/* ============================================
   LAYOUT — Sidebar, Header, App Shell
   ============================================ */

/* -------- APP ROOT -------- */

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
}

#app {
  min-height: 100vh;
}

/* -------- APP SHELL (dashboard layout) -------- */

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* -------- SIDEBAR -------- */

.sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  z-index: var(--z-sticky);
  transition: transform 0.3s ease;
}

.sidebar-logo {
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}
.sidebar-logo-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-glow);
  flex-shrink: 0;
}
.sidebar-logo-text {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}
.sidebar-logo-sub {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-4) var(--space-3);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: var(--space-4) var(--space-3) var(--space-2);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  position: relative;
  user-select: none;
}
.nav-item:hover {
  background: rgba(255,255,255,0.04);
  color: var(--text-primary);
}
.nav-item.active {
  background: rgba(124,58,237,0.12);
  color: var(--accent-violet-light);
  border: 1px solid rgba(124,58,237,0.15);
}
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -3px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 60%;
  background: var(--gradient-primary);
  border-radius: 0 2px 2px 0;
}
.nav-item-icon {
  width: 20px; height: 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.nav-item-badge {
  margin-left: auto;
  background: var(--gradient-primary);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--radius-full);
}

.nav-item-special {
  background: rgba(124,58,237,0.08);
  border: 1px solid rgba(124,58,237,0.15);
}
.nav-item-special:hover {
  background: rgba(124,58,237,0.15);
  border-color: rgba(124,58,237,0.3);
}

/* Sidebar bottom */
.sidebar-bottom {
  padding: var(--space-4) var(--space-3);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.user-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-base);
}
.user-card:hover { background: rgba(255,255,255,0.04); }
.user-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm);
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}
.user-name { font-size: var(--text-sm); font-weight: 600; color: var(--text-primary); }
.user-plan { font-size: 11px; color: var(--text-muted); }

/* Usage bar */
.usage-card {
  padding: var(--space-3);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.usage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
}
.usage-label { font-size: var(--text-xs); color: var(--text-secondary); font-weight: 500; }
.usage-count { font-size: var(--text-xs); color: var(--text-muted); }


/* -------- MAIN CONTENT -------- */

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

/* -------- HEADER -------- */

.app-header {
  height: var(--header-height);
  background: rgba(9,9,15,0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.header-title { font-size: var(--text-lg); font-weight: 700; }
.header-sub { font-size: var(--text-sm); color: var(--text-muted); }

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-base);
  font-size: 1rem;
}
.header-btn:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border-accent);
}

/* -------- PAGE CONTENT -------- */

.page-content {
  padding: var(--space-6) var(--space-8);
  flex: 1;
  max-width: var(--content-max);
  width: 100%;
}

.page-header {
  margin-bottom: var(--space-8);
}
.page-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.page-desc { color: var(--text-secondary); font-size: var(--text-sm); }


/* -------- MODULE LAYOUT (2-column) -------- */

.module-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: var(--space-6);
  align-items: start;
  min-height: calc(100vh - var(--header-height) - var(--space-12));
}

.module-controls {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: sticky;
  top: calc(var(--header-height) + var(--space-6));
  max-height: calc(100vh - var(--header-height) - var(--space-12));
  overflow-y: auto;
  /* Custom scrollbar — visible so users know panel is scrollable */
  scrollbar-width: thin;
  scrollbar-color: rgba(124,58,237,0.35) transparent;
}
.module-controls::-webkit-scrollbar { width: 4px; }
.module-controls::-webkit-scrollbar-track { background: transparent; }
.module-controls::-webkit-scrollbar-thumb {
  background: rgba(124,58,237,0.35);
  border-radius: 99px;
}
.module-controls::-webkit-scrollbar-thumb:hover {
  background: rgba(124,58,237,0.65);
}

.module-output {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}


/* -------- SECTION HEADING -------- */

.section-heading {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}
.section-heading-icon {
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.section-heading h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
}

/* -------- OUTPUT GRID -------- */

.output-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.output-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.output-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }


