/* ============================================
   Boletus Intelligence — Design System
   Custom lightweight CSS · No framework
   Palette: Amber gold + Teal (organic + tech)
   ============================================ */

/* --- Custom Properties --- */
:root {
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;
  --space-4xl: 8rem;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 600ms;

  --gradient-primary: linear-gradient(135deg, #f59e0b, #14b8a6);
  --gradient-glow: linear-gradient(135deg, #f59e0b, #ef4444, #8b5cf6, #14b8a6);
}

/* --- Dark Theme (default) --- */
[data-theme="dark"] {
  --bg-primary: #09090b;
  --bg-secondary: #0c0c0f;
  --bg-tertiary: #151518;
  --bg-card: #111114;
  --bg-card-hover: #19191d;
  --bg-nav: rgba(9, 9, 11, 0.85);

  --text-primary: #f5f5f0;
  --text-secondary: #a1a1aa;
  --text-tertiary: #63636e;
  --text-muted: #3f3f46;

  --border-color: #23232a;
  --border-subtle: #1a1a1f;

  --accent-amber: #f59e0b;
  --accent-teal: #14b8a6;
  --accent-primary: #f59e0b;
}

/* --- Light Theme --- */
[data-theme="light"] {
  --bg-primary: #fafaf8;
  --bg-secondary: #f3f3ef;
  --bg-tertiary: #eaeae5;
  --bg-card: #ffffff;
  --bg-card-hover: #f7f7f3;
  --bg-nav: rgba(250, 250, 248, 0.88);

  --text-primary: #1a1a1a;
  --text-secondary: #555555;
  --text-tertiary: #999999;
  --text-muted: #cccccc;

  --border-color: #e0e0da;
  --border-subtle: #ebebeb;

  --accent-amber: #d48a06;
  --accent-teal: #0f9688;
  --accent-primary: #d48a06;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background var(--duration-normal) var(--ease-out),
              color var(--duration-normal) var(--ease-out);
}

/* Page entrance */
body.loading {
  opacity: 0;
}

body.loaded {
  opacity: 1;
  transition: opacity 0.8s var(--ease-out);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

::selection {
  background: var(--accent-amber);
  color: #09090b;
}

/* --- Noise overlay --- */
.noise {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* --- Scroll Progress --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  z-index: 1002;
  transform-origin: left;
  transform: scaleX(0);
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-nav);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.nav.scrolled {
  border-bottom-color: var(--border-color);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 28px;
  width: auto;
  object-fit: contain;
}

[data-theme="dark"] .logo-img {
  filter: brightness(0) invert(1) opacity(0.9);
}

[data-theme="light"] .logo-img {
  filter: none;
}

.logo-img-footer {
  height: 24px;
}

.nav-links {
  display: flex;
  gap: var(--space-2xl);
}

.nav-link {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent-amber);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }

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

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent-amber);
}

[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 64px;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: var(--space-4xl) 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.03em;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-teal);
  border-radius: 50%;
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(20, 184, 166, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(20, 184, 166, 0); }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(3.2rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.045em;
  margin-bottom: var(--space-xl);
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 540px;
  margin-bottom: var(--space-2xl);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-3xl);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.7rem 1.4rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #09090b;
  box-shadow: 0 2px 16px rgba(245, 158, 11, 0.2);
}

.btn-primary:hover {
  box-shadow: 0 4px 24px rgba(245, 158, 11, 0.35);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-tertiary);
  background: var(--bg-tertiary);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* --- Hero Stats --- */
.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.stat { display: flex; flex-direction: column; }

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border-color);
}

/* --- Scroll Hint --- */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.scroll-hint span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: var(--border-color);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -48px;
  left: 0;
  width: 100%;
  height: 20px;
  background: var(--accent-amber);
  animation: scroll-down 2.5s ease-in-out infinite;
}

@keyframes scroll-down {
  0% { top: -20px; }
  100% { top: 48px; }
}

/* --- Sections --- */
.section {
  padding: var(--space-4xl) 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 660px;
  margin: 0 auto var(--space-3xl);
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent-amber);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-md);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* --- About Cards --- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.about-card {
  padding: var(--space-2xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.about-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.about-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.about-card:hover::after { opacity: 1; }

.about-card-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.about-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.about-card p {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --- Services --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.service-card {
  position: relative;
  padding: var(--space-2xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
  overflow: hidden;
}

.service-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
}

/* Featured card: animated gradient border */
.service-card-featured {
  border-color: transparent;
  background-clip: padding-box;
}

.service-card-featured::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: var(--gradient-glow);
  background-size: 300% 300%;
  animation: gradient-rotate 6s linear infinite;
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

@keyframes gradient-rotate {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.service-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.service-header svg {
  color: var(--accent-amber);
}

.service-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.service-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-sm);
}

.service-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.service-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-features li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding-left: var(--space-lg);
  position: relative;
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  transform: translateY(-50%);
  background: var(--accent-teal);
  opacity: 0.6;
}

/* --- Tech Grid --- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-3xl);
}

.tech-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
}

.tech-item:hover {
  border-color: var(--accent-amber);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.tech-name {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.95rem;
}

.tech-cat {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* --- Manifesto --- */
.manifesto {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  position: relative;
}

.manifesto::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 2px;
  background: var(--gradient-primary);
}

.manifesto blockquote {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-primary);
  font-style: italic;
  max-width: 650px;
  margin: 0 auto var(--space-lg);
}

.manifesto cite {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-style: normal;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* --- Contact --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: start;
}

.contact-info .section-title,
.contact-info .section-desc {
  text-align: left;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color var(--duration-fast) var(--ease-out);
}

a.contact-item:hover {
  color: var(--accent-amber);
}

.contact-item svg {
  color: var(--accent-amber);
  flex-shrink: 0;
}

/* --- Form --- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-family: var(--font-heading);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.7rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--duration-fast) var(--ease-out);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-amber);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.08);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2363636e' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border-color);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  font-style: italic;
}

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

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
  width: 100%;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

/* --- Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger */
.about-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.about-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.services-grid .reveal:nth-child(2) { transition-delay: 0.12s; }
.services-grid .reveal:nth-child(3) { transition-delay: 0.24s; }

/* Hero stagger */
.hero-content .reveal:nth-child(1) { transition-delay: 0.1s; }
.hero-content .reveal:nth-child(2) { transition-delay: 0.2s; }
.hero-content .reveal:nth-child(3) { transition-delay: 0.35s; }
.hero-content .reveal:nth-child(4) { transition-delay: 0.5s; }
.hero-content .reveal:nth-child(5) { transition-delay: 0.65s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .about-grid,
  .services-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
  }

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

  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }

  .contact-info .section-title,
  .contact-info .section-desc {
    text-align: center;
  }

  .contact-details { align-items: center; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: var(--space-lg) var(--space-xl);
    background: var(--bg-nav);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-color);
    gap: var(--space-md);
  }

  .nav-links.active { display: flex; }
  .hamburger { display: flex; }

  .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .hamburger.active span:nth-child(2) { opacity: 0; }
  .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .section { padding: var(--space-3xl) 0; }
  .tech-grid { grid-template-columns: 1fr; }

  .scroll-hint { display: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-md); }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

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

  .stat-divider { width: 40px; height: 1px; }
}