/* ============================================================
   ThirdBoard — Main Stylesheet
   ============================================================ */

/* --- Reset & Base ------------------------------------------*/

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

:root {
  --bg:          #040608;
  --bg-1:        #070b10;
  --bg-2:        #0c1219;
  --bg-3:        #111a24;
  --border:      rgba(255,255,255,0.07);
  --border-hi:   rgba(255,255,255,0.14);
  --text:        #dde4ed;
  --text-muted:  #7a8fa0;
  --text-dim:    #8a9bac;
  --accent:      #00d4a8;
  --accent-dark: #009f7e;
  --accent-glow: rgba(0, 212, 168, 0.15);
  --blue:        #0a84ff;
  --blue-dim:    rgba(10, 132, 255, 0.12);
  --font-sans:   'Inter', system-ui, sans-serif;
  --font-mono:   'JetBrains Mono', 'Fira Code', monospace;
  --radius:      4px;
  --radius-lg:   8px;
  --transition:  0.2s ease;
  --nav-height:  64px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img { display: block; max-width: 100%; }

ul { list-style: none; }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}

.mono { font-family: var(--font-mono); }
.muted { color: var(--text-muted); }


/* --- Scrollbar -----------------------------------------------*/

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }


/* --- Buttons -------------------------------------------------*/

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-primary:hover {
  background: #00e8b8;
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-1px);
}

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

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: transparent;
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-dim);
  background: rgba(255,255,255,0.04);
}

.btn-outline-sm {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  background: transparent;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  border: 1px solid rgba(0, 212, 168, 0.35);
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-outline-sm:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
}


/* --- Navigation ----------------------------------------------*/

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}

.nav.scrolled {
  background: rgba(4, 6, 8, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}

.nav-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 48px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  width: 22px;
  height: 22px;
  background: var(--accent);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
}

.nav-links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  transition: color var(--transition);
  white-space: nowrap;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-dim);
  border-radius: 1px;
  transition: all var(--transition);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  background: rgba(4, 6, 8, 0.97);
  border-bottom: 1px solid var(--border);
  padding: 16px 32px 24px;
}

.nav-mobile a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}

.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a:hover { color: var(--text); }
.nav-mobile.open { display: flex; }


/* --- Hero ----------------------------------------------------*/

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-height) + 80px) 0 0;
  overflow: hidden;
}

#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Radial fade at bottom */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 280px;
  background: linear-gradient(to top, var(--bg), transparent);
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}

.hero-label {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--accent);
  padding: 4px 10px;
  border: 1px solid rgba(0, 212, 168, 0.25);
  border-radius: 2px;
  background: rgba(0, 212, 168, 0.06);
}

.hero-title {
  font-size: clamp(42px, 7vw, 88px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 24px;
}

.hero-title em {
  font-style: normal;
  color: var(--accent);
}

.hero-sub {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-dim);
  max-width: 580px;
  line-height: 1.65;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* Stats bar */
.hero-bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  max-width: 1160px;
  margin: 80px auto 0;
  padding: 0 32px 48px;
  gap: 0;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.hero-stat span:first-child {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}

.hero-stat span:last-child {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.hero-bar-div {
  width: 1px;
  height: 40px;
  background: var(--border);
  margin: 0 40px;
  flex-shrink: 0;
}

.scroll-cue {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--text-muted);
  animation: scrollBob 2s ease-in-out infinite;
  transition: color var(--transition);
}

.scroll-cue:hover { color: var(--text); }

@keyframes scrollBob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}


/* --- Mission -------------------------------------------------*/

.mission {
  padding: 80px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-1);
}

.mission-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.mission-inner .mono {
  font-size: 11px;
  letter-spacing: 0.12em;
}

.mission-inner blockquote {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 300;
  color: var(--text);
  line-height: 1.6;
  letter-spacing: -0.01em;
  border: none;
}


/* --- Sections ------------------------------------------------*/

.section {
  padding: 100px 0;
}

.section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 48px;
}

.section-num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  position: relative;
  padding-left: 16px;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 1px;
  background: var(--border-hi);
}

