:root {
  --color-bg: #f4f7fb;
  --color-surface: #ffffff;
  --color-border: #d9e2ec;
  --color-text: #1f2a37;
  --color-muted: #6b7a90;
  --color-primary: #2f6da1;
  --color-primary-dark: #255781;
  --color-primary-soft: #e2edf7;
  --color-accent: #7caf4a;
  --color-accent-soft: #e6f2d8;
  --color-accent-dark: #4f6f2a;
  --color-header-bg: rgba(255, 255, 255, 0.9);
  --color-brand-shadow: 0 2px 0 rgba(255, 255, 255, 0.6);
  --color-toggle-bg: #ffffff;
  --color-toggle-border: #d6e0ec;
  --color-toggle-shadow: 0 12px 20px rgba(31, 42, 55, 0.12);
  --color-input-bg: #ffffff;
  --color-hero-eyebrow: #1f2a37;
  --color-hero-title: #0f1d2d;
  --color-hero-subtitle: #3f4d61;
  --color-lilac-dark: #5b3f8b;
  --color-burcu: #3ecece;
  --shadow-soft: 0 10px 24px rgba(31, 42, 55, 0.08);
}

[data-theme="dark"] {
  --color-bg: #0f1722;
  --color-surface: #162334;
  --color-border: #27384c;
  --color-text: #e6edf6;
  --color-muted: #9db0c7;
  --color-primary: #5aa4e6;
  --color-primary-dark: #7ab8ef;
  --color-primary-soft: rgba(90, 164, 230, 0.18);
  --color-accent: #98c86a;
  --color-accent-soft: rgba(152, 200, 106, 0.18);
  --color-accent-dark: #b1dd85;
  --color-header-bg: rgba(15, 23, 34, 0.92);
  --color-brand-shadow: 0 2px 0 rgba(4, 10, 20, 0.6);
  --color-toggle-bg: #1c2b3f;
  --color-toggle-border: #2b3f58;
  --color-toggle-shadow: 0 12px 20px rgba(5, 10, 20, 0.4);
  --color-input-bg: #dde7e9;
  --color-hero-eyebrow: #1f2a37;
  --color-hero-title: #0f1d2d;
  --color-hero-subtitle: #3f4d61;
  --color-lilac-dark: #c7abf4;
  --color-burcu: #4de1e1;
  --shadow-soft: 0 16px 30px rgba(4, 10, 20, 0.6);
}

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

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

body.has-legal-disclaimer {
  padding-bottom: 140px;
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-header-bg);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 16px rgba(31, 42, 55, 0.06);
  transition: transform 0.3s ease-in-out;
  will-change: transform;
}

.navbar-visible {
  transform: translateY(0);
}

.navbar-hidden {
  transform: translateY(-100%);
}

.site-nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
  display: grid;
  gap: 0.5rem;
}

.site-nav__top {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
}

.site-nav__brand {
  font-weight: 800;
  font-size: 2.2rem;
  color: var(--color-primary-dark);
  letter-spacing: 0.3px;
  text-shadow: var(--color-brand-shadow);
  justify-self: center;
  position: relative;
}

.site-nav__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
}

.site-nav__link {
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  color: var(--color-text);
  font-weight: 600;
  position: relative;
}

.flash-messages {
  max-width: 1100px;
  margin: 1rem auto 0;
  padding: 0 1rem;
  display: grid;
  gap: 0.5rem;
}

.flash-message {
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
}

.site-layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1rem 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
}

.button--primary {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-accent)
  );
  border: none;
  color: #fff;
}

.button--ghost {
  background: linear-gradient(
    135deg,
    var(--color-lilac-dark),
    var(--color-burcu)
  );
  color: #fff;
  border: none;
}

.input-field,
textarea,
select {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  font: inherit;
  background: var(--color-input-bg, #ffffff);
}

.input-field:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--color-primary-soft);
  border-color: var(--color-primary);
}

.comment-form {
  display: grid;
  gap: 0.5rem;
}

.comment-form__field {
  margin-bottom: 0.75rem;
}

.char-counter {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 0.75rem;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.4fr);
  gap: 2rem;
  padding: 1.5rem;
  border-radius: 20px;
  background-color: #e7f2f7;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.home-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}

.home-hero__content {
  position: relative;
  width: max-content;
  z-index: 1;
}

.home-hero__eyebrow {
  margin: 0 0 0.5rem;
  color: var(--color-hero-eyebrow);
  font-weight: 600;
}

.home-hero h1 {
  margin: 0 0 0.75rem;
  font-size: 2.2rem;
  color: var(--color-hero-title);
}

.home-hero__subtitle {
  margin: 0 0 1.5rem;
  color: var(--color-hero-subtitle);
}

.home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.post-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 2rem;
}

.post-list__title {
  margin: 0 0 0.35rem;
}

.post-list__item {
  padding: 1.25rem;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.post-list__meta {
  margin: 0.5rem 0 0;
  color: var(--color-muted);
}

/* Dropdown Menu - Critical for FOUC */
.nav-dropdown {
  position: relative;
  display: inline-block;
}

.nav-dropdown__content {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  opacity: 0;
  visibility: hidden;
  z-index: 1100;
}

.nav-dropdown:hover .nav-dropdown__content,
.nav-dropdown:focus-within .nav-dropdown__content,
.nav-dropdown.is-open .nav-dropdown__content {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(5px);
}

/* Theme Toggle - Critical for FOUC */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem;
  border-radius: 999px;
  border: 2px solid var(--color-toggle-border);
  background: var(--color-toggle-bg);
  cursor: pointer;
}

.theme-toggle__icon--dark {
  display: none;
}

[data-theme="dark"] .theme-toggle__icon--light {
  display: none;
}

[data-theme="dark"] .theme-toggle__icon--dark {
  display: inline-block;
}

@media (max-width: 1024px) {
  .site-layout {
    grid-template-columns: minmax(0, 1fr) 240px;
  }
}

@media (max-width: 900px) {
  .site-layout {
    grid-template-columns: 1fr;
  }

  .site-nav__top {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .site-nav__actions {
    position: absolute;
    right: 16px;
  }

  .home-hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .site-header {
    padding: 0.5rem 0;
    z-index: 1200;
  }

  .site-nav {
    padding: 0;
  }

  .site-nav__links {
    gap: 0.5rem;
  }

  .site-header.navbar-at-top {
    background: var(--color-surface);
  }

  .site-nav__brand {
    font-size: 1.9rem;
  }

  .site-nav__link {
    font-size: 0.92rem;
  }

  .home-hero__bg {
    object-position: bottom;
  }

  .home-hero__content {
    width: 100%;
  }

  .home-hero__subtitle {
    font-weight: 700;
  }
}