/* ==========================================================================
   Parlark Landing Page Styles
   Brand: Navy #14213D, Green #2BB673
   Dark Mode: Background #0B1220, Accent #34D399, Text #F8FAFC
   ========================================================================== */

/* Design Tokens & Theme Variables */
:root {
  --color-navy: #14213D;
  --color-green: #2BB673;
  --color-green-hover: #22995e;
  --color-accent: #2BB673;
  --color-accent-hover: #22995e;

  /* Light Mode Palette */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F1F5F9;
  --color-text: #14213D;
  --color-text-muted: #4B5B76;
  --color-text-subtle: #6B7C96;
  --color-border: #E2E8F0;
  --color-border-subtle: #EDF2F7;
  --color-card-bg: #FFFFFF;
  --color-card-border: #E2E8F0;

  /* Chart Colors */
  --color-chart-grid: #E2E8F0;
  --color-chart-benchmark: #64748B;
  --color-chart-portfolio: #2BB673;
  --color-chart-text: #64748B;
  --color-chart-callout-bg: #14213D;
  --color-chart-callout-text: #FFFFFF;

  /* Shadows & Radius */
  --shadow-sm: 0 1px 3px rgba(20, 33, 61, 0.06);
  --shadow-md: 0 6px 18px rgba(20, 33, 61, 0.08);
  --shadow-lg: 0 16px 36px rgba(20, 33, 61, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --line-height-base: 1.6;

  /* Layout */
  --container-max: 1160px;
  --header-height: 72px;

  color-scheme: light dark;
}

/* Dark Mode Overrides (supports both prefers-color-scheme and data-theme="dark") */
@media (prefers-color-scheme: dark) {
  :root {
    --color-accent: #34D399;
    --color-accent-hover: #2BB673;

    --color-bg: #0B1220;
    --color-bg-alt: #0F172A;
    --color-surface: #131E32;
    --color-surface-hover: #192742;
    --color-text: #F8FAFC;
    --color-text-muted: #94A3B8;
    --color-text-subtle: #64748B;
    --color-border: #1E293B;
    --color-border-subtle: #1E293B;
    --color-card-bg: #131E32;
    --color-card-border: #1F2D44;

    /* Chart Colors */
    --color-chart-grid: #1E293B;
    --color-chart-benchmark: #94A3B8;
    --color-chart-portfolio: #34D399;
    --color-chart-text: #94A3B8;
    --color-chart-callout-bg: #34D399;
    --color-chart-callout-text: #0B1220;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.6);
  }
}

:root[data-theme="dark"] {
  --brand-mark: url("mark-dark.svg");
}
:root[data-theme="dark"] .brand-mark-img {
  content: url("mark-dark.svg");
  --color-accent: #34D399;
  --color-accent-hover: #2BB673;

  --color-bg: #0B1220;
  --color-bg-alt: #0F172A;
  --color-surface: #131E32;
  --color-surface-hover: #192742;
  --color-text: #F8FAFC;
  --color-text-muted: #94A3B8;
  --color-text-subtle: #64748B;
  --color-border: #1E293B;
  --color-border-subtle: #1E293B;
  --color-card-bg: #131E32;
  --color-card-border: #1F2D44;

  /* Chart Colors */
  --color-chart-grid: #1E293B;
  --color-chart-benchmark: #94A3B8;
  --color-chart-portfolio: #34D399;
  --color-chart-text: #94A3B8;
  --color-chart-callout-bg: #34D399;
  --color-chart-callout-text: #0B1220;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.6);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: var(--line-height-base);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Accessibility: Skip Link & Focus */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-accent);
  color: #0B1220;
  padding: 0.5rem 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  z-index: 1000;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 1rem;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography Helpers */
h1, h2, h3, h4 {
  color: var(--color-text);
  line-height: 1.25;
  font-weight: 700;
}

p {
  color: var(--color-text-muted);
}

.text-center {
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.35rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.2s ease-in-out;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 0.9rem 1.75rem;
  font-size: 1.05rem;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #0B1220;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(43, 182, 115, 0.25);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-text-muted);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.beta-badge {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: rgba(43, 182, 115, 0.08);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
  display: inline-block;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-subtle);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background-color: rgba(11, 18, 32, 0.88);
  }
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text);
}

.brand-mark {
  display: flex;
  align-items: center;
  line-height: 0;
}

.brand-mark-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  display: block;
}

.brand-name {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--color-accent);
}

/* Hero Section */
.hero-section {
  padding: 4.5rem 0 5rem;
  background: radial-gradient(circle at 50% 0%, rgba(43, 182, 115, 0.05) 0%, transparent 60%);
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3.5rem;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-title {
  font-size: clamp(2.25rem, 4.5vw, 3.25rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
}

.hero-disclaimer {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
  margin-top: 0.25rem;
}

/* Hero Chart Card */
.hero-chart-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
}

.chart-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.chart-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.chart-label {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
}

.chart-example-pill {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  font-weight: 500;
}

.chart-kpi {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.kpi-label {
  font-size: 0.75rem;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.kpi-value.positive {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-accent);
}

.chart-canvas-wrap {
  width: 100%;
}

.hero-chart-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* SVG Chart Elements */
.chart-grid-line {
  stroke: var(--color-chart-grid);
  stroke-width: 1;
  stroke-dasharray: 4 4;
}

.chart-axis-label {
  fill: var(--color-chart-text);
  font-size: 11px;
  font-family: var(--font-sans);
}

.chart-area-portfolio {
  fill: url(#portfolioGradient);
}

.chart-line-benchmark {
  fill: none;
  stroke: var(--color-chart-benchmark);
  stroke-width: 2.25;
  stroke-dasharray: 6 4;
}

