/* ==========================================================================
   OLIV.AI PORTFOLIO #2 - BRAND MARKETING ENGINE & CONSISTENT HOVER GLOW SYSTEM
   Designer: Sohaib Ahmer
   Features: Linear/Stripe Grade Surface Lit & Translucent Border Glow Engine
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:ital,wght@0,400;0,500;0,600;1,400&display=swap');

:root {
  /* Default Obsidian Dark Mode */
  --bg-canvas: #070A12;
  --bg-surface: #0F1523;
  --bg-surface-hover: #172033;
  --bg-card: rgba(15, 21, 35, 0.75);
  --bg-subcard: rgba(255, 255, 255, 0.025);
  --bg-subcard-hover: rgba(255, 255, 255, 0.05);
  --bg-quote: rgba(0, 0, 0, 0.35);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(94, 92, 230, 0.35);
  --border-focus: #5E5CE6;
  
  --accent-brand: #5E5CE6;
  --accent-brand-glow: rgba(94, 92, 230, 0.25);
  --accent-cyan: #0A84FF;
  --accent-cyan-glow: rgba(10, 132, 255, 0.25);
  
  --semantic-emerald: #30D158;
  --semantic-amber: #FFD60A;
  --semantic-rose: #FF453A;

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-tertiary: #64748B;
  --text-muted: #475569;

  --font-heading: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  
  --shadow-subtle: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 12px 32px rgba(94, 92, 230, 0.22);
  --shadow-glow: 0 0 40px rgba(94, 92, 230, 0.35);
  --overlay-bg: rgba(0, 0, 0, 0.82);
}

/* PRISTINE CRISP HIGH-CONTRAST LIGHT MODE */
:root[data-theme="light"] {
  --bg-canvas: #F6F8FA;
  --bg-surface: #FFFFFF;
  --bg-surface-hover: #F1F4F9;
  --bg-card: #FFFFFF;
  --bg-subcard: #F8FAFC;
  --bg-subcard-hover: #F1F5F9;
  --bg-quote: #F1F5F9;

  --border-subtle: #E2E8F0;
  --border-medium: rgba(79, 70, 229, 0.4);
  --border-focus: #5E5CE6;

  --accent-brand: #4F46E5;
  --accent-brand-glow: rgba(79, 70, 229, 0.18);
  --accent-cyan: #0284C7;
  --accent-cyan-glow: rgba(2, 132, 199, 0.18);

  --semantic-emerald: #16A34A;
  --semantic-amber: #D97706;
  --semantic-rose: #DC2626;

  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-tertiary: #64748B;
  --text-muted: #94A3B8;

  --shadow-subtle: 0 10px 25px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 12px 32px rgba(79, 70, 229, 0.16);
  --shadow-glow: 0 0 30px rgba(79, 70, 229, 0.15);
  --overlay-bg: rgba(15, 23, 42, 0.65);
}

/* BASE RESET */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* BACKGROUND LIGHTING & DYNAMIC CANVAS */
#dynamic-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
}

.ambient-bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  transition: transform 0.2s ease-out;
}

.orb-1 {
  top: -10%;
  left: 20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(94, 92, 230, 0.35) 0%, rgba(0,0,0,0) 70%);
}

.orb-2 {
  bottom: 10%;
  right: 15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(10, 132, 255, 0.25) 0%, rgba(0,0,0,0) 70%);
}

/* MINIMALIST GLASS HEADER NAVIGATION */
.minimal-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 36px;
  background: rgba(15, 21, 35, 0.75);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color 0.3s ease;
}

:root[data-theme="light"] .minimal-header {
  background: rgba(255, 255, 255, 0.85);
}

.brand-minimal {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-brand), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 15px;
  color: #FFFFFF;
  box-shadow: var(--shadow-glow);
}

.brand-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-sub {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-tertiary);
  padding-left: 8px;
  border-left: 1px solid var(--border-subtle);
}

/* HEADER NAV LINKS (ZERO WIDTH SHIFT, FLICKER-FREE SMOOTH ACTIVE INDICATOR) */
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  padding: 6px 12px;
  position: relative;
  display: inline-block;
  transition: color 0.2s ease;
}

.header-exit-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm, 6px);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.header-exit-btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
  color: var(--text-primary);
  box-shadow: 0 4px 16px var(--accent-brand-glow);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--accent-brand);
  font-weight: 500;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--accent-brand);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--accent-brand-glow);
}

/* UNIFORM BUTTON SYSTEM */
.btn-minimal-primary {
  background: linear-gradient(135deg, var(--accent-brand), #4740D8);
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 13px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  cursor: pointer;
  box-shadow: 0 4px 16px var(--accent-brand-glow);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-minimal-primary:hover {
  opacity: 0.95;
  box-shadow: 0 6px 24px var(--accent-brand-glow);
  border-color: var(--accent-brand);
}

.btn-minimal-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 13px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-minimal-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
  box-shadow: 0 4px 20px var(--accent-brand-glow);
}

/* MAIN CONTAINER FRAME */
.page-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  position: relative;
  z-index: 1;
}

section[id] {
  scroll-margin-top: 90px;
}

/* BRAND HERO SECTION */
.hero-marketing {
  text-align: center;
  padding: 60px 24px 70px;
  max-width: 920px;
  margin: 0 auto;
  position: relative;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-brand-glow);
  border: 1px solid var(--border-medium);
  color: var(--accent-brand);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

.hero-pill-badge:hover {
  box-shadow: 0 0 20px var(--accent-brand-glow);
  border-color: var(--accent-brand);
}

.hero-marketing-headline {
  font-family: var(--font-heading);
  font-size: 50px;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-gradient-text {
  background: linear-gradient(135deg, var(--accent-brand), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-marketing-description {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 720px;
  margin: 0 auto 36px;
}

