/* === BASE STYLES === */:root {
  --color-1: #0a0a1a;
  --color-2: #0d1b3e;
  --color-3: #0a2240;
  --color-4: #00e5ff;
  --color-5: #00b8d9;
  --color-6: #ffffff;
  --color-7: #b0c4de;
  --color-8: #1a3560;
  --color-9: #0f2a50;
  --color-10: rgba(0,229,255,0.12);
  --color-11: rgba(0,229,255,0.06);
  --color-12: #00ffea;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;

  --radius-1: 6px;
  --radius-2: 12px;
  --radius-3: 20px;
  --radius-4: 40px;

  --shadow-1: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-2: 0 8px 40px rgba(0,0,0,0.5);
  --shadow-3: 0 0 30px rgba(0,229,255,0.25);
  --shadow-4: 0 0 60px rgba(0,229,255,0.15);

  --font-1: 'Playfair Display', serif;
  --font-2: 'Inter', sans-serif;

  --transition-1: 0.3s ease;
  --transition-2: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html, body {
  max-width: 100vw;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-1);
  color: var(--color-6);
  font-family: var(--font-2);
  font-size: 16px;
  line-height: 1.7;
}

/* Utilities */
.btn {
  border-radius: var(--radius-4);
  cursor: pointer;
  display: inline-block;
  font-family: var(--font-2);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.75rem 2rem;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  transition: all var(--transition-1);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-4) 0%, var(--color-12) 100%);
  border: none;
  box-shadow: 0 0 20px rgba(0,229,255,0.4), 0 4px 15px rgba(0,0,0,0.3);
  color: var(--color-1);
}

.btn--primary:hover {
  box-shadow: 0 0 40px rgba(0,229,255,0.7), 0 8px 25px rgba(0,0,0,0.4);
  color: var(--color-1);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  border: 2px solid var(--color-4);
  color: var(--color-4);
}

.btn--outline:hover {
  background: var(--color-4);
  box-shadow: var(--shadow-3);
  color: var(--color-1);
  transform: translateY(-2px);
}

.card {
  background: linear-gradient(135deg, var(--color-9) 0%, var(--color-8) 100%);
  border: 1px solid rgba(0,229,255,0.15);
  border-radius: var(--radius-2);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  transition: all var(--transition-1);
}

.card:hover {
  border-color: rgba(0,229,255,0.4);
  box-shadow: var(--shadow-3);
  transform: translateY(-4px);
}

/* Section titles */
.section__title {
  color: var(--color-6);
  font-family: var(--font-1);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--space-4);
  position: relative;
}

.section__title::after {
  background: linear-gradient(90deg, var(--color-4), transparent);
  bottom: -10px;
  content: '';
  display: block;
  height: 3px;
  left: 0;
  position: absolute;
  width: 80px;
}

.section__title--center {
  text-align: center;
}

.section__title--center::after {
  left: 50%;
  transform: translateX(-50%);
}

/* Images */
.content-image {
  border-radius: var(--radius-2);
  margin: var(--space-3) 0;
  overflow: hidden;
}

.content-image img {
  border-radius: var(--radius-2);
  display: block;
  height: auto;
  max-width: 100%;
  width: 100%;
}

.content-image.portrait img {
  margin: 0 auto;
  max-width: 480px;
  width: auto;
}

/* Lists */
.checklist {
  list-style: none;
  padding: 0;
}

.checklist li {
  border-bottom: 1px solid rgba(255,255,255,0.05);
  color: var(--color-7);
  padding: 0.5rem 0 0.5rem 1.8rem;
  position: relative;
}

.checklist li::before {
  color: var(--color-4);
  content: '✓';
  font-weight: 700;
  left: 0;
  position: absolute;
}

.highlight-list {
  list-style: none;
  padding: 0;
}

.highlight-list li {
  border-left: 3px solid var(--color-4);
  color: var(--color-7);
  margin-bottom: var(--space-2);
  padding: 0.6rem 0 0.6rem 1.2rem;
}

.definition-list {
  border-radius: var(--radius-2);
  overflow: hidden;
}

.definition-list dt {
  background: var(--color-10);
  color: var(--color-4);
  font-weight: 700;
  padding: 0.6rem 1rem;
}

.definition-list dd {
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: var(--color-7);
  margin: 0;
  padding: 0.6rem 1rem 0.8rem;
}

/* Table */
.table-responsive {
  border-radius: var(--radius-2);
  overflow: auto;
}

.feature-table {
  border-collapse: collapse;
  min-width: 100%;
  width: 100%;
}

.feature-table thead tr {
  background: linear-gradient(135deg, var(--color-4), var(--color-5));
}

.feature-table thead th {
  color: var(--color-1);
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 1rem 1.2rem;
  text-align: left;
  text-transform: uppercase;
}

.feature-table tbody tr {
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background var(--transition-1);
}

.feature-table tbody tr:nth-child(even) {
  background: rgba(0,229,255,0.04);
}

.feature-table tbody tr:hover {
  background: var(--color-10);
}

.feature-table tbody td {
  color: var(--color-7);
  padding: 0.9rem 1.2rem;
}

.feature-table tbody td:first-child {
  color: var(--color-6);
  font-weight: 600;
}

/* Accordion */
.accordion__item {
  border: 1px solid rgba(0,229,255,0.15);
  border-radius: var(--radius-2);
  margin-bottom: var(--space-2);
  overflow: hidden;
  transition: border-color var(--transition-1);
}

