/* ============================================================
   Nexa — Voice AI / Virtual Agent Platform
   Logo temelli renk paleti
   - Lacivert (primary):  #0F1F4C
   - Parlak mavi (accent): #2563EB
   - Turuncu (vurgu):      #E94B2B
   ============================================================ */

:root {
  /* Brand */
  --nx-navy:        #0F1F4C;
  --nx-navy-700:    #102A5C;
  --nx-navy-600:    #1A3A6E;
  --nx-navy-500:    #243F7E;
  --nx-blue:        #2563EB;
  --nx-blue-light:  #3B82F6;
  --nx-blue-dark:   #1D4ED8;
  --nx-accent:      #E94B2B;
  --nx-accent-light:#FF6B47;

  /* Light surfaces */
  --nx-bg:          #F4F6FB;
  --nx-surface:     #FFFFFF;
  --nx-surface-2:   #F1F5F9;
  --nx-surface-3:   #E2E8F0;
  --nx-border:      #E2E8F0;
  --nx-border-strong: #CBD5E1;

  /* Text */
  --nx-text:        #0F172A;
  --nx-text-muted:  #64748B;
  --nx-text-on-dark:#F8FAFC;

  /* States */
  --nx-success:     #10B981;
  --nx-success-bg:  #D1FAE5;
  --nx-warning:     #F59E0B;
  --nx-warning-bg:  #FEF3C7;
  --nx-danger:      #EF4444;
  --nx-danger-bg:   #FEE2E2;
  --nx-info:        #3B82F6;
  --nx-info-bg:     #DBEAFE;

  /* Layout */
  --nx-sidebar-w:   260px;
  --nx-radius:      10px;
  --nx-radius-sm:   6px;
  --nx-shadow-sm:   0 1px 2px rgba(15,31,76,.06);
  --nx-shadow:      0 4px 12px rgba(15,31,76,.08);
  --nx-shadow-lg:   0 10px 30px rgba(15,31,76,.12);
}

/* ===== Reset / Base ===== */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  color: var(--nx-text);
  background: var(--nx-bg);
  line-height: 1.5;
}
a { color: var(--nx-blue); text-decoration: none; }
a:hover { color: var(--nx-blue-dark); }
h1, h2, h3, h4 { color: var(--nx-navy); margin: 0 0 .6em; }
h1 { font-size: 22px; font-weight: 700; }
h2 { font-size: 18px; font-weight: 600; }
h3 { font-size: 16px; font-weight: 600; }

/* ===== Layout ===== */
.app-layout {
  display: grid;
  grid-template-columns: var(--nx-sidebar-w) 1fr;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  background: var(--nx-navy);
  color: var(--nx-text-on-dark);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-header {
  padding: 18px 18px 14px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.logo {
  display: flex; align-items: center; gap: 10px;
}
.logo-icon { width: 40px; height: 40px; flex-shrink: 0; }
.logo-icon img { width: 100%; height: 100%; object-fit: contain; border-radius: 8px; background: #fff; padding: 4px; }
.logo-text { font-size: 18px; font-weight: 700; letter-spacing: .3px; }
.logo-text .brand-accent { color: var(--nx-blue); }
.logo-sub { font-size: 11px; color: rgba(255,255,255,.65); letter-spacing: .5px; text-transform: uppercase; margin-top: 2px; }

.sidebar-nav { flex: 1; padding: 12px 0; }
.nav-section { padding: 8px 0; }
.nav-label {
  padding: 8px 18px;
  font-size: 10px; font-weight: 700;
  color: rgba(255,255,255,.5);
  letter-spacing: 1.2px;
  text-transform: uppercase;
}
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 18px; color: rgba(255,255,255,.85);
  border-left: 3px solid transparent;
  transition: all .15s;
}
.nav-item:hover { background: rgba(255,255,255,.05); color: #fff; }
.nav-item.active {
  background: rgba(37,99,235,.18);
  border-left-color: var(--nx-blue-light);
  color: #fff;
}
.nav-icon { font-size: 16px; width: 20px; text-align: center; opacity: .9; }
.sidebar-footer {
  padding: 14px 18px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 12px;
  color: rgba(255,255,255,.55);
}

/* ===== MAIN CONTENT ===== */
.main-content { min-width: 0; }
.topbar {
  background: var(--nx-surface);
  border-bottom: 1px solid var(--nx-border);
  padding: 12px 24px;
  display: flex; justify-content: space-between; align-items: center;
  position: sticky; top: 0; z-index: 10;
  box-shadow: var(--nx-shadow-sm);
}
.topbar-title { font-size: 16px; font-weight: 600; color: var(--nx-navy); }
.topbar-user { font-size: 13px; color: var(--nx-text-muted); display: flex; align-items: center; gap: 10px; }
.topbar-user .user-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; background: var(--nx-surface-2);
  border-radius: 999px; color: var(--nx-navy); font-weight: 600;
}

