/* ===== CSS VARIABLES ===== */
:root {
  --coral-400: #FF6B81;
  --coral-500: #F43F5E;
  --coral-600: #E11D48;
  --coral-50: #FFF5F6;

  --purple-50: #F4F3FF;
  --purple-100: #EBE9FE;
  --purple-200: #D9D6FE;
  --purple-400: #9E77ED;
  --purple-500: #7F56D9;
  --purple-600: #6941C6;
  --purple-700: #5925DC;

  --neutral-50: #F9FAFB;
  --neutral-100: #F2F4F7;
  --neutral-200: #EAECF0;
  --neutral-300: #D0D5DD;
  --neutral-400: #98A2B3;
  --neutral-500: #667085;
  --neutral-600: #475467;
  --neutral-700: #344054;
  --neutral-800: #1D2939;
  --neutral-900: #101828;

  --success-500: #12B76A;
  --success-50: #ECFDF3;
  --info-500: #0BA5EC;
  --info-50: #F0F9FF;
  --warning-500: #F79009;
  --warning-50: #FFFAEB;
  --error-500: #F04438;
  --error-50: #FEF3F2;

  --sidebar-bg-start: #2D1248;
  --sidebar-bg-end: #1A0A2E;
  --sidebar-active-border: #FF6B81;

  --shadow-xs: 0px 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-sm: 0px 1px 3px rgba(16, 24, 40, 0.1), 0px 1px 2px rgba(16, 24, 40, 0.06);
  --shadow-md: 0px 4px 8px -2px rgba(16, 24, 40, 0.1), 0px 2px 4px -2px rgba(16, 24, 40, 0.06);
  --shadow-lg: 0px 12px 16px -4px rgba(16, 24, 40, 0.08), 0px 4px 6px -2px rgba(16, 24, 40, 0.03);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* ===== RESET & BASE ===== */
html {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (min-width: 768px) {
  html { font-size: 15px; }
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--neutral-50);
  color: var(--neutral-900);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem rgba(127, 86, 217, 0.4);
}

/* ===== SIDEBAR ===== */
.hixel-sidebar {
  width: 260px;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--sidebar-bg-start) 0%, var(--sidebar-bg-end) 100%);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.hixel-sidebar::-webkit-scrollbar { width: 4px; }
.hixel-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 2px; }

.hixel-sidebar .sidebar-brand {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hixel-sidebar hr {
  border-color: rgba(255, 255, 255, 0.08);
  opacity: 1;
}

.hixel-sidebar .nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  font-weight: 500;
  transition: all 150ms ease;
  border-left: 3px solid transparent;
  margin-bottom: 2px;
}

.hixel-sidebar .nav-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.9);
}

.hixel-sidebar .nav-link.active {
  background: rgba(255, 107, 129, 0.12);
  color: #fff;
  border-left-color: var(--sidebar-active-border);
  font-weight: 600;
}

.hixel-sidebar .sidebar-footer {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.3);
}

/* ===== HEADER ===== */
.hixel-header {
  background: #fff;
  border-bottom: 1px solid var(--neutral-200);
  position: sticky;
  top: 0;
  z-index: 50;
}

.hixel-header .breadcrumb {
  margin-bottom: 0;
  font-size: 14px;
}

.hixel-header .breadcrumb-item a {
  color: var(--neutral-500);
  text-decoration: none;
  transition: color 150ms;
}

.hixel-header .breadcrumb-item a:hover {
  color: var(--coral-500);
}

.hixel-header .breadcrumb-item.active {
  color: var(--neutral-700);
  font-weight: 500;
}

/* ===== MAIN CONTENT ===== */
.hixel-main-content {
  background: var(--neutral-50);
  min-height: 100vh;
}

.hixel-page-content {
  padding: 24px;
}

/* ===== CARDS ===== */
.hixel-card {
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  background: #fff;
  transition: all 0.25s ease;
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}

.hixel-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.hixel-card .card-img-top {
  height: 140px;
  object-fit: cover;
  background-color: var(--neutral-100);
}

.hixel-card .card-body {
  padding: 16px 20px;
}

.hixel-card .card-title {
  font-weight: 700;
  color: var(--neutral-900);
  letter-spacing: -0.01em;
}

.hixel-card .card-text {
  color: var(--neutral-500);
}

.hixel-card .card-footer {
  border-top: 1px solid var(--neutral-100);
  padding: 12px 20px;
}

