/* ============================================
   Carolina's Digital Garden — Global Styles
   ============================================ */

:root {
  --color-bg: #F6F6F4;
  --color-text: #000000;
  --color-modal-bg: rgba(255, 255, 255, 0.95);
  --color-overlay: rgba(0, 0, 0, 0.08);
  --color-border: #d0d0d0;

  --font-display: 'Jacquarda Bastarda 9', serif;
  --font-body: 'Inter', sans-serif;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-y: scroll;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

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

a:hover {
  opacity: 0.6;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---- Header ---- */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: var(--color-bg);
}

.header__title {
  font-family: var(--font-display);
  font-size: 1rem;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.header__title:hover {
  opacity: 1;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav-separator {
  font-weight: 300;
  opacity: 0.4;
}

.nav-btn {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.95rem;
  padding: 0.25rem 0;
  position: relative;
  transition: opacity 0.2s ease;
}

.nav-btn:hover {
  opacity: 0.6;
}

.nav-btn--active {
  font-family: var(--font-display);
  font-size: 1rem;
}

/* ---- Main Content ---- */
.main {
  flex: 1;
  padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
  min-height: 60vh;
}

.gallery-loading,
.gallery-empty {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 40vh;
  font-weight: 300;
  font-size: 0.9rem;
  opacity: 0.5;
}

/* ---- Categories (fixed bottom) ---- */
.categories {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
  display: flex;
  align-items: baseline;
  gap: 0;
  flex-wrap: wrap;
  font-size: 1.5rem;
  z-index: 5;
  pointer-events: none;
}

.category-btn {
  pointer-events: all;
}

.category-btn + .category-separator + .category-btn {
  margin-left: 0.3rem;
}

.category-btn {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1.5rem;
  padding: 0;
  transition: opacity 0.2s ease;
}

.category-btn:hover {
  opacity: 0.6;
}

.category-btn--active {
  font-family: var(--font-display);
}

.category-separator {
  font-weight: 300;
  opacity: 0.5;
  user-select: none;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .header {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .header__title {
    font-size: 0.85rem;
  }

  .main {
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
  }

  .categories {
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
    font-size: 1.1rem;
  }

  .category-btn {
    font-size: 1.1rem;
  }
}