/* ===== dumbphone.in — Main Stylesheet ===== */
/* Minimal light theme, elegant typography */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,300;1,9..40,400&family=Instrument+Serif:ital@0;1&display=swap');

:root {
  --font-body: 'DM Sans', sans-serif;
  --font-display: 'Instrument Serif', serif;
  --c-bg: #FAFAF8;
  --c-surface: #FFFFFF;
  --c-text: #1A1A1A;
  --c-text-secondary: #6B6B6B;
  --c-text-muted: #9A9A9A;
  --c-border: #E8E8E4;
  --c-border-light: #F0F0EC;
  --c-accent: #2C2C2C;
  --c-accent-soft: #E8E4DE;
  --c-tag-bg: #F4F3F0;
  --c-hover: #F5F5F2;
  --c-link: #3D3D3D;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --max-w: 1200px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-body);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 16px;
  line-height: 1.65;
  min-height: 100vh;
}

a { color: var(--c-link); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-text); }

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

/* ===== NAV ===== */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250,250,248,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border-light);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--c-text);
  letter-spacing: -0.02em;
}
.nav-logo span { font-style: italic; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-text-secondary);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--c-text); }
.nav-hamburger {
  display: none; cursor: pointer; background: none; border: none;
  width: 28px; height: 20px; position: relative; flex-direction: column;
  justify-content: space-between;
}
.nav-hamburger span {
  display: block; height: 2px; width: 100%; background: var(--c-text);
  border-radius: 2px; transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px 60px;
  text-align: center;
}
.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-text-muted);
  margin-bottom: 20px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--c-text);
  margin-bottom: 20px;
}
.hero h1 em { font-style: italic; }
.hero-sub {
  font-size: 1.1rem;
  color: var(--c-text-secondary);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-cta {
  display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center;
}
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 12px 28px;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: 50px;
  transition: all var(--transition);
  cursor: pointer; border: none;
}
.btn-primary {
  background: var(--c-text);
  color: var(--c-bg);
}
.btn-primary:hover { background: #333; color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  color: var(--c-text);
  border: 1.5px solid var(--c-border);
}
.btn-outline:hover { border-color: var(--c-text); background: var(--c-hover); }

/* ===== SECTION COMMON ===== */
.section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 60px 24px;
}
.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--c-text-muted);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1rem;
  color: var(--c-text-secondary);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 40px;
}

/* ===== WHY BANNER ===== */
.why-banner {
  background: var(--c-surface);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 60px;
}
.why-banner-text h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 16px;
  line-height: 1.2;
}
.why-banner-text p {
  color: var(--c-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}
.why-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.why-stat {
  background: var(--c-tag-bg);
  border-radius: var(--radius-md);
  padding: 20px;
}
.why-stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--c-text);
  line-height: 1;
  margin-bottom: 4px;
}
.why-stat-label {
  font-size: 0.8rem;
  color: var(--c-text-muted);
}

/* ===== FILTER BAR ===== */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.filter-btn {
  padding: 8px 18px;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1.5px solid var(--c-border);
  border-radius: 50px;
  background: transparent;
  color: var(--c-text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--c-text);
  color: var(--c-bg);
  border-color: var(--c-text);
}

/* ===== PRODUCT GRID ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.product-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-border);
}
.product-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--c-tag-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.product-card-img img {
  width: 60%;
  height: auto;
  object-fit: contain;
  transition: transform 0.4s ease;
}
.product-card:hover .product-card-img img { transform: scale(1.05); }
.product-card-rank {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--c-text);
  color: var(--c-bg);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 50px;
  letter-spacing: 0.04em;
}
.product-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.product-card-category {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-text-muted);
  margin-bottom: 6px;
}
.product-card-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  margin-bottom: 6px;
  line-height: 1.25;
}
.product-card-tagline {
  font-size: 0.85rem;
  color: var(--c-text-secondary);
  line-height: 1.5;
  margin-bottom: 14px;
  flex: 1;
}
.product-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--c-border-light);
}
.product-card-price {
  font-weight: 600;
  font-size: 0.95rem;
}
.product-card-network {
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--c-tag-bg);
  padding: 4px 10px;
  border-radius: 50px;
  color: var(--c-text-secondary);
}