/* ===== STAT CARDS ===== */
.hixel-stat-card {
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  border-left: none;
  position: relative;
  overflow: hidden;
  transition: all 0.25s ease;
  background: #fff;
  box-shadow: var(--shadow-xs);
}

.hixel-stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.hixel-stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.hixel-stat-card .card-body {
  padding: 20px;
}

.hixel-stat-card .card-subtitle {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--neutral-500) !important;
}

.hixel-stat-card .card-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--neutral-900);
  letter-spacing: -0.03em;
  line-height: 1;
}

.hixel-stat-card.info::before {
  background: linear-gradient(90deg, #0BA5EC, #0284C7);
}

.hixel-stat-card.success::before {
  background: linear-gradient(90deg, #12B76A, #039855);
}

.hixel-stat-card.warning::before {
  background: linear-gradient(90deg, var(--purple-400), var(--purple-500));
}

/* ===== SECTION CARDS (Analytics, Lead Badge, etc.) ===== */
.card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--neutral-200);
  box-shadow: var(--shadow-xs);
}

.card-header {
  background: #fff;
  border-bottom: 1px solid var(--neutral-100);
  padding: 16px 20px;
  font-weight: 700;
}

.card-header h5 {
  font-weight: 700;
  color: var(--neutral-800);
  letter-spacing: -0.01em;
}

.card-body {
  padding: 20px;
}

/* ===== TABLES ===== */
.table {
  color: var(--neutral-700);
  font-size: 14px;
}

.table thead th {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--neutral-500);
  border-bottom-width: 1px;
  padding: 12px 16px;
}

.table tbody td {
  padding: 12px 16px;
  vertical-align: middle;
}

.table-hover tbody tr {
  cursor: pointer;
  transition: background-color 150ms;
}

.table-hover tbody tr:hover {
  background-color: var(--neutral-50) !important;
}

.table-light {
  --bs-table-bg: var(--neutral-50);
  --bs-table-border-color: var(--neutral-200);
}

/* ===== BADGES ===== */
.badge.bg-success {
  background: var(--success-50) !important;
  color: var(--success-500) !important;
  font-weight: 600;
  border: 1px solid rgba(18, 183, 106, 0.2);
}

.badge.bg-danger {
  background: var(--error-50) !important;
  color: var(--error-500) !important;
  font-weight: 600;
  border: 1px solid rgba(240, 68, 56, 0.2);
}

.badge.bg-warning {
  background: var(--warning-50) !important;
  color: var(--warning-500) !important;
  font-weight: 600;
  border: 1px solid rgba(247, 144, 9, 0.2);
}

.badge.bg-primary {
  background: var(--purple-50) !important;
  color: var(--purple-600) !important;
  font-weight: 600;
  border: 1px solid var(--purple-200);
}

.badge.bg-info {
  background: var(--info-50) !important;
  color: var(--info-500) !important;
  font-weight: 600;
  border: 1px solid rgba(11, 165, 236, 0.2);
}

.badge.bg-secondary {
  background: var(--neutral-100) !important;
  color: var(--neutral-600) !important;
  font-weight: 600;
  border: 1px solid var(--neutral-200);
}

.badge.bg-dark {
  background: var(--neutral-800) !important;
  color: #fff !important;
  font-weight: 600;
}

.badge.bg-light {
  background: var(--neutral-50) !important;
  color: var(--neutral-700) !important;
  border: 1px solid var(--neutral-200);
}

/* ===== BUTTONS ===== */
.btn-primary {
  background: linear-gradient(135deg, var(--purple-500), var(--purple-600));
  border: none;
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(127, 86, 217, 0.25);
  transition: all 150ms ease;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--purple-600), var(--purple-700));
  box-shadow: 0 4px 12px rgba(127, 86, 217, 0.35);
  transform: translateY(-1px);
}

.btn-outline-primary {
  color: var(--purple-600);
  border-color: var(--purple-200);
  font-weight: 600;
}

.btn-outline-primary:hover {
  background: var(--purple-50);
  color: var(--purple-700);
  border-color: var(--purple-300);
}

.btn-success {
  background: linear-gradient(135deg, var(--coral-400), var(--coral-500));
  border: none;
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(244, 63, 94, 0.25);
}

