/* ==========================================================================
   JINJIN NETWORK - Brutalist & Swiss Typographic System
   ========================================================================== */

/* 1. Imports & Fonts */
@import url('https://fonts.googleapis.com/css2?family=Archivo+Black&family=JetBrains+Mono:wght@400;500;700&family=Plus+Jakarta+Sans:wght@500;800&display=swap');

/* 2. Custom Properties (Utilitarian Tokens) */
:root {
  --bg-matte: #F4F4F0;      /* Unbleached matte documentation paper */
  --fg-ink: #111111;       /* Carbon ink black */
  --accent-red: #E61919;   /* Aviation / Warning Red */
  --border-thick: 2px solid var(--fg-ink);
  --border-thin: 1px solid var(--fg-ink);
  --border-light: 1px solid rgba(17, 17, 17, 0.15);
  
  --font-macro: 'Archivo Black', 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Plus Jakarta Sans', sans-serif;
}

/* 3. Base Reset & Print-like Aesthetics */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important; /* STRICT BAN ON ROUNDED CORNERS */
}

html {
  background-color: var(--bg-matte);
  color: var(--fg-ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
  position: relative;
  /* Blueprint background grid pattern */
  background-image: 
    linear-gradient(rgba(17, 17, 17, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 17, 17, 0.02) 1px, transparent 1px);
  background-size: 30px 30px;
}

/* 4. Typographic Hierarchy */
h1, h2, h3, h4 {
  font-family: var(--font-macro);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--fg-ink);
}

p {
  font-family: var(--font-sans);
  color: #333333;
  line-height: 1.6;
}

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

/* Monospace telemetry / labels */
.label-mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-ink);
  font-weight: 700;
}

/* 5. Utility Layout Elements */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
}

/* Rigid grid separator */
.separator-red {
  height: 6px;
  background-color: var(--accent-red);
  width: 100%;
  border-top: var(--border-thick);
  border-bottom: var(--border-thick);
}

.divider-dark {
  height: 1px;
  background-color: var(--fg-ink);
  width: 100%;
}

/* 6. Navigation (Rigid Box layout) */
.nav-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  border-bottom: var(--border-thick);
  background-color: var(--bg-matte);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-item {
  border-right: var(--border-thin);
  padding: 24px 30px;
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

.nav-item:last-child {
  border-right: none;
}

.nav-item.logo {
  font-family: var(--font-macro);
  font-size: 1.3rem;
  letter-spacing: -0.05em;
  font-weight: 900;
  color: var(--fg-ink);
  display: flex;
  gap: 12px;
}

.nav-item.logo span {
  background-color: var(--fg-ink);
  color: var(--bg-matte);
  padding: 2px 8px;
}

.nav-item.link:hover {
  background-color: var(--fg-ink);
  color: var(--bg-matte);
}

.nav-item.tel-contact {
  background-color: var(--accent-red);
  color: var(--bg-matte);
}

.nav-item.tel-contact:hover {
  background-color: var(--fg-ink);
  color: var(--bg-matte);
}

/* 7. Hero Section (Split Asymmetric Layout) */
.hero-sec {
  border-bottom: var(--border-thick);
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  min-height: calc(100vh - 72px);
}

.hero-left {
  padding: 80px 40px 80px 0;
  border-right: var(--border-thick);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-eyebrow-box {
  border: var(--border-thin);
  padding: 10px 16px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: fit-content;
  margin-bottom: 40px;
}

.hero-red-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-red);
}

.hero-headline {
  font-size: clamp(3.5rem, 6vw, 6.5rem);
  margin-bottom: 30px;
  word-break: break-all;
}

.hero-headline span {
  color: var(--accent-red);
}

.hero-subtext {
  font-size: 1.15rem;
  max-width: 55ch;
  margin-bottom: 50px;
}

/* Brutalist Button group */
.b-btn-group {
  display: flex;
  gap: 1px;
  background-color: var(--fg-ink);
  border: var(--border-thick);
  width: fit-content;
}

.b-btn {
  background-color: var(--bg-matte);
  color: var(--fg-ink);
  padding: 20px 40px;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.b-btn:hover {
  background-color: var(--fg-ink);
  color: var(--bg-matte);
}

.b-btn-primary {
  background-color: var(--fg-ink);
  color: var(--bg-matte);
}

.b-btn-primary:hover {
  background-color: var(--accent-red);
  color: var(--bg-matte);
}

