/* ============================================
   North Axis — Design System
   ============================================ */

:root {
  --color-primary: #1a2b4a;
  --color-primary-light: #243a5e;
  --color-accent: #3b6fd4;
  --color-accent-hover: #2d5bb8;
  --color-dark: #0f1923;
  --color-text: #2c3e50;
  --color-text-light: #5a6b7d;
  --color-text-muted: #8a9bb0;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f9;
  --color-bg-dark: #0f1923;
  --color-border: #e2e8f0;
  --color-border-light: #f0f3f7;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.75rem;
  --font-size-5xl: 3.25rem;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 2.5rem;
  --spacing-3xl: 3.5rem;
  --spacing-4xl: 5rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --shadow-sm: 0 1px 3px rgba(15, 25, 35, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 25, 35, 0.08);
  --shadow-lg: 0 8px 32px rgba(15, 25, 35, 0.12);

  --transition: 0.25s ease;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

address {
  font-style: normal;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--spacing-md);
  z-index: 1000;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.skip-link:focus {
  top: var(--spacing-md);
}

/* Container */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

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

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

.btn--secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}

.btn--full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(15, 25, 35, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: #fff;
  font-weight: 700;
  font-size: var(--font-size-lg);
  letter-spacing: -0.02em;
}

.nav__logo:hover {
  color: #fff;
}

.nav__logo-icon {
  width: 28px;
  height: 28px;
  color: var(--color-accent);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav__link {
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: #fff;
}

.nav__link--cta {
  padding: 0.5rem 1.25rem;
  background: var(--color-accent);
  color: #fff !important;
  border-radius: var(--radius-md);
}

.nav__link--cta:hover {
  background: var(--color-accent-hover);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition);
}

/* Hero */
.hero {
  position: relative;
  min-height: 88vh;
  min-height: 88dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-dark);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59, 111, 212, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(26, 43, 74, 0.4) 0%, transparent 50%),
    linear-gradient(180deg, var(--color-dark) 0%, var(--color-primary) 100%);
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 20%, transparent 80%);
}

.hero__content {
  position: relative;
  text-align: center;
  padding: calc(var(--header-height) + var(--spacing-2xl)) 0 var(--spacing-3xl);
  max-width: 720px;
  margin: 0 auto;
}

.hero__eyebrow {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-lg);
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #fff;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
}

.hero__tagline {
  font-size: var(--font-size-xl);
  font-weight: 300;
  color: rgba(255, 255, 255, 0.7);
  max-width: 560px;
  margin: 0 auto var(--spacing-2xl);
  line-height: 1.5;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
}

.hero__scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.3), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

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

.section__header {
  margin-bottom: var(--spacing-2xl);
  max-width: 640px;
}

.section__label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.section__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  line-height: 1.2;
}

.section__subtitle {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 600px;
}

/* About */
.about {
  background: var(--color-bg);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.about__text p {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

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

.about__values {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.value-card {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition), transform var(--transition);
}

.value-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.value-card__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  color: var(--color-accent);
}

.value-card__icon svg {
  width: 22px;
  height: 22px;
}

.value-card__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.value-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.5;
}

/* Services */
.services {
  background: var(--color-bg-alt);
}

.services__categories {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.service-category__title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.service-category__intro {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
  max-width: 680px;
  line-height: 1.6;
}

.service-category__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.service-item {
  padding: var(--spacing-lg);
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.service-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.service-item__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.service-item__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.5;
}

/* Contact */
.contact {
  background: var(--color-bg);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.contact__intro {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
}

.contact__address {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact__detail {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-base);
  color: var(--color-text);
}

.contact__detail svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-accent);
}

.contact__detail a {
  color: var(--color-text);
  font-weight: 500;
}

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

.contact__legal {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.contact__legal-item {
  display: flex;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.contact__legal-item dt {
  font-weight: 600;
  color: var(--color-primary);
  min-width: 7rem;
}

.contact__legal-item dd {
  color: var(--color-text-light);
  margin: 0;
}

/* Form */
.contact__form {
  padding: var(--spacing-xl);
  background: var(--color-bg-alt);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form__group {
  margin-bottom: var(--spacing-md);
}

