/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ── Sections ── */
.section {
  padding: var(--section-pad-y) 0;
  position: relative;
}

.section--dark {
  background: var(--color-bg);
}

.section--elevated {
  background: var(--color-bg-elevated);
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-base) var(--ease-out),
              padding var(--duration-base) var(--ease-out);
}

.nav--scrolled {
  padding: var(--space-2) 0;
  border-bottom-color: var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__logo img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent);
}

.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  letter-spacing: 0.05em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color var(--duration-fast) var(--ease-out);
}
.nav__link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav__cta {
  margin-left: var(--space-4);
}

/* ── Mobile Nav Toggle ── */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: all var(--duration-base) var(--ease-out);
}

@media (max-width: 768px) {
  .nav__toggle { display: block; }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-8);
    background: var(--color-bg-elevated);
    border-left: 1px solid var(--color-border);
    transition: right var(--duration-slow) var(--ease-out);
  }

  .nav__links--open {
    right: 0;
  }

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

  .nav__cta {
    margin-left: 0;
  }
}

/* ── Grid Utilities ── */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--4,
  .grid--3,
  .grid--2 { grid-template-columns: 1fr; }
}

/* ── Hero Layout ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--space-16);
}

/* ── Footer ── */
.footer {
  padding: var(--space-12) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

@media (max-width: 640px) {
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .footer__links {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
  }
}