.chart-line-portfolio {
  fill: none;
  stroke: var(--color-chart-portfolio);
  stroke-width: 3.5;
  stroke-linecap: round;
}

.chart-dot-benchmark {
  fill: var(--color-chart-benchmark);
}

.chart-dot-portfolio {
  fill: var(--color-chart-portfolio);
  stroke: var(--color-surface);
  stroke-width: 2;
}

.chart-callout-bg {
  fill: var(--color-chart-callout-bg);
}

.chart-callout-text {
  fill: var(--color-chart-callout-text);
  font-size: 11.5px;
  font-weight: 700;
  font-family: var(--font-sans);
}

.chart-legend {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.8125rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
}

.legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  display: inline-block;
}

.swatch-portfolio {
  background-color: var(--color-chart-portfolio);
}

.swatch-benchmark {
  background-color: var(--color-chart-benchmark);
}

/* Sections General */
.section {
  padding: 5rem 0;
}

.section-intro {
  max-width: 680px;
  margin: 0 auto 3.5rem;
}

.section-kicker {
  text-transform: uppercase;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  display: block;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
}

.section-lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

/* Three Steps Section */
.steps-section {
  background-color: var(--color-bg-alt);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.step-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.step-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.step-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.step-title {
  font-size: 1.35rem;
}

.step-copy {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.step-preview-ui {
  margin-top: auto;
  padding-top: 1rem;
}

.picker-mock, .mapping-mock, .result-mock {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  font-size: 0.8125rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.mock-badge {
  font-weight: 700;
  color: var(--color-text-subtle);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.mock-filename {
  font-weight: 600;
  color: var(--color-text);
}

.mock-scope {
  font-size: 0.75rem;
  color: var(--color-accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.mock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--color-text-muted);
}

.mock-row .pill {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--color-text);
}

.mock-metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mock-metric .metric-label {
  color: var(--color-text-muted);
}

.mock-metric .metric-val {
  font-weight: 700;
}

.mock-metric .metric-val.positive {
  color: var(--color-accent);
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.feature-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-icon {
  font-size: 2rem;
  line-height: 1;
  margin-bottom: 0.25rem;
}

.feature-title {
  font-size: 1.25rem;
}

.feature-copy {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* Privacy Promise Banner */
.privacy-banner {
  background: linear-gradient(135deg, rgba(43, 182, 115, 0.08) 0%, rgba(20, 33, 61, 0.04) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
}

@media (prefers-color-scheme: dark) {
  .privacy-banner {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.1) 0%, rgba(19, 30, 50, 0.6) 100%);
    border-color: #24344D;
  }
}

.privacy-header {
  max-width: 720px;
  margin-bottom: 2.5rem;
}

.privacy-kicker {
  text-transform: uppercase;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  display: block;
  margin-bottom: 0.5rem;
}

.privacy-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.privacy-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
}

.privacy-pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.pillar-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.pillar-bullet {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #0B1220;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.875rem;
  margin-top: 0.15rem;
}

.pillar-content h4 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.pillar-content p {
  font-size: 0.9375rem;
  line-height: 1.55;
}

.pillar-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background-color: rgba(43, 182, 115, 0.12);
  color: var(--color-accent);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.875rem;
}

/* CTA Section */
.cta-section {
  padding: 4rem 0 6rem;
}

.cta-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  box-shadow: var(--shadow-md);
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.cta-title {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  letter-spacing: -0.02em;
}

.cta-subtitle {
  font-size: 1.1rem;
  max-width: 600px;
  color: var(--color-text-muted);
}

.cta-action-group {
  margin-top: 0.5rem;
}

.cta-microcopy {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

/* Footer */
.site-footer {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 4.5rem 0 2.5rem;
  margin-top: auto;
}

.footer-container {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.brand-col {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-brand {
  margin-bottom: 0.25rem;
}

.footer-tagline {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.footer-disclaimer {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-text-subtle);
}

.footer-heading {
  font-size: 0.9375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

/* Scroll Reveal States */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced Motion Handling */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .chart-line-portfolio,
  .chart-line-benchmark,
  .chart-area-portfolio {
    stroke-dashoffset: 0 !important;
  }
}

/* Responsive Breakpoints */
@media (max-width: 960px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .privacy-pillars-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .container {
    padding: 0 1rem;
  }

  .site-header {
    height: auto;
    padding: 0.65rem 0;
  }

  .header-container {
    gap: 0.75rem;
  }

  .brand {
    gap: 0.5rem;
  }

  .brand-name {
    font-size: 1.25rem;
  }

  .brand-mark-img {
    width: 28px;
    height: 28px;
  }

  .header-actions .btn {
    padding: 0.35rem 0.75rem;
    font-size: 0.8125rem;
    white-space: nowrap;
  }

  .nav-links {
    display: none; /* Keep header clean on small mobile viewports */
  }

  .hero-section {
    padding: 2rem 0 3rem;
  }

  .hero-title {
    font-size: clamp(1.75rem, 6.5vw, 2.25rem);
    letter-spacing: -0.02em;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-chart-card {
    padding: 1.25rem;
  }

  .privacy-banner {
    padding: 1.75rem;
  }

  .cta-card {
    padding: 2.5rem 1.25rem;
  }

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

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta-group .btn {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .container {
    max-width: 390px !important;
    margin-left: 0 !important;
    margin-right: auto !important;
    padding: 0 1rem !important;
  }
  .badge {
    white-space: normal;
  }
}