/* ============================================================
   WESTSIDER — Design System
   Apple-inspired West LA lifestyle blog
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ---------- Custom Properties ---------- */
:root {
  /* Colors */
  --bg:             #ffffff;
  --bg-secondary:   #f5f5f7;
  --surface:        rgba(255, 255, 255, 0.72);
  --text:           #1d1d1f;
  --text-2:         #6e6e73;
  --text-3:         #86868b;
  --accent-1:       #5e5ce6;
  --accent-2:       #32ade6;
  --accent-3:       #bf5af2;
  --border:         rgba(0, 0, 0, 0.08);
  --shadow:         rgba(0, 0, 0, 0.12);
  --shadow-lg:      rgba(0, 0, 0, 0.2);

  /* Gradients */
  --gradient-hero:   linear-gradient(135deg, #1a0533 0%, #0a2463 50%, #0d4f4f 100%);
  --gradient-accent: linear-gradient(90deg, #5e5ce6, #bf5af2, #32ade6);

  /* Typography */
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Radii */
  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --bg:           #000000;
  --bg-secondary: #1c1c1e;
  --surface:      rgba(28, 28, 30, 0.72);
  --text:         #f5f5f7;
  --text-2:       #98989d;
  --text-3:       #636366;
  --border:       rgba(255, 255, 255, 0.1);
  --shadow:       rgba(0, 0, 0, 0.4);
  --shadow-lg:    rgba(0, 0, 0, 0.6);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  transition: background 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

img, video { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ---------- Layout ---------- */
.container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 5vw, 3rem);
}

.section {
  padding-block: clamp(4rem, 10vw, 8rem);
}

/* ---------- NAVIGATION ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.nav.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 1px 0 var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  gap: 2rem;
}

.nav__logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  flex-shrink: 0;
}

.nav__logo span {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__links a {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-2);
  transition: color 0.2s ease;
}

.nav__links a:hover { color: var(--text); }

.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  transition: background 0.2s ease, color 0.2s ease;
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  color: var(--text);
}

.theme-toggle svg { width: 18px; height: 18px; }

.nav__hamburger {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  flex-direction: column;
  gap: 5px;
  transition: background 0.2s ease;
}

.nav__hamburger:hover { background: var(--bg-secondary); }

.nav__hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav__hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile nav drawer */
.nav__mobile {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out);
  border-top: 1px solid transparent;
}

.nav__mobile.open {
  border-top-color: var(--border);
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  padding: 1rem 1.5rem 1.5rem;
  gap: 0;
}

.nav__mobile-links a {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-2);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s ease;
}

.nav__mobile-links a:last-child { border-bottom: none; }
.nav__mobile-links a:hover { color: var(--text); }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 980px;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1;
  transition: transform 0.2s var(--ease-spring), box-shadow 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}

.btn:hover { transform: scale(1.02); }
.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--text);
  color: var(--bg);
  box-shadow: 0 2px 8px var(--shadow);
}

.btn--primary:hover {
  box-shadow: 0 6px 24px var(--shadow-lg);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn--ghost:hover {
  background: var(--bg-secondary);
  border-color: transparent;
}

.btn--text {
  padding: 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent-1);
  border-radius: 0;
}

.btn--text:hover { opacity: 0.7; transform: none; }

/* ---------- TAGS / BADGES ---------- */
.tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--bg-secondary);
  color: var(--accent-1);
}

.tag--dining     { color: #ff6b35; background: rgba(255, 107, 53, 0.1); }
.tag--outdoors   { color: #30d158; background: rgba(48, 209, 88, 0.1); }
.tag--nightlife  { color: #bf5af2; background: rgba(191, 90, 242, 0.1); }
.tag--arts       { color: #32ade6; background: rgba(50, 173, 230, 0.1); }
.tag--beaches    { color: #5e5ce6; background: rgba(94, 92, 230, 0.1); }
.tag--hidden-gems { color: #ff9f0a; background: rgba(255, 159, 10, 0.1); }

/* ---------- SCROLL REVEAL ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- SECTION HEADERS ---------- */
.section__eyebrow {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-1);
  margin-bottom: 0.75rem;
}

.section__heading {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 1rem;
}

.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1534430480872-3498386e7856?w=1600&q=80&auto=format&fit=crop');
  background-size: cover;
  background-position: center;
  filter: brightness(0.55) saturate(0.9);
  transform: scale(1.04);
  transition: transform 12s ease;
}

.hero.loaded .hero__bg { transform: scale(1); }

.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  opacity: 0.55;
}

.hero__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
  padding-block: 8rem 5rem;
  max-width: 760px;
}

.hero__headline {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: #ffffff;
}

.hero__subtext {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.75);
  max-width: 480px;
  font-weight: 400;
}

.hero__cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.hero__cta .btn--primary {
  background: #ffffff;
  color: #1d1d1f;
}

.hero__cta .btn--ghost {
  border-color: rgba(255, 255, 255, 0.35);
  color: #ffffff;
}