.section-title {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #fff;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 620px;
  margin-bottom: 64px;
}


/* --- About ---------------------------------------------------*/

.about {
  background: var(--bg-1);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-left h2 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #fff;
  margin-bottom: 28px;
  line-height: 1.2;
}

.about-left p {
  color: var(--text-dim);
  margin-bottom: 18px;
  font-size: 16px;
}

.about-left p:last-child { margin-bottom: 0; }

.about-right {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pillar {
  display: flex;
  gap: 20px;
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: all var(--transition);
  cursor: default;
}

.pillar:hover {
  background: var(--bg-2);
  border-color: var(--border);
}

.pillar-num {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-top: 3px;
  flex-shrink: 0;
}

.pillar h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.pillar p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}


/* --- Services ------------------------------------------------*/

.services {
  border-top: 1px solid var(--border);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.service-card {
  background: var(--bg-1);
  padding: 36px 32px;
  transition: background var(--transition);
  position: relative;
}

.service-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.3s ease;
  transform-origin: left;
}

.service-card:hover { background: var(--bg-2); }
.service-card:hover::after { transform: scaleX(1); }

.service-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}

.service-icon {
  color: var(--accent);
  opacity: 0.85;
  flex-shrink: 0;
}

.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.service-card > p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-list li {
  font-size: 13px;
  color: var(--text-dim);
  padding-left: 16px;
  position: relative;
}

.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}


/* --- Expertise -----------------------------------------------*/

.expertise {
  background: var(--bg-1);
  border-top: 1px solid var(--border);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
}

.expertise-col h3 {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.expertise-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.expertise-col li {
  font-size: 14px;
  color: var(--text-dim);
  padding-left: 14px;
  position: relative;
  line-height: 1.4;
}

.expertise-col li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 1px;
  background: var(--border-hi);
}


/* --- Process -------------------------------------------------*/

.process {
  border-top: 1px solid var(--border);
}

.process-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
}

.process-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-num {
  font-size: 28px;
  font-weight: 300;
  color: var(--accent);
  letter-spacing: -0.02em;
  opacity: 0.7;
}

.step-content h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

.process-line {
  width: 60px;
  height: 1px;
  background: var(--border);
  flex-shrink: 0;
  margin-top: 48px;
}


/* --- Contact -------------------------------------------------*/

.contact {
  background: var(--bg-1);
  border-top: 1px solid var(--border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: start;
}

.contact-left h2 {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #fff;
  margin-bottom: 20px;
  line-height: 1.15;
}

.contact-left > p {
  font-size: 16px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-item span:first-child {
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.contact-item span:last-child,
.contact-item a {
  font-size: 15px;
  color: var(--text);
  transition: color var(--transition);
}

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

/* Form */

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
  -webkit-appearance: none;
}

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

.form-group select { cursor: pointer; }

.form-group select option {
  background: var(--bg-2);
  color: var(--text);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: rgba(0, 212, 168, 0.4);
  box-shadow: 0 0 0 3px rgba(0, 212, 168, 0.08);
}

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

.form-note {
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-align: center;
}


/* --- Footer --------------------------------------------------*/

.footer {
  padding: 48px 0 32px;
  border-top: 1px solid var(--border);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom .mono {
  font-size: 12px;
  letter-spacing: 0.04em;
}


/* --- Animations ----------------------------------------------*/

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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


/* --- Responsive ----------------------------------------------*/

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
  }

  .process-steps {
    flex-direction: column;
    gap: 40px;
  }

  .process-line {
    width: 1px;
    height: 40px;
    margin-top: 0;
  }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }

  .nav-links,
  .btn-outline-sm { display: none; }

  .nav-toggle { display: flex; }

  .hero-title { letter-spacing: -0.025em; }

  .hero-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    padding-bottom: 64px;
  }

  .hero-bar-div { display: none; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .expertise-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .section { padding: 72px 0; }
}

@media (max-width: 480px) {
  .hero-content { padding: 0 20px; }
  .hero-bar { padding: 0 20px 64px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn-ghost { width: 100%; justify-content: center; }
}