/* =============================================================================
   live24h Marketing Site - CSS
   Minimalistisch, Modern, Responsive (Mobile-First)
   ============================================================================= */

/* --- CSS Variables --- */
:root {
  --color-primary: #2563EB;
  --color-primary-dark: #1D4ED8;
  --color-primary-light: #3B82F6;
  --color-accent: #10B981;
  --color-accent-dark: #059669;
  --color-error: #EF4444;
  --color-error-dark: #DC2626;
  --color-warning: #F59E0B;

  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-bg-card: #FFFFFF;
  --color-bg-code: #F1F5F9;
  --color-text: #1E293B;
  --color-text-secondary: #64748B;
  --color-text-muted: #94A3B8;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --container-max: 1200px;
  --container-narrow: 800px;
}

/* --- Dark Mode --- */
[data-theme="dark"] {
  --color-bg: #0F172A;
  --color-bg-alt: #1E293B;
  --color-bg-card: #1E293B;
  --color-bg-code: #334155;
  --color-text: #F1F5F9;
  --color-text-secondary: #94A3B8;
  --color-text-muted: #64748B;
  --color-border: #334155;
  --color-border-light: #1E293B;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 0.75em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--color-text-secondary);
}

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

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

.container-narrow {
  max-width: var(--container-narrow);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  gap: 0.5rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-outline-light {
  background-color: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #FFFFFF;
  color: #FFFFFF;
}

.btn-block {
  display: block;
  width: 100%;
  text-align: center;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  background-color: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .site-header {
  background-color: rgba(15, 23, 42, 0.9);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
}

.logo:hover {
  color: var(--color-text);
}

.logo-icon {
  color: var(--color-accent);
  font-size: 0.75rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.logo-text {
  font-weight: 400;
}

.logo-text strong {
  font-weight: 700;
}

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all 0.3s;
}

.nav-links {
  display: none;
  list-style: none;
  flex-direction: column;
  position: absolute;
  top: 4rem;
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
  gap: 0.5rem;
}

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

.nav-links li a {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.5rem 0;
  display: block;
}

.nav-links li a.btn-primary {
  color: #FFFFFF;
}

.nav-links li a.btn-outline {
  color: var(--color-primary);
}

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

.nav-links li a.btn-primary:hover,
.nav-links li a.btn-primary.active {
  color: #FFFFFF;
}

.nav-links li a.btn-outline:hover,
.nav-links li a.btn-outline.active {
  color: #FFFFFF;
}

/* Desktop nav */
@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    display: flex;
    flex-direction: row;
    position: static;
    background: none;
    border: none;
    padding: 0;
    align-items: center;
    gap: 0.25rem;
  }

  .nav-links li a {
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
  }

  .nav-links li a:hover {
    background-color: var(--color-bg-alt);
  }
}

/* --- Hero --- */
.hero {
  padding: 4rem 0 3rem;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero .container {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 9999px;
  margin-bottom: 1.5rem;
  letter-spacing: 0.025em;
}

.hero h1 {
  font-size: 2.25rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.hero-note {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Status Demo */
.status-demo {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-xl);
}

.status-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-up {
  background-color: var(--color-accent);
  box-shadow: 0 0 6px var(--color-accent);
}

.dot-down {
  background-color: var(--color-error);
  box-shadow: 0 0 6px var(--color-error);
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.status-name {
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  font-family: var(--font-mono);
}

.status-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
}

.badge-up {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-accent-dark);
}

.badge-down {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

.status-time {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  min-width: 50px;
  text-align: right;
}

@media (min-width: 768px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
  }

  .hero h1 {
    font-size: 3rem;
  }
}

/* --- Sections --- */
.features-section,
.trust-section,
.how-section,
.pricing-section,
.cta-section {
  padding: 5rem 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  margin-bottom: 0.75rem;
}

.section-header p {
  font-size: 1.125rem;
}

/* --- Features Grid --- */
.features-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #FFFFFF;
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.feature-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
}

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

/* --- Trust Section --- */
.trust-section {
  background-color: var(--color-bg-alt);
  padding: 3rem 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  text-align: center;
}

@media (min-width: 768px) {
  .trust-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.trust-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

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

/* --- How it works --- */
.how-section {
  background-color: var(--color-bg);
}

.steps-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step {
  text-align: center;
  padding: 2rem;
}

.step-number {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #FFFFFF;
  font-size: 1.5rem;
  font-weight: 800;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
}

.step h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.step p {
  font-size: 0.9375rem;
}

/* --- Pricing --- */
.pricing-section {
  background-color: var(--color-bg-alt);
}

.pricing-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  align-items: start;
}

@media (min-width: 768px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .pricing-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pricing-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  position: relative;
  transition: all 0.2s ease;
}

.pricing-card:hover {
  box-shadow: var(--shadow-lg);
}

.pricing-highlighted {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.02);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 1rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-name {
  font-size: 1.375rem;
  margin-bottom: 0.25rem;
}

.pricing-subtitle-text {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.pricing-description {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.pricing-price {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: baseline;
  gap: 0.125rem;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.price-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
}

.price-period {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-left: 0.25rem;
}

.pricing-features {
  list-style: none;
  margin-top: 1.5rem;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0;
  font-size: 0.875rem;
}

.feature-included {
  color: var(--color-text);
}

.feature-included svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

.feature-excluded {
  color: var(--color-text-muted);
}

.feature-excluded span {
  text-decoration: line-through;
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #FFFFFF;
  text-align: center;
}

.cta-content h2 {
  color: #FFFFFF;
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.cta-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.125rem;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.cta-section .btn-primary {
  background-color: #FFFFFF;
  color: var(--color-primary);
  border-color: #FFFFFF;
}

.cta-section .btn-primary:hover {
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-primary-dark);
}

/* --- Footer --- */
.site-footer {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand p {
  font-size: 0.875rem;
  margin-top: 1rem;
  max-width: 280px;
}

.footer-links h4 {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

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

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --- Page Content --- */
.page-content {
  padding: 3rem 0;
}

.page-content h1 {
  margin-bottom: 2rem;
}

.page-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.page-content h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.page-content ul,
.page-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  color: var(--color-text-secondary);
}

.page-content li {
  margin-bottom: 0.5rem;
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
}

.page-content th,
.page-content td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.page-content th {
  font-weight: 600;
  color: var(--color-text);
  background-color: var(--color-bg-alt);
}

.page-content td {
  color: var(--color-text-secondary);
}

/* Code blocks */
.page-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-bg-code);
  padding: 0.125em 0.375em;
  border-radius: 4px;
  color: var(--color-primary);
}

.page-content pre {
  background-color: var(--color-bg-code);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.page-content pre code {
  background: none;
  padding: 0;
  color: var(--color-text);
  font-size: 0.875rem;
  line-height: 1.6;
}

[data-theme="dark"] .page-content pre {
  background-color: #0F172A;
}

/* Card list for subpages */
.card-list {
  padding: 0 0 4rem;
}

/* --- Utility --- */
@media (max-width: 767px) {
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

  .hero {
    padding: 2.5rem 0 2rem;
  }

  .features-section,
  .trust-section,
  .how-section,
  .pricing-section,
  .cta-section {
    padding: 3rem 0;
  }

  .pricing-highlighted {
    transform: none;
  }

  .pricing-card {
    padding: 1.5rem;
  }
}