/* ============================================
   MicroSIS.ai — Premium Design System
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

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

:root {
  --blue: #0071E3;
  --blue-dark: #0059B3;
  --blue-light: #EBF5FF;
  --black: #1D1D1F;
  --gray-900: #2D2D2F;
  --gray-700: #6E6E73;
  --gray-500: #86868B;
  --gray-300: #D2D2D7;
  --gray-100: #F5F5F7;
  --gray-50: #FAFAFA;
  --white: #FFFFFF;
  --green: #34C759;
  --orange: #FF9500;
  --red: #FF3B30;
  --purple: #5856D6;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: all 0.15s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--blue);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--blue-dark);
}

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

/* --------------- Typography --------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--black);
}

.headline-xl {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.headline-lg {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.headline-md {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
}

.headline-sm {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 600;
}

.body-lg {
  font-size: 1.25rem;
  line-height: 1.7;
  color: var(--gray-700);
}

.body-md {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--gray-700);
}

.body-sm {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--gray-500);
}

.label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blue);
}

/* --------------- Layout --------------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-sm {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-lg {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 120px 0;
}

.section-gray {
  background: var(--gray-100);
}

.section-dark {
  background: var(--black);
  color: var(--white);
}

.section-dark h1, .section-dark h2, .section-dark h3 {
  color: var(--white);
}

.section-dark .body-lg, .section-dark .body-md {
  color: var(--gray-300);
}

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

.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }
.mb-64 { margin-bottom: 64px; }
.mb-80 { margin-bottom: 80px; }
.mt-24 { margin-top: 24px; }
.mt-48 { margin-top: 48px; }

/* --------------- Buttons --------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 980px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.2;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--blue-dark);
  color: var(--white);
  transform: scale(1.02);
  box-shadow: 0 4px 16px rgba(0,113,227,0.3);
}

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

.btn-secondary:hover {
  background: var(--blue);
  color: var(--white);
  transform: scale(1.02);
}

.btn-dark {
  background: var(--black);
  color: var(--white);
}

.btn-dark:hover {
  background: var(--gray-900);
  color: var(--white);
  transform: scale(1.02);
}

.btn-white {
  background: var(--white);
  color: var(--black);
}

.btn-white:hover {
  background: var(--gray-100);
  color: var(--black);
  transform: scale(1.02);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.125rem;
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --------------- Navigation --------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0 24px;
  transition: var(--transition);
  background: rgba(255,255,255,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  border-bottom-color: var(--gray-300);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo-img {
  height: 36px;
  width: auto;
}

.footer-logo-img {
  height: 32px;
  width: auto;
  margin-bottom: 4px;
}

.nav-logo span {
  color: var(--blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--gray-700);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

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

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

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--black);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --------------- Hero --------------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #0071E3 100%);
  background-size: 400% 400%;
  animation: gradientShift 12s ease infinite;
  opacity: 0.06;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--blue-light);
  border-radius: 980px;
  margin-bottom: 32px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blue);
}

.hero h1 {
  margin-bottom: 24px;
}

.hero .body-lg {
  max-width: 640px;
  margin: 0 auto 40px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 64px;
  margin-top: 80px;
}

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

.hero-stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--black);
  letter-spacing: -0.03em;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-top: 4px;
}

/* --------------- Product Cards --------------- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--gray-300);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--card-accent, var(--blue));
  opacity: 0;
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.product-card:hover::before {
  opacity: 1;
}

.product-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 24px;
  background: var(--gray-100);
}

.product-card h3 {
  margin-bottom: 4px;
}

.product-tagline {
  font-size: 0.875rem;
  color: var(--blue);
  font-weight: 600;
  margin-bottom: 16px;
}

.product-card .body-md {
  margin-bottom: 20px;
}

.product-targets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.product-target {
  padding: 4px 12px;
  background: var(--gray-100);
  border-radius: 980px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray-700);
}

.product-card .price-from {
  font-size: 0.875rem;
  color: var(--gray-500);
}

.product-card .price-from strong {
  color: var(--black);
  font-size: 1.25rem;
}

/* --------------- Product Detail Sections --------------- */
.product-detail {
  display: none;
}

.product-detail.active {
  display: block;
}

.product-hero {
  padding: 160px 24px 80px;
  text-align: center;
  position: relative;
}

.product-hero .product-icon-lg {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto 24px;
  background: var(--gray-100);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.feature-item {
  padding: 32px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--gray-300);
  transition: var(--transition);
}

.feature-item:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.25rem;
}

.feature-item h4 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.feature-item p {
  font-size: 0.9375rem;
  color: var(--gray-700);
  line-height: 1.6;
}

/* Use Cases */
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.use-case-card {
  padding: 40px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--gray-300);
  transition: var(--transition);
}

.use-case-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.use-case-card h4 {
  font-size: 1.125rem;
  margin-bottom: 12px;
}

.use-case-card p {
  color: var(--gray-700);
  line-height: 1.7;
}

/* --------------- Pricing --------------- */
.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
}

