@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Space+Grotesk:wght@400;500&display=swap');

:root {
  /* Colors */
  --color-signal-orange: #ff682c;
  --color-sienna-bronze: #816729;
  --color-carbon: #202020;
  --color-graphite: #4d4d4d;
  --color-slate: #828282;
  --color-fog: #f5f5f5;
  --color-mist: #efefef;
  --color-chalk: #e8e8e8;
  --color-paper: #ffffff;

  /* Typography — Font Families */
  --font-polysans: 'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  --font-inter: 'Inter', ui-sans-serif, system-ui, sans-serif;

  /* Typography — Scale */
  --text-caption: 12px;
  --leading-caption: 1.5;
  --text-body: 16px;
  --leading-body: 1.38;
  --text-body-lg: 18px;
  --leading-body-lg: 1.33;
  --text-subheading: 32px;
  --leading-subheading: 1.19;
  --tracking-subheading: -0.64px;
  --text-heading: 40px;
  --leading-heading: 1.13;
  --tracking-heading: -0.8px;
  --text-display: 66px;
  --leading-display: 0.91;
  --tracking-display: -1.32px;

  /* Spacing */
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-20: 20px;
  --spacing-32: 32px;
  --spacing-36: 36px;
  --spacing-40: 40px;
  --spacing-60: 60px;
  --spacing-80: 80px;
  --spacing-140: 140px;

  /* Border Radius */
  --radius-cards: 8px;
  --radius-inputs: 8px;
  --radius-buttons: 20px;
  --radius-navpill: 200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-mist);
  color: var(--color-graphite);
  font-family: var(--font-inter);
  line-height: var(--leading-body);
  font-size: var(--text-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, .brand-font {
  font-family: var(--font-polysans);
  color: var(--color-carbon);
  font-weight: 400;
}

.text-display {
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
}

.text-heading {
  font-size: var(--text-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin-bottom: var(--spacing-40);
}

.text-subheading {
  font-size: var(--text-subheading);
  line-height: var(--leading-subheading);
  letter-spacing: var(--tracking-subheading);
}

.text-body-lg {
  font-size: var(--text-body-lg);
  line-height: var(--leading-body-lg);
}

.text-caption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  color: var(--color-slate);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-20);
}

.section {
  padding-top: var(--spacing-80);
  padding-bottom: var(--spacing-80);
}

/* Navigation Capsule */
.nav-wrapper {
  position: fixed;
  top: var(--spacing-20);
  left: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  z-index: 100;
}

.nav-capsule {
  background: var(--color-paper);
  border-radius: var(--radius-navpill);
  border: 1px solid var(--color-slate);
  padding: 0 var(--spacing-8);
  height: 56px;
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  box-shadow: 0 4px 12px rgba(32, 32, 32, 0.03);
}

.nav-capsule a {
  color: var(--color-carbon);
  text-decoration: none;
  font-family: var(--font-inter);
  font-weight: 500;
  font-size: 14px;
  padding: 0 13px;
  transition: color 0.2s;
}

.nav-capsule a:hover {
  color: var(--color-signal-orange);
}

.logo {
  font-family: var(--font-polysans);
  font-size: 24px;
  color: var(--color-carbon);
  text-decoration: none;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-16);
}

.logo-swoosh {
  color: var(--color-signal-orange);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-buttons);
  font-family: var(--font-inter);
  font-weight: 500;
  font-size: 15px;
  padding: 8px 18px;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
  height: 40px;
}

.btn-filled {
  background: var(--color-carbon);
  color: var(--color-paper);
  border: none;
}

.btn-filled:hover {
  background: #000;
  transform: translateY(-1px);
}

.btn-filled-orange {
  background: var(--color-signal-orange);
  color: var(--color-paper);
  border: none;
}

.btn-outlined {
  background: transparent;
  color: var(--color-carbon);
  border: 1px solid var(--color-carbon);
}

.btn-outlined:hover {
  background: rgba(0,0,0,0.03);
}

/* Hero Section */
.hero {
  padding-top: var(--spacing-140);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-60);
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-20);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-12);
  margin-top: var(--spacing-12);
}

