"] {
  --color-bg:          #1C1917;
  --color-surface:     #26221F;
  --color-surface-alt: #2E2925;
  --color-border:      #3A342F;

  --color-text-primary:   #EDE6E1;
  --color-text-secondary: #C8BEB7;
  --color-text-muted:     #A89E94;

  --color-accent:        #8A89E6;
  --color-accent-hover:  #9998EB;
  --color-accent-subtle: #3F3D6C;

  --shadow-card: none;
}

/* ===========================================================
   3. RESET & BASE
   =========================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  line-height: 1.5;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }

/* ===========================================================
   4. LAYOUT
   =========================================================== */
.app-body { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background-color: var(--color-surface-alt);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  overflow-y: auto;
  z-index: 100;
}

.sidebar__brand {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-5);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.sidebar__brand-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.sidebar__nav { padding: var(--space-3) 0; flex: 1; }
.sidebar__nav li { padding: 0 var(--space-3); margin-bottom: 2px; }

.sidebar__nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background-color 0.15s, color 0.15s;
}

.sidebar__nav-item:hover {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  text-decoration: none;
}

.sidebar__nav-item--active {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
}

.sidebar__nav-item--active:hover {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
}

.sidebar__icon { width: 18px; height: 18px; flex-shrink: 0; }

.sidebar__footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.sidebar__user-info { margin-bottom: var(--space-3); }

.sidebar__user-name {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-primary);
}

.sidebar__user-role {
  display: block;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.app-main { flex: 1; display: flex; flex-direction: column; min-height: 100vh; }
.app-main--with-sidebar { margin-left: var(--sidebar-width); }

.top-header {
  height: var(--header-height);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--page-padding);
  position: sticky;
  top: 0;
  z-index: 50;
  flex-shrink: 0;
}

.top-header__title { flex: 1; }
.top-header__actions { display: flex; align-items: center; gap: var(--space-3); }
.page-title { font-size: 20px; font-weight: 500; color: var(--color-text-primary); }
.page-content { padding: var(--page-padding); flex: 1; }

/* ===========================================================
   5. CARDS
   =========================================================== */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--card-padding);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--space-5);
}

.card__title {
  font-size: 20px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

/* ===========================================================
   6. BUTTONS
   =========================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
}

.btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.btn--primary { background-color: var(--color-accent); color: #FFFFFF; border-color: var(--color-accent); }
.btn--primary:hover { background-color: var(--color-accent-hover); border-color: var(--color-accent-hover); text-decoration: none; color: #FFFFFF; }

.btn--secondary { background-color: transparent; color: var(--color-accent); border-color: var(--color-border); }
.btn--secondary:hover { background-color: var(--color-accent-subtle); text-decoration: none; color: var(--color-accent); }

.btn--ghost { background-color: transparent; color: var(--color-text-secondary); border-color: var(--color-border); }
.btn--ghost:hover { background-color: var(--color-surface-alt); color: var(--color-text-primary); text-decoration: none; }

.btn--danger { background-color: var(--status-lost); color: #FFFFFF; border-color: var(--status-lost); }
.btn--danger:hover { background-color: #9B3E2A; text-decoration: none; color: #FFFFFF; }

.btn--sm { padding: var(--space-1) var(--space-3); font-size: 13px; }
.btn--icon { width: 28px; height: 28px; padding: 0; border-radius: var(--border-radius); }

/* ===========================================================
   7. STATUS BADGES
   =========================================================== */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 500;
  color: #FFFFFF;
  white-space: nowrap;
}

.status-drafting  { background-color: var(--status-in-progress); }
.status-submitted { background-color: var(--status-submitted); }
.status-awarded   { background-color: var(--status-awarded); }
.status-lost      { background-color: var(--status-lost); }
.status-archived  { background-color: var(--status-archived); }

/* ===========================================================
   8. TABLES
   =========================================================== */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }

.table thead tr {
  background-color: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
}

.table thead th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.table tbody tr { border-bottom: 1px solid var(--color-border); }
.table tbody tr:last-child { border-bottom: none; }
.table tbody tr:hover { background-color: var(--color-accent-subtle); }

.table tbody td {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-primary);
  vertical-align: middle;
}

.table__actions { text-align: right; white-space: nowrap; }
.table__actions .btn + .btn { margin-left: var(--space-2); }
.text-right { text-align: right; }

/* Sortable column headers */
.sort-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}
.sort-link:hover { color: var(--color-text-primary); }
.sort-link--active { color: var(--color-accent); }
.sort-link--active:hover { color: var(--color-accent); }
.sort-link--right { justify-content: flex-end; width: 100%; }
.sort-indicator { opacity: 0.7; }

/* Project row status indicators */
.project-row--awarded td:first-child { border-left: 3px solid var(--status-awarded); }
.project-row--lost    td:first-child { border-left: 3px solid var(--status-lost); }
.project-row--submitted td:first-child { border-left: 3px solid var(--status-submitted); }
.project-row--drafting  td:first-child { border-left: 3px solid var(--status-in-progress); }
.project-row--inactive  td:first-child { border-left: 3px solid var(--status-archived); }

