/* HealthTracker – Modern design system (light, health-focused) */

:root {
  /* Primary – teal/emerald */
  --ht-primary: #0d9488;
  --ht-primary-hover: #0f766e;
  --ht-primary-light: #ccfbf1;
  --ht-primary-gradient: linear-gradient(135deg, #0d9488 0%, #059669 100%);
  /* Neutrals */
  --ht-bg: #f8fafc;
  --ht-bg-card: #ffffff;
  --ht-border: #e2e8f0;
  --ht-text: #1e293b;
  --ht-text-muted: #64748b;
  --ht-text-muted-light: #94a3b8;
  /* Semantic */
  --ht-success: #10b981;
  --ht-warning: #f59e0b;
  --ht-danger: #ef4444;
  --ht-info: #0ea5e9;
  /* Typography */
  --ht-font: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  /* Spacing & radius */
  --ht-radius: 0.75rem;
  --ht-radius-lg: 1rem;
  --ht-radius-xl: 1.25rem;
  --ht-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.06);
  --ht-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --ht-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --ht-transition: 0.2s ease;
}

/* ----- Layout & typography (unified) ----- */
body.ht-modern {
  font-family: var(--ht-font);
  background: var(--ht-bg);
  color: var(--ht-text);
}
body.ht-modern main,
body.ht-modern .container {
  font-family: var(--ht-font);
}
body.ht-modern h1, body.ht-modern h2, body.ht-modern h3,
body.ht-modern h4, body.ht-modern h5, body.ht-modern h6,
body.ht-modern .card-title, body.ht-modern .card-header {
  font-family: var(--ht-font);
}

/* ----- Navbar ----- */
.ht-modern .navbar.ht-nav,
.navbar.ht-nav {
  background: var(--ht-bg-card) !important;
  border-bottom: 1px solid var(--ht-border);
  box-shadow: var(--ht-shadow);
}
.ht-modern .navbar.ht-nav .navbar-brand,
.navbar.ht-nav .navbar-brand {
  color: var(--ht-primary) !important;
  font-weight: 700;
}
.ht-modern .navbar.ht-nav .nav-link,
.navbar.ht-nav .nav-link {
  color: var(--ht-text) !important;
  font-weight: 500;
  border-radius: var(--ht-radius);
  padding: 0.5rem 0.75rem !important;
}
.ht-modern .navbar.ht-nav .nav-link:hover,
.navbar.ht-nav .nav-link:hover {
  color: var(--ht-primary) !important;
  background: var(--ht-primary-light);
}
.ht-modern .navbar.ht-nav .nav-link.active,
.navbar.ht-nav .nav-link.active {
  color: var(--ht-primary) !important;
  background: var(--ht-primary-light);
}
.ht-modern .navbar.ht-nav .dropdown-menu,
.navbar.ht-nav .dropdown-menu {
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius);
  box-shadow: var(--ht-shadow-lg);
  padding: 0.5rem;
}
.ht-modern .navbar.ht-nav .dropdown-item,
.navbar.ht-nav .dropdown-item {
  border-radius: 0.5rem;
  padding: 0.5rem 0.75rem;
}
.ht-modern .navbar.ht-nav .navbar-toggler,
.navbar.ht-nav .navbar-toggler {
  border-color: var(--ht-border);
  color: var(--ht-text);
}
.ht-modern .navbar.ht-nav .navbar-toggler-icon,
.navbar.ht-nav .navbar-toggler-icon {
  filter: none;
}
/* Theme toggle in light nav */
.ht-modern .navbar.ht-nav .theme-toggle,
.navbar.ht-nav .theme-toggle {
  color: var(--ht-text);
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius);
  padding: 0.35rem 0.6rem;
}

/* ----- Footer ----- */
.ht-modern .ht-footer,
.ht-footer {
  background: var(--ht-bg-card) !important;
  color: var(--ht-text-muted) !important;
  border-top: 1px solid var(--ht-border);
  padding: 1.5rem 0 !important;
}
.ht-modern .ht-footer .text-gradient,
.ht-footer .text-gradient {
  color: var(--ht-primary) !important;
}
.ht-modern .ht-footer a,
.ht-footer a {
  color: var(--ht-primary);
}