.b-btn:active {
  background-color: #000;
  transform: translateY(1px);
}

/* Right side details (Technical Readouts) */
.hero-right {
  background-color: var(--fg-ink);
  color: var(--bg-matte);
  padding: 60px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.tactical-header {
  border-bottom: 1px solid rgba(244, 244, 240, 0.1);
  padding-bottom: 20px;
  margin-bottom: 40px;
}

.tactical-title {
  color: var(--bg-matte);
  font-size: 1.5rem;
}

.terminal-box {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #888;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.terminal-line {
  display: flex;
  justify-content: space-between;
}

.terminal-line .t-value {
  color: var(--accent-red);
  font-weight: 700;
}

.terminal-wave-container {
  border: 1px dashed rgba(244, 244, 240, 0.15);
  height: 120px;
  margin-top: 40px;
  position: relative;
  background: rgba(0,0,0,0.2);
}

/* Giant technical numbers at the bottom */
.tactical-bottom {
  border-top: 1px solid rgba(244, 244, 240, 0.1);
  padding-top: 30px;
  margin-top: 40px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(244, 244, 240, 0.5);
  display: flex;
  justify-content: space-between;
}

/* 8. Rigid Metrics Section */
.metrics-section {
  border-bottom: var(--border-thick);
}

.metrics-layout {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.metric-cell {
  border-right: var(--border-thin);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 200px;
}

.metric-cell:last-child {
  border-right: none;
}

.metric-num-big {
  font-family: var(--font-macro);
  font-size: 4.5rem;
  line-height: 0.8;
  margin-bottom: 20px;
}

.metric-num-big span {
  font-size: 2rem;
  color: var(--accent-red);
}

.metric-cell-title {
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.metric-cell-desc {
  font-size: 0.8rem;
  color: #666;
}

/* 9. Compartmentalized Solutions Section */
.solutions-sec {
  padding: 100px 0;
  border-bottom: var(--border-thick);
}

.solutions-grid-brutalist {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 60px;
}

.sol-box {
  border: var(--border-thick);
  background-color: var(--bg-matte);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 400px;
  transition: all 0.2s ease;
}

.sol-box:hover {
  background-color: var(--fg-ink);
  color: var(--bg-matte);
}

.sol-box-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 30px;
}

.sol-box-index {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
}

.sol-box-icon {
  width: 40px;
  height: 40px;
  stroke: var(--fg-ink);
  stroke-width: 2;
  fill: none;
}

.sol-box:hover .sol-box-icon {
  stroke: var(--bg-matte);
}

.sol-box-title {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.sol-box-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 30px;
  flex-grow: 1;
}

.sol-box:hover .sol-box-desc {
  color: #ccc;
}

.sol-technical-specs {
  border-top: var(--border-light);
  padding-top: 20px;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sol-box:hover .sol-technical-specs {
  border-top-color: rgba(244, 244, 240, 0.15);
}

.sol-technical-specs li {
  display: flex;
  justify-content: space-between;
}

.sol-technical-specs li span:last-child {
  color: var(--accent-red);
}

/* 10. Infrastructure Section (High Contrast Technical blueprints) */
.infra-sec {
  padding: 100px 0;
  border-bottom: var(--border-thick);
}

.infra-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.infra-grid-b {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  background-color: var(--fg-ink);
  border: var(--border-thick);
}

.infra-card-b {
  background-color: var(--bg-matte);
  padding: 30px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.infra-card-b h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.infra-card-b p {
  font-size: 0.85rem;
  color: #555;
  line-height: 1.6;
}

.infra-card-b .cell-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-red);
  margin-bottom: 20px;
  display: block;
}

.blueprint-visual-box {
  border: var(--border-thick);
  height: 380px;
  position: relative;
  background-color: #0A0A0A;
}

.blueprint-header {
  background-color: var(--fg-ink);
  color: var(--bg-matte);
  padding: 12px 20px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  display: flex;
  justify-content: space-between;
}

.blueprint-grid-bg {
  position: absolute;
  top: 40px;
  bottom: 0;
  left: 0;
  right: 0;
  background-image: 
    linear-gradient(rgba(244, 244, 240, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 244, 240, 0.02) 1px, transparent 1px);
  background-size: 20px 20px;
}