.project-row--awarded   td:first-child .link { color: var(--status-awarded); }
.project-row--lost      td:first-child .link { color: var(--status-lost); }
.project-row--submitted td:first-child .link { color: var(--status-submitted); }
.project-row--drafting  td:first-child .link { color: var(--status-in-progress); }
.project-row--inactive  td:first-child .link { color: var(--status-archived); }

.bid-due--warning { color: var(--status-in-progress); font-weight: 500; }
.bid-due--overdue { color: var(--status-lost); font-weight: 500; }

/* ===========================================================
   9. FILTER BAR
   =========================================================== */
.filter-bar {
  display: flex;
  align-items: flex-end;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-5);
}

.filter-bar__fields {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  flex: 1;
}

.filter-bar__fields .form__field {
  min-width: 140px;
  flex: 1;
}

.filter-bar__actions {
  display: flex;
  gap: var(--space-2);
  align-items: flex-end;
  padding-bottom: 1px;
}

/* ===========================================================
   10. FORMS
   =========================================================== */
.form__section { margin-bottom: var(--space-6); }

.form__section-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.form__section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.form__row { display: flex; gap: var(--space-5); margin-bottom: var(--space-4); }
.form__row--cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); margin-bottom: var(--space-4); }
.form__row--cols-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--space-5); margin-bottom: var(--space-4); }

.form__field { display: flex; flex-direction: column; gap: var(--space-1); }
.form__field--wide { flex: 1; width: 100%; }
.form__field--center { align-items: center; }
.form__field--checkbox-group { flex-direction: row; align-items: center; gap: var(--space-2); padding-top: 24px; }

.form__label { font-size: 12px; font-weight: 500; color: var(--color-text-secondary); display: block; }

.form__input,
.form__select,
.form__textarea {
  background-color: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-family);
  font-size: 14px;
  color: var(--color-text-primary);
  width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
}

.form__input--sm, .form__select--sm { padding: var(--space-1) var(--space-2); font-size: 13px; }

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.form__select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%236B625C'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 16px;
  padding-right: var(--space-7);
}

.form__textarea { resize: vertical; min-height: 80px; }
.form__checkbox { width: 16px; height: 16px; accent-color: var(--color-accent); cursor: pointer; }

.form__checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 14px;
  color: var(--color-text-primary);
  cursor: pointer;
}

.form__errors {
  background-color: #FEF2F2;
  border: 1px solid #FECACA;
  border-radius: var(--border-radius);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  color: #991B1B;
  font-size: 14px;
}

.form__errors h3 { font-size: 14px; font-weight: 500; margin-bottom: var(--space-2); }
.form__errors ul { list-style: disc; padding-left: var(--space-5); }

.form__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-5);
}

/* ===========================================================
   10. BID SUBMISSION NESTED FORM TABLE
   =========================================================== */
.bid-submissions-table {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.bid-submissions-table__header {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 40px 40px 1fr 40px;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.bid-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 40px 40px 1fr 40px;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.bid-row:last-child { border-bottom: none; }

/* ===========================================================
   11. DASHBOARD
   =========================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.stat-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--card-padding);
  box-shadow: var(--shadow-card);
}

.stat-card__label {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.stat-card__value {
  font-size: 28px;
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

/* ===========================================================
   12. FLASH MESSAGES
   =========================================================== */
.flash {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-4);
  font-size: 14px;
}

.flash--notice { background-color: #ECFDF5; border: 1px solid #A7F3D0; color: #065F46; }
.flash--alert  { background-color: #FEF2F2; border: 1px solid #FECACA; color: #991B1B; }

/* ===========================================================
   13. MISC COMPONENTS
   =========================================================== */
.link { color: var(--color-accent); text-decoration: none; font-weight: 500; }
.link:hover { text-decoration: underline; }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 500;
  border-radius: 9999px;
  margin-left: var(--space-2);
}

.empty-state {
  text-align: center;
  padding: var(--space-7) var(--space-5);
  color: var(--color-text-muted);
  font-size: 14px;
}

.empty-state p { margin-bottom: var(--space-4); }

.meta-list { display: flex; flex-wrap: wrap; gap: var(--space-5) var(--space-7); }
.meta-item { display: flex; flex-direction: column; gap: 2px; }

.meta-item dt {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.meta-item dd { font-size: 14px; color: var(--color-text-primary); }
.project-meta { margin-bottom: var(--space-5); }

/* ===========================================================
   14. RESPONSIVE
   =========================================================== */
@media (max-width: 1024px) {
  .stats-grid  { grid-template-columns: repeat(2, 1fr); }
  .charts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .stats-grid        { grid-template-columns: 1fr 1fr; }
  .form__row--cols-3 { grid-template-columns: 1fr; }
  .form__row--cols-2 { grid-template-columns: 1fr; }
}