/*
 * Design Brief: Nexforge ← inspired by https://agen.co/
 *
 * Structure: hero-centered-typography → trust-bar → numbered-capabilities →
 *   statement-band → case-study-split → integration-orbit → tech-icon-grid → cta-band → footer-multi-column
 *
 * Hero: centered stacked headline (typography-dominant), dual CTAs, trust logos below
 * Palette: dark purple-black (#0a0a0f / #1a1020) from reference; amber forge accent for Nexforge brand
 * Typography: Inter-style geometric sans, wide tracking on labels, clamp display scale
 * Motion: fade-up reveals, 0.6s ease-out, subtle hover lifts — no orbs or generic gradients
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Backgrounds — derived from agen.co og meta (#0a0a0f, #1a1020) */
  --color-bg: #0a0a0f;
  --color-bg-alt: #12121a;
  --color-bg-band: #1a1020;
  --color-surface: #16161f;
  --color-surface-raised: #1e1e2a;

  /* Text */
  --color-text: #f4f4f5;
  --color-text-muted: #a1a1aa;
  --color-text-dim: #71717a;
  --color-text-on-accent: #0a0a0f;

  /* Accent — forge amber (brand-adapted; reference uses violet highlights) */
  --color-accent: #e8923a;
  --color-accent-hover: #f0a855;
  --color-accent-muted: rgba(232, 146, 58, 0.15);
  --color-violet: #8b5cf6;
  --color-violet-muted: rgba(139, 92, 246, 0.12);

  /* Borders & dividers */
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.14);

  /* Typography */
  --font-display: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Code', 'Segoe UI Mono', monospace;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 999px;

  /* Spacing */
  --space-section: clamp(4rem, 8vw, 7rem);
  --space-block: clamp(1.5rem, 3vw, 2.5rem);
  --container-max: 1200px;
  --container-narrow: 900px;

  /* Transitions */
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-reveal: 0.65s cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 40px rgba(232, 146, 58, 0.08);
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

.container {
  width: min(100% - 2rem, var(--container-max));
  margin-inline: auto;
}

.container--narrow {
  width: min(100% - 2rem, var(--container-narrow));
}

.section-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.section-label::before {
  content: '/';
  color: var(--color-accent);
  margin-right: 0.25rem;
}

.section-heading {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.section-subheading {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--color-text-muted);
  margin-top: 1rem;
  max-width: 42rem;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background var(--transition-base), color var(--transition-base),
    border-color var(--transition-base), transform var(--transition-base),
    box-shadow var(--transition-base);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-text-on-accent);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

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

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

.btn--ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn--large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background var(--transition-base), border-color var(--transition-base),
    backdrop-filter var(--transition-base);
}

.site-header.is-scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.site-header__logo img {
  height: 28px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav__links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}

.site-nav__links a:hover {
  color: var(--color-text);
}

.site-nav__cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.site-nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}

.site-nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.site-nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero — centered typography */
.hero {
  position: relative;
  padding-top: calc(80px + var(--space-section));
  padding-bottom: var(--space-section);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(26, 16, 32, 0.8) 0%, transparent 60%),
    var(--color-bg);
}

.hero__inner {
  text-align: center;
}

.hero__stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15em;
  margin-bottom: 2rem;
}

.hero__line {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.hero__line--accent {
  color: var(--color-accent);
}

.hero__line--dim {
  color: var(--color-text-dim);
  font-weight: 300;
}

.hero__between {
  font-size: clamp(0.875rem, 2vw, 1.125rem);
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0.5rem 0;
}

.hero__pair {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 4vw, 3rem);
  flex-wrap: wrap;
}

.hero__pair-item {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  padding: 0.25rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 36rem;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

.hero__connector {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.4;
}

.hero__connector svg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(90vw, 800px);
  height: auto;
}

/* Trust bar */
.trust-bar {
  padding-block: 2.5rem;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.trust-bar__label {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-dim);
  margin-bottom: 1.5rem;
}

.trust-bar__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.5rem, 4vw, 3rem);
  flex-wrap: wrap;
}

.trust-bar__logo {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-dim);
  opacity: 0.6;
  transition: opacity var(--transition-base);
}

.trust-bar__logo:hover {
  opacity: 1;
}

/* Platform overview — statement band */
.platform {
  padding-block: var(--space-section);
  background: var(--color-bg);
}

.platform__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.platform__visual {
  position: relative;
  aspect-ratio: 1;
  max-width: 480px;
  margin-inline: auto;
}