/* ===== CONTENT PAGE ===== */
.content-hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px 24px 40px;
}
.content-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.content-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px 80px;
}
.content-body h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 400;
  margin: 48px 0 16px;
  line-height: 1.25;
}
.content-body h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 32px 0 12px;
}
.content-body p {
  color: var(--c-text-secondary);
  margin-bottom: 18px;
  line-height: 1.8;
}
.content-body blockquote {
  border-left: 3px solid var(--c-border);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--c-tag-bg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--c-text-secondary);
}
.content-body ul {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.content-body ul li {
  padding: 8px 0 8px 20px;
  position: relative;
  color: var(--c-text-secondary);
}
.content-body ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 16px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-text-muted);
}

/* ===== PRODUCT DETAIL ===== */
.pd-hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 24px 0;
}
.pd-breadcrumb {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  margin-bottom: 32px;
}
.pd-breadcrumb a { color: var(--c-text-muted); }
.pd-breadcrumb a:hover { color: var(--c-text); }
.pd-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.pd-gallery {
  background: var(--c-tag-bg);
  border-radius: var(--radius-lg);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.pd-gallery img { width: 70%; height: auto; object-fit: contain; }
.pd-gallery-thumbs {
  display: flex; gap: 8px; margin-top: 12px;
}
.pd-gallery-thumb {
  width: 64px; height: 64px;
  background: var(--c-tag-bg);
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition);
}
.pd-gallery-thumb.active, .pd-gallery-thumb:hover { border-color: var(--c-text); }
.pd-gallery-thumb img { width: 80%; height: auto; object-fit: contain; }
.pd-info { padding-top: 8px; }
.pd-rank-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--c-text);
  color: var(--c-bg);
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}
.pd-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-muted);
  margin-bottom: 8px;
}
.pd-name {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 8px;
}
.pd-tagline {
  font-size: 1.05rem;
  color: var(--c-text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}
.pd-price-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 28px;
}
.pd-price {
  font-size: 1.5rem;
  font-weight: 700;
}
.pd-price-note {
  font-size: 0.82rem;
  color: var(--c-text-muted);
}
.pd-key-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 28px;
}
.pd-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--c-text-secondary);
}
.pd-feature-icon {
  width: 32px; height: 32px;
  background: var(--c-tag-bg);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

/* ===== SPECS TABLE ===== */
.specs-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 48px 24px;
}
.specs-table {
  width: 100%;
  border-collapse: collapse;
}
.specs-table tr {
  border-bottom: 1px solid var(--c-border-light);
}
.specs-table td {
  padding: 14px 0;
  font-size: 0.9rem;
  vertical-align: top;
}
.specs-table td:first-child {
  font-weight: 600;
  width: 180px;
  color: var(--c-text);
}
.specs-table td:last-child {
  color: var(--c-text-secondary);
}

/* ===== BUY LINKS ===== */
.buy-section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px 48px;
}
.buy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.buy-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: var(--c-surface);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-text);
  transition: all var(--transition);
}
.buy-link:hover {
  border-color: var(--c-text);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}
.buy-link-flag { font-size: 1.2rem; }
.buy-link-store { font-size: 0.75rem; color: var(--c-text-muted); }

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--c-border-light);
  padding: 48px 24px;
  margin-top: 60px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: 12px;
}
.footer-brand span { font-style: italic; }
.footer-desc {
  font-size: 0.85rem;
  color: var(--c-text-muted);
  line-height: 1.6;
  max-width: 280px;
}
.footer-col-title {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-muted);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--c-text-secondary);
  padding: 4px 0;
}
.footer-col a:hover { color: var(--c-text); }
.footer-bottom {
  max-width: var(--max-w);
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--c-border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--c-text-muted);
}

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .why-banner { grid-template-columns: 1fr; padding: 32px; }
  .pd-top { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .pd-key-features { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav-links { 
    display: none;
    position: fixed; top: 60px; left: 0; right: 0; bottom: 0;
    background: var(--c-bg);
    flex-direction: column;
    padding: 32px 24px;
    gap: 20px;
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-hamburger { display: flex; }
  .hero { padding: 48px 20px 40px; }
  .hero h1 { font-size: 2.2rem; }
  .section { padding: 40px 20px; }
  .product-grid { grid-template-columns: 1fr; }
  .why-stats { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .buy-grid { grid-template-columns: 1fr; }
  .filter-bar { gap: 6px; }
  .filter-btn { padding: 6px 14px; font-size: 0.78rem; }
}