/* Karmic Leads Design System - Layout Styles */

/* ============================================
   BASE RESETS & TYPOGRAPHY
   ============================================ */
html {
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: var(--leading-normal);
  margin: 0;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  color: var(--text-primary);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
h5 { font-size: var(--text-base); font-weight: var(--font-medium); }
h6 { font-size: var(--text-sm); font-weight: var(--font-medium); }

p {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

/* ============================================
   APP SHELL - NAVBAR
   ============================================ */
.saas-navbar {
  height: var(--navbar-height);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  box-shadow: var(--shadow-xs);
}

.saas-navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
}

.saas-navbar-brand:hover {
  color: var(--text-primary);
}

.saas-navbar-brand .brand-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: var(--font-bold);
  font-size: var(--text-sm);
}

.saas-navbar-center {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 0 var(--space-xl);
}

.saas-navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.saas-navbar-search {
  width: 320px;
  position: relative;
}

.saas-navbar-search input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-full);
  font-size: var(--text-sm);
  background: var(--bg-muted);
  transition: all var(--transition-fast);
}

.saas-navbar-search input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--bg-surface);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

.saas-navbar-search::before {
  content: "\1F50D";
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--text-sm);
  color: var(--text-muted);
  pointer-events: none;
}

/* ============================================
   APP SHELL - SIDEBAR
   ============================================ */
.saas-sidebar {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  z-index: var(--z-sidebar);
  padding: var(--space-md) 0;
  transition: transform var(--transition-base);
}

.saas-sidebar-section {
  margin-bottom: var(--space-sm);
}

.saas-sidebar-section-title {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.saas-sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem var(--space-lg);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
}

.saas-sidebar-link:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.saas-sidebar-link.active {
  color: var(--color-primary);
  background: var(--color-primary-50);
  border-left-color: var(--color-primary);
  font-weight: var(--font-medium);
}

.saas-sidebar-link .sidebar-icon {
  width: 20px;
  text-align: center;
  font-size: var(--text-base);
  flex-shrink: 0;
}

/* ============================================
   APP SHELL - MAIN CONTENT
   ============================================ */
.saas-app-wrapper {
  display: flex;
  min-height: 100vh;
  padding-top: var(--navbar-height);
}

.saas-main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: var(--space-2xl);
  max-width: var(--content-max-width);
}

/* When sidebar is hidden (public pages) */
.saas-main-content--full {
  margin-left: 0;
  max-width: 100%;
}

/* ============================================
   PAGE HEADER
   ============================================ */
.saas-page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2xl);
}

.saas-page-header h1,
.saas-page-header h2 {
  margin: 0;
}

.saas-page-header-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

.saas-page-header-actions {
  display: flex;
  gap: var(--space-sm);
}

/* ============================================
   BREADCRUMB
   ============================================ */
.saas-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.saas-breadcrumb a {
  color: var(--text-secondary);
}

.saas-breadcrumb a:hover {
  color: var(--color-primary);
}

.saas-breadcrumb-separator {
  color: var(--color-slate-300);
}

.saas-breadcrumb-current {
  color: var(--text-primary);
  font-weight: var(--font-medium);
}

/* ============================================
   FOOTER
   ============================================ */
.saas-footer {
  background: var(--color-slate-900);
  color: var(--color-slate-400);
  padding: var(--space-3xl) 0;
}

.saas-footer a {
  color: var(--color-slate-300);
}

.saas-footer a:hover {
  color: white;
}

.saas-footer-bottom {
  border-top: 1px solid var(--color-slate-700);
  padding-top: var(--space-xl);
  margin-top: var(--space-2xl);
  font-size: var(--text-sm);
  color: var(--color-slate-500);
}

/* Minimal footer for app pages */
.saas-footer-minimal {
  margin-left: var(--sidebar-width);
  padding: var(--space-lg) var(--space-2xl);
  border-top: 1px solid var(--border-color);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* ============================================
   GRID HELPERS
   ============================================ */
.saas-metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.saas-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.saas-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

/* ============================================
   MOBILE SIDEBAR TOGGLE
   ============================================ */
.saas-sidebar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-primary);
  cursor: pointer;
  padding: var(--space-xs);
}

.saas-sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sidebar) - 1);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .saas-sidebar {
    transform: translateX(-100%);
  }

  .saas-sidebar.open {
    transform: translateX(0);
  }

  .saas-sidebar.open + .saas-sidebar-overlay {
    display: block;
  }

  .saas-sidebar-toggle {
    display: block;
  }

  .saas-main-content {
    margin-left: 0;
  }

  .saas-footer-minimal {
    margin-left: 0;
  }

  .saas-two-col {
    grid-template-columns: 1fr;
  }

  .saas-navbar-search {
    width: 200px;
  }
}

@media (max-width: 768px) {
  .saas-main-content {
    padding: var(--space-lg);
  }

  .saas-page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .saas-page-header-actions {
    width: 100%;
    flex-wrap: wrap;
  }

  .saas-metric-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .saas-card-grid {
    grid-template-columns: 1fr;
  }

  .saas-navbar-search {
    display: none;
  }

  .saas-navbar-center {
    display: none;
  }

  .metric-card .metric-value {
    font-size: var(--text-2xl);
  }

  /* Table horizontal scroll on mobile */
  .saas-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .saas-table {
    min-width: 600px;
  }

  /* Period selector scrollable */
  .saas-period-selector {
    overflow-x: auto;
    flex-wrap: nowrap;
  }

  /* Breadcrumbs wrap */
  .saas-breadcrumb {
    flex-wrap: wrap;
  }

  /* Touch targets */
  .btn-saas {
    min-height: 44px;
    min-width: 44px;
  }

  .saas-sidebar-link {
    min-height: 44px;
  }

  /* Landing hero responsive */
  .landing-section--lg {
    padding: var(--space-3xl) 0;
  }
}

@media (max-width: 480px) {
  .saas-metric-grid {
    grid-template-columns: 1fr;
  }

  .saas-stepper {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .saas-stepper-step:not(:last-child)::after {
    display: none;
  }
}

/* ============================================
   LANDING PAGE LAYOUT
   ============================================ */
.landing-wrapper {
  padding-top: var(--navbar-height);
}

.landing-section {
  padding: var(--space-3xl) 0;
}

.landing-section--lg {
  padding: 5rem 0;
}

.landing-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ============================================
   UTILITIES
   ============================================ */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}