/* ==========================================================================
   GROWWISE RESEARCH - LAYOUT & RESPONSIVE GRID
   Mobile-First Editorial Architecture
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-paper-base);
  color: var(--color-ink-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Reading Progress Indicator */
.reading-progress-track {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  z-index: 1000;
}

.reading-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-ink-primary);
  transition: width 0.1s ease-out;
}

/* Top Masthead Bar: Logo on Top Left, Actions on Top Right (In line) */
.top-nav-bar {
  position: sticky;
  top: 0;
  z-index: 950;
  width: 100%;
  background: rgba(250, 249, 246, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

[data-theme="dark"] .top-nav-bar {
  background: rgba(9, 12, 16, 0.94);
  border-color: var(--color-border-subtle);
}

.top-nav-inner {
  max-width: var(--max-width-container);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-logo-wrap {
  display: flex;
  align-items: center;
}

.nav-logo-wrap .brand-logo-img {
  height: 34px;
  width: auto;
  object-fit: contain;
}

.nav-actions-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Minimalist Audio Control Bar */
.audio-player-panel {
  display: none;
  align-items: center;
  gap: 0.35rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border-medium);
  border-radius: var(--radius-full);
  padding: 0.2rem 0.5rem;
  box-shadow: var(--shadow-sm);
}

.audio-player-panel.active {
  display: inline-flex;
}

.btn-audio-ctrl {
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-ink-primary);
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-audio-ctrl:hover {
  background: var(--color-paper-subtle);
}

.btn-audio-speed {
  border-left: 1px solid var(--color-border-medium);
  padding-left: 0.5rem;
  margin-left: 0.15rem;
}

.nav-pill-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Main Container System */
.page-wrapper {
  padding-top: var(--space-4);
  padding-bottom: var(--space-20);
}

.container {
  width: 100%;
  max-width: var(--max-width-container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.container-editorial {
  width: 100%;
  max-width: var(--max-width-editorial);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.container-wide {
  width: 100%;
  max-width: var(--max-width-wide);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* Article Hero & Editorial Masthead */
.article-masthead {
  padding: var(--space-6) 0 var(--space-6);
  border-bottom: 1px solid var(--color-border-subtle);
  position: relative;
}

.brand-logo-row {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-5);
}

.brand-logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.logo-light-mode {
  display: block !important;
}

.logo-dark-mode {
  display: none !important;
}

[data-theme="dark"] .logo-light-mode {
  display: none !important;
}

[data-theme="dark"] .logo-dark-mode {
  display: block !important;
}

.masthead-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
}

.article-title {
  font-family: var(--font-editorial);
  font-size: var(--text-display);
  line-height: 1.12;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--color-ink-primary);
  margin-bottom: var(--space-4);
}

.article-deck {
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-ink-secondary);
  font-weight: 400;
  max-width: 90%;
  margin-bottom: var(--space-6);
}

.author-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: var(--space-4);
  border-top: 1px dashed var(--color-border-medium);
}

.author-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-paper-subtle);
  border: 1px solid var(--color-border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-primary);
  font-weight: 700;
  font-size: 0.8rem;
}

.author-details-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-ink-primary);
}

.author-details-role {
  font-size: 0.75rem;
  color: var(--color-ink-muted);
}

/* Executive Summary Box - Clean Editorial Callout */
.executive-summary-banner {
  margin: var(--space-8) auto;
  padding: var(--space-6);
  background: var(--color-surface);
  border-left: 3px solid var(--color-ink-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-sm);
}

.executive-summary-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

[data-theme="dark"] .executive-summary-label {
  color: var(--color-ink-muted);
}

.executive-summary-quote {
  font-family: var(--font-editorial);
  font-size: var(--text-xl);
  font-style: italic;
  line-height: 1.35;
  color: var(--color-ink-primary);
  margin-bottom: var(--space-3);
}

.executive-summary-bullets {
  list-style: none;
  display: grid;
  gap: 0.5rem;
  font-size: var(--text-sm);
  color: var(--color-ink-secondary);
}

.executive-summary-bullets li {
  position: relative;
  padding-left: 1.4rem;
}

.executive-summary-bullets li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-ink-muted);
  font-weight: 700;
}

/* KPI At-a-Glance Cards Grid (Inspired by Corelystic & Convertex) */
.kpi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: var(--space-8) 0;
}

@media (min-width: 600px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .kpi-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Editorial Story Flow */
.editorial-act {
  margin: var(--space-10) 0;
  position: relative;
}

.act-marker {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.act-heading {
  font-family: var(--font-editorial);
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--color-ink-primary);
  margin-bottom: var(--space-4);
  line-height: 1.25;
}

.act-body p {
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-ink-primary);
}

.act-body p:first-of-type::first-letter {
  font-family: var(--font-editorial);
  font-size: 3.2rem;
  float: left;
  line-height: 0.82;
  margin-right: 0.65rem;
  margin-top: 0.2rem;
  color: var(--color-ink-primary);
  font-weight: 700;
}

/* Interactive Data Lab Section */
.data-lab-section {
  margin: var(--space-12) 0;
  padding: var(--space-8) 0;
  background: var(--color-paper-subtle);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.section-header-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
  .section-header-row {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

.section-title {
  font-family: var(--font-editorial);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-ink-primary);
}

.section-subtitle {
  font-size: var(--text-sm);
  color: var(--color-ink-secondary);
}

/* Interactive CAC Margin Simulator Box */
.simulator-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: var(--space-8);
}

@media (min-width: 900px) {
  .simulator-layout {
    grid-template-columns: 1fr 1.15fr;
  }
}

/* Strategic Imperatives Action Matrix (McKinsey Style) */
.action-matrix-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: var(--space-6);
}

@media (min-width: 768px) {
  .action-matrix-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Publication Footer */
.site-footer {
  margin-top: var(--space-16);
  padding: var(--space-10) 0;
  border-top: 2px solid var(--color-border-medium);
  background: var(--color-surface);
  font-size: var(--text-sm);
  color: var(--color-ink-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}