/* -------- EMPTY STATE -------- */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16);
  text-align: center;
  gap: var(--space-4);
}
.empty-state-icon {
  font-size: 3rem;
  opacity: 0.3;
  animation: float 4s ease-in-out infinite;
}
.empty-state-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-secondary);
}
.empty-state-sub { font-size: var(--text-sm); color: var(--text-muted); }


/* -------- LANDING PAGE -------- */

.landing-page {
  background: var(--bg-base);
  min-height: 100vh;
}

.landing-nav {
  position: fixed;
  top: 0;
  left: 0; right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(9,9,15,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.landing-nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.landing-nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.landing-nav-links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}
.landing-nav-links a:hover { color: var(--text-primary); }
.landing-nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Hero Section */
.hero {
  padding: calc(var(--space-24) + 60px) var(--space-8) var(--space-20);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 400px;
  background: radial-gradient(ellipse, rgba(124,58,237,0.2) 0%, transparent 70%);
  pointer-events: none;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 16px;
  background: rgba(124,58,237,0.1);
  border: 1px solid rgba(124,58,237,0.25);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-violet-light);
  margin-bottom: var(--space-6);
  animation: fadeInDown 0.6s ease both;
}
.hero-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.7s ease 0.1s both;
}
.hero-sub {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto var(--space-10);
  animation: fadeInUp 0.7s ease 0.2s both;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  animation: fadeInUp 0.7s ease 0.3s both;
}

/* Section container */
.section {
  padding: var(--space-20) var(--space-8);
  max-width: 1200px;
  margin: 0 auto;
}
.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-violet-light);
  margin-bottom: var(--space-3);
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}
.section-sub {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  max-width: 560px;
  margin-bottom: var(--space-12);
}

/* Before/After slider */
.before-after-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  user-select: none;
  cursor: ew-resize;
}
.ba-after, .ba-before {
  position: absolute;
  top: 0; bottom: 0;
  width: 100%;
  overflow: hidden;
}
.ba-before { z-index: 1; }
.ba-after { z-index: 2; clip-path: inset(0 0 0 50%); }
.ba-divider {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 2px;
  background: white;
  z-index: 3;
  transform: translateX(-50%);
}
.ba-handle {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 44px; height: 44px;
  background: white;
  border-radius: 50%;
  z-index: 4;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  color: #111;
  font-size: 1rem;
  font-weight: 700;
}

/* Pricing cards */
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  transition: var(--transition-base);
  position: relative;
}
.pricing-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}
.pricing-card.featured {
  border-color: var(--accent-violet);
  background: rgba(124,58,237,0.06);
}
.pricing-card.featured .pricing-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: white;
  font-size: var(--text-xs);
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.pricing-name { font-size: var(--text-xl); font-weight: 700; }
.pricing-price {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
}
.pricing-amount { font-size: var(--text-5xl); font-weight: 900; color: var(--text-primary); }
.pricing-period { font-size: var(--text-sm); color: var(--text-muted); margin-bottom: 8px; }
.pricing-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}
.pricing-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}
.pricing-feature-icon { color: var(--success); font-size: 0.85rem; }
.pricing-feature-icon.na { color: var(--text-muted); }


/* -------- MOBILE RESPONSIVE -------- */

.menu-toggle {
  display: none;
  width: 36px; height: 36px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition-base);
}
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: calc(var(--z-sticky) - 1);
}

@media (max-width: 1024px) {
  .module-layout { grid-template-columns: 1fr; }
  .module-controls { position: static; max-height: none; }
}

@media (max-width: 768px) {
  :root { --sidebar-width: 260px; }

  .sidebar {
    transform: translateX(-100%);
    z-index: var(--z-modal);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-xl);
  }
  .sidebar-overlay.visible { display: block; }

  .main-content { margin-left: 0; }
  .menu-toggle { display: flex; }

  .page-content { padding: var(--space-4); }
  .app-header { padding: 0 var(--space-4); }

  .output-grid { grid-template-columns: repeat(2, 1fr); }
  .output-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }

  .hero { padding-top: calc(var(--space-16) + 60px); }
  .hero-title { font-size: 2.2rem; }
  .landing-nav-links { display: none; }

  .section { padding: var(--space-12) var(--space-4); }

  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .output-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn-xl { padding: 14px 28px; font-size: var(--text-base); }
}