/* ----- Cards (compact, modern) ----- */
.ht-card {
  background: var(--ht-bg-card);
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius-lg);
  box-shadow: var(--ht-shadow);
  transition: box-shadow var(--ht-transition), border-color var(--ht-transition);
  font-family: var(--ht-font);
}
.ht-card:hover {
  box-shadow: var(--ht-shadow-md);
}
.ht-card .card-header {
  background: transparent;
  border-bottom: 1px solid var(--ht-border);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--ht-text);
  padding: 0.75rem 1rem;
  border-radius: var(--ht-radius-lg) var(--ht-radius-lg) 0 0;
}
.ht-card .card-body {
  padding: 1rem;
}
.ht-card .card-footer {
  background: var(--ht-bg);
  border-top: 1px solid var(--ht-border);
  padding: 0.75rem 1rem;
  border-radius: 0 0 var(--ht-radius-lg) var(--ht-radius-lg);
}

/* ----- Compact page banner (small strip with page name) ----- */
.ht-page-banner {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0 0.75rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--ht-border);
  font-family: var(--ht-font);
}
.ht-page-banner-icon {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--ht-radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ht-primary-light);
  color: var(--ht-primary);
  font-size: 0.75rem;
}
.ht-page-banner-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ht-text);
  letter-spacing: -0.01em;
}
.ht-page-banner-actions {
  margin-left: auto;
}

/* Legacy page header: map to compact banner style when used as wrapper */
.ht-page-header {
  margin-bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--ht-border);
}
.ht-page-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ht-text);
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ht-font);
}
.ht-page-title-icon {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--ht-radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ht-primary-light);
  color: var(--ht-primary);
  font-size: 0.75rem;
}
.ht-page-subtitle {
  font-size: 0.8125rem;
  color: var(--ht-text-muted);
  width: 100%;
  margin-top: 0.125rem;
  margin-bottom: 0;
  font-family: var(--ht-font);
}

/* Shared empty states */
.ht-empty-state {
  padding: 2.5rem 1.5rem;
  text-align: center;
}
.ht-empty-state-icon {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  background: var(--ht-bg);
  color: var(--ht-text-muted);
  font-size: 1.4rem;
}
.ht-empty-state-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--ht-text);
}
.ht-empty-state-text {
  font-size: 0.9rem;
  color: var(--ht-text-muted);
  margin-bottom: 1rem;
}

/* Stat / metric card */
.ht-stat-card {
  background: var(--ht-bg-card);
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius-lg);
  padding: 1.25rem;
  box-shadow: var(--ht-shadow);
  transition: transform var(--ht-transition), box-shadow var(--ht-transition);
}
.ht-stat-card:hover {
  box-shadow: var(--ht-shadow-md);
  transform: translateY(-2px);
}
.ht-stat-card .ht-stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--ht-text);
  line-height: 1.2;
}
.ht-stat-card .ht-stat-label {
  font-size: 0.875rem;
  color: var(--ht-text-muted);
  margin-top: 0.25rem;
}
.ht-stat-card .ht-stat-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--ht-radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ht-primary-light);
  color: var(--ht-primary);
  font-size: 1.1rem;
}

/* ----- Buttons ----- */
.ht-btn-primary {
  background: var(--ht-primary-gradient);
  color: #fff !important;
  border: none;
  border-radius: var(--ht-radius);
  padding: 0.6rem 1.25rem;
  font-weight: 600;
  transition: opacity var(--ht-transition), transform var(--ht-transition);
}
.ht-btn-primary:hover {
  opacity: 0.95;
  color: #fff !important;
  transform: translateY(-1px);
}
.ht-btn-secondary {
  background: var(--ht-bg);
  color: var(--ht-text);
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius);
  padding: 0.6rem 1.25rem;
  font-weight: 500;
  transition: background var(--ht-transition), border-color var(--ht-transition);
}
.ht-btn-secondary:hover {
  background: var(--ht-border);
  color: var(--ht-text);
}

/* ----- Forms ----- */
.ht-modern .form-control,
.ht-modern .form-select {
  border-radius: var(--ht-radius);
  border: 1px solid var(--ht-border);
  padding: 0.5rem 0.75rem;
}
.ht-modern .form-control:focus,
.ht-modern .form-select:focus {
  border-color: var(--ht-primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}
.ht-modern .form-label {
  font-weight: 500;
  color: var(--ht-text);
}