.pricing-toggle span {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-500);
  transition: var(--transition-fast);
}

.pricing-toggle span.active {
  color: var(--black);
  font-weight: 600;
}

.toggle-switch {
  width: 52px;
  height: 28px;
  background: var(--gray-300);
  border-radius: 14px;
  position: relative;
  cursor: pointer;
  transition: var(--transition);
}

.toggle-switch.active {
  background: var(--blue);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--white);
  top: 3px;
  left: 3px;
  transition: var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle-switch.active::after {
  left: 27px;
}

.save-badge {
  background: var(--green);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 980px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  align-items: start;
}

.pricing-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--gray-300);
  transition: var(--transition);
  position: relative;
}

.pricing-card.popular {
  border: 2px solid var(--blue);
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular .popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue);
  color: var(--white);
  padding: 4px 16px;
  border-radius: 980px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.pricing-amount {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 4px;
}

.pricing-currency {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-700);
}

.pricing-value {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--black);
}

.pricing-period {
  font-size: 0.9375rem;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-features li {
  padding: 8px 0;
  font-size: 0.9375rem;
  color: var(--gray-700);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.pricing-features li::before {
  content: '✓';
  color: var(--blue);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-card .btn {
  width: 100%;
}

/* --------------- About --------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
}

.value-item {
  padding: 24px;
  border-radius: var(--radius-sm);
  background: var(--gray-100);
}

.value-item h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.value-item p {
  font-size: 0.875rem;
  color: var(--gray-700);
  line-height: 1.6;
}

.about-numbers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.about-number {
  text-align: center;
  padding: 40px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.about-number .number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: -0.03em;
}

.about-number .number-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-top: 4px;
}

/* --------------- Contact --------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-method {
  display: flex;
  gap: 16px;
}

.contact-method-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-method h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-method p {
  font-size: 0.9375rem;
  color: var(--gray-700);
}

/* --------------- Forms --------------- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  color: var(--black);
  background: var(--white);
  transition: var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--gray-500);
}

/* --------------- Footer --------------- */
.footer {
  background: var(--black);
  color: var(--gray-300);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand .nav-logo {
  color: var(--white);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer h4 {
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--gray-500);
  font-size: 0.875rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--white);
}

.newsletter-form {
  display: flex;
  gap: 8px;
}

.newsletter-form input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--gray-700);
  border-radius: 980px;
  background: transparent;
  color: var(--white);
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition-fast);
}

.newsletter-form input::placeholder {
  color: var(--gray-500);
}

.newsletter-form input:focus {
  border-color: var(--blue);
}

.newsletter-form button {
  padding: 12px 24px;
  background: var(--blue);
  color: var(--white);
  border: none;
  border-radius: 980px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.newsletter-form button:hover {
  background: var(--blue-dark);
}

.footer-bottom {
  border-top: 1px solid var(--gray-900);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--gray-500);
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  color: var(--gray-500);
  font-size: 0.8125rem;
}

.footer-legal a:hover {
  color: var(--white);
}

/* --------------- Modal / Overlays --------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px;
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--gray-100);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--gray-700);
  transition: var(--transition-fast);
}

.modal-close:hover {
  background: var(--gray-300);
  color: var(--black);
}

/* --------------- Toast Notifications --------------- */
.toast-container {
  position: fixed;
  top: 80px;
  right: 24px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 16px 24px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 320px;
  max-width: 480px;
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 4.7s forwards;
  border-left: 4px solid var(--green);
}

.toast.error {
  border-left-color: var(--red);
}

.toast-message {
  font-size: 0.9375rem;
  color: var(--black);
  line-height: 1.4;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
  to { opacity: 0; transform: translateX(100%); }
}

/* --------------- Scroll Animations --------------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up-delay-1 { transition-delay: 0.1s; }
.fade-up-delay-2 { transition-delay: 0.2s; }
.fade-up-delay-3 { transition-delay: 0.3s; }
.fade-up-delay-4 { transition-delay: 0.4s; }

/* --------------- Responsive --------------- */
@media (max-width: 1024px) {
  .section {
    padding: 80px 0;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .hero-stats {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    padding: 32px 24px;
    gap: 24px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 1.25rem;
  }

  .nav-cta {
    display: none;
  }

  .nav-cta.mobile {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding: 140px 24px 80px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

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

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

  .pricing-card.popular {
    transform: none;
  }

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

  .about-values {
    grid-template-columns: 1fr;
  }

  .about-numbers {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .btn-group {
    flex-direction: column;
    align-items: center;
  }

  .modal {
    padding: 32px 24px;
  }
}

@media (max-width: 480px) {
  .container, .container-sm {
    padding: 0 16px;
  }

  .section {
    padding: 64px 0;
  }

  .product-card {
    padding: 28px;
  }

  .pricing-card {
    padding: 28px;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .newsletter-form button {
    width: 100%;
  }
}

/* --------------- Utilities --------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Loading spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
}