/* ============================================
   ArchGuard — SaaS Marketing Website Styles
   ============================================ */

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

:root {
  --color-bg: #0F172A;
  --color-bg-alt: #111827;
  --color-surface: #1E293B;
  --color-surface-hover: #334155;
  --color-border: #1E293B;
  --color-border-light: #334155;
  --color-accent: #009DE8;
  --color-accent-hover: #0085c9;
  --color-accent-light: rgba(0, 157, 232, 0.15);
  --color-accent-deep: #056CC4;
  --color-accent-deep-light: rgba(5, 108, 196, 0.3);
  --color-teal: #07BED9;
  --color-green: #10B981;
  --color-amber: #F59E0B;
  --color-rose: #F43F5E;
  --color-text: #F8FAFC;
  --color-text-secondary: #94A3B8;
  --color-text-muted: #64748B;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(0, 157, 232, 0.15);
  --transition: 0.2s ease;
}

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

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

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

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

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
}

h3 {
  font-size: 1.25rem;
}

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

.section {
  padding: 120px 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  height: 64px;
  width: auto;
  display: block;
}

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

.nav-links a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  white-space: nowrap;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

.btn-primary {
  background: var(--color-accent);
  color: white;
  box-shadow: 0 0 20px rgba(0, 157, 232, 0.3);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 0 30px rgba(0, 157, 232, 0.4);
  transform: translateY(-1px);
}

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

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

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-gradient {
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 157, 232, 0.12) 0%, rgba(5, 108, 196, 0.06) 40%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 157, 232, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 157, 232, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 20%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 80px 0;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-accent-light);
  border: 1px solid rgba(0, 157, 232, 0.3);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  margin-bottom: 24px;
  background: linear-gradient(180deg, #fff 0%, #94A3B8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

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

.hero-visual {
  margin-top: 64px;
}

.hero-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  max-width: 480px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.hero-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-dot.green {
  background: var(--color-green);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

.hero-card-title {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.hero-card-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.metric {
  text-align: center;
}

.metric-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.metric-label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ---------- Section Header ---------- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}

.section-label {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-accent-light);
  border: 1px solid rgba(0, 157, 232, 0.25);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ---------- Problem Section ---------- */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.problem-card:hover {
  border-color: rgba(0, 157, 232, 0.3);
  box-shadow: var(--shadow-glow);
}

.problem-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(244, 63, 94, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-rose);
  margin-bottom: 20px;
}

.problem-card h3 {
  margin-bottom: 10px;
}

.problem-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ---------- Solution Section ---------- */
.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.solution-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color var(--transition), transform var(--transition);
}

.solution-card:hover {
  border-color: rgba(0, 157, 232, 0.3);
  transform: translateY(-2px);
}

.solution-number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-mono);
  margin-bottom: 16px;
}

.solution-card h3 {
  margin-bottom: 10px;
}

.solution-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ---------- Users Section ---------- */
.users-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.user-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color var(--transition), transform var(--transition);
}

.user-card:hover {
  border-color: rgba(0, 157, 232, 0.3);
  transform: translateY(-2px);
}

.user-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-accent-deep-light);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  margin-bottom: 20px;
}

.user-card h3 {
  margin-bottom: 10px;
}

.user-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ---------- Features Section ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
  border-color: rgba(0, 157, 232, 0.3);
  transform: translateY(-2px);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  margin-bottom: 18px;
}

.feature-icon.violet {
  background: rgba(0, 157, 232, 0.12);
  color: var(--color-accent);
}

.feature-icon.indigo {
  background: rgba(0, 157, 232, 0.12);
  color: var(--color-accent);
}

.feature-icon.blue {
  background: rgba(5, 108, 196, 0.12);
  color: var(--color-accent-deep);
}

.feature-icon.teal {
  background: rgba(7, 190, 217, 0.12);
  color: var(--color-teal);
}

.feature-icon.green {
  background: rgba(16, 185, 129, 0.12);
  color: var(--color-green);
}

.feature-icon.amber {
  background: rgba(245, 158, 11, 0.12);
  color: var(--color-amber);
}

.feature-icon.rose {
  background: rgba(244, 63, 94, 0.12);
  color: var(--color-rose);
}

.feature-icon.cyan {
  background: rgba(6, 182, 212, 0.12);
  color: var(--color-cyan);
}

.feature-card h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ---------- How It Works Section ---------- */
.steps-grid {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 1000px;
  margin: 0 auto;
}

.step-card {
  flex: 1;
  text-align: center;
  padding: 40px 32px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-deep));
  color: white;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 24px;
  box-shadow: 0 0 20px rgba(0, 157, 232, 0.3);
}

.step-card h3 {
  margin-bottom: 12px;
}

.step-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.step-connector {
  display: flex;
  align-items: center;
  padding-top: 60px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

/* ---------- CTA Section ---------- */
.section-cta {
  background: linear-gradient(135deg, var(--color-accent-deep) 0%, var(--color-bg) 50%, rgba(0, 157, 232, 0.08) 100%);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.cta-content {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  margin-bottom: 16px;
}

.cta-content p {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 32px;
}

/* ---------- Contact Section ---------- */
.contact-wrapper {
  max-width: 640px;
  margin: 0 auto;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 12px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 157, 232, 0.15);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%2364748B' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group select option {
  background: var(--color-surface);
  color: var(--color-text);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-checkbox {
  flex-direction: row;
  align-items: center;
  gap: 10px;
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.form-checkbox label {
  cursor: pointer;
}

/* Success message */
.form-success {
  display: none;
  text-align: center;
  padding: 60px 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
}

.form-success.visible {
  display: block;
}

.success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: rgba(16, 185, 129, 0.1);
  border-radius: 50%;
  color: var(--color-green);
  margin-bottom: 24px;
}

.form-success h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.form-success p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
}

/* ---------- Footer ---------- */
.footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

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

.footer-tagline {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  width: 100%;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-bottom a {
  color: var(--color-accent);
  transition: color var(--transition);
}

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

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .users-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .solution-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--color-border);
  }

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

  .mobile-menu-btn {
    display: flex;
  }

  .nav-actions .btn {
    display: none;
  }

  .hero-content {
    padding: 40px 0;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .problem-grid,
  .solution-grid,
  .users-grid {
    grid-template-columns: 1fr;
  }

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

  .steps-grid {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .step-connector {
    transform: rotate(90deg);
    padding: 8px 0;
  }

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

  .hero-card-metrics {
    gap: 8px;
  }

  .metric-value {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .hero-cta .btn {
    width: 100%;
    max-width: 280px;
  }
}