/* 
  ElevateLiving Main CSS - Global Design Tokens & Layout 
  Optimized for Mobile-First visual commerce.
*/

/* Task 2: Font stack handled via preconnect in HTML, fallback here */
:root {
  /* Colors */
  --c-dark-obsidian: #0A0A0A;
  --c-gold-metallic: #C9A44A;
  --c-gold-light: #E8C97A;
  --c-paper-cream: #F5F2ED;
  --c-white: #FFFFFF;
  --c-muted-text: #666666;
  --c-border-subtle: rgba(26, 26, 26, 0.1);
  --c-accent: var(--c-gold-metallic);
  
  /* Typography */
  --f-sans: 'Inter', -apple-system, blinkmacsystemfont, 'Segoe UI', roboto, sans-serif;
  --f-serif: 'Playfair Display', georgia, serif;
  --f-display: 'Montserrat', sans-serif;
  
  /* Spacing */
  --safe-area: 6vw;
  --section-gap: clamp(40px, 8vh, 80px);
  
  /* Radii */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 32px;
}

/* Base Reset */
* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--f-sans);
  background-color: var(--c-paper-cream);
  color: var(--c-dark-obsidian);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--safe-area);
}

/* Section Spacing Helpers (Task 1) */
.mt-section { margin-top: var(--section-gap); }
.pt-section { padding-top: var(--section-gap); }
.flex-center { display: flex; align-items: center; justify-content: center; }
.text-center { text-align: center; }

/* Global Navigation (Task 3) */
header.site-header {
  background: var(--c-white);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
}

header.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--f-display);
  font-size: 1.25rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--c-dark-obsidian);
  letter-spacing: -0.5px;
  z-index: 1100;
}

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

.nav-links a {
  text-decoration: none;
  color: var(--c-dark-obsidian);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--c-accent);
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  z-index: 1100;
}

.mobile-nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-dark-obsidian);
  transition: 0.3s;
}

@media (max-width: 768px) {
  .mobile-nav-toggle { display: flex; }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: var(--c-white);
    flex-direction: column;
    padding: 6rem 2rem;
    box-shadow: -10px 0 30px rgba(0,0,0,0.05);
    transition: 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  }
  
  .nav-links.active { right: 0; }
  
  header.site-header.nav-open .mobile-nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  header.site-header.nav-open .mobile-nav-toggle span:nth-child(2) { opacity: 0; }
  header.site-header.nav-open .mobile-nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* Utility helpers (Task 1: Removed inline styles) */
img {
    max-width: 100%;
    height: auto;
    display: block;
    image-rendering: -webkit-optimize-contrast;
}

.text-serif { font-family: var(--f-serif); }
.text-upper { text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.7rem; }
.text-accent { color: var(--c-accent); }
.text-bold { font-weight: 700; }
.text-white { color: var(--c-white); }
.hidden { display: none; }

.border-top { border-top: 1px solid var(--c-border-subtle); }
.container-narrow { max-width: 800px; margin: 0 auto; padding: 0 2rem; }
.hero-sub { font-size: 1.25rem; opacity: 0.9; margin-bottom: 2rem; }
.flex-between { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 2rem; }
.section-title { font-size: 2.5rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.nav-links-footer { display: flex; justify-content: center; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.5rem; }
.nav-links-footer a {
    text-decoration: none;
    color: var(--c-dark-obsidian);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    background: var(--c-white);
    border: 1px solid var(--c-border-subtle);
    border-radius: 99px;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.nav-links-footer a:hover {
    background: var(--c-dark-obsidian);
    color: var(--c-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.footer-credit { margin-top: 2rem; opacity: 0.4; font-size: 0.75rem; }

.home-hero {
    padding: 8rem 0;
    background: linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.55)), url('/assets/img/hero-branded-placeholder.webp');
    background-color: var(--c-dark-obsidian);
    background-size: cover;
    background-position: center;
    color: var(--c-white);
    text-align: center;
    border-radius: var(--radius-lg);
    margin-top: 2rem;
}

.home-hero h1 {
    text-shadow: 0 2px 20px rgba(0,0,0,0.4);
    margin-bottom: 1.5rem;
}

.home-hero .hero-sub {
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Pinterest-style Grid and Cards */
.hero-badges {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.badge-trust {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--c-gold-metallic);
    display: flex;
    align-items: center;
}

.cluster-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.featured-card {
    grid-column: span 2;
}

.article-card {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    background: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 40px 80px rgba(0,0,0,0.12);
}

.featured-card {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
}

@media (max-width: 768px) {
    .featured-card {
        grid-template-columns: 1fr;
    }
}

.new-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: linear-gradient(135deg, var(--c-gold-metallic), #f5e4c3);
    color: var(--c-dark-obsidian);
    padding: 0.4rem 1rem;
    border-radius: 99px;
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 10;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.article-card img {
    width: 100%;
    height: 100%;
    min-height: 240px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.featured-card img {
    height: 100%;
    min-height: 400px;
}

.article-card-body {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.article-excerpt {
    font-size: 0.95rem;
    color: #666;
    margin-top: 0.75rem;
    line-height: 1.5;
}

/* More Inspiration Grid */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* Newsletter Section upgrade */
.newsletter-card {
    background: linear-gradient(to right, #111, #222);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
    border-radius: 32px;
    margin: 6rem 0;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    max-width: 500px;
    margin: 2rem auto 0;
}

.newsletter-form input {
    flex-grow: 1;
    padding: 1rem 1.5rem;
    border-radius: 99px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 1rem;
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 768px) {
    .cluster-grid, .grid-3 {
        grid-template-columns: 1fr;
    }
    .featured-card {
        grid-column: span 1;
    }
    .home-hero h1 {
        font-size: 3rem;
    }
    .newsletter-form {
        flex-direction: column;
    }
}