/* INTERACTIVE AUDIO WAVEFORM PREVIEW CARD */
.hero-waveform-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 30px;
  max-width: 780px;
  margin: 0 auto 48px;
  position: relative;
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(16px);
  text-align: left;
  transition: all 0.25s ease;
}

.hero-waveform-card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-hover);
}

.waveform-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
}

.waveform-bars-container {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 48px;
  margin: 16px 0;
  padding: 0 8px;
}

.wave-bar {
  flex: 1;
  background: var(--border-medium);
  border-radius: 2px;
  height: 20%;
  transition: height 0.2s ease, background-color 0.2s ease;
}

.wave-bar.active {
  background: linear-gradient(to top, var(--accent-brand), var(--accent-cyan));
}

/* SPOTLIGHT CARD SHELL SYSTEM (FLAT 2D, NO 3D BEND) */
.glass-spotlight-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  box-shadow: var(--shadow-subtle);
  backdrop-filter: blur(16px);
  transform: none !important;
  transition: border-color 0.25s ease, background-color 0.3s ease, box-shadow 0.25s ease;
  overflow: hidden;
}

.glass-spotlight-card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-hover);
}

.glass-spotlight-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: radial-gradient(400px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--accent-brand), transparent 40%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.glass-spotlight-card:hover::before {
  opacity: 1;
}

/* SECTION TITLES */
.section-header-block {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 40px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-brand);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 1. FEATURE SHOWCASE TABBED MATRIX */
.feature-tabs-bar {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
}

.feature-tab-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 13.5px;
  padding: 12px 24px;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.feature-tab-btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-medium);
  color: var(--text-primary);
  box-shadow: 0 4px 16px var(--accent-brand-glow);
}

.feature-tab-btn.active {
  background: var(--accent-brand);
  color: #FFFFFF;
  border-color: var(--accent-brand);
  box-shadow: 0 4px 20px var(--accent-brand-glow);
}

.feature-pane-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

/* SUB-CARD CONTAINER */
.subcard-pane {
  background: var(--bg-subcard);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all 0.25s ease;
}

.subcard-pane:hover {
  background: var(--bg-subcard-hover);
  border-color: var(--border-medium);
  box-shadow: 0 6px 20px var(--accent-brand-glow);
}

/* 2. DYNAMIC ROI CALCULATOR */
.roi-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

.custom-range-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-surface);
  outline: none;
  cursor: pointer;
}

.custom-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-brand);
  box-shadow: 0 0 12px var(--accent-brand-glow);
  cursor: pointer;
  border: 2px solid #FFFFFF;
}

.roi-metric-callout {
  font-family: var(--font-mono);
  font-size: 42px;
  font-weight: 800;
  color: var(--semantic-emerald);
  letter-spacing: -0.02em;
  margin: 8px 0;
}

/* 3. TESTIMONIAL GRID */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-quote {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  font-style: italic;
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-brand), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  color: #FFFFFF;
}

/* 4. PRICING MATRIX & SEGMENTED BILLING PILL CONTAINER */
.pricing-switcher {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 40px;
}

.tab-segmented-bar {
  display: flex;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 4px;
  border-radius: 30px;
  gap: 4px;
}

.billing-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 12.5px;
  padding: 8px 20px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.billing-tab-btn:hover {
  color: var(--text-primary);
}

.billing-tab-btn.active {
  background: var(--accent-brand);
  color: #FFFFFF;
  font-weight: 600;
  box-shadow: 0 4px 14px var(--accent-brand-glow);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pricing-card.featured {
  border-color: var(--accent-brand);
  box-shadow: 0 10px 40px var(--accent-brand-glow);
}

.pricing-price {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 16px 0 6px;
}

.pricing-features-list {
  list-style: none;
  margin: 20px 0 28px;
  font-size: 13px;
  color: var(--text-secondary);
}

.pricing-features-list li {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ISOLATED FOOTER CARD */
.footer-glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 36px;
  margin-top: 60px;
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  transition: all 0.25s ease;
}

.footer-glass-card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-hover);
}

.footer-glass-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: radial-gradient(400px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--accent-brand), transparent 40%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.footer-glass-card:hover::before {
  opacity: 1;
}

@media (max-width: 900px) {
  .minimal-header {
    position: sticky !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100% !important;
    max-width: 100vw !important;
    padding: 10px 14px !important;
    box-sizing: border-box !important;
    margin: 0 !important;
    flex-wrap: wrap;
    gap: 8px;
  }
  .brand-sub { display: none; }
  .nav-links { display: none; }
  #theme-label { display: none; }
  .header-exit-btn span:first-child { display: none; }
  .page-container {
    width: 100% !important;
    max-width: 100vw !important;
    padding: 20px 16px 40px !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
  }
  .hero-marketing-headline { font-size: 26px; line-height: 1.25; }
  .hero-sub { font-size: 14.5px; }
  .hero-waveform-card { padding: 16px 12px; margin-bottom: 24px; }
  .waveform-bars-container { height: 32px; gap: 2px; }

  .feature-tabs-bar { flex-wrap: wrap; gap: 6px; }
  .feature-tab-btn { padding: 6px 12px; font-size: 11.5px; }

  .testimonial-grid, .pricing-grid, .feature-pane-content, .roi-card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section-title { font-size: 24px; }
  .section-subtitle { font-size: 13.5px; }

  .footer-glass-card { padding: 18px 14px; margin-top: 32px; }
}

@media (max-width: 480px) {
  .hero-marketing-headline { font-size: 22px; }
  .roi-metric-callout { font-size: 28px; }
  .pricing-price { font-size: 26px; }
}