/* --- CSS Reset & Variables --- */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #EFF6FF;
  --text-dark: #0F172A;
  --text-gray: #475569;
  --text-light: #94A3B8;
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --border-color: #E2E8F0;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-white);
  color: var(--text-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* --- Layout Container --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.15);
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-gray);
}

.nav-link:hover {
  color: var(--primary);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-dark);
  transition: var(--transition);
}

/* --- Hero Section --- */
.hero {
  padding: 160px 0 100px 0;
  overflow: hidden;
  background: radial-gradient(circle at 80% 20%, #EFF6FF 0%, rgba(255, 255, 255, 0) 50%);
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 64px;
}

.badge-tag {
  display: inline-block;
  background-color: var(--primary-light);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -2px;
  color: var(--text-dark);
  margin-bottom: 24px;
}

.highlight-text {
  color: var(--primary);
  background: linear-gradient(120deg, #EFF6FF 0%, #DBEAFE 100%);
  padding: 2px 8px;
  border-radius: 8px;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-gray);
  margin-bottom: 40px;
  max-w: 500px;
  line-height: 1.7;
}

.download-badges {
  display: flex;
  gap: 16px;
}

.app-store-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--text-dark);
  color: var(--bg-white);
  padding: 10px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.app-store-badge:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 30px rgba(15, 23, 42, 0.15);
  background-color: #000;
}

.apple-logo {
  width: 24px;
  height: 24px;
}

.badge-text {
  display: flex;
  flex-direction: column;
}

.badge-sub {
  font-size: 0.7rem;
  opacity: 0.8;
  text-transform: uppercase;
  font-weight: 500;
}

.badge-main {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.2;
}

/* --- CSS iPhone Mockup --- */
.hero-media {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-media::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, rgba(37, 99, 235, 0) 70%);
  z-index: -1;
  border-radius: 50%;
}

.phone {
  width: 300px;
  height: 600px;
  background-color: #000;
  border-radius: 44px;
  border: 12px solid #1e293b;
  box-shadow: var(--shadow-xl), 0 0 0 4px #475569;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-screen {
  flex: 1;
  border-radius: 32px;
  overflow: hidden;
  background-color: #F8FAFC;
  display: flex;
  flex-direction: column;
  position: relative;
}

.phone-header {
  height: 44px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 600;
  color: #000;
  z-index: 10;
}

.phone-dynamic-island {
  width: 90px;
  height: 25px;
  background-color: #000;
  border-radius: 20px;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 10px;
}

.phone-status-icons {
  display: flex;
  align-items: center;
  gap: 6px;
}

.phone-status-icons svg {
  width: 14px;
  height: 14px;
}

.phone-battery {
  width: 20px;
  height: 10px;
  border: 1px solid currentColor;
  border-radius: 3px;
  position: relative;
}

.phone-battery::after {
  content: '';
  position: absolute;
  right: 2px;
  top: 2px;
  bottom: 2px;
  left: 2px;
  background-color: currentColor;
  border-radius: 1px;
}

.app-interface {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  margin-bottom: 24px;
}

.app-logo-small {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  overflow: hidden;
}

.app-logo-small svg {
  width: 100%;
  height: 100%;
}

.app-title {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-dark);
}

.vault-status {
  background-color: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  margin-bottom: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.status-badge {
  background-color: #FEF2F2;
  color: #EF4444;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.key-graphic {
  width: 70px;
  height: 70px;
  background-color: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--primary);
  animation: pulse 2s infinite;
}

.lock-icon svg {
  width: 32px;
  height: 32px;
}

.status-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-gray);
}

.mock-passwords-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.password-item {
  background-color: var(--bg-white);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--border-color);
}

.item-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: white;
  font-weight: 800;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.google-icon {
  background-color: #EA4335;
}

.netflix-icon {
  background-color: #E50914;
}

.item-info {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.item-name {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-dark);
}

.item-pass {
  font-size: 0.75rem;
  color: var(--text-light);
  letter-spacing: 1px;
}

.item-action svg {
  width: 14px;
  height: 14px;
  color: var(--text-light);
  transform: rotate(90deg);
}

.app-footer-nav {
  display: flex;
  justify-content: space-around;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
  margin-top: auto;
}

.footer-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.65rem;
  color: var(--text-light);
  font-weight: 600;
  cursor: pointer;
}

.footer-nav-item svg {
  width: 20px;
  height: 20px;
  margin-bottom: 2px;
}

.footer-nav-item.active {
  color: var(--primary);
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(37, 99, 235, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
  }
}

/* --- Info/Guiding Section --- */
.info-text-section {
  padding: 100px 0;
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.info-badge {
  display: inline-block;
  background-color: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.info-large-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-dark);
  max-w: 800px;
  margin: 0 auto 24px auto;
  letter-spacing: -1px;
}

.underline-text {
  position: relative;
  display: inline-block;
}

.underline-text::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 8px;
  background-color: rgba(37, 99, 235, 0.15);
  z-index: -1;
  border-radius: 4px;
}