/* ----- Hero (dashboard) ----- */
.ht-hero {
  background: var(--ht-primary-gradient);
  color: #fff;
  padding: 3rem 0;
  border-radius: var(--ht-radius-xl);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}
.ht-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(255,255,255,0.12) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 50%);
  pointer-events: none;
}
.ht-hero .ht-hero-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  position: relative;
}
.ht-hero .ht-hero-subtitle {
  opacity: 0.95;
  font-size: 1rem;
  position: relative;
}
.ht-hero .ht-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 1.5rem;
  position: relative;
}
.ht-hero .ht-hero-stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.ht-hero .ht-hero-stat-value {
  font-weight: 700;
  font-size: 1.25rem;
}
.ht-hero .ht-hero-stat-label {
  font-size: 0.875rem;
  opacity: 0.9;
}

/* ----- Badges ----- */
.ht-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.ht-badge-primary {
  background: var(--ht-primary-light);
  color: var(--ht-primary);
}
.ht-badge-success { background: #d1fae5; color: #047857; }
.ht-badge-warning { background: #fef3c7; color: #b45309; }
.ht-badge-danger { background: #fee2e2; color: #b91c1c; }

/* ----- Alerts / Banners ----- */
.ht-modern .modern-banner.banner-success {
  background: linear-gradient(90deg, #d1fae5, #a7f3d0);
  color: #065f46;
  border: 1px solid #6ee7b7;
}
.ht-modern .modern-banner.banner-error,
.ht-modern .modern-banner.banner-danger {
  background: linear-gradient(90deg, #fee2e2, #fecaca);
  color: #991b1b;
  border: 1px solid #fca5a5;
}
.ht-modern .modern-banner.banner-warning {
  background: linear-gradient(90deg, #fef3c7, #fde68a);
  color: #92400e;
  border: 1px solid #fcd34d;
}
.ht-modern .modern-banner.banner-info {
  background: linear-gradient(90deg, #e0f2fe, #bae6fd);
  color: #0369a1;
  border: 1px solid #7dd3fc;
}

/* ----- Weight reminder banner ----- */
.ht-modern .weight-reminder-banner {
  background: var(--ht-bg-card);
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius-lg);
  box-shadow: var(--ht-shadow-md);
}

/* ----- Override Bootstrap primary to match ----- */
body.ht-modern .btn-primary {
  background: var(--ht-primary-gradient);
  border: none;
  border-radius: var(--ht-radius);
  font-weight: 600;
}
body.ht-modern .btn-primary:hover {
  opacity: 0.95;
  filter: brightness(1.02);
}
body.ht-modern .text-primary {
  color: var(--ht-primary) !important;
}
body.ht-modern .bg-primary {
  background: var(--ht-primary) !important;
}

/* ----- Dashboard hero (override enhanced) ----- */
.ht-modern .hero-welcome-section {
  background: var(--ht-primary-gradient) !important;
  padding: 3rem 0 !important;
  border-radius: var(--ht-radius-xl);
  margin: 0 1rem 2rem;
  border: none;
}
.ht-modern .hero-welcome-section .hero-gradient {
  background: var(--ht-primary-gradient) !important;
  opacity: 1;
}
.ht-modern .hero-title {
  font-family: var(--ht-font);
  font-size: 2rem;
}
.ht-modern .hero-welcome-section .username-text {
  background: linear-gradient(45deg, #fff, rgba(255,255,255,0.9));
  -webkit-background-clip: text;
  background-clip: text;
}
.ht-modern .hero-stat-item {
  color: rgba(255,255,255,0.95);
}

/* ----- Dashboard stat cards (modern flat style) ----- */
.ht-modern .stats-card.enhanced-stats-card {
  background: var(--ht-bg-card) !important;
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius-lg);
  box-shadow: var(--ht-shadow);
  overflow: hidden;
}
.ht-modern .stats-card.enhanced-stats-card .stats-card-background {
  display: none;
}
.ht-modern .stats-card.enhanced-stats-card .stats-content {
  position: relative;
  z-index: 1;
}
.ht-modern .stats-card.enhanced-stats-card .stats-number {
  color: var(--ht-text);
}
.ht-modern .stats-card.enhanced-stats-card .stats-label {
  color: var(--ht-text-muted);
}
.ht-modern .stats-card.enhanced-stats-card .stats-icon {
  background: var(--ht-primary-light);
  color: var(--ht-primary);
  border-radius: var(--ht-radius);
}
.ht-modern .stats-card.enhanced-stats-card .stats-footer small {
  color: var(--ht-text-muted);
}
.ht-modern .stats-card.enhanced-stats-card.calories-card .stats-icon { background: #fef3c7; color: #b45309; }
.ht-modern .stats-card.enhanced-stats-card.bmi-card .stats-icon { background: #e0e7ff; color: #4f46e5; }
.ht-modern .stats-card.enhanced-stats-card.activities-card .stats-icon { background: #d1fae5; color: #047857; }
.ht-modern .stats-card.enhanced-stats-card.friends-card .stats-icon { background: #fce7f3; color: #be185d; }

