:root {
  --primary-color: #0052cc; /* Professional Blue */
  --primary-color-light: #0065ff;
  --bg-color-dark: #121212;
  --text-color-dark: #e0e0e0;
  --card-bg-color-dark: #1e1e1e;
  --border-color-dark: #333333;
  --light-gray-dark: #a0a0a0;

  --bg-color-light: #ffffff;
  --text-color-light: #172b4d;
  --card-bg-color-light: #f7f8f9;
  --border-color-light: #dfe1e6;
  --light-gray-light: #5e6c84;
  
  --warning-color: #f59e0b; /* Amber/Orange for warnings */
  --error-color: #de350b; /* Red for errors */


  --font-family: "Poppins", sans-serif;
  --transition-speed: 0.3s;
  --container-width: 1200px;
  --border-radius: 12px;
}

body.dark-mode {
  --bg-color: var(--bg-color-dark);
  --text-color: var(--text-color-dark);
  --card-bg-color: var(--card-bg-color-dark);
  --border-color: var(--border-color-dark);
  --light-gray: var(--light-gray-dark);
}

body.light-mode {
  --bg-color: var(--bg-color-light);
  --text-color: var(--text-color-light);
  --card-bg-color: var(--card-bg-color-light);
  --border-color: var(--border-color-light);
  --light-gray: var(--light-gray-light);
}


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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px; /* Offset for sticky header */
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  transition: background-color var(--transition-speed),
    color var(--transition-speed);
  overflow-x: hidden;
}

#root {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex-grow: 1;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.8rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: 3rem;
}

p {
  margin-bottom: 1rem;
}

.section {
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--light-gray);
  max-width: 700px;
  margin: -2rem auto 3rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.8rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-speed) ease;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 0.95rem;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-color-light);
  transform: translateY(-3px);
  box-shadow: 0 4px 20px rgba(0, 82, 204, 0.3);
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--text-color);
  color: var(--bg-color);
  border-color: var(--text-color);
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1rem 0;
  background-color: color-mix(in srgb, var(--bg-color) 85%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-speed);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-color);
  text-decoration: none;
}

.logo-accent {
  color: var(--primary-color);
}

.main-nav {
  display: none;
  align-items: center;
  gap: 1.5rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--light-gray);
  font-weight: 500;
  transition: color var(--transition-speed);
}
.main-nav a:hover {
  color: var(--text-color);
}


.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-color);
  font-size: 1.2rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-speed);
}
.theme-toggle:hover {
    background-color: var(--card-bg-color);
}

/* Hero Section */
.hero {
  padding: 6rem 0;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    gap: 4rem;
}
.hero-content {
    text-align: center;
}
.hero h1 {
  margin-bottom: 1.5rem;
}
.hero-subheadline {
  font-size: 1.2rem;
  color: var(--light-gray);
  max-width: 650px;
  margin: 0 auto 2.5rem;
}
.hero-cta {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-visual {
    background: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.1);
    position: relative;
}
.hero-visual svg {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 8px;
}

/* Trust Logos */
.trust-logos {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.trust-logos-content {
    text-align: center;
}
.trust-logos-content > p {
    color: var(--light-gray);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 0.9rem;
    margin-bottom: 2rem;
}
.logos {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(2rem, 5vw, 4rem);
  filter: grayscale(1) contrast(0) brightness(1.5);
  transition: all var(--transition-speed);
}
body.light-mode .logos {
    filter: grayscale(1) contrast(0) brightness(0.5) opacity(0.7);
}
.logos:hover {
    filter: none;
    opacity: 1;
}
.logo-item {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-color);
}

/* Generic Card Styles */
.card {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2.5rem 2rem;
  transition: all var(--transition-speed);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.07);
  border-color: var(--primary-color);
}
.icon-wrapper {
  display: inline-flex;
  padding: 0.8rem;
  border-radius: 8px;
  background-color: color-mix(in srgb, var(--primary-color) 10%, transparent);
  color: var(--primary-color);
  margin-bottom: 1rem;
}
.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-color);
}
.card p {
    color: var(--light-gray);
}


