/* ==========================================================================
   Tarsus Media — Modern Static Stylesheet
   Color Palette: Clean Blue, Deep Navy, Crisp White
   ========================================================================== */

:root {
  /* Brand Color Tokens */
  --color-navy-950: #070d1e;
  --color-navy-900: #0b152d;
  --color-navy-800: #132347;
  --color-navy-700: #1b3263;
  --color-blue-600: #2563eb;
  --color-blue-700: #1d4ed8;
  --color-blue-500: #3b82f6;
  --color-blue-100: #dbeafe;
  --color-blue-50:  #eff6ff;

  --color-slate-900: #0f172a;
  --color-slate-800: #1e293b;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-500: #64748b;
  --color-slate-400: #94a3b8;
  --color-slate-200: #e2e8f0;
  --color-slate-100: #f1f5f9;
  --color-slate-50:  #f8fafc;
  --color-white:     #ffffff;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-display: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --container-max: 1160px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(11, 21, 45, 0.05);
  --shadow-md: 0 4px 12px -2px rgba(11, 21, 45, 0.08), 0 2px 6px -1px rgba(11, 21, 45, 0.04);
  --shadow-lg: 0 12px 30px -4px rgba(11, 21, 45, 0.1), 0 4px 12px -2px rgba(11, 21, 45, 0.05);
  --shadow-card-hover: 0 20px 40px -10px rgba(37, 99, 235, 0.14), 0 6px 16px -4px rgba(11, 21, 45, 0.06);

  /* Transitions */
  --transition-fast: 160ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 240ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-slate-800);
  background-color: var(--color-slate-50);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  color: var(--color-slate-800);
  background-color: #fafcff;
  background-image: 
    radial-gradient(at 0% 0%, rgba(219, 234, 254, 0.5) 0px, transparent 50%),
    radial-gradient(at 100% 15%, rgba(239, 246, 255, 0.8) 0px, transparent 40%),
    linear-gradient(to bottom, #ffffff 0%, #f8fafc 400px, #f4f8fe 100%);
  background-repeat: no-repeat;
}

/* Subtle Geometric Media Background Motif */
.bg-grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 640px;
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(37, 99, 235, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(37, 99, 235, 0.035) 1px, transparent 1px);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent);
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--color-blue-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-blue-700);
}

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-blue-600);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Layout & Container
   -------------------------------------------------------------------------- */
.site-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* --------------------------------------------------------------------------
   Site Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  padding-top: 1.75rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

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

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  box-shadow: 0 2px 8px rgba(15, 39, 68, 0.15);
  flex-shrink: 0;
}

.brand-text-wrapper {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-navy-950);
  line-height: 1.1;
  text-transform: uppercase;
}

.brand-subtitle {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-slate-500);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-slate-600);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-navy-900);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-navy-900);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  color: var(--color-white);
  background-color: var(--color-blue-700);
  box-shadow: 0 4px 12px rgba(29, 78, 216, 0.25);
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 5rem;
  padding-bottom: 4.5rem;
  text-align: center;
}

.hero-content {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-pill);
  background: var(--color-blue-50);
  border: 1px solid var(--color-blue-100);
  color: var(--color-blue-700);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 1.75rem;
}

.hero-badge-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-blue-600);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.hero-heading {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--color-navy-950);
  margin-bottom: 1.5rem;
}

.hero-heading .gradient-text {
  background: linear-gradient(135deg, var(--color-navy-900) 20%, var(--color-blue-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-text {
  font-size: clamp(1.125rem, 2.2vw, 1.3rem);
  line-height: 1.65;
  color: var(--color-slate-600);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.85rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-navy-900);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  color: var(--color-white);
  background-color: var(--color-blue-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.85rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-slate-700);
  background-color: var(--color-white);
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  color: var(--color-navy-900);
  border-color: var(--color-slate-300);
  background-color: var(--color-slate-50);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Principles / Core Foundation Section
   -------------------------------------------------------------------------- */
.section {
  padding-top: 4.5rem;
  padding-bottom: 4.5rem;
}

.section-alt {
  background-color: #ffffff;
  border-top: 1px solid var(--color-slate-200);
  border-bottom: 1px solid var(--color-slate-200);
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3.5rem;
}

