/* Theme variables & dark mode overrides */

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f8f8;
  --text-primary: #000000;
  --text-secondary: #444444;
  --text-muted: #666666;
  --border-color: #cecece;
  --nav-gradient-start: #ffffff;
  --overlay-bg: #ffffff;
  --transition-speed: 0.3s;
}

.dark-mode {
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --text-primary: #f5f5f5;
  --text-secondary: #cccccc;
  --text-muted: #999999;
  --border-color: #333333;
  --nav-gradient-start: #0a0a0a;
  --overlay-bg: #0a0a0a;
}

/* Smooth theme transitions */
body,
.fixed-nav,
.section,
.footer,
.nav-bg-white,
.project-item-image-overlay,
.footer-flex-container,
.slider,
.slider:before {
  transition: background-color var(--transition-speed) ease,
              color var(--transition-speed) ease,
              border-color var(--transition-speed) ease;
}

/* ── Nav layout ── */
.container.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.container.nav-container .nav-menu {
  margin-left: auto;
}

.container.nav-container .menu-button {
  margin-left: 0.5rem;
}

.theme-toggle-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  z-index: 2;
}

.theme-icon {
  display: block;
  opacity: 0.5;
  transition: opacity var(--transition-speed) ease;
  flex-shrink: 0;
  color: var(--text-primary);
}

.icon-sun { opacity: 1; }
.icon-moon { opacity: 0.35; }

.dark-mode .icon-sun { opacity: 0.35; }
.dark-mode .icon-moon { opacity: 1; }

.switch {
  margin-top: 0 !important;
}

/* ── Dark mode base ── */
/* Applied to <html> pre-paint (anti-FOUC) and mirrored onto <body>,
   which otherwise carries a hard-coded white background. */
.dark-mode,
.dark-mode body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.dark-mode a {
  color: var(--text-primary);
}

/* Nav */
.dark-mode .fixed-nav {
  background-color: transparent;
}

.dark-mode .nav-bg-white {
  background-image: linear-gradient(
    180deg,
    var(--nav-gradient-start),
    hsla(0, 0%, 4%, 0.88) 21%,
    hsla(0, 0%, 4%, 0) 91%
  );
}

.dark-mode .nav-link-text {
  color: var(--text-primary);
}

.dark-mode .link-underline {
  background-color: var(--text-primary);
}

.dark-mode .menu-button.w--open {
  border-color: #444;
  background-color: #1a1a1a;
  color: #fff;
}

/* Toggle slider in dark mode */
.dark-mode .slider {
  background-color: #555;
}

.dark-mode input:checked + .slider {
  background-color: #888;
}

.dark-mode .slider:before {
  background-color: var(--bg-primary);
}

.dark-mode input:checked + .slider:before {
  background-color: #fff;
}

/* Hero */
.dark-mode .section-hero,
.dark-mode .main-hero-section-content {
  background-color: var(--bg-primary);
}

.dark-mode .hero-text:not(.white-text) {
  color: var(--text-primary);
}

.dark-mode .hero-description.big {
  color: var(--text-secondary);
}

/* Sections */
.dark-mode .section {
  background-color: var(--bg-primary);
}

.dark-mode .background-black {
  background-color: var(--bg-secondary);
}

/* Projects */
.dark-mode .project-item-image-overlay {
  background-color: var(--overlay-bg);
}

.dark-mode .project-item-title {
  color: var(--text-primary);
}

.dark-mode .project-item h6 {
  color: var(--text-muted);
}

.dark-mode .project-item-arrow {
  filter: invert(1);
}

.project-item h6 {
  font-size: 0.75em;
  line-height: 1.5;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 0.5em;
}

.project-collection-list {
  row-gap: 2.5em !important;
}

.heading-container h3 {
  margin-bottom: 1.5em;
}

/* Footer */
.dark-mode .footer {
  background-color: var(--bg-primary);
}

.dark-mode .footer-flex-container {
  border-top-color: var(--border-color);
}

.dark-mode .footer-link {
  color: var(--text-secondary);
}

.dark-mode h4 {
  color: var(--text-secondary);
}

.email-link {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--transition-speed) ease;
}

.email-link:hover {
  opacity: 0.7;
  text-decoration: none;
}

.footer-flex-container {
  align-items: center;
}

.footer-flex-first {
  gap: 1.5rem;
  align-items: center;
}

.content.horizontal {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Cursor */
.dark-mode .cursor-big-circle,
.dark-mode .cursor-small-circle {
  background-color: hsla(0, 0%, 30%, 0.5);
}

.dark-mode .cursor-arrow {
  filter: invert(1);
}

/* Mobile nav menu in dark mode */
@media screen and (max-width: 767px) {
  .dark-mode .nav-menu {
    background-color: var(--bg-primary);
  }

  .dark-mode .nav-link {
    border-bottom-color: var(--border-color);
  }
}
