/* Layout & Structure */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(231, 225, 214, 0.6);
  transition: all var(--transition-fast);
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-logo span {
  display: inline-block;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--text-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-main);
  background: var(--bg-card);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.nav-cta-btn:hover {
  background: var(--text-primary);
  color: var(--bg-main);
  border-color: var(--text-primary);
  transform: translateY(-1px);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}

.mobile-nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  transition: all var(--transition-fast);
}

/* Main Page Container */
.main-wrapper {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 48px 24px 80px 24px;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 64px;
  align-items: start;
}

/* Left Sticky Profile Column */
.sidebar-profile {
  position: sticky;
  top: calc(var(--header-height) + 32px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* Right Content Stream Column */
.content-stream {
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-width: 0; /* Prevents overflow in flex children */
}

.section-divider {
  border: none;
  border-top: 1px solid var(--border-main);
  margin: 12px 0 8px 0;
  width: 100%;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .sidebar-profile {
    position: static;
    top: auto;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-main);
  }

  .nav-menu {
    display: none;
  }

  .mobile-nav-toggle {
    display: flex;
  }
}

@media (max-width: 640px) {
  .main-wrapper {
    padding: 24px 16px 60px 16px;
  }

  .header-container {
    padding: 0 16px;
  }

  .nav-cta-btn {
    display: none;
  }

  .header-actions {
    gap: 8px;
  }
}