.section-tag {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-blue-600);
  margin-bottom: 0.6rem;
  display: block;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.2vw, 2.35rem);
  font-weight: 700;
  color: var(--color-navy-950);
  letter-spacing: -0.015em;
  margin-bottom: 0.75rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-slate-600);
  line-height: 1.6;
}

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

.principle-card {
  background: #ffffff;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
}

.principle-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-blue-100);
}

.principle-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-blue-50);
  color: var(--color-blue-600);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  border: 1px solid var(--color-blue-100);
}

.principle-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy-900);
  margin-bottom: 0.75rem;
}

.principle-text {
  font-size: 0.95rem;
  color: var(--color-slate-600);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   Current Projects Section (Spotlight: Bellengale)
   -------------------------------------------------------------------------- */
.project-card {
  background: linear-gradient(135deg, #ffffff 0%, #f9fbff 100%);
  border: 1px solid #dbeafe;
  border-radius: var(--radius-xl);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  max-width: 980px;
  margin: 0 auto;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-navy-900) 0%, var(--color-blue-600) 50%, #38bdf8 100%);
}

.project-card-inner {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 3rem;
  align-items: center;
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.project-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #10b981;
}

.project-category-badge {
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: var(--color-blue-50);
  border: 1px solid var(--color-blue-100);
  color: var(--color-blue-700);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.project-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-navy-950);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.project-description {
  font-size: 1.125rem;
  color: var(--color-slate-600);
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.project-features-list {
  list-style: none;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.project-feature-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.9375rem;
  color: var(--color-slate-700);
}

.project-feature-icon {
  width: 18px;
  height: 18px;
  color: var(--color-blue-600);
  flex-shrink: 0;
}

.btn-visit {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.85rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-navy-900) 0%, var(--color-blue-700) 100%);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px rgba(19, 35, 71, 0.25);
  transition: all var(--transition-fast);
}

.btn-visit:hover {
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-blue-700) 0%, var(--color-blue-600) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

/* Card Visual Mockup / Badge Box */
.project-visual-box {
  background: #ffffff;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(219, 234, 254, 0.4) 0%, transparent 70%);
}

.visual-logo-mark {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  background: linear-gradient(135deg, #0b152d 0%, #1e3a8a 50%, #2563eb 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  box-shadow: 0 8px 24px rgba(30, 58, 138, 0.25);
}

.visual-venture-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-navy-950);
  margin-bottom: 0.35rem;
}

.visual-venture-url {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-blue-600);
  margin-bottom: 1.25rem;
}

.visual-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-pill);
  background: var(--color-slate-50);
  border: 1px solid var(--color-slate-200);
  font-size: 0.8125rem;
  color: var(--color-slate-600);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   About / Philosophy Section
   -------------------------------------------------------------------------- */
.about-box {
  background: #ffffff;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--radius-xl);
  padding: 3.5rem;
  max-width: 980px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3rem;
  align-items: center;
}

.about-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-navy-950);
  line-height: 1.25;
}

.about-lead {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--color-slate-700);
  margin-bottom: 1rem;
}

.about-sub {
  font-size: 0.975rem;
  line-height: 1.65;
  color: var(--color-slate-600);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: auto;
  background-color: var(--color-navy-950);
  color: #94a3b8;
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
  border-top: 1px solid #1e293b;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.footer-brand-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #ffffff;
  text-transform: uppercase;
}

.footer-nav {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-nav a {
  font-size: 0.9rem;
  color: #94a3b8;
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: #64748b;
  flex-wrap: wrap;
  gap: 1rem;
}

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .principles-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .project-card-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .hero-section {
    padding-top: 3.5rem;
    padding-bottom: 3rem;
  }

  .project-card, .about-box {
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 640px) {
  .header-inner {
    flex-direction: row;
    justify-content: space-between;
  }

  .nav-links {
    display: none; /* Clean minimal mobile view */
  }

  .hero-heading {
    font-size: 2.15rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary, .btn-secondary, .btn-visit {
    width: 100%;
  }

  .footer-top, .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .footer-nav {
    flex-direction: column;
    gap: 0.85rem;
  }
}

/* Reduced Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}