/* ----- Quick actions (cleaner) ----- */
.ht-modern .quick-action-btn {
  background: var(--ht-bg-card) !important;
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius-lg);
  box-shadow: var(--ht-shadow);
  transition: box-shadow var(--ht-transition), border-color var(--ht-transition);
}
.ht-modern .quick-action-btn:hover {
  border-color: var(--ht-primary);
  box-shadow: var(--ht-shadow-md);
}

/* ----- Activities page: summary cards (match dashboard stat cards) ----- */
.ht-modern .summary-cards .summary-card {
  background: var(--ht-bg-card) !important;
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius-lg);
  box-shadow: var(--ht-shadow);
  color: var(--ht-text) !important;
  transition: transform var(--ht-transition), box-shadow var(--ht-transition);
}
.ht-modern .summary-cards .summary-card:hover {
  box-shadow: var(--ht-shadow-md);
  transform: translateY(-2px);
}
.ht-modern .summary-cards .summary-number {
  color: var(--ht-text);
}
.ht-modern .summary-cards .summary-label {
  color: var(--ht-text-muted);
  opacity: 1;
}
.ht-modern .summary-cards .summary-icon.text-primary { color: var(--ht-primary) !important; }
.ht-modern .summary-cards .summary-icon.text-warning { color: #b45309 !important; }
.ht-modern .summary-cards .summary-icon.text-success { color: var(--ht-success) !important; }
.ht-modern .summary-cards .summary-icon.text-info { color: var(--ht-info) !important; }

/* ----- Activities page: activity history cards ----- */
.ht-modern .activity-card {
  background: var(--ht-bg-card);
  border: 1px solid var(--ht-border);
  border-radius: var(--ht-radius-lg);
  box-shadow: var(--ht-shadow);
}
.ht-modern .activity-card-header {
  background: var(--ht-bg);
  border-bottom: 1px solid var(--ht-border);
}
.ht-modern .activity-card-body .activity-name {
  color: var(--ht-text);
}
.ht-modern .activity-card-footer {
  background: var(--ht-bg);
  border-top: 1px solid var(--ht-border);
}
.ht-modern .activity-notes {
  background: var(--ht-bg);
  border-left-color: var(--ht-primary);
}
.ht-modern .activities-title {
  color: var(--ht-text);
}
.ht-modern .section-title {
  color: var(--ht-text);
}

/* ----- Dark mode (preserve existing toggle) ----- */
[data-theme="dark"] body.ht-modern {
  --ht-bg: #0f172a;
  --ht-bg-card: #1e293b;
  --ht-border: #334155;
  --ht-text: #f1f5f9;
  --ht-text-muted: #94a3b8;
  --ht-primary-light: rgba(13, 148, 136, 0.25);
  --ht-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
  --ht-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --ht-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}
[data-theme="dark"] .navbar.ht-nav {
  background: var(--ht-bg-card) !important;
  border-bottom-color: var(--ht-border);
}
[data-theme="dark"] .navbar.ht-nav .nav-link {
  color: var(--ht-text) !important;
}
[data-theme="dark"] .ht-footer {
  background: var(--ht-bg-card) !important;
  border-top-color: var(--ht-border);
}

[data-theme="dark"] .summary-cards .summary-card {
  background: var(--ht-bg-card) !important;
  border-color: var(--ht-border);
}
[data-theme="dark"] .activity-card {
  background: var(--ht-bg-card);
  border-color: var(--ht-border);
}
[data-theme="dark"] .activity-card-header,
[data-theme="dark"] .activity-card-footer {
  background: var(--ht-bg);
  border-color: var(--ht-border);
}