/* ContextSync - Modern Tech Style */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-light: #334155;
    --border: #334155;
    --text: #f1f5f9;
    --text-light: #94a3b8;
    --text-muted: #64748b;
    --gradient-start: #6366f1;
    --gradient-end: #8b5cf6;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--text);
    background: var(--background);
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    font-weight: 700;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.75rem; }
}

/* Navigation */
.nav {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
    text-decoration: none;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text);
    margin-left: 10px;
}

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

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary-light);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.15) 0%, transparent 50%);
}

.hero h1 {
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--text) 0%, var(--text-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-highlight {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.35rem;
    color: var(--text-light);
    max-width: 650px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.hero-trust {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.hero-trust svg {
    color: var(--success);
}

/* Pain Points Section */
.pain-points {
    padding: 100px 0;
    background: var(--surface);
}

.pain-points h2 {
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 60px;
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.pain-card {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
}

.pain-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.pain-icon {
    width: 48px;
    height: 48px;
    background: rgba(239, 68, 68, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.pain-card h3 {
    margin-bottom: 12px;
    color: var(--text);
}

.pain-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.pain-quote {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    font-style: italic;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Solution Section */
.solution {
    padding: 100px 0;
}

.solution h2 {
    text-align: center;
    margin-bottom: 16px;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 60px;
}

.solution-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: all 0.3s ease;
}

.solution-card:hover {
    border-color: var(--primary);
}

.solution-card .icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 2rem;
}

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

.solution-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Tools Section */
.tools-section {
    padding: 100px 0;
    background: var(--background);
}

.tools-section h2 {
    text-align: center;
    margin-bottom: 16px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 60px;
}

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

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

.tool-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.tool-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.15);
}

.tool-logo {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    background: rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.tool-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.tool-logo-more {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
}

.tool-logo-more span {
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.tool-card h3 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

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

.tool-card-more {
    border-style: dashed;
}

/* How It Works - Vertical Timeline */
.how-it-works {
    padding: 100px 0;
    background: var(--surface);
}

.how-it-works h2 {
    text-align: center;
    margin-bottom: 60px;
}

.timeline {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--primary-light));
}

.timeline-step {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-step:last-child {
    margin-bottom: 0;
}

.timeline-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.timeline-content {
    flex: 1;
    padding-top: 8px;
}

.timeline-content h3 {
    margin-bottom: 8px;
}

.timeline-content p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

/* Code Block Style */
.code-block {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px 20px;
    font-family: 'JetBrains Mono', 'SF Mono', Monaco, monospace;
    font-size: 0.9rem;
    color: var(--success);
    overflow-x: auto;
}

.code-block code {
    color: var(--success);
}

/* Pricing Section */
.pricing-section {
    padding: 100px 0;
}

.pricing-section h2 {
    text-align: center;
    margin-bottom: 16px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

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

@media (max-width: 600px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

.pricing-card {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: 20px;
    padding: 32px;
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 420px;
}

.pricing-card:hover {
    transform: translateY(-4px);
}

.pricing-card.featured {
    border-color: var(--primary);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.1) 0%, var(--surface) 100%);
}

.pricing-card .badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.pricing-card .price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
}

.pricing-card .price-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 24px;
    flex-grow: 1;
}

.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 0.95rem;
}

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

.pricing-features li .check {
    color: var(--success);
}

.pricing-features li .cross {
    color: var(--text-muted);
}

/* FAQ Section */
.faq-section {
    padding: 100px 0;
    background: var(--surface);
}

.faq-section h2 {
    text-align: center;
    margin-bottom: 60px;
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-item h4 {
    padding: 20px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

.faq-item p {
    padding: 0 24px 20px;
    color: var(--text-light);
    font-size: 0.95rem;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
}

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

.cta-section p {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

/* Footer */
.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-top: 16px;
}

.footer-links h4 {
    color: var(--text);
    margin-bottom: 20px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a {
    color: var(--text-muted);
    text-decoration: none;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 60px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-box {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 48px;
    border-radius: 20px;
}

.login-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 32px;
}

.login-logo .logo-img {
    height: 48px;
    width: auto;
}

.login-box h1 {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 8px;
}

.login-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text);
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    color: var(--text);
    transition: border-color 0.2s;
}

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

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

.hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 8px;
}

.login-footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 24px;
}

/* Alert Messages */
.alert {
    padding: 14px 18px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    color: var(--warning);
}

/* Dashboard */
.dashboard {
    padding: 120px 0 60px;
}

.dashboard-header {
    margin-bottom: 40px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.dashboard-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
}

.dashboard-card h3 {
    margin-bottom: 16px;
    font-size: 1rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.status-badge.free {
    background: rgba(100, 116, 139, 0.2);
    color: var(--text-light);
}

.status-badge.pro {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

/* Legal Pages */
.legal-page {
    padding: 120px 0 60px;
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h1 {
    margin-bottom: 40px;
}

.legal-content h2 {
    font-size: 1.5rem;
    margin-top: 40px;
    margin-bottom: 16px;
}

.legal-content p {
    color: var(--text-light);
    margin-bottom: 16px;
}

.legal-content ul {
    margin-left: 24px;
    margin-bottom