.platform__orbit {
  position: absolute;
  inset: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  animation: orbit-spin 60s linear infinite;
}

.platform__orbit:nth-child(2) {
  inset: 15%;
  border-color: rgba(232, 146, 58, 0.2);
  animation-direction: reverse;
  animation-duration: 45s;
}

.platform__orbit:nth-child(3) {
  inset: 30%;
  border-color: rgba(139, 92, 246, 0.15);
  animation-duration: 30s;
}

.platform__core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

.platform__core span {
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

.platform__node {
  position: absolute;
  width: 48px;
  height: 48px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.platform__node--1 { top: 5%; left: 50%; transform: translateX(-50%); }
.platform__node--2 { top: 50%; right: 0; transform: translateY(-50%); }
.platform__node--3 { bottom: 5%; left: 50%; transform: translateX(-50%); }
.platform__node--4 { top: 50%; left: 0; transform: translateY(-50%); }

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

.platform__stat {
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
}

.platform__stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

.platform__stat-label {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  margin-top: 0.25rem;
}

/* Capabilities — numbered steps */
.capabilities {
  padding-block: var(--space-section);
  background: var(--color-bg-band);
}

.capabilities__header {
  margin-bottom: 3rem;
}

.capabilities__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.capability-step {
  background: var(--color-bg-alt);
  padding: 2rem 1.5rem;
  transition: background var(--transition-base);
}

.capability-step:hover {
  background: var(--color-surface);
}

.capability-step__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.capability-step__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.capability-step__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.capabilities__action {
  margin-top: 2.5rem;
  text-align: center;
}

/* Solutions — case study split */
.solutions {
  padding-block: var(--space-section);
  background: var(--color-bg);
}

.solutions__cards {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.case-study {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}

.case-study__quote-side {
  padding: 2.5rem;
  background: var(--color-bg-alt);
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--color-border);
}

.case-study__company {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.case-study__quote {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 1.5rem;
  font-style: italic;
}

.case-study__author {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.case-study__detail-side {
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.case-study__block h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-dim);
  margin-bottom: 1rem;
}

.case-study__block ul {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.case-study__block li {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-left: 1rem;
  position: relative;
  line-height: 1.5;
}

.case-study__block li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
}

.solutions__footer {
  margin-top: 2.5rem;
  text-align: center;
}

/* Technology — icon feature grid */
.technology {
  padding-block: var(--space-section);
  background: var(--color-bg-alt);
}

.technology__header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.technology__header .section-subheading {
  margin-inline: auto;
}

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

.tech-item {
  background: var(--color-bg);
  padding: 2rem;
  transition: background var(--transition-base);
}

.tech-item:hover {
  background: var(--color-surface);
}

.tech-item__icon {
  width: 40px;
  height: 40px;
  margin-bottom: 1.25rem;
  color: var(--color-accent);
}

.tech-item__title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.625rem;
}

.tech-item__desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.technology__action {
  margin-top: 2.5rem;
  text-align: center;
}

/* CTA band */
.cta-band {
  padding-block: var(--space-section);
  background:
    linear-gradient(135deg, var(--color-bg-band) 0%, rgba(26, 16, 32, 0.95) 100%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.cta-band__inner {
  max-width: 640px;
  margin-inline: auto;
}

.cta-band__heading {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.cta-band__text {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

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

/* Footer */
.site-footer {
  padding-block: 4rem 2rem;
  background: var(--color-bg);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.site-footer__brand p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
  max-width: 280px;
  line-height: 1.6;
}

.site-footer__col h4 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 1rem;
}

.site-footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.site-footer__col a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}

.site-footer__col a:hover {
  color: var(--color-text);
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-dim);
}

.site-footer__bottom a {
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}

.site-footer__bottom a:hover {
  color: var(--color-accent);
}

/* Modals */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal[hidden] {
  display: none;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal__panel {
  position: relative;
  width: min(100%, 520px);
  max-height: 85vh;
  overflow-y: auto;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: background var(--transition-base), color var(--transition-base);
}

.modal__close:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text);
}

.modal__panel h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-right: 2rem;
}

.modal__panel p {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.modal__panel ul {
  margin: 1rem 0;
  padding-left: 0;
}

.modal__panel li {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  padding: 0.375rem 0 0.375rem 1.25rem;
  position: relative;
}

.modal__panel li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.modal__panel .btn {
  margin-top: 1.5rem;
}

@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}