.form__note {
  margin-top: var(--spacing-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.5;
}

.form__note a {
  font-weight: 500;
}

.form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

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

.form__input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 111, 212, 0.15);
}

.form__input--error {
  border-color: #e53e3e;
}

.form__input--error:focus {
  box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.15);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__error {
  display: block;
  font-size: var(--font-size-xs);
  color: #e53e3e;
  margin-top: var(--spacing-xs);
  min-height: 1rem;
}

.form__success {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  text-align: center;
}

.form__group--checkbox {
  margin-bottom: var(--spacing-lg);
}

.form__checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.5;
  cursor: pointer;
}

.form__checkbox {
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  margin-top: 0.2rem;
  accent-color: var(--color-accent);
}

.form__checkbox-label a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Legal / Privacy page */
.legal-page {
  padding-top: calc(var(--header-height) + var(--spacing-3xl));
  padding-bottom: var(--spacing-4xl);
  background: var(--color-bg);
}

.legal-page__header {
  margin-bottom: var(--spacing-3xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.legal-page__header h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-sm);
}

.legal-page__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.legal-page__body {
  max-width: 760px;
}

.legal-section {
  margin-bottom: var(--spacing-2xl);
}

.legal-section h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.legal-section h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.legal-section p {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.legal-section ul {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-xl);
  color: var(--color-text-light);
  line-height: 1.7;
}

.legal-section li {
  margin-bottom: var(--spacing-sm);
}

.legal-section li strong {
  color: var(--color-text);
}

.legal-address {
  font-style: normal;
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.legal-table-wrap {
  overflow-x: auto;
  margin-bottom: var(--spacing-md);
}

.legal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.legal-table th,
.legal-table td {
  padding: var(--spacing-md);
  text-align: left;
  border: 1px solid var(--color-border);
  vertical-align: top;
}

.legal-table th {
  background: var(--color-bg-alt);
  font-weight: 600;
  color: var(--color-primary);
}

.legal-table td {
  color: var(--color-text-light);
  line-height: 1.5;
}

.legal-page__back {
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
}

.legal-page__back a {
  font-weight: 500;
}

.footer__links {
  margin-top: var(--spacing-sm);
}

.footer__links-sep {
  margin: 0 var(--spacing-sm);
  color: rgba(255, 255, 255, 0.25);
}

.footer__links a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.45);
  text-decoration: underline;
}

.footer__links a:hover {
  color: rgba(255, 255, 255, 0.75);
}

/* Footer */
.footer {
  background: var(--color-bg-dark);
  padding: var(--spacing-2xl) 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer__copy,
.footer__address {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.45);
}

.footer__address {
  margin-top: var(--spacing-xs);
}

.footer__legal {
  display: flex;
  gap: var(--spacing-xl);
}

.footer__legal-item {
  display: flex;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.footer__legal-item dt {
  font-weight: 600;
  color: rgba(255, 255, 255, 0.55);
}

.footer__legal-item dd {
  color: rgba(255, 255, 255, 0.45);
  margin: 0;
}

/* Responsive */
@media (max-width: 900px) {
  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

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

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-3xl: 1.625rem;
    --spacing-4xl: 3.5rem;
    --spacing-3xl: 2.5rem;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(15, 25, 35, 0.98);
    backdrop-filter: blur(12px);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
  }

  .nav__menu--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__menu li {
    width: 100%;
    text-align: center;
  }

  .nav__link {
    display: block;
    padding: var(--spacing-md) var(--spacing-xl);
  }

  .nav__link--cta {
    margin: var(--spacing-sm) var(--spacing-xl);
    display: inline-block;
  }

  .nav__toggle--active .nav__toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav__toggle--active .nav__toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav__toggle--active .nav__toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero__tagline {
    font-size: var(--font-size-lg);
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .hero__actions .btn {
    width: 100%;
    max-width: 280px;
  }

  .service-category__grid {
    grid-template-columns: 1fr;
  }

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

  .footer__inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer__legal {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

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

  .contact__form {
    padding: var(--spacing-lg);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}