.blueprint-svg {
  width: 100%;
  height: calc(100% - 40px);
  position: absolute;
  top: 40px;
  left: 0;
}

.blueprint-svg line, .blueprint-svg path {
  stroke: rgba(244, 244, 240, 0.1);
  stroke-width: 1;
  fill: none;
}

.blueprint-svg path.active-path {
  stroke: var(--accent-red);
  stroke-dasharray: 10 180;
  animation: brutalistFlow 4s linear infinite;
}

.blueprint-svg path.active-path-white {
  stroke: var(--bg-matte);
  stroke-dasharray: 15 150;
  animation: brutalistFlow 3s linear infinite reverse;
}

@keyframes brutalistFlow {
  to { stroke-dashoffset: -165; }
}

/* 11. Heavy Form & Contact Section */
.contact-sec {
  background-color: var(--bg-matte);
  padding: 100px 0;
}

.contact-layout-b {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: var(--border-thick);
}

.contact-left-b {
  padding: 60px;
  border-right: var(--border-thick);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-title-heavy {
  font-size: clamp(2.5rem, 4vw, 4.5rem);
  line-height: 0.95;
  margin-bottom: 40px;
}

.contact-title-heavy span {
  color: var(--accent-red);
}

.b-contact-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.b-contact-row {
  border-top: var(--border-light);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.b-contact-row:first-child {
  border-top: none;
  padding-top: 0;
}

.b-contact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #666;
}

.b-contact-value {
  font-family: var(--font-macro);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.contact-right-b {
  padding: 60px;
  background-color: var(--fg-ink);
  color: var(--bg-matte);
}

.contact-form-title {
  font-size: 1.8rem;
  color: var(--bg-matte);
  margin-bottom: 24px;
}

.b-form-group {
  margin-bottom: 24px;
}

.b-form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: #888;
  margin-bottom: 8px;
}

.b-form-input, .b-form-textarea {
  width: 100%;
  background-color: transparent;
  border: 1px solid rgba(244, 244, 240, 0.2);
  padding: 16px;
  color: var(--bg-matte);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
}

.b-form-input:focus, .b-form-textarea:focus {
  border-color: var(--accent-red);
}

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

.b-submit-btn {
  background-color: var(--accent-red);
  color: var(--bg-matte);
  width: 100%;
  border: none;
  padding: 20px;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.b-submit-btn:hover {
  background-color: var(--bg-matte);
  color: var(--fg-ink);
}

/* 12. Monolithic Footer */
.footer-sec {
  border-top: var(--border-thick);
  background-color: var(--bg-matte);
  padding: 60px 0;
}

.footer-layout-b {
  display: grid;
  grid-template-columns: 2fr 1fr;
  align-items: center;
  gap: 40px;
}

.footer-left-b {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.8;
  color: #666;
}

.footer-left-b a {
  text-decoration: underline;
  color: var(--fg-ink);
}

.footer-right-b {
  text-align: right;
}

.barcode-sim {
  display: inline-block;
  letter-spacing: 1px;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
  border-bottom: 2px solid var(--fg-ink);
  padding-bottom: 4px;
}

/* 13. Responsive Adaptations */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
  }
  .hero-left {
    border-right: none;
    border-bottom: var(--border-thick);
    padding: 60px 0;
  }
  .metrics-layout {
    grid-template-columns: repeat(2, 1fr);
  }
  .metric-cell {
    border-bottom: var(--border-thin);
  }
  .metric-cell:nth-child(2) {
    border-right: none;
  }
  .solutions-grid-brutalist {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .infra-layout {
    grid-template-columns: 1fr;
  }
  .contact-layout-b {
    grid-template-columns: 1fr;
  }
  .contact-left-b {
    border-right: none;
    border-bottom: var(--border-thick);
  }
}

@media (max-width: 768px) {
  .nav-grid {
    grid-template-columns: 1fr;
  }
  .nav-item {
    border-right: none;
    border-bottom: var(--border-thin);
    padding: 16px 20px;
  }
  .nav-item:last-child {
    border-bottom: none;
  }
  .metrics-layout {
    grid-template-columns: 1fr;
  }
  .metric-cell {
    border-right: none;
  }
  .footer-layout-b {
    grid-template-columns: 1fr;
  }
  .footer-right-b {
    text-align: left;
  }
}