.content { padding: 24px; max-width: 1400px; margin: 0 auto; }

/* ===== Flash messages ===== */
.flash-list { margin-bottom: 16px; }
.flash {
  padding: 12px 16px;
  border-radius: var(--nx-radius-sm);
  margin-bottom: 8px;
  font-size: 13px;
  border-left: 4px solid;
  display: flex; align-items: center; gap: 10px;
}
.flash.success { background: var(--nx-success-bg); color: #065F46; border-color: var(--nx-success); }
.flash.danger  { background: var(--nx-danger-bg);  color: #991B1B; border-color: var(--nx-danger); }
.flash.warning { background: var(--nx-warning-bg); color: #92400E; border-color: var(--nx-warning); }
.flash.info    { background: var(--nx-info-bg);    color: #1E40AF; border-color: var(--nx-info); }

/* ===== Cards ===== */
.card {
  background: var(--nx-surface);
  border: 1px solid var(--nx-border);
  border-radius: var(--nx-radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--nx-shadow-sm);
}
.card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin: -18px -18px 14px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--nx-border);
  background: var(--nx-surface-2);
  border-radius: var(--nx-radius) var(--nx-radius) 0 0;
}
.card-header h2, .card-header h3 { margin: 0; }
.card-body { }

/* ===== KPI cards (dashboard) ===== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.kpi-card {
  background: var(--nx-surface);
  border: 1px solid var(--nx-border);
  border-radius: var(--nx-radius);
  padding: 18px;
  box-shadow: var(--nx-shadow-sm);
  position: relative; overflow: hidden;
}
.kpi-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--nx-navy), var(--nx-blue));
}
.kpi-card.accent::before { background: linear-gradient(90deg, var(--nx-accent), var(--nx-accent-light)); }
.kpi-label { font-size: 12px; color: var(--nx-text-muted); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 6px; font-weight: 600; }
.kpi-value { font-size: 28px; font-weight: 700; color: var(--nx-navy); }
.kpi-icon { float: right; font-size: 26px; color: var(--nx-blue); opacity: .25; }

/* ===== Tables ===== */
.table-wrap { overflow-x: auto; border-radius: var(--nx-radius); border: 1px solid var(--nx-border); background: var(--nx-surface); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  background: var(--nx-navy);
  color: #fff;
  padding: 10px 12px; text-align: left;
  font-weight: 600; font-size: 12px;
  letter-spacing: .3px; text-transform: uppercase;
  border-bottom: 1px solid var(--nx-navy-600);
}
tbody td { padding: 9px 12px; border-bottom: 1px solid var(--nx-border); }
tbody tr:hover { background: var(--nx-surface-2); }
tbody tr:last-child td { border-bottom: none; }

/* ===== Status badges ===== */
.badge {
  display: inline-block;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: .3px;
}
.badge-success { background: var(--nx-success-bg); color: #065F46; }
.badge-warning { background: var(--nx-warning-bg); color: #92400E; }
.badge-danger  { background: var(--nx-danger-bg);  color: #991B1B; }
.badge-info    { background: var(--nx-info-bg);    color: #1E40AF; }
.badge-neutral { background: var(--nx-surface-3);  color: var(--nx-text-muted); }
.badge-accent  { background: #FFE4D9; color: #9A2D10; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 16px;
  font-size: 13px; font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--nx-radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all .15s;
  background: var(--nx-surface);
  color: var(--nx-text);
}
.btn:hover { box-shadow: var(--nx-shadow-sm); }
.btn-primary { background: var(--nx-navy); color: #fff; border-color: var(--nx-navy); }
.btn-primary:hover { background: var(--nx-navy-700); color: #fff; }
.btn-accent { background: var(--nx-accent); color: #fff; border-color: var(--nx-accent); }
.btn-accent:hover { background: var(--nx-accent-light); color: #fff; }
.btn-blue { background: var(--nx-blue); color: #fff; border-color: var(--nx-blue); }
.btn-blue:hover { background: var(--nx-blue-dark); color: #fff; }
.btn-danger { background: var(--nx-danger); color: #fff; border-color: var(--nx-danger); }
.btn-success { background: var(--nx-success); color: #fff; border-color: var(--nx-success); }
.btn-outline { background: transparent; border-color: var(--nx-border-strong); color: var(--nx-text); }
.btn-outline:hover { background: var(--nx-surface-2); }
.btn-sm { padding: 5px 10px; font-size: 12px; }

