/* ============================================
   BrainySprouts — Design System & Styles
   ============================================ */

/* ---------- Google Font ---------- */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&display=swap');

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Nunito', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
}

ul,
ol {
  list-style: none;
}

input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ---------- Design Tokens ---------- */
:root {
  --primary: #6C63FF;
  --primary-light: #8B83FF;
  --primary-dark: #5147CC;
  --secondary: #FF6B6B;
  --secondary-light: #FF8E8E;
  --accent: #FFD93D;
  --accent-dark: #F0C800;
  --success: #4ECB71;
  --success-light: #E8F9EE;
  --info: #54A0FF;
  --bg: #FAFBFF;
  --bg-alt: #F0F2FF;
  --card: #FFFFFF;
  --text: #2D3436;
  --text-light: #636E72;
  --text-lighter: #B2BEC3;
  --border: #E8ECF4;
  --shadow-sm: 0 2px 8px rgba(108, 99, 255, .08);
  --shadow-md: 0 4px 20px rgba(108, 99, 255, .10);
  --shadow-lg: 0 8px 40px rgba(108, 99, 255, .14);
  --shadow-xl: 0 16px 60px rgba(108, 99, 255, .18);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;
  --transition: .25s cubic-bezier(.4, 0, .2, 1);
  --max-width: 1200px;
  --nav-height: 72px;
}

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-sm {
  padding: 48px 0;
}

.text-center {
  text-align: center;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: .95rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(255, 255, 255, .2), transparent);
  opacity: 0;
  transition: var(--transition);
}

.btn:hover::after {
  opacity: 1;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(108, 99, 255, .3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(108, 99, 255, .4);
}

.btn-secondary {
  background: var(--secondary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 107, 107, .3);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255, 107, 107, .4);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-sm {
  padding: 10px 20px;
  font-size: .85rem;
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
}

.badge-worksheet {
  background: #EDE7FF;
  color: var(--primary);
}

.badge-course {
  background: #FFE8E8;
  color: var(--secondary);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-alt);
  color: var(--text-light);
  font-size: .8rem;
  font-weight: 600;
}

/* ---------- Typography ---------- */
h1 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.02em;
}

h2 {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
}

h3 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
}

h4 {
  font-size: 1.15rem;
  font-weight: 700;
}

p {
  color: var(--text-light);
}

.section-header {
  margin-bottom: 48px;
}

.section-header h2 {
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(232, 236, 244, .6);
  height: var(--nav-height);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 900;
}

.nav-logo span:first-child {
  font-size: 1.6rem;
}

.nav-logo .logo-brainy {
  color: #6C63FF;
}

.nav-logo .logo-sprouts {
  color: #2ECC71;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-weight: 600;
  color: var(--text-light);
  position: relative;
  transition: var(--transition);
  font-size: .95rem;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cart-btn {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-size: 1.2rem;
}

.cart-btn:hover {
  background: var(--primary);
  color: #fff;
}

.cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--secondary);
  color: #fff;
  font-size: .7rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0);
  transition: var(--transition);
}

.cart-badge.show {
  transform: scale(1);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  height: 3px;
  border-radius: 2px;
  background: var(--text);
  transition: var(--transition);
}

/* Mobile nav */
@media(max-width:768px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    flex-direction: column;
    justify-content: flex-start;
    padding: 32px 20px;
    gap: 0;
    transform: translateX(100%);
    transition: var(--transition);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.2rem;
    padding: 16px 0;
    width: 100%;
    border-bottom: 1px solid var(--border);
  }
}

/* ---------- Hero ---------- */
.hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(170deg, #F0F2FF 0%, #FAFBFF 40%, #FFF5F5 70%, #FAFBFF 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 99, 255, .08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 107, 107, .06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--success-light);
  color: var(--success);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: .85rem;
  margin-bottom: 24px;
}

.hero h1 {
  margin-bottom: 20px;
}

.hero h1 .highlight {
  color: #6C63FF;
}

.hero h1 .highlight-2 {
  color: #2ECC71;
}

.hero-desc {
  font-size: 1.15rem;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
}

