/* CASTOR ADVISORY - PREMIUM WEBSITE DESIGN SYSTEM */

/* Fonts are loaded in the HTML head for better performance. */

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */
:root {
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-headline: 'Playfair Display', Georgia, serif;
  
  /* Type Scale - Fluid Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.1vw, 0.8rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.2vw, 0.95rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.75rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2.25rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.5vw, 3rem);
  --text-4xl: clamp(2.25rem, 1.8rem + 2.25vw, 4rem);
  --text-5xl: clamp(3rem, 2.4rem + 3vw, 5.5rem);
  
  /* Line Heights */
  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  
  /* Letter Spacing */
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.1em;
  
  /* Color System - Refined Green + Gold */
  --green-950: #0a1f1a;
  --green-900: #0f2e26;
  --green-800: #1a4d40;
  --green-700: #2d6b5a;
  --green-600: #3a8570;
  --green-100: #ecf5f2;
  --green-50: #f5faf8;
  
  --gold-500: #c8a84e;
  --gold-400: #d4b85c;
  --gold-300: #e0c96f;
  
  --gray-900: #111827;
  --gray-800: #1f2937;
  --gray-700: #374151;
  --gray-600: #4b5563;
  --gray-500: #6b7280;
  --gray-400: #9ca3af;
  --gray-300: #d1d5db;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;
  --gray-50: #f9fafb;
  
  /* Spacing Scale */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
  --space-40: 10rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  
  /* Transitions */
  --transition-base: all 0.2s ease;
  --transition-slow: all 0.3s ease;
  --transition-bounce: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--gray-900);
  background-color: white;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

/* ==========================================================================
   Typography System
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--gray-900);
}

.headline-serif {
  font-family: var(--font-headline);
  font-weight: 500;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }

p {
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--gray-600);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   Layout Components
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-12);
  }
}

.section {
  padding: var(--space-20) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-32) 0;
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-8);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 767px) {
  .grid-cols-2,
  .grid-cols-3 {
    grid-template-columns: 1fr;
  }
}

/* Asymmetric Layouts */
.grid-asymmetric {
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
  align-items: center;
}

@media (min-width: 768px) {
  .grid-asymmetric {
    grid-template-columns: 1.5fr 1fr;
  }
  
  .grid-asymmetric-reverse {
    grid-template-columns: 1fr 1.5fr;
  }
}

/* ==========================================================================
   Background Variants
   ========================================================================== */
.bg-white { background-color: white; }
.bg-green-50 { background-color: var(--green-50); }
.bg-green-900 { background-color: var(--green-900); }
.bg-green-950 { background-color: var(--green-950); }
.bg-gray-50 { background-color: var(--gray-50); }

.text-white { color: white; }
.text-gray-600 { color: var(--gray-600); }

/* ==========================================================================
   Navigation
   ========================================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: var(--space-4) 0;
  transition: var(--transition-base);
  background-color: transparent;
}

.nav-solid {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid var(--gray-100);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--green-800);
  text-decoration: none;
  letter-spacing: var(--tracking-wider);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-logo:hover {
  color: var(--green-700);
}

.nav-star {
  width: 20px;
  height: 20px;
  fill: var(--gold-500);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  padding: var(--space-2) 0;
  transition: var(--transition-base);
}

.nav-link:hover {
  color: var(--green-800);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-300));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* Mobile Navigation */
.nav-mobile {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .nav-mobile {
    display: none;
  }
}

.hamburger {
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--gray-700);
  margin: 4px 0;
  transition: var(--transition-base);
}

.mobile-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--green-950);
  z-index: 40;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

.mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background-color: white;
  z-index: 50;
  padding: var(--space-8);
  transition: var(--transition-base);
  overflow-y: auto;
}

.mobile-menu.active {
  right: 0;
}

.mobile-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-12);
  list-style: none;
}

.mobile-link {
  color: var(--gray-900);
  text-decoration: none;
  font-size: var(--text-lg);
  font-weight: 500;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--gray-100);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, var(--green-950) 0%, var(--green-900) 50%, var(--green-800) 100%);
  color: white;
  overflow: hidden;
}

