/* ============================================
   ServerCheck – Design Language CSS
   Modern. Ruhig. Vertrauenswürdig.
   ============================================ */

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

:root {
    /* Colors */
    --bg-primary: #0B0D10;
    --bg-secondary: #11151C;
    --bg-tertiary: #151A22;
    --color-primary: #3B82F6;
    --color-primary-hover: #2563EB;
    --color-status-up: #22C55E;
    --color-status-down: #EF4444;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #9CA3AF;
    --color-border: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 10px;
    
    /* Container */
    --container-max-width: 1200px;
    --container-padding: 1.5rem;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-normal);
    color: var(--color-text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ============================================
   Header
   ============================================ */

.header {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    padding: 0.35rem 0.6rem;
    border-radius: var(--radius-sm);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-primary);
    background: var(--color-border);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-toggle {
    display: none;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--bg-secondary);
    color: var(--color-text-primary);
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.logo-main {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: 1.2;
}

.logo-sub {
    font-size: 0.875rem;
    font-weight: var(--font-weight-normal);
    color: var(--color-text-secondary);
    line-height: 1.2;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.hero-headline {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subline {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.hero-powered {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    margin-bottom: var(--spacing-2xl);
}

.signup-form {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.signup-input {
    min-width: 260px;
    padding: 0.75rem 0.9rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--bg-secondary);
    color: var(--color-text-primary);
}

.signup-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.signup-status {
    margin-top: var(--spacing-sm);
    color: var(--color-text-secondary);
    min-height: 1.2em;
}

.signup-status.success { color: var(--color-status-up); }
.signup-status.error { color: var(--color-status-down); }

/* Social Proof */
.social-proof {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.social-proof-text {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.social-proof-count {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

/* Section CTAs */
.section-cta {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.signup-form-inline {
    max-width: 500px;
    margin: 0 auto;
}

/* Mockup Context */
.mockup-context {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.mockup-context p {
    margin-bottom: var(--spacing-xs);
}

.mockup-context p:last-child {
    margin-bottom: 0;
}

.mockup-context strong {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
}

.badge-early {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.7rem;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--color-border);
    color: var(--color-warning);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    background: var(--bg-tertiary);
    font-weight: var(--font-weight-medium);
}

.badge-up {
    color: var(--color-status-up);
    border-color: rgba(34,197,94,0.3);
}

.badge-down {
    color: var(--color-status-down);
    border-color: rgba(239,68,68,0.3);
}

.hero-mockup {
    margin-top: var(--spacing-2xl);
    display: flex;
    justify-content: center;
    width: 100%;
}

.status-mockup {
    background: var(--bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    min-width: 280px;
}

/* Dashboard Mockup */
.dashboard-mockup {
    background: var(--bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    max-width: 900px;
    width: 100%;
    box-shadow: var(--shadow-md);
}

.dashboard-mockup-minimal {
    max-width: 600px;
    padding: var(--spacing-md);
}

.mockup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.mockup-header h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.mockup-stats {
    display: flex;
    gap: var(--spacing-sm);
}

.stat-badge {
    padding: 0.35rem 0.7rem;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    font-weight: var(--font-weight-medium);
}

.stat-badge.stat-up {
    color: var(--color-status-up);
    border-color: rgba(34,197,94,0.3);
}

.stat-badge.stat-down {
    color: var(--color-status-down);
    border-color: rgba(239,68,68,0.3);
}

.mockup-servers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.mockup-server-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mockup-server-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-sm);
}

.mockup-server-header strong {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
}

.mockup-server-meta {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    font-family: 'Monaco', 'Menlo', monospace;
}

.mockup-timeline {
    margin-top: var(--spacing-xs);
}

.timeline-bar {
    display: flex;
    height: 6px;
    border-radius: 3px;
    overflow: hidden;
    background: var(--bg-primary);
    margin-bottom: var(--spacing-2xs);
}

.timeline-segment {
    height: 100%;
}

.timeline-segment.up {
    background: var(--color-status-up);
}

.timeline-segment.down {
    background: var(--color-status-down);
}

.timeline-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
}

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

.status-dot.status-up {
    background-color: var(--color-status-up);
    animation: pulse 2s ease-in-out infinite;
}

.status-dot.status-down {
    background-color: var(--color-status-down);
}

.status-label {
    font-size: 0.875rem;
    color: var(--color-text-primary);
    font-family: 'Monaco', 'Menlo', monospace;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    font-family: var(--font-family);
}

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

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

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

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

/* ============================================
   Benefits Section
   ============================================ */

.benefits {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.benefit-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.benefit-card h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.benefit-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   Comparison Section
   ============================================ */

.comparison {
    padding: var(--spacing-2xl) 0;
}

.comparison-table {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    border-bottom: 1px solid var(--color-border);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-header {
    background-color: var(--bg-tertiary);
    font-weight: var(--font-weight-semibold);
}

.comparison-cell {
    padding: var(--spacing-md);
    color: var(--color-text-primary);
    font-size: 0.9375rem;
}

.comparison-header .comparison-cell {
    color: var(--color-text-primary);
}

.comparison-row:not(.comparison-header) .comparison-cell:first-child {
    color: var(--color-text-secondary);
}

/* ============================================
   How it works Section
   ============================================ */

.how-it-works {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.how-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.how-step {
    text-align: center;
    padding: var(--spacing-lg);
}

.how-number {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin: 0 auto var(--spacing-md);
}

.how-step h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.how-step p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.check-types {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.check-types-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.check-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.check-type-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
}

.check-type-card h4 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.check-type-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   Use Cases Section
   ============================================ */

.use-cases {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.use-case-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.use-case-card h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.use-case-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.use-case-card p:last-child {
    margin-bottom: 0;
}

.use-case-quote {
    font-style: italic;
    color: var(--color-text-primary);
    border-left: 2px solid var(--color-primary);
    padding-left: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

/* ============================================
   Final CTA Section
   ============================================ */

.final-cta {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
    text-align: center;
}

.final-cta-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.final-cta-text {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.final-cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   What ServerCheck is NOT Section
   ============================================ */

.not-section {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
}

.not-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.not-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.not-icon {
    font-size: 1.5rem;
    color: var(--color-status-down);
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.not-item p {
    color: var(--color-text-primary);
    font-size: 0.9375rem;
    margin: 0;
}

.not-summary {
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    font-style: italic;
    margin-top: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Pricing Section
   ============================================ */

.pricing {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.pricing-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.pricing-plan {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.pricing-price {
    margin-bottom: var(--spacing-xs);
}

.pricing-amount {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.pricing-period {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-left: 0.25rem;
}

.pricing-alternative {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.pricing-features {
    list-style: none;
    margin: var(--spacing-md) 0;
    flex-grow: 1;
}

.pricing-features li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    position: relative;
    padding-left: 1.5rem;
}

.pricing-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

.pricing-card .btn {
    width: 100%;
    text-align: center;
    margin-top: var(--spacing-md);
}

.pricing-note {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-text {
    color: var(--color-text-primary);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-xs);
}

.footer-powered {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* ============================================
   Animations (Subtle)
   ============================================ */

.benefit-card,
.pricing-card,
.comparison-table,
.not-item,
.how-step,
.check-type-card,
.use-case-card {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.benefit-card.fade-in,
.pricing-card.fade-in,
.comparison-table.fade-in,
.not-item.fade-in,
.how-step.fade-in,
.check-type-card.fade-in,
.use-case-card.fade-in {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --spacing-2xl: 3rem;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .benefits-grid,
    .pricing-grid,
    .not-grid,
    .how-steps,
    .check-types-grid,
    .use-cases-grid,
    .mockup-servers {
        grid-template-columns: 1fr;
    }
    
    .mockup-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .mockup-stats {
        width: 100%;
        flex-wrap: wrap;
    }
    
    .final-cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .final-cta-buttons .btn {
        width: 100%;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        right: var(--container-padding);
        flex-direction: column;
        background: var(--bg-secondary);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        padding: var(--spacing-sm);
        min-width: 180px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    }
    .nav-links.open { display: flex; }
    .header-actions { display: none; }
    .nav-toggle { display: inline-flex; }
    
    .comparison-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
    
    .comparison-header {
        display: none;
    }
    
    .comparison-cell {
        padding: var(--spacing-sm);
    }
    
    .comparison-row:not(.comparison-header) .comparison-cell:first-child {
        font-weight: var(--font-weight-semibold);
        color: var(--color-text-primary);
        border-bottom: 1px solid var(--color-border);
        padding-bottom: var(--spacing-xs);
        margin-bottom: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .status-mockup {
        min-width: 100%;
    }
    
    .pricing-amount {
        font-size: 2rem;
    }
}