.hero-stat strong {
  display: block;
  font-size: 1.5rem;
  color: var(--text);
}

.hero-stat span {
  font-size: .85rem;
  color: var(--text-light);
}

.hero-image {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-image img {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.hero-float {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 14px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  animation: float 3s ease-in-out infinite;
}

.hero-float-1 {
  top: 10%;
  left: -20px;
  animation-delay: 0s;
}

.hero-float-2 {
  bottom: 15%;
  right: -10px;
  animation-delay: 1.5s;
}

.hero-float .float-icon {
  font-size: 1.6rem;
}

.hero-float .float-text {
  font-weight: 700;
  font-size: .85rem;
  color: var(--text);
}

.hero-float .float-sub {
  font-size: .75rem;
  color: var(--text-light);
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@media(max-width:768px) {
  .hero {
    padding: 110px 0 60px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-content {
    max-width: 100%;
  }

  h1 {
    font-size: 2.2rem;
  }

  .hero-ctas {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-image {
    order: -1;
  }

  .hero-float {
    display: none;
  }
}

/* ---------- Trust Bar ---------- */
.trust-bar {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 24px 20px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.trust-icon {
  font-size: 2rem;
}

.trust-info strong {
  display: block;
  font-size: 1.1rem;
  color: var(--text);
}

.trust-info span {
  font-size: .8rem;
  color: var(--text-light);
}

/* ---------- Featured Products ---------- */
.featured {
  background: var(--bg);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 24px;
}

.product-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
}

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

.product-card-img {
  height: 200px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, var(--bg-alt), #FFF0F0);
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.product-card:hover .product-card-img img {
  transform: scale(1.05);
}

.product-card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
}

.product-card-body {
  padding: 20px;
}

.product-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.product-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.product-card-age {
  font-size: .8rem;
  color: var(--text-light);
  background: var(--bg-alt);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.product-card-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .8rem;
  color: var(--accent-dark);
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.product-card-price {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
}

.product-card-btn {
  padding: 10px 18px;
  border-radius: var(--radius);
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: .8rem;
  transition: var(--transition);
}

.product-card-btn:hover {
  background: var(--primary-dark);
}

/* ---------- How It Works ---------- */
.how-it-works {
  background: #fff;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.step-card {
  text-align: center;
  padding: 40px 24px;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 900;
  color: #fff;
  margin: 0 auto 20px;
}

.step-1 .step-number {
  background: var(--primary);
}

.step-2 .step-number {
  background: var(--secondary);
}

.step-3 .step-number {
  background: var(--success);
}

.step-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.step-card h3 {
  margin-bottom: 8px;
}

.step-card p {
  font-size: .95rem;
}

.step-arrow {
  display: none;
  position: absolute;
  right: -28px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--text-lighter);
}

@media(min-width:769px) {
  .step-arrow {
    display: block;
  }
}

@media(max-width:768px) {
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* ---------- Testimonials ---------- */
.testimonials {
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.testimonials::before {
  content: '❝';
  position: absolute;
  top: 40px;
  left: 40px;
  font-size: 12rem;
  color: rgba(108, 99, 255, .04);
  line-height: 1;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
}

.testimonial-stars {
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.testimonial-name {
  font-weight: 700;
  color: var(--text);
  font-size: .9rem;
}

.testimonial-role {
  font-size: .8rem;
  color: var(--text-light);
}

/* ---------- FAQ ---------- */
.faq {
  background: #fff;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  font-size: 1.2rem;
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ---------- Email Capture / CTA Banner ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #8B83FF 50%, var(--secondary) 100%);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='m36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm-30 30v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 64px 20px;
}

.cta-inner h2 {
  color: #fff;
  margin-bottom: 12px;
}

.cta-inner p {
  color: rgba(255, 255, 255, .85);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.cta-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

.cta-form input {
  flex: 1;
  padding: 16px 20px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}

.cta-form input:focus {
  border-color: var(--accent);
}

.cta-form button {
  white-space: nowrap;
}

@media(max-width:480px) {
  .cta-form {
    flex-direction: column;
  }
}

/* ---------- Footer ---------- */
.footer {
  background: #1A1A2E;
  color: rgba(255, 255, 255, .7);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-desc {
  font-size: .9rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-size: 1rem;
}

