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

:root {
  --primary: #1a1a2e;
  --accent: #e94560;
  --accent2: #0f3460;
  --light: #f8f9fa;
  --text: #2d2d2d;
  --muted: #6c757d;
  --card-bg: #ffffff;
  --border: #e9ecef;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.15);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--light);
  line-height: 1.6;
}

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--primary);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.2);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo .logo-mark {
  width: 36px;
  height: 36px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: #fff;
  letter-spacing: -1px;
}

.nav-logo .logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* ── HERO ── */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent2) 60%, #16213e 100%);
  color: #fff;
  padding: 100px 2rem 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 40%, rgba(233,69,96,0.18) 0%, transparent 60%);
}

.hero-inner {
  max-width: 760px;
  margin: 0 auto;
  position: relative;
}

.hero-badge {
  display: inline-block;
  background: rgba(233,69,96,0.2);
  border: 1px solid rgba(233,69,96,0.4);
  color: #ffa8b8;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero h1 span {
  color: var(--accent);
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.75);
  max-width: 560px;
  margin: 0 auto 36px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.22s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(233,69,96,0.35);
}

.btn-primary:hover {
  background: #d63651;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(233,69,96,0.45);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.08);
  transform: translateY(-2px);
}

/* ── MISSION STRIP ── */
.mission {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 40px 2rem;
  text-align: center;
}

.mission-inner {
  max-width: 700px;
  margin: 0 auto;
}

.mission h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
}

.mission p {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text);
}

/* ── SECTION WRAPPER ── */
section.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 72px 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto;
}

/* ── PRODUCT CARDS ── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.product-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, box-shadow 0.25s;
  border: 1px solid var(--border);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.product-card-header {
  padding: 36px 32px 24px;
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

.product-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  flex-shrink: 0;
}

.product-icon.book {
  background: linear-gradient(135deg, #fff3cd, #ffe08a);
}

.product-icon.app {
  background: linear-gradient(135deg, #d0ebff, #74c0fc);
}

.product-card-header-text h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.product-type-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
}

.badge-book {
  background: #fff3cd;
  color: #856404;
}

.badge-app {
  background: #d0ebff;
  color: #1864ab;
}

.product-card-body {
  padding: 0 32px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.product-card-body p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.product-highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.product-highlights li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text);
}

.product-highlights li::before {
  content: '✓';
  color: #2f9e44;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.product-card-footer {
  padding: 20px 32px 28px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.product-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
}

.product-price span {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--muted);
}

.btn-card {
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.btn-card-book {
  background: var(--accent);
  color: #fff;
}

.btn-card-book:hover {
  background: #d63651;
  transform: translateY(-1px);
}

.btn-card-app {
  background: #1971c2;
  color: #fff;
}

.btn-card-app:hover {
  background: #1864ab;
  transform: translateY(-1px);
}

/* ── VALUES ── */
.values-section {
  background: var(--primary);
  color: #fff;
}

.values-section .section-header h2 {
  color: #fff;
}

.values-section .section-header p {
  color: rgba(255,255,255,0.65);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.value-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: background 0.2s;
}

.value-card:hover {
  background: rgba(255,255,255,0.1);
}

.value-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.value-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.value-card p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.65;
}

/* ── CTA BANNER ── */
.cta-banner {
  background: linear-gradient(135deg, var(--accent) 0%, #c0392b 100%);
  color: #fff;
  text-align: center;
  padding: 72px 2rem;
}

.cta-banner-inner {
  max-width: 600px;
  margin: 0 auto;
}

.cta-banner h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-banner p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
}

.cta-banner .btn-outline {
  border-color: rgba(255,255,255,0.6);
}

/* ── FOOTER ── */
footer {
  background: var(--primary);
  color: rgba(255,255,255,0.65);
  text-align: center;
  padding: 36px 2rem;
  font-size: 0.875rem;
}

footer a {
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color 0.2s;
}

footer a:hover {
  color: var(--accent);
}

footer .footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

/* ── CONTACT ── */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  font-size: 1.5rem;
  width: 44px;
  height: 44px;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-item div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-info-item strong {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact-info-item a,
.contact-info-item address {
  font-size: 0.95rem;
  color: var(--text);
  text-decoration: none;
  font-style: normal;
  line-height: 1.5;
  transition: color 0.2s;
}

.contact-info-item a:hover {
  color: var(--accent);
}

.contact-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(233,69,96,0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #adb5bd;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

@media (max-width: 600px) {
  .nav-links {
    display: none;
  }

  .hero {
    padding: 72px 1.5rem 60px;
  }

  section.section {
    padding: 52px 1.5rem;
  }

  .product-card-header,
  .product-card-body,
  .product-card-footer {
    padding-left: 20px;
    padding-right: 20px;
  }

  .contact-form {
    padding: 24px 20px;
  }
}