.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===== Forms ===== */
.form-group { margin-bottom: 14px; }
.form-group label, .form-label {
  display: block;
  font-size: 12px; font-weight: 600;
  margin-bottom: 5px;
  color: var(--nx-text);
}
.form-group label .req, .form-label .req { color: var(--nx-danger); margin-left: 2px; }
.form-control, .form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 9px 12px;
  font-size: 13px;
  border: 1px solid var(--nx-border-strong);
  border-radius: var(--nx-radius-sm);
  background: #fff;
  font-family: inherit;
}
.form-control:focus, .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--nx-blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-help { font-size: 11px; color: var(--nx-text-muted); margin-top: 4px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }

/* ===== Filter bar ===== */
.filter-bar {
  display: flex; gap: 10px; flex-wrap: wrap; align-items: end;
  background: var(--nx-surface);
  padding: 14px;
  border: 1px solid var(--nx-border);
  border-radius: var(--nx-radius);
  margin-bottom: 14px;
}
.filter-bar .form-group { margin-bottom: 0; }

/* ===== LOGIN PAGE ===== */
.login-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0A1228 0%, #0F1F4C 40%, #1A3A6E 100%);
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.login-page::before {
  content: ''; position: absolute; top: -200px; right: -200px;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.3) 0%, transparent 70%);
}
.login-page::after {
  content: ''; position: absolute; bottom: -200px; left: -200px;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(233,75,43,.18) 0%, transparent 70%);
}
.login-card {
  background: rgba(255,255,255,.97);
  border-radius: 14px;
  padding: 36px 32px;
  width: 100%; max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
  position: relative; z-index: 1;
}
.login-logo { text-align: center; margin-bottom: 22px; }
.login-logo img { width: 120px; height: 120px; object-fit: contain; }
.login-title { text-align: center; color: var(--nx-navy); margin-bottom: 4px; font-size: 22px; }
.login-sub { text-align: center; color: var(--nx-text-muted); font-size: 12px; margin-bottom: 24px; letter-spacing: .5px; text-transform: uppercase; }

.login-card .btn-primary { width: 100%; padding: 11px; font-size: 14px; margin-top: 6px; }

/* ===== Error page ===== */
.error-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: var(--nx-bg); padding: 20px;
}
.error-card {
  background: var(--nx-surface);
  border-radius: var(--nx-radius);
  padding: 40px;
  text-align: center;
  box-shadow: var(--nx-shadow);
  max-width: 480px;
}
.error-code { font-size: 60px; font-weight: 700; color: var(--nx-accent); margin: 0; }
.error-msg { color: var(--nx-text-muted); margin: 10px 0 24px; }

/* ===== Availability matrix ===== */
.avail-matrix { font-size: 12px; }
.avail-matrix th { padding: 8px 6px; }
.avail-matrix td { padding: 8px 6px; text-align: center; }
.avail-matrix td.group-cell { text-align: left; font-weight: 600; color: var(--nx-navy); }
.avail-cell {
  display: inline-block;
  min-width: 28px;
  padding: 3px 6px;
  border-radius: 4px;
  font-weight: 600;
}
.avail-0 { background: var(--nx-danger-bg); color: #991B1B; }
.avail-low { background: var(--nx-warning-bg); color: #92400E; }
.avail-ok { background: var(--nx-success-bg); color: #065F46; }

/* ===== Transcript bubbles (call detail) ===== */
.transcript { display: flex; flex-direction: column; gap: 8px; }
.transcript-turn {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 13px;
}
.transcript-turn.user {
  background: var(--nx-surface-2);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.transcript-turn.assistant {
  background: var(--nx-blue);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.transcript-turn.system, .transcript-turn.tool {
  background: var(--nx-warning-bg);
  color: #92400E;
  align-self: center;
  font-size: 11px;
  font-family: 'Courier New', monospace;
}

/* ===== Pagination / Empty / Util ===== */
.empty { text-align: center; padding: 36px 20px; color: var(--nx-text-muted); }
.empty .icon { font-size: 40px; opacity: .3; margin-bottom: 10px; }

.muted { color: var(--nx-text-muted); }
.mono  { font-family: 'Courier New', monospace; }
.right { text-align: right; }
.center{ text-align: center; }

.page-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 18px;
}
.page-header h1 { margin: 0; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .app-layout { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
}