.accordion__item:hover {
  border-color: rgba(0,229,255,0.35);
}

.accordion__header {
  background: var(--color-9);
  color: var(--color-6);
  cursor: pointer;
  font-family: var(--font-2);
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  padding: 1.2rem 4rem 1.2rem 1.5rem;
  position: relative;
  transition: all var(--transition-1);
  user-select: none;
}

.accordion__header:hover {
  background: var(--color-8);
  color: var(--color-4);
}

.accordion__header::after {
  color: var(--color-4);
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  transition: transform var(--transition-1);
}

.accordion__item--open .accordion__header::after {
  transform: translateY(-50%) rotate(45deg);
}

.accordion__body {
  background: rgba(0,0,0,0.2);
  display: none;
  padding: 1.2rem 1.5rem;
}

.accordion__item--open .accordion__body {
  display: block;
}

.accordion__body p {
  color: var(--color-7);
  margin: 0;
}

/* Wrapper pattern */
.wrapper {
  margin: 0 auto;
  max-width: 1280px;
  padding: 0 var(--space-3);
  width: 100%;
}

.wrapper--narrow {
  max-width: 900px;
}

p {
  color: var(--color-7);
  line-height: 1.8;
  margin-bottom: var(--space-2);
}

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

a {
  color: var(--color-4);
  text-decoration: none;
  transition: color var(--transition-1);
}

a:hover {
  color: var(--color-12);
}

strong {
  color: var(--color-6);
}

/* === LAYOUT STYLES === */
.site-header {
  background: rgba(10, 10, 26, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,229,255,0.15);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.site-header__inner {
  align-items: center;
  display: flex;
  gap: var(--space-3);
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1280px;
  min-height: 70px;
  padding: 0 var(--space-3);
}

.logo {
  flex-shrink: 0;
  z-index: 10;
}

.hamburger {
  background: transparent;
  border: none;
  cursor: pointer;
  display: none;
  flex-direction: column;
  flex-shrink: 0;
  gap: 5px;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  padding: 8px;
  z-index: 10;
}

.hamburger span {
  background: var(--color-4);
  border-radius: 2px;
  display: block;
  height: 2px;
  transition: all var(--transition-1);
  width: 24px;
}

.hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.main-nav {
  align-items: center;
  display: flex;
  flex: 1;
  justify-content: flex-end;
}

.main-nav__list {
  align-items: center;
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav__list a {
  color: var(--color-7);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  padding: 0.4rem 0;
  text-transform: uppercase;
  transition: color var(--transition-1);
}

.main-nav__list a:hover {
  color: var(--color-4);
}

.header-cta {
  background: linear-gradient(135deg, var(--color-4) 0%, var(--color-12) 100%);
  border: none;
  border-radius: var(--radius-4);
  box-shadow: 0 0 20px rgba(0,229,255,0.35);
  color: var(--color-1);
  cursor: pointer;
  display: inline-block;
  flex-shrink: 0;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  max-width: 200px;
  overflow: hidden;
  padding: 0.65rem 1.5rem;
  text-decoration: none;
  text-overflow: ellipsis;
  text-transform: uppercase;
  transition: all var(--transition-1);
  white-space: nowrap;
}

.header-cta:hover {
  box-shadow: 0 0 40px rgba(0,229,255,0.6);
  color: var(--color-1);
  transform: translateY(-2px);
}

/* Site footer */
.site-footer {
  background: var(--color-2);
  border-top: 1px solid rgba(0,229,255,0.12);
  margin-top: var(--space-7);
  padding: var(--space-5) 0;
}

.site-footer__inner {
  margin: 0 auto;
  max-width: 1280px;
  padding: 0 var(--space-3);
  text-align: center;
}

.site-footer__logo {
  color: var(--color-4);
  font-size: 1.3rem;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
  text-transform: uppercase;
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: center;
  margin-bottom: var(--space-3);
}

.site-footer__legal a {
  color: rgba(255,255,255,0.55);
  font-size: 0.8rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-1);
}

.site-footer__legal a:hover {
  color: var(--color-4);
}

.site-footer p {
  color: rgba(255,255,255,0.4);
  font-size: 0.8rem;
  margin-bottom: var(--space-1);
}

/* Media queries — header/footer/nav */
@media (max-width: 767px) {
  .hamburger {
    display: flex;
  }

  .main-nav {
    background: rgba(10,10,26,0.98);
    border-bottom: 1px solid rgba(0,229,255,0.15);
    display: none;
    left: 0;
    padding: var(--space-3);
    position: absolute;
    right: 0;
    top: 70px;
  }

  .main-nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav__list {
    flex-direction: column;
    gap: var(--space-2);
    width: 100%;
  }

  .site-header__inner {
    flex-wrap: wrap;
    padding-bottom: var(--space-2);
    padding-top: var(--space-2);
  }

  .header-cta {
    max-width: 100%;
    order: unset;
    width: 100%;
  }
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }

  .main-nav {
    display: flex;
  }
}

@media (max-width: 767px) {
  .hamburger {
    display: flex;
  }

  .main-nav {
    background: rgba(10,10,26,0.98);
    border-bottom: 1px solid rgba(0,229,255,0.15);
    display: none;
    left: 0;
    padding: var(--space-3);
    position: absolute;
    right: 0;
    top: 70px;
  }

  .main-nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav__list {
    flex-direction: column;
    gap: var(--space-2);
    width: 100%;
  }

  .site-header__inner {
    flex-wrap: wrap;
    padding-bottom: var(--space-2);
    padding-top: var(--space-2);
  }

  .header-cta {
    max-width: 100%;
    order: unset;
    width: 100%;
  }
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }

  .main-nav {
    display: flex;
  }
}