.hero__cta .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.35);
}

.hero__scroll-cue {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.5);
  font-size: 2rem;
  animation: bounce 2s ease-in-out infinite;
  z-index: 1;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ---------- FEATURED SECTION ---------- */
.featured__card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-secondary);
  box-shadow: 0 4px 32px var(--shadow);
  min-height: 420px;
}

.featured__image {
  position: relative;
  overflow: hidden;
}

.featured__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.featured__card:hover .featured__image img {
  transform: scale(1.04);
}

.featured__image .tag {
  position: absolute;
  top: 1.25rem;
  left: 1.25rem;
}

.featured__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 5%, 3.5rem);
  gap: 1rem;
}

.featured__body h3 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text);
}

.featured__body .excerpt {
  color: var(--text-2);
  font-size: 1rem;
  line-height: 1.7;
}

.featured__body .meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.5rem;
}

.read-time {
  font-size: 0.8rem;
  color: var(--text-3);
  font-weight: 500;
}

/* ---------- FILTER TABS ---------- */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-block: 2rem 2.5rem;
}

.filter-tab {
  padding: 0.5rem 1.1rem;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  background: var(--bg-secondary);
  border: 1.5px solid transparent;
  transition: all 0.2s ease;
}

.filter-tab:hover {
  color: var(--text);
  background: var(--bg-secondary);
  border-color: var(--border);
}

.filter-tab.active {
  background: var(--text);
  color: var(--bg);
  border-color: transparent;
}

/* ---------- POST GRID ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

/* ---------- CARDS ---------- */
.card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-secondary);
  box-shadow: 0 2px 16px var(--shadow);
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 20px 60px var(--shadow-lg);
}

.card__image {
  position: relative;
  height: 220px;
  overflow: hidden;
  flex-shrink: 0;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.card:hover .card__image img { transform: scale(1.06); }

.card__image .tag {
  position: absolute;
  bottom: 0.875rem;
  left: 0.875rem;
}

.card__body {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}

.card__title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--text);
}

.card__excerpt {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

/* Hidden cards (filtered out) */
.card[hidden] { display: none; }

/* ---------- NEWSLETTER ---------- */
.newsletter {
  background: var(--bg-secondary);
}

.newsletter__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  gap: 1.25rem;
}

.newsletter__inner p {
  color: var(--text-2);
  font-size: 1.0625rem;
}

.newsletter__form {
  display: flex;
  gap: 0.75rem;
  width: 100%;
  max-width: 460px;
}

.newsletter__form input {
  flex: 1;
  padding: 0.8rem 1.25rem;
  border-radius: 980px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 0.9375rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.newsletter__form input::placeholder { color: var(--text-3); }

.newsletter__form input:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(94, 92, 230, 0.15);
}

.newsletter__disclaimer {
  font-size: 0.78rem;
  color: var(--text-3);
}

.newsletter__success {
  display: none;
  align-items: center;
  gap: 0.5rem;
  color: #30d158;
  font-weight: 500;
  font-size: 0.9375rem;
}

.newsletter__success.show { display: flex; }
.newsletter__form.hide { display: none; }

/* ---------- FOOTER ---------- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding-block: 3rem;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  text-align: center;
}

.footer__brand .nav__logo {
  font-size: 1.3rem;
  margin-bottom: 0.4rem;
}

.footer__tagline {
  font-size: 0.875rem;
  color: var(--text-3);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1.75rem;
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--text-2);
  transition: color 0.2s ease;
}

.footer__links a:hover { color: var(--text); }

.footer__copy {
  font-size: 0.8rem;
  color: var(--text-3);
}

/* ============================================================
   POST PAGE
   ============================================================ */

.post__hero {
  position: relative;
  height: clamp(340px, 55vh, 600px);
  overflow: hidden;
}

.post__hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post__hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 60%);
}

.post__article {
  padding-block: 3rem 5rem;
  max-width: 800px;
}

.post__header {
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post__title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.post__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  font-size: 0.875rem;
  color: var(--text-3);
}

.post__body {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text);
}

.post__body p { margin-bottom: 1.5rem; }

.post__lead {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--text-2);
  font-weight: 400;
  line-height: 1.65;
}

.post__body h2 {
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 3rem;
  margin-bottom: 0.75rem;
}

.pull-quote {
  border-left: 4px solid var(--accent-1);
  padding: 1.25rem 1.5rem 1.25rem 1.75rem;
  margin: 2.5rem 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 300;
  font-style: italic;
  color: var(--text);
  line-height: 1.5;
}

.related {
  background: var(--bg-secondary);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }

  .hero__content { padding-block: 6rem 4rem; }

  .featured__card {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .featured__image { height: 260px; }

  .grid { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: 1fr; }

  .newsletter__form {
    flex-direction: column;
  }

  .newsletter__form .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; }
  .hero__cta .btn { width: 100%; justify-content: center; }
  .post__title { font-size: 2rem; }
}