/* ==========================================================================
   Otroway Minimalist Product Studio — Design System Tokens & Styles
   ========================================================================== */

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

:root {
  /* Brand Colors */
  --color-canvas: #0B1220;
  --color-surface-low: #0F172A;
  --color-surface-mid: #111A2E;
  --color-surface-high: #19202E;
  --color-surface-bright: #323949;
  
  --color-primary: #19D3C5;
  --color-primary-hover: #14BAAD;
  --color-primary-focus: rgba(25, 211, 197, 0.4);
  
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #8896AB;
  --color-text-muted: #526174;
  
  --color-border-hairline: #1E293B;
  --color-border-subtle: rgba(255, 255, 255, 0.08);
  --color-border-light: rgba(255, 255, 255, 0.06);

  /* Typography */
  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Expanded Spacing Scale for Premium Minimalist Whitespace */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4.5rem;   /* 72px */
  --space-4xl: 6rem;     /* 96px  - Ideal for standard section gaps */
  --space-5xl: 8rem;     /* 128px - Ideal for large breathing room */

  /* Radius */
  --radius-sm: 2px;
  --radius-base: 4px;
  --radius-lg: 8px;
  --radius-full: 9999px;

  /* Grid & Layout */
  --container-max: 1140px;
  --gutter: 1.5rem;
  --margin: 2rem;
}

/* Reset & Global */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-canvas);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  background-color: var(--color-canvas);
  color: var(--color-text-secondary);
  overflow-x: hidden;
  min-height: 100vh;
}

::selection {
  background-color: var(--color-primary);
  color: var(--color-canvas);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--margin);
  padding-right: var(--margin);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(11, 18, 32, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-hairline);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-text-primary);
}

.site-logo img,
.site-logo svg {
  height: 36px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.15s ease;
}

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

.btn-header {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 8px 16px;
  border-radius: var(--radius-base);
  background-color: transparent;
  border: 1px solid var(--color-border-hairline);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  transition: all 0.15s ease;
}

.btn-header:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-canvas);
}

/* Badges & Chips */
.badge-lab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-primary);
  color: var(--color-canvas);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-base);
  border: none;
  transition: background-color 0.15s ease;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: var(--color-canvas);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: transparent;
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border-hairline);
  transition: all 0.15s ease;
}

.btn-secondary:hover {
  background-color: var(--color-surface-low);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Base Section Spacing */
.section {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
  border-top: 1px solid var(--color-border-hairline);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  display: block;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

.section-desc {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 680px;
  margin-bottom: var(--space-xl);
}

/* Hero Section */
.hero-section {
  padding-top: clamp(4rem, 12vw, 8rem);
  padding-bottom: clamp(4rem, 12vw, 8rem);
}

.hero-content {
  max-width: 780px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.035em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
}

.hero-desc {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 620px;
  margin-bottom: var(--space-xl);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Portfolio / Pipeline Section */
.status-badge-container {
  margin-top: var(--space-2xl);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-surface-low);
  border: 1px solid var(--color-border-hairline);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Principles / Philosophy Section */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
}

.principle-col h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.principle-lead {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.principle-body {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* Company Model Section */
.company-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: var(--space-3xl);
}

.body-paragraph {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.features-subgrid {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-top: var(--space-2xl);
  border-top: 1px solid var(--color-border-hairline);
  padding-top: var(--space-xl);
}

.feature-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--space-xs);
}

.feature-title h4 {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.feature-item p {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

/* Contact CTA Section */
.contact-section {
  text-align: center;
  padding-top: var(--space-5xl);
  padding-bottom: var(--space-5xl);
}

.contact-container {
  max-width: 600px;
  margin: 0 auto;
}

.contact-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.contact-desc {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

.btn-email {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: var(--color-primary);
  color: var(--color-canvas);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-base);
  transition: background-color 0.15s ease;
}

.btn-email:hover {
  background-color: var(--color-primary-hover);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border-hairline);
  padding: var(--space-xl) 0;
  background-color: var(--color-canvas);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.footer-brand img {
  height: 24px;
  width: auto;
  display: block;
}

.footer-nav {
  display: flex;
  gap: var(--space-xl);
}

.footer-nav a {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  transition: color 0.15s ease;
}

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

.footer-copyright {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Responsive Adaptations */
@media (max-width: 868px) {
  .principles-grid,
  .company-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .section {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }

  .hero-title {
    font-size: 2.75rem;
  }

  .contact-section {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--space-md);
    align-items: flex-start;
  }
}