.info-large-description {
  font-size: 1.15rem;
  color: var(--text-gray);
  max-w: 700px;
  margin: 0 auto;
  line-height: 1.7;
}

/* --- Features Section --- */
.features {
  padding: 120px 0;
}

.feature-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 80px;
  margin-bottom: 120px;
}

.feature-item:last-child {
  margin-bottom: 0;
}

.feature-reversed {
  direction: rtl;
}

.feature-reversed .feature-info {
  direction: ltr;
}

.feature-reversed .feature-media {
  direction: ltr;
}

.step-num {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(37, 99, 235, 0.15);
  display: block;
  margin-bottom: 12px;
  font-family: monospace;
}

.feature-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text-dark);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.feature-description {
  font-size: 1.1rem;
  color: var(--text-gray);
  line-height: 1.7;
  margin-bottom: 24px;
}

.feature-bullets {
  list-style: none;
}

.feature-bullets li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  font-weight: 500;
  color: var(--text-dark);
  font-size: 0.95rem;
}

.feature-bullets li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
  font-weight: 800;
  font-size: 1rem;
}

.feature-media {
  display: flex;
  justify-content: center;
  align-items: center;
}

.visual-card {
  width: 100%;
  max-width: 400px;
  height: 300px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  position: relative;
  overflow: hidden;
}

.security-visual {
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
  color: var(--primary);
}

.shield-svg {
  width: 80px;
  height: 80px;
}

.sync-visual {
  background: linear-gradient(135deg, #F5F3FF 0%, #EDE9FE 100%);
  color: #7C3AED;
}

.sync-svg {
  width: 80px;
  height: 80px;
}

.biometric-visual {
  background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
  color: #059669;
}

.bio-svg {
  width: 80px;
  height: 80px;
}

.visual-tag {
  background-color: var(--bg-white);
  color: var(--text-dark);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

/* --- FAQ Section --- */
.faq-section {
  padding: 100px 0;
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 48px;
  letter-spacing: -0.5px;
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.faq-item {
  background-color: var(--bg-white);
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.faq-answer {
  color: var(--text-gray);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- Testimonials --- */
.testimonials {
  padding: 100px 0;
}

.testimonials-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 48px;
  letter-spacing: -0.5px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

.testimonial-card {
  background-color: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: left;
  border: 1px solid var(--border-color);
}

.rating-stars {
  color: #FBBF24;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 1.05rem;
  color: var(--text-gray);
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 20px;
}

.testimonial-author {
  font-weight: 700;
  color: var(--text-dark);
}

/* --- Download CTA Banner --- */
.download-cta {
  padding: 80px 0;
  background-color: var(--primary);
  color: var(--bg-white);
  overflow: hidden;
  position: relative;
}

.download-cta::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
  right: -50px;
  bottom: -50px;
  border-radius: 50%;
}

.cta-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.cta-content {
  text-align: center;
  z-index: 2;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 32px;
  letter-spacing: -1px;
}

.underline-text-white {
  position: relative;
  display: inline-block;
}

.underline-text-white::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 8px;
  background-color: rgba(255, 255, 255, 0.2);
  z-index: -1;
  border-radius: 4px;
}

.app-store-badge.badge-white {
  background-color: var(--bg-white);
  color: var(--text-dark);
}

.app-store-badge.badge-white:hover {
  background-color: var(--bg-light);
  transform: translateY(-3px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25);
}

/* --- Footer --- */
.footer {
  background-color: #0F172A;
  color: #94A3B8;
  padding: 80px 0 0 0;
  border-top: 1px solid #1E293B;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 80px;
  padding-bottom: 60px;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-logo {
  color: var(--bg-white);
}

.footer-text {
  font-size: 0.95rem;
  line-height: 1.6;
  max-w: 400px;
}

.footer-hashtag {
  font-weight: 600;
  color: var(--primary);
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.links-title {
  color: var(--bg-white);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.links-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  font-size: 0.95rem;
}

.footer-link:hover {
  color: var(--bg-white);
}

.suprebase-link {
  color: var(--bg-white);
  font-weight: 600;
}

.suprebase-link:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid #1E293B;
  padding: 30px 0;
  background-color: #0B0F19;
}

.bottom-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.copyright {
  font-size: 0.85rem;
}

/* --- Mobile Responsiveness --- */
@media (max-width: 991px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 48px;
  }
  
  .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  
  .feature-item {
    grid-template-columns: 1fr;
    gap: 48px;
    margin-bottom: 80px;
    text-align: center;
  }
  
  .feature-reversed {
    direction: ltr;
  }
  
  .feature-bullets {
    display: inline-block;
    text-align: left;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
  }
}

@media (max-width: 767px) {
  .header-container {
    height: 70px;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    flex-direction: column;
    padding: 30px 24px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    gap: 24px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }
  
  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .menu-toggle.active span:nth-child(2) {
    transform: rotate(-45deg);
  }
  
  .hero {
    padding: 120px 0 60px 0;
  }
  
  .hero-title {
    font-size: 2.25rem;
    letter-spacing: -1px;
  }
  
  .info-large-title {
    font-size: 1.8rem;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}