.btn-success:hover {
  background: linear-gradient(135deg, var(--coral-500), var(--coral-600));
  box-shadow: 0 4px 12px rgba(244, 63, 94, 0.35);
  transform: translateY(-1px);
}

.btn-outline-success {
  color: var(--coral-500);
  border-color: rgba(244, 63, 94, 0.3);
  font-weight: 600;
}

.btn-outline-success:hover {
  background: var(--coral-50);
  color: var(--coral-600);
  border-color: var(--coral-500);
}

.btn-outline-secondary {
  color: var(--neutral-600);
  border-color: var(--neutral-300);
  font-weight: 600;
}

.btn-outline-secondary:hover {
  background: var(--neutral-50);
  color: var(--neutral-700);
  border-color: var(--neutral-400);
}

/* ===== ACCORDION ===== */
.accordion-item {
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-md) !important;
  margin-bottom: 8px;
  overflow: hidden;
}

.accordion-button {
  font-weight: 600;
  color: var(--neutral-700);
  font-size: 14px;
  background: #fff;
}

.accordion-button:not(.collapsed) {
  background: var(--neutral-50);
  color: var(--neutral-900);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--neutral-200);
}

.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23667085'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

/* ===== DAY GROUPS ===== */
.hixel-day-header {
  cursor: pointer;
  user-select: none;
  transition: background-color 150ms;
}

.hixel-day-header:hover {
  background-color: var(--neutral-100) !important;
}

.hixel-chevron {
  transition: transform 0.2s ease;
}

/* ===== PARTICIPANT TABLE ===== */
.hixel-participant-table .hixel-row-toggle {
  cursor: pointer;
  transition: background-color 150ms;
}

.hixel-participant-table .hixel-row-toggle:hover {
  background-color: var(--neutral-50);
}

.hixel-row-chevron {
  transition: transform 0.2s ease;
}

.hixel-detail-row > td {
  padding: 0 !important;
}

.hixel-participant-table .table-borderless td {
  padding: 2px 8px;
}

/* ===== DETAIL EXPAND BG ===== */
.hixel-detail-row .bg-light {
  background: var(--neutral-50) !important;
}

/* ===== PAGE TITLE ===== */
h2 {
  font-weight: 700;
  color: var(--neutral-900);
  letter-spacing: -0.02em;
}

/* ===== ALERT ===== */
.alert-info {
  background: var(--info-50);
  border: 1px solid rgba(11, 165, 236, 0.2);
  color: var(--neutral-700);
  border-radius: var(--radius-lg);
}

/* ===== CODE ===== */
code {
  color: var(--purple-600);
  background: var(--purple-50);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

/* ===== CHART CARDS ===== */
.card.border {
  border: 1px solid var(--neutral-200) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-xs);
}

.card.border .card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--neutral-600);
}

/* ===== SECTION HEADER HELPERS ===== */
.fw-bold.text-muted {
  color: var(--neutral-500) !important;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* ===== LAST ACTIVITY CARD SUBTITLE ===== */
.hixel-stat-card small.text-muted {
  color: var(--neutral-400) !important;
  font-size: 12px;
}

/* ===== FORM CONTROLS ===== */
.form-control {
  border-color: var(--neutral-300);
  border-radius: var(--radius-md);
}

.form-control:focus {
  border-color: var(--purple-400);
  box-shadow: 0 0 0 3px rgba(127, 86, 217, 0.12);
}

.form-label {
  font-weight: 600;
  color: var(--neutral-700);
  font-size: 14px;
}

/* ===== TIMEZONE SELECTOR ===== */
.hixel-tz-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--neutral-200);
  background: var(--neutral-50);
  color: var(--neutral-600);
  font-size: 13px;
  transition: all 150ms ease;
  flex-shrink: 0;
}

.hixel-tz-selector:hover {
  border-color: var(--neutral-300);
  background: #fff;
}

.hixel-tz-selector svg {
  color: var(--neutral-400);
  flex-shrink: 0;
}

.hixel-tz-label {
  font-weight: 600;
  color: var(--neutral-700);
  font-size: 12px;
  white-space: nowrap;
  min-width: 42px;
}

.hixel-tz-select {
  border: none;
  background: transparent;
  color: var(--neutral-600);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  outline: none;
  font-family: inherit;
  max-width: 150px;
}

.hixel-tz-select:focus {
  outline: none;
}