/* Problem Section */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

/* Product Showcase */
.product-showcase {
    background-color: var(--card-bg-color);
}
.showcase-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}
.tabs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.tab-button {
    background: none;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    text-align: left;
    font-family: var(--font-family);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 1rem;
}
.tab-button .icon-wrapper {
    margin-bottom: 0;
}
.tab-button.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}
.tab-button.active .icon-wrapper {
    background-color: rgba(255,255,255,0.1);
    color: white;
}
.tab-content {
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    min-height: 250px;
}
.tab-content h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}


/* Live Threat Analysis */
.live-threat-analysis {
    background-color: var(--bg-color);
}
.analysis-container {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--card-bg-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}
.analysis-form {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-direction: column;
}
.analysis-form input {
    flex-grow: 1;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color var(--transition-speed);
}
.analysis-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.analysis-result {
    margin-top: 1rem;
    min-height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.error-message {
    color: var(--error-color);
    font-weight: 500;
}

.threat-card {
    width: 100%;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--warning-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
}
.threat-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--warning-color);
}
.threat-card-header h4 {
    color: var(--text-color);
    font-size: 1.1rem;
}
.threat-card-body > div {
    margin-bottom: 1rem;
}
.threat-card-body strong {
    font-weight: 600;
    color: var(--text-color);
    display: block;
    font-size: 0.9rem;
}
.threat-card-body p {
    color: var(--light-gray);
    margin-bottom: 0;
    word-break: break-all;
}
.threat-card-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--light-gray);
}
.threat-card-footer p {
    margin-bottom: 0;
}
.threat-card-footer a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}
.threat-card-footer a:hover {
    text-decoration: underline;
}



/* Social Proof */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.testimonial-card {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2rem;
}
.star-rating {
    color: var(--warning-color);
    margin-bottom: 1rem;
}
.testimonial-card p:first-of-type {
  font-size: 1.1rem;
  color: var(--text-color);
  margin-bottom: 1.5rem;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
}
.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 1.2rem;
}
.author-info strong {
  display: block;
  color: var(--text-color);
}
.author-info span {
  color: var(--light-gray);
}


/* Final CTA Section */
.final-cta {
  background-color: var(--card-bg-color);
  border-radius: 20px;
  padding: 4rem 2rem;
  margin: 6rem auto;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-color);
}
.final-cta-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}
.cta-text h2 {
    text-align: left;
    margin-bottom: 1rem;
}
.cta-text p {
    color: var(--light-gray);
}
.cta-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background-color: var(--bg-color);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}
.form-group input {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background-color: var(--card-bg-color);
  color: var(--text-color);
  font-family: var(--font-family);
  font-size: 1rem;
}

/* Footer */
.app-footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border-color);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}
.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 1rem;
  font-weight: 600;
}
.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-col a {
  text-decoration: none;
  color: var(--light-gray);
  transition: color var(--transition-speed);
}
.footer-col a:hover {
  color: var(--primary-color);
}
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--light-gray);
}
.social-links {
  display: flex;
  gap: 1rem;
}
.social-links a {
  color: var(--light-gray);
  font-size: 1.5rem;
  transition: color var(--transition-speed);
}
.social-links a:hover {
  color: var(--primary-color);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Styles */
@media (min-width: 576px) {
    .analysis-form {
        flex-direction: row;
    }
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-col.about {
        grid-column: span 3;
    }
}


@media (min-width: 768px) {
  .main-nav {
    display: flex;
  }
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    text-align: left;
  }
  .hero-content {
      text-align: left;
  }
  .hero-subheadline {
      margin-left: 0;
  }
  .hero-cta {
      justify-content: flex-start;
  }
  .showcase-container {
      grid-template-columns: 280px 1fr;
  }
  .testimonials-grid {
      grid-template-columns: 1fr 1fr;
  }
  .final-cta-grid {
      grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 992px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
  .footer-col.about {
    grid-column: span 1;
  }
}