/* Cards */
.card {
  background: var(--color-paper);
  border-radius: var(--radius-cards);
  padding: var(--spacing-40);
  box-shadow: 0 1px 3px rgba(32, 32, 32, 0.04), 0 4px 12px rgba(32, 32, 32, 0.03);
  transition: box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(32, 32, 32, 0.06), 0 8px 24px rgba(32, 32, 32, 0.05);
}

/* KPI Tile */
.kpi-tile {
  background: var(--color-paper);
  border-radius: var(--radius-cards);
  padding: var(--spacing-32);
  box-shadow: 0 1px 3px rgba(32, 32, 32, 0.04), 0 4px 12px rgba(32, 32, 32, 0.03);
}

.kpi-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-slate);
  margin-bottom: var(--spacing-8);
}

.kpi-value {
  font-family: var(--font-polysans);
  font-size: 40px;
  color: var(--color-carbon);
  letter-spacing: -0.8px;
}

/* Dashboard Mockup Component */
.dashboard-mockup {
  position: relative;
  width: 100%;
  height: 400px;
}

.dashboard-card-main {
  position: absolute;
  top: 0;
  right: 0;
  width: 90%;
  height: 360px;
  background: var(--color-paper);
  border-radius: var(--radius-cards);
  box-shadow: 0 4px 20px rgba(32, 32, 32, 0.06);
  padding: var(--spacing-20);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12);
}

.dashboard-card-overlap {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60%;
  height: auto;
  min-height: 200px;
  background: var(--color-paper);
  border-radius: var(--radius-cards);
  box-shadow: 0 8px 30px rgba(32, 32, 32, 0.1);
  padding: var(--spacing-20);
}

/* Abstract UI Elements */
.ui-header {
  height: 24px;
  width: 40%;
  background: var(--color-fog);
  border-radius: 4px;
}

.ui-chart-area {
  flex: 1;
  background: linear-gradient(180deg, rgba(255,104,44,0.15) 0%, rgba(255,104,44,0) 100%);
  border-top: 2px solid var(--color-signal-orange);
  margin-top: var(--spacing-20);
  border-radius: 4px 4px 0 0;
  position: relative;
}

.ui-bar {
  height: 12px;
  background: var(--color-fog);
  border-radius: 2px;
  margin-bottom: 8px;
}
.ui-bar.active {
  background: var(--color-signal-orange);
  width: 80% !important;
}

/* AI Feedback Buttons */
.feedback-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}
.feedback-btn-success {
  background: rgba(30, 142, 62, 0.1);
  color: #1e8e3e;
}
.feedback-btn-success:hover {
  background: #1e8e3e;
  color: #fff;
}
.feedback-btn-danger {
  background: rgba(217, 48, 37, 0.1);
  color: #d93025;
}
.feedback-btn-danger:hover {
  background: #d93025;
  color: #fff;
}

/* AI Input Field */
.ai-input-wrapper {
  display: flex;
  align-items: center;
  background: var(--color-mist);
  border: 1px solid var(--color-chalk);
  border-radius: 20px;
  padding: 8px 16px;
  margin-top: 16px;
}
.ai-input-wrapper input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-family: var(--font-inter);
  font-size: 13px;
  color: var(--color-carbon);
}
.ai-input-wrapper button {
  background: var(--color-signal-orange);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s;
}
.ai-input-wrapper button:hover {
  transform: scale(1.1);
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-20);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-20);
}

/* Footer */
.footer {
  border-top: 1px solid var(--color-chalk);
  padding: var(--spacing-60) 0;
  margin-top: var(--spacing-80);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
  /* Typography */
  .text-display {
    font-size: 40px;
  }
  .text-heading {
    font-size: 28px;
    margin-bottom: var(--spacing-20);
  }
  .text-subheading {
    font-size: 20px !important;
  }
  
  /* Layout */
  .section {
    padding-top: var(--spacing-40);
    padding-bottom: var(--spacing-40);
  }
  
  /* Nav */
  .nav-capsule {
    width: 95%;
    justify-content: space-between;
    padding: 0 8px;
    gap: 4px;
  }
  .nav-capsule a:not(.logo):not(.btn),
  .nav-capsule div {
    display: none !important; /* Hide middle links and separators on mobile */
  }
  .nav-capsule .logo {
    font-size: 16px;
    padding: 0 8px;
  }
  .nav-capsule .btn {
    font-size: 13px;
    padding: 6px 12px;
    height: 36px;
    margin-left: 0 !important;
  }
  
