/* ===== CSS Variables ===== */
:root {
  --clr-primary: #e67e22;
  --clr-primary-dark: #d35400;
  --clr-accent: #27ae60;
  --clr-bg: #fafafa;
  --clr-surface: #ffffff;
  --clr-text: #2c3e50;
  --clr-text-light: #7f8c8d;
  --clr-border: #ecf0f1;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,.08);
  --transition: .25s ease;
  --max-width: 1140px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.6;
}
img { max-width: 100%; display: block; border-radius: var(--radius); }
a { color: var(--clr-primary); text-decoration: none; }

/* ===== Utility ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1rem; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .65rem 1.4rem;
  border: none; border-radius: var(--radius);
  font-size: .95rem; font-weight: 600;
  cursor: pointer; transition: background var(--transition), transform var(--transition);
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--clr-primary); color: #fff; }
.btn--primary:hover { background: var(--clr-primary-dark); }
.btn--accent { background: var(--clr-accent); color: #fff; }
.btn--accent:hover { background: #219a52; }

/* ===== Header ===== */
.header {
  background: var(--clr-surface); border-bottom: 1px solid var(--clr-border);
  position: sticky; top: 0; z-index: 50;
}
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.header__logo { font-size: 1.35rem; font-weight: 700; }
.header__logo span { background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
  padding: 3rem 0 2rem;
  text-align: center;
}
.hero__title { font-size: 1.8rem; margin-bottom: 1.2rem; color: var(--clr-text); }

/* Search bar */
.search-bar { display: flex; max-width: 540px; margin: 0 auto 1.5rem; gap: .5rem; }
.search-bar__input {
  flex: 1; padding: .75rem 1rem;
  border: 2px solid var(--clr-border); border-radius: var(--radius);
  font-size: 1rem; outline: none; transition: border var(--transition);
}
.search-bar__input:focus { border-color: var(--clr-primary); }

/* Categories */
.categories { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: center; }
.categories__pill {
  padding: .4rem 1rem; border-radius: 999px;
  background: var(--clr-surface); border: 1px solid var(--clr-border);
  font-size: .85rem; cursor: pointer; transition: all var(--transition);
}
.categories__pill:hover,
.categories__pill--active {
  background: var(--clr-primary); color: #fff; border-color: var(--clr-primary);
}

/* ===== Grid ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
  padding: 2rem 0;
}

/* Card */
.card {
  background: var(--clr-surface); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  cursor: pointer; transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,.12); }
.card__img { width: 100%; height: 200px; object-fit: cover; border-radius: 0; }
.card__body { padding: 1rem; }
.card__title { font-size: 1.05rem; font-weight: 600; margin-bottom: .3rem; }
.card__meta { font-size: .82rem; color: var(--clr-text-light); }

/* ===== Loader ===== */
.loader { text-align: center; padding: 2rem; }
.loader__spinner {
  display: inline-block; width: 40px; height: 40px;
  border: 4px solid var(--clr-border); border-top-color: var(--clr-primary);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.no-results { text-align: center; padding: 2rem; color: var(--clr-text-light); font-size: 1.1rem; }

/* ===== Modal ===== */
.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; }
.modal[hidden] { display: none !important; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.55); }
.modal__content {
  position: relative; background: var(--clr-surface); border-radius: var(--radius);
  max-width: 680px; width: 92%; max-height: 88vh; overflow-y: auto;
  padding: 2rem; z-index: 1;
}
.modal__close {
  position: absolute; top: .75rem; right: .75rem;
  background: none; border: none; font-size: 1.8rem; cursor: pointer; color: var(--clr-text-light);
  line-height: 1;
}
.modal__close:hover { color: var(--clr-text); }
.modal__body h2 { margin-bottom: .5rem; }
.modal__body img { margin-bottom: 1rem; border-radius: var(--radius); }
.modal__body .tags { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1rem; }
.modal__body .tag {
  padding: .25rem .75rem; border-radius: 999px;
  background: #ffecd2; font-size: .8rem; font-weight: 600; color: var(--clr-primary-dark);
}
.modal__body h3 { margin: 1.2rem 0 .5rem; font-size: 1.1rem; }
.modal__body ul { padding-left: 1.4rem; margin-bottom: 1rem; }
.modal__body ul li { margin-bottom: .25rem; }
.modal__body p { margin-bottom: .75rem; white-space: pre-line; }
.modal__body .video-link {
  display: inline-flex; align-items: center; gap: .3rem;
  margin-top: .5rem; font-weight: 600; color: var(--clr-primary);
}

/* ===== Footer ===== */
.footer { text-align: center; padding: 2rem 0; color: var(--clr-text-light); font-size: .85rem; border-top: 1px solid var(--clr-border); margin-top: 2rem; }

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .hero__title { font-size: 1.35rem; }
  .search-bar { flex-direction: column; }
  .grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .modal__content { padding: 1.25rem; }
}
@media (max-width: 380px) {
  .grid { grid-template-columns: 1fr; }
}