.footer-social a:hover {
  background: var(--primary);
  color: #fff;
}

.footer h4 {
  color: #fff;
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: .9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .85rem;
  flex-wrap: wrap;
  gap: 12px;
}

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

@media(max-width:480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Products Listing Page ---------- */
.page-header {
  padding: 120px 0 40px;
  background: linear-gradient(170deg, #F0F2FF, #FAFBFF);
  text-align: center;
}

.page-header h1 {
  font-size: 2.4rem;
  margin-bottom: 8px;
}

.page-header p {
  font-size: 1.05rem;
}

.listing-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  padding: 40px 0 80px;
}

/* Filters */
.filters {
  position: sticky;
  top: 90px;
  align-self: start;
}

.filter-group {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
}

.filter-group h4 {
  margin-bottom: 12px;
  font-size: .95rem;
  color: var(--text);
}

.filter-group label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  cursor: pointer;
  font-size: .9rem;
  color: var(--text-light);
  transition: var(--transition);
}

.filter-group label:hover {
  color: var(--primary);
}

.filter-group input[type="checkbox"],
.filter-group input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.sort-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.sort-bar .result-count {
  font-size: .9rem;
  color: var(--text-light);
}

.sort-bar select {
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
  font-weight: 600;
  outline: none;
  cursor: pointer;
}

.no-results {
  text-align: center;
  padding: 80px 20px;
}

.no-results .emoji {
  font-size: 3rem;
  margin-bottom: 16px;
}

/* Mobile Filter Toggle */
.filter-toggle {
  display: none;
  padding: 12px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-weight: 700;
  margin-bottom: 16px;
  width: 100%;
  font-size: .9rem;
}

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

  .filters {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    z-index: 900;
    overflow-y: auto;
    padding: 20px;
  }

  .filters.open {
    display: block;
  }

  .filter-toggle {
    display: block;
  }
}

/* ---------- Product Detail Page ---------- */
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding: 120px 0 80px;
}

.detail-gallery {}

.detail-main-img {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-alt);
  margin-bottom: 12px;
}

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

.detail-thumbnails {
  display: flex;
  gap: 8px;
}

.detail-thumbnails button {
  width: 72px;
  height: 56px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-alt);
}

.detail-thumbnails button.active {
  border-color: var(--primary);
}

.detail-thumbnails button img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-info {}

.detail-info .badge {
  margin-bottom: 12px;
}

.detail-info h1 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.detail-rating {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--accent-dark);
}

.detail-rating span {
  color: var(--text-light);
  font-size: .9rem;
}

.detail-price {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 20px;
}

.detail-desc {
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 24px;
}

.detail-includes h4 {
  margin-bottom: 12px;
}

.detail-includes li {
  padding: 8px 0;
  padding-left: 28px;
  position: relative;
  color: var(--text-light);
  font-size: .95rem;
}

.detail-includes li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

.quantity-selector {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 20px;
}

.quantity-selector button {
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  transition: var(--transition);
}

.quantity-selector button:first-child {
  border-radius: var(--radius) 0 0 var(--radius);
}

.quantity-selector button:last-child {
  border-radius: 0 var(--radius) var(--radius) 0;
}

.quantity-selector button:hover {
  background: var(--bg-alt);
}

.quantity-selector input {
  width: 56px;
  height: 44px;
  border: 1px solid var(--border);
  border-left: none;
  border-right: none;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  outline: none;
}

.related-products {
  padding: 60px 0 80px;
}

@media(max-width:768px) {
  .detail-layout {
    grid-template-columns: 1fr;
    padding-top: 100px;
  }
}

/* ---------- Checkout ---------- */
.checkout-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  padding: 120px 0 80px;
}

.checkout-section {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.checkout-section h3 {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.cart-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item-img {
  width: 72px;
  height: 56px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-alt);
  flex-shrink: 0;
}