  /* Hero */
  .hero {
    grid-template-columns: 1fr;
    padding-top: 100px;
    gap: var(--spacing-40);
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
    flex-direction: column;
  }
  .dashboard-mockup {
    height: 320px;
  }
  .dashboard-card-main {
    width: 100%;
    height: 300px;
  }
  .dashboard-card-overlap {
    width: 80%;
    bottom: -20px;
  }
  
  /* Grids */
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr !important;
  }
  
  /* Physics dynamics card */
  .grid-1 .card {
    flex-direction: column;
    text-align: center;
    gap: 20px !important;
  }
  
  /* Partners */
  section[style*="gap: 60px"] div {
    gap: 20px !important;
  }
  section[style*="gap: 60px"] h3 {
    font-size: 18px !important;
  }
  
  /* Footer */
  .footer > div {
    flex-direction: column;
    gap: 40px;
  }
  .footer > div > div:last-child {
    gap: 40px !important;
  }
  
  /* Utilities */
  .desktop-only {
    display: none !important;
  }
}

/* Core Drawer Styles */
.core-drawer-tab {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: #00e5ff;
    color: #000;
    padding: 20px 10px;
    border-radius: 10px 0 0 10px;
    cursor: pointer;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    box-shadow: -4px 0 15px rgba(0,229,255,0.4);
    transition: transform 0.3s ease, background 0.3s ease;
}
.core-drawer-tab:hover {
    background: #33ebff;
    transform: translateY(-50%) translateX(-5px);
}
.core-drawer-tab .vertical-text {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-polysans, sans-serif);
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: 2px;
}
.core-drawer-tab i {
    font-size: 1.2rem;
}

.core-drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(4, 11, 23, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}
.core-drawer-overlay.open {
    opacity: 1;
    visibility: visible;
}

.core-drawer-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 450px;
    height: 100vh;
    background: #040b17;
    border-left: 1px solid rgba(0,229,255,0.3);
    z-index: 1001;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    overflow-y: auto;
    overflow-x: hidden;
}
.core-drawer-panel.open {
    transform: translateX(0);
}

.core-drawer-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255,255,255,0.1);
    border: none;
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
    z-index: 10;
}
.core-drawer-close:hover {
    background: rgba(0,229,255,0.5);
}

.core-drawer-content {
    padding: 60px 40px 40px;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    z-index: 2;
}

.core-drawer-panel::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0,229,255,0.15) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

.core-drawer-title {
    font-family: var(--font-polysans, sans-serif);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 20px;
    color: #fff;
    letter-spacing: -1px;
}
.core-gradient {
    background: linear-gradient(90deg, #00e5ff, #0088ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.core-drawer-desc {
    color: #94a3b8;
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 40px;
    font-weight: 400;
}

.core-features-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
}

.core-feature-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 16px;
    border-radius: 12px;
    transition: all 0.3s ease;
}
.core-feature-card:hover {
    background: rgba(0, 229, 255, 0.05);
    border-color: rgba(0, 229, 255, 0.2);
    transform: translateX(5px);
}
.core-feature-icon-wrapper {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(0, 229, 255, 0.1);
    color: #00e5ff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}
.core-feature-text {
    display: flex;
    flex-direction: column;
}
.core-feature-text strong {
    color: #f8fafc;
    font-size: 1.05rem;
    font-weight: 700;
}
.core-feature-text span {
    color: #64748b;
    font-size: 0.85rem;
    margin-top: 2px;
}

.core-drawer-footer {
    margin-top: auto;
}
.btn-premium-core {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    background: #00e5ff;
    color: #000000 !important;
    padding: 16px 24px;
    border-radius: 6px;
    font-weight: 800;
    font-size: 1.05rem;
    text-decoration: none;
    letter-spacing: 1px;
    border: none;
    box-shadow: 0 4px 15px rgba(0, 229, 255, 0.3);
    transition: all 0.3s ease;
    z-index: 1;
}

.btn-premium-core:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 229, 255, 0.6);
    background: #33ebff;
}

.btn-premium-core i {
    color: #000000;
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.btn-premium-core:hover i {
    transform: scale(1.1);
}