/* CSS-only geometric pattern */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(200, 168, 78, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(200, 168, 78, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.02) 0%, transparent 50%);
  background-size: 800px 800px, 600px 600px, 400px 400px;
  animation: heroPattern 20s ease-in-out infinite alternate;
}

@keyframes heroPattern {
  0% {
    background-position: 0% 0%, 100% 100%, 50% 50%;
  }
  100% {
    background-position: 100% 100%, 0% 0%, 25% 75%;
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1s ease 0.5s forwards;
}

@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  font-family: var(--font-headline);
  font-size: var(--text-5xl);
  font-weight: 500;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-6);
  color: white;
}

.hero .lead {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-8);
  max-width: 600px;
}

/* ==========================================================================
   Card System
   ========================================================================== */
.card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  transition: var(--transition-slow);
  border: 1px solid var(--gray-100);
  height: 100%;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card h3 {
  margin-bottom: var(--space-4);
  color: var(--green-800);
}

.card-feature {
  background: var(--green-50);
  border: 1px solid var(--green-100);
  position: relative;
  overflow: hidden;
}

.card-feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-300));
}

/* ==========================================================================
   Button System
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-base);
  text-decoration: none;
  transition: var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  min-height: 48px; /* Touch-friendly */
}

.btn-primary {
  background-color: var(--green-800);
  color: white;
  border-color: var(--green-800);
}

.btn-primary:hover {
  background-color: var(--green-900);
  border-color: var(--green-900);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26, 77, 64, 0.4);
}

.btn-secondary {
  background-color: transparent;
  color: var(--green-800);
  border-color: var(--green-800);
}

.btn-secondary:hover {
  background-color: var(--green-800);
  color: white;
}

.btn-white {
  background-color: white;
  color: var(--green-800);
  border-color: white;
}

.btn-white:hover {
  background-color: var(--gray-50);
}

.btn-arrow::after {
  content: '→';
  font-size: 1.2em;
  transition: var(--transition-base);
}

.btn-arrow:hover::after {
  transform: translateX(4px);
}

/* ==========================================================================
   Section Dividers
   ========================================================================== */
.section-divider {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-500), var(--gold-300), transparent);
  margin: var(--space-20) auto;
  max-width: 200px;
}

/* ==========================================================================
   Team Section
   ========================================================================== */
.team-hero {
  display: grid;
  gap: var(--space-12);
  align-items: center;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .team-hero {
    grid-template-columns: 1fr 1.2fr;
  }
}

.team-photo {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.team-photo img {
  width: 100%;
  height: auto;
  transition: var(--transition-slow);
}

.team-photo::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--green-800) 0%, transparent 100%);
  opacity: 0;
  transition: var(--transition-base);
}

.team-photo:hover::before {
  opacity: 0.1;
}

.team-grid {
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.team-member {
  text-align: left;
}

.team-member-photo {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-md);
}

.team-member h4 {
  margin-bottom: var(--space-2);
}

.team-member .title {
  color: var(--gold-500);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background-color: var(--green-950);
  color: white;
  padding: var(--space-20) 0 var(--space-8);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, var(--gold-500) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.1;
  animation: stars 15s linear infinite;
  transform: translateX(-50%);
}

@keyframes stars {
  from {
    transform: translateX(-50%) rotate(0deg);
  }
  to {
    transform: translateX(-50%) rotate(360deg);
  }
}

.footer-grid {
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer h4 {
  color: var(--gold-400);
  margin-bottom: var(--space-4);
  font-size: var(--text-lg);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition-base);
}

.footer-links a:hover {
  color: var(--gold-300);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-8);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-sm);
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--gray-700);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-4);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  transition: var(--transition-base);
  min-height: 48px; /* Touch-friendly */
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--green-800);
  box-shadow: 0 0 0 3px rgba(26, 77, 64, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 374px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .hero h1 {
    font-size: var(--text-3xl);
  }
}

@media (min-width: 1440px) {
  .container {
    max-width: 1400px;
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
  .nav,
  .footer,
  .btn {
    display: none;
  }
  
  .section {
    padding: var(--space-8) 0;
  }
}