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

.cart-item-info {
  flex: 1;
}

.cart-item-title {
  font-weight: 700;
  font-size: .9rem;
  margin-bottom: 4px;
}

.cart-item-price {
  color: var(--primary);
  font-weight: 700;
  font-size: .9rem;
}

.cart-item-remove {
  background: none;
  border: none;
  color: var(--text-lighter);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
  padding: 4px;
}

.cart-item-remove:hover {
  color: var(--secondary);
}

.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 8px;
}

.cart-item-qty button {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: .85rem;
}

.cart-item-qty button:hover {
  background: var(--bg-alt);
}

.cart-item-qty span {
  font-weight: 700;
  min-width: 20px;
  text-align: center;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-weight: 700;
  font-size: .85rem;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: var(--transition);
  background: #fff;
}

.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, .1);
}

.form-group .error {
  border-color: var(--secondary);
}

.form-group .error-msg {
  color: var(--secondary);
  font-size: .8rem;
  margin-top: 4px;
}

.order-summary {
  position: sticky;
  top: 90px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  font-size: .95rem;
}

.summary-row.total {
  border-top: 2px solid var(--border);
  margin-top: 8px;
  padding-top: 16px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
}

.discount-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.discount-row input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
}

@media(max-width:768px) {
  .checkout-layout {
    grid-template-columns: 1fr;
    padding-top: 100px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .order-summary {
    position: static;
  }
}

/* ---------- Download / Confirmation ---------- */
.download-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 20px 60px;
  background: linear-gradient(170deg, #F0F2FF 0%, #FAFBFF 50%, #E8F9EE 100%);
}

.download-card {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  max-width: 560px;
  width: 100%;
}

.download-icon {
  font-size: 4rem;
  margin-bottom: 20px;
}

.download-card h1 {
  font-size: 2rem;
  margin-bottom: 8px;
}

.download-card>p {
  margin-bottom: 32px;
}

.download-list {
  text-align: left;
  margin-bottom: 32px;
}

.download-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 8px;
  transition: var(--transition);
}

.download-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.download-item-icon {
  font-size: 1.6rem;
}

.download-item-info {
  flex: 1;
}

.download-item-title {
  font-weight: 700;
  font-size: .9rem;
}

.download-item-size {
  font-size: .8rem;
  color: var(--text-light);
}

.download-item .btn {
  flex-shrink: 0;
}

/* ---------- Toast ---------- */
.toast-container {
  position: fixed;
  top: 90px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: #fff;
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateX(120%);
  transition: var(--transition);
  min-width: 280px;
}

.toast.show {
  transform: translateX(0);
}

.toast-icon {
  font-size: 1.3rem;
}

.toast-msg {
  font-weight: 600;
  font-size: .9rem;
  color: var(--text);
}

.toast-success {
  border-left: 4px solid var(--success);
}

.toast-error {
  border-left: 4px solid var(--secondary);
}

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}

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

/* ---------- Cart Sidebar ---------- */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .4);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.cart-overlay.open {
  opacity: 1;
  visibility: visible;
}

.cart-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: 400px;
  max-width: 90vw;
  height: 100vh;
  background: #fff;
  z-index: 2001;
  transform: translateX(100%);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.cart-sidebar.open {
  transform: translateX(0);
}

.cart-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px;
  border-bottom: 1px solid var(--border);
}

.cart-sidebar-header h3 {
  font-size: 1.2rem;
}

.cart-sidebar-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-light);
  cursor: pointer;
}

.cart-sidebar-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 24px;
}

.cart-sidebar-empty {
  text-align: center;
  padding: 60px 20px;
}

.cart-sidebar-empty .emoji {
  font-size: 3rem;
  margin-bottom: 16px;
}

.cart-sidebar-footer {
  padding: 24px;
  border-top: 1px solid var(--border);
}

.cart-sidebar-total {
  display: flex;
  justify-content: space-between;
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 16px;
}

/* ---------- Loading Skeleton ---------- */
.skeleton {
  background: linear-gradient(90deg, var(--bg-alt) 25%, #E8EAFF 50%, var(--bg-alt) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}