/*
 * Design Brief: Neuvex ← inspired by https://www.softeq.com/
 *
 * STRUCTURE: sticky-nav → hero-split → trust-bar → service-card-stack →
 * tabbed-capabilities → industry-grid → process-timeline → cta-band → footer
 *
 * HERO: split 55/45, typography-dominant left, abstract edge-AI visual right
 * BACKGROUND: light-dominant with dark navy bands (Softeq alternation)
 * ACCENT: professional blue + coral CTA (Softeq contrast pattern)
 *
 * TOKENS derived from Softeq analysis — NOT generic AI dark-gradient defaults
 */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7fb;
  --color-bg-dark: #0f1a24;
  --color-bg-dark-alt: #162433;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-text: #1a2b3c;
  --color-text-muted: #5a6d7e;
  --color-text-on-dark: #e8edf2;
  --color-text-muted-on-dark: #94a8b8;
  --color-accent: #0066cc;
  --color-accent-hover: #004d99;
  --color-accent-secondary: #ff6b2c;
  --color-accent-secondary-hover: #e85a1f;
  --color-border: #dce4ec;
  --color-border-dark: #2a3d4f;

  --font-display: 'DM Sans', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 999px;

  --space-section: clamp(4rem, 8vw, 7rem);
  --space-grid: clamp(1.5rem, 3vw, 2.5rem);
  --container-max: 1200px;
  --container-wide: 1320px;

  --shadow-sm: 0 1px 3px rgba(15, 26, 36, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 26, 36, 0.08);
  --shadow-lg: 0 16px 48px rgba(15, 26, 36, 0.12);

  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-reveal: 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

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

ul, ol {
  list-style: none;
}

.container {
  width: min(100% - 2.5rem, var(--container-max));
  margin-inline: auto;
}

.container--wide {
  width: min(100% - 2.5rem, var(--container-wide));
  margin-inline: auto;
}

/* Typography */
.eyebrow {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.section-title--light {
  color: var(--color-text-on-dark);
}

.section-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-top: 1rem;
}

.section-subtitle--light {
  color: var(--color-text-muted-on-dark);
}

.section-header {
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.section-header--center {
  text-align: center;
}

.section-header--center .section-subtitle {
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  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);
}

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

.btn--primary {
  background: var(--color-accent-secondary);
  color: #fff;
}

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

.btn--secondary {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn--secondary:hover {
  background: var(--color-accent);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  padding: 0.5rem 0;
  border-radius: 0;
  position: relative;
}

.btn--ghost::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.btn--ghost:hover::after {
  width: 100%;
}

.btn--nav {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-pill);
}

.btn--nav:hover {
  background: var(--color-accent-hover);
}

.btn--light {
  background: #fff;
  color: var(--color-bg-dark);
}

.btn--light:hover {
  background: var(--color-bg-alt);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1rem 0;
}

.site-header__logo img {
  height: 32px;
  width: auto;
}

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

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.site-nav__links a {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
}

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

.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);
}

/* Hero — split layout */
.hero {
  background: var(--color-bg);
  overflow: hidden;
}

.hero--split {
  padding-block: var(--space-section);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-grid);
  align-items: center;
  min-height: min(85vh, 820px);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin: 1rem 0 1.25rem;
}

.hero__subtitle {
  font-size: clamp(1.0625rem, 1.8vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 48ch;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__diagram {
  width: 100%;
  max-width: 520px;
}

/* Trust bar */
.trust-bar {
  padding: 2.5rem 0;
  background: var(--color-bg-alt);
  border-block: 1px solid var(--color-border);
}

.trust-bar__label {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 1.5rem;
}

.trust-bar__logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2.5rem 3.5rem;
}

.trust-bar__logo {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-muted);
  opacity: 0.7;
  letter-spacing: 0.02em;
}

/* Platform — expandable service cards */
.platform {
  padding-block: var(--space-section);
  background: var(--color-bg);
}

.service-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.service-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover,
.service-card.is-active {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.service-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.5rem 2rem;
  text-align: left;
  cursor: pointer;
}

.service-card__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}

.service-card__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  transition: transform var(--transition-base), background var(--transition-base);
}

.service-card.is-active .service-card__icon {
  transform: rotate(45deg);
  background: var(--color-accent);
  color: #fff;
}

.service-card__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-reveal);
}

.service-card.is-active .service-card__body {
  grid-template-rows: 1fr;
}

.service-card__content {
  overflow: hidden;
}

.service-card__inner {
  padding: 0 2rem 1.75rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
}

.service-card__desc {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.service-card__tag {
  font-size: 0.8125rem;
  padding: 0.375rem 0.75rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius-pill);
  color: var(--color-text);
}

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

.cap-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.cap-tab {
  padding: 0.75rem 1.25rem;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  transition: all var(--transition-base);
}

.cap-tab:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.cap-tab.is-active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.cap-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-grid);
  align-items: center;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3rem);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.cap-panel.is-active {
  display: grid;
}

.cap-panel__list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cap-panel__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem;
  border-radius: var(--radius-md);
  transition: background var(--transition-base);
}

.cap-panel__item:hover {
  background: var(--color-bg-alt);
}

.cap-panel__item-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 102, 204, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-accent);
}

.cap-panel__item h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.cap-panel__item p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.cap-panel__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.cap-panel__graphic {
  width: 100%;
  max-width: 400px;
}

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

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.industry-card {
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base),
              border-color var(--transition-base);
}

.industry-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.industry-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.industry-card h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.industry-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

/* Technology — process timeline */
.technology {
  padding-block: var(--space-section);
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: var(--color-border-dark);
}

.process-step {
  position: relative;
  text-align: center;
  padding: 0 0.5rem;
}

.process-step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  background: var(--color-bg-dark-alt);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
  position: relative;
  z-index: 1;
}

.process-step h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: 0.875rem;
  color: var(--color-text-muted-on-dark);
  line-height: 1.5;
}

.technology__cta {
  text-align: center;
  margin-top: 3rem;
}

/* CTA band */
.cta-band {
  padding-block: var(--space-section);
  background: linear-gradient(135deg, var(--color-accent) 0%, #004080 100%);
  color: #fff;
  text-align: center;
}

.cta-band__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  max-width: 20ch;
  margin-inline: auto;
}

.cta-band__text {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 50ch;
  margin: 0 auto 2rem;
}

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

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

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

.site-footer__brand img {
  height: 28px;
  margin-bottom: 1rem;
}

.site-footer__brand p {
  font-size: 0.9375rem;
  color: var(--color-text-muted-on-dark);
  max-width: 32ch;
}

.site-footer__col h4 {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.25rem;
  color: var(--color-text-muted-on-dark);
}

.site-footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.site-footer__col a {
  font-size: 0.9375rem;
  color: var(--color-text-on-dark);
}

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

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border-dark);
  font-size: 0.875rem;
  color: var(--color-text-muted-on-dark);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.site-footer__legal a {
  color: var(--color-text-muted-on-dark);
}

.site-footer__legal a:hover {
  color: var(--color-text-on-dark);
}

/* Modals */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal[hidden] {
  display: none;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 26, 36, 0.6);
  backdrop-filter: blur(4px);
}

.modal__panel {
  position: relative;
  width: min(100%, 540px);
  max-height: 85vh;
  overflow-y: auto;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  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: var(--color-bg-alt);
  color: var(--color-text);
}

.modal__panel h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  padding-right: 2rem;
}

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

.modal__panel ul {
  list-style: disc;
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.modal__panel li {
  margin-bottom: 0.5rem;
}

.modal__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}