/* ============================================
   Lazy AI - Modern Professional Design System
   Based on: Stripe, Linear, Notion principles
   ============================================ */

:root {
    /* Colors - Minimal palette */
    --color-bg: #ffffff;
    --color-bg-secondary: #fafafa;
    --color-bg-tertiary: #f5f5f5;
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #666666;
    --color-text-tertiary: #999999;
    --color-accent: #0066ff;
    --color-accent-hover: #0052cc;
    --color-border: #e5e5e5;
    --color-border-hover: #d4d4d4;
    --color-success: #10b981;
    --color-error: #ef4444;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
    --font-mono: "SF Mono", Menlo, Monaco, monospace;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.12);
}

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

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

/* ============================================
   Navigation
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

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

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--color-text-primary);
}

.nav-cta {
    background: var(--color-text-primary);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

.nav-cta:hover {
    background: var(--color-accent);
    transform: translateY(-1px);
}

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

.hero {
    padding: calc(64px + var(--space-4xl)) var(--space-lg) var(--space-4xl);
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 12px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    font-weight: 500;
}

.hero-badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-success);
    border-radius: 50%;
}

.hero h1 {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
}

.hero-description {
    font-size: 20px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-2xl);
    font-weight: 400;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2xl);
    margin-top: var(--space-4xl);
    padding-top: var(--space-3xl);
    border-top: 1px solid var(--color-border);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-secondary);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 24px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-family: var(--font-sans);
}

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

.btn-primary:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    border-color: var(--color-text-primary);
    transform: translateY(-2px);
}

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

.section {
    padding: var(--space-4xl) var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    max-width: 720px;
    margin: 0 auto var(--space-3xl);
    text-align: center;
}

.section-label {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.section-description {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   Cards
   ============================================ */

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all 0.3s;
}

.card:hover {
    border-color: var(--color-text-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: var(--space-lg);
}

.card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--space-md);
    letter-spacing: -0.01em;
}

.card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

/* ============================================
   Forms
   ============================================ */

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: var(--font-sans);
    color: var(--color-text-primary);
    background: var(--color-bg);
    transition: all 0.2s;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    line-height: 1.5;
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-text-primary);
    box-shadow: 0 0 0 3px rgba(26, 26, 26, 0.1);
}

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

/* ============================================
   Contact Modal
   ============================================ */

.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    margin: 10% auto;
    width: 90%;
    max-width: 480px;
    border-radius: var(--radius-lg);
    position: relative;
    animation: slideUp 0.3s ease;
    box-shadow: var(--shadow-lg);
}

@keyframes slideUp {
    from {
        transform: translateY(40px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.modal-header p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.modal-body {
    padding: var(--space-xl);
}

.contact-item {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    cursor: pointer;
    transition: all 0.2s;
}

.contact-item:hover {
    border-color: var(--color-text-primary);
    background: white;
}

.contact-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.contact-info {
    flex: 1;
}

.contact-label {
    font-size: 12px;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.contact-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
}

.copy-btn {
    background: var(--color-text-primary);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

.copy-btn.copied {
    background: var(--color-success);
}

.close-modal {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 20px;
    color: var(--color-text-secondary);
    transition: all 0.2s;
}

.close-modal:hover {
    background: var(--color-text-primary);
    color: white;
    border-color: var(--color-text-primary);
    transform: rotate(90deg);
}

.modal-note {
    background: var(--color-bg-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    text-align: center;
}

/* ============================================
   Services Grid
   ============================================ */

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.service-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all 0.3s;
}

.service-card:hover {
    border-color: var(--color-text-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: var(--space-lg);
}

.service-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--space-md);
    letter-spacing: -0.01em;
}

.service-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.service-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.service-link:hover {
    color: var(--color-accent);
}

.service-link::after {
    content: "→";
    transition: transform 0.2s;
}

.service-link:hover::after {
    transform: translateX(4px);
}

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

.pricing-toggle {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
}

.toggle-option {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all 0.2s;
}

.toggle-option.active {
    background: var(--color-text-primary);
    color: white;
    border-color: var(--color-text-primary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.pricing-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    position: relative;
    transition: all 0.3s;
}

.pricing-card:hover {
    border-color: var(--color-text-primary);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--color-text-primary);
    border-width: 2px;
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: var(--space-lg);
    background: var(--color-text-primary);
    color: white;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-name {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.pricing-price {
    font-size: 48px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.pricing-price small {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.pricing-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    font-size: 15px;
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-lg);
}

.pricing-features li {
    padding: var(--space-sm) 0;
    color: var(--color-text-secondary);
    font-size: 15px;
    display: flex;
    align-items: start;
    gap: var(--space-sm);
}

.pricing-features li::before {
    content: "✓";
    color: var(--color-text-primary);
    font-weight: 600;
    flex-shrink: 0;
}

.pricing-cta {
    width: 100%;
    padding: 12px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    display: block;
    transition: all 0.2s;
}

.pricing-cta:hover {
    background: var(--color-text-primary);
    color: white;
    border-color: var(--color-text-primary);
}

.pricing-card.featured .pricing-cta {
    background: var(--color-text-primary);
    color: white;
    border-color: var(--color-text-primary);
}

.pricing-card.featured .pricing-cta:hover {
    background: var(--color-accent);
}

.pricing-note {
    text-align: center;
    font-size: 13px;
    color: var(--color-text-tertiary);
    margin-top: var(--space-xs);
}

.pricing-content {
    display: none;
}

.pricing-content.active {
    display: block;
}

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

.footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-3xl) var(--space-lg);
    background: var(--color-bg-secondary);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
}

.footer-brand {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.footer-description {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.footer-contact {
    color: var(--color-text-secondary);
    font-size: 14px;
    line-height: 1.8;
}

.footer-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

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

.footer-bottom {
    max-width: 1200px;
    margin: var(--space-2xl) auto 0;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: 13px;
}

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

@media (max-width: 968px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 48px;
    }

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

    .section-title {
        font-size: 36px;
    }

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

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

    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
}

@media (max-width: 640px) {
    .hero h1 {
        font-size: 36px;
    }

    .section-title {
        font-size: 32px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }
}