/* Modern Minimal Design for Last Ping */

:root {
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-secondary: #10b981;
    --color-dark: #0f172a;
    --color-gray: #64748b;
    --color-light-gray: #f1f5f9;
    --color-white: #ffffff;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--color-dark);
    background: var(--color-light-gray);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Index page should have white background */
body.index-page {
    background: var(--color-white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

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

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

/* Layout Containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header & Navigation */
header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: var(--spacing-sm) 0;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.02em;
}

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

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

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

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

.nav-link-button {
    background: none;
    border: none;
    color: var(--color-gray);
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    font-family: inherit;
}

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

.btn-nav-cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.btn-nav-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    color: var(--color-white) !important;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Reusable Purple Button Styles */
.btn-purple {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: 2px solid var(--color-primary);
    text-decoration: none !important;
    cursor: pointer;
}

.btn-purple:hover {
    background: var(--color-primary-dark);
    color: var(--color-white) !important;
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
    text-decoration: none !important;
}

.btn-purple:active {
    transform: translateY(-1px);
}

.btn-purple-large {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: 1rem 2.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    border: 2px solid var(--color-primary);
    text-decoration: none !important;
    cursor: pointer;
}

.btn-purple-large:hover {
    background: var(--color-primary-dark);
    color: var(--color-white) !important;
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    text-decoration: none !important;
}

.btn-purple-large:active {
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--color-white);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.hero h1 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.9);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-note {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Hero Buttons */
.btn-secondary {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

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

/* Social Proof Section */
.social-proof {
    padding: var(--spacing-lg) 0;
    background: var(--color-light-gray);
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--color-gray);
    font-size: 0.95rem;
    font-weight: 500;
}

/* How It Works Section */
.how-it-works {
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-lg);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.step {
    padding: var(--spacing-md);
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
}

.step h3 {
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.step p {
    font-size: 1rem;
}

/* Use Cases Section */
.use-cases {
    padding: var(--spacing-xl) 0;
    background: var(--color-light-gray);
}

.use-cases h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

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

.use-case-card {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

/* Features Section */
.features {
    padding: var(--spacing-xl) 0;
}

.features h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

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

.feature-card {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--color-light-gray);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.cta-note {
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Footer */
footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.footer-section p, .footer-section a {
    color: rgba(255, 255, 255, 0.7);
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.footer-section a:hover {
    color: var(--color-white);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Cards for App Pages */
.card {
    background: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: var(--spacing-md);
}

.card h2 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-dark);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-light-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-text {
    display: block;
    margin-top: 0.5rem;
    color: var(--color-gray);
    font-size: 0.9rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    font-family: inherit;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-gray);
    color: var(--color-white);
}

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

/* Alerts */
.alert {
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

.text-danger {
    color: #dc2626;
}

/* Pricing Page */
.pricing-page {
    max-width: 600px;
    margin: var(--spacing-lg) auto;
    padding: 0 var(--spacing-md);
}

.pricing-card {
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    margin: var(--spacing-md) 0;
}

.price {
    margin: var(--spacing-md) 0;
}

.price .amount {
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-primary);
}

.price .period {
    font-size: 1.5rem;
    color: var(--color-gray);
}

.features {
    list-style: none;
    text-align: left;
    margin: var(--spacing-md) 0;
}

.features li {
    padding: 0.75rem 0;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--color-light-gray);
}

.features li:last-child {
    border-bottom: none;
}

.billing-note {
    color: var(--color-gray);
    margin-top: var(--spacing-sm);
}

/* FAQ */
.faq {
    max-width: 800px;
    margin: var(--spacing-lg) auto;
    padding: 0 var(--spacing-md);
}

.faq h2 {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.faq-item {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-light-gray);
    border-radius: var(--border-radius);
}

.faq-item h3 {
    color: var(--color-dark);
    margin-bottom: 0.5rem;
}

/* Badge Styles */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-secondary {
    background: var(--color-light-gray);
    color: var(--color-gray);
}

/* Free Tier Highlight Section */
.free-tier-highlight {
    padding: var(--spacing-xl) 0;
    background: var(--color-light-gray);
}

.free-tier-card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.free-tier-card h2 {
    color: var(--color-dark);
    margin-bottom: 0.5rem;
}

.free-tier-card .subtitle {
    font-size: 1.1rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-lg);
}

.free-tier-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.free-tier-feature {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
}

.feature-icon-circle {
    width: 60px;
    height: 60px;
    min-width: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
}

.feature-content h3 {
    color: var(--color-dark);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.feature-content p {
    color: var(--color-gray);
    margin: 0;
    line-height: 1.6;
}

.upgrade-note {
    background: var(--color-light-gray);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.upgrade-note p {
    margin: 0;
    color: var(--color-dark);
    font-size: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .nav-links {
        gap: var(--spacing-sm);
        flex-wrap: wrap;
        justify-content: flex-end;
    }
    
    .nav-links a {
        font-size: 0.85rem;
    }
    
    .btn-nav-cta {
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .free-tier-features {
        grid-template-columns: 1fr;
    }
    
    .free-tier-feature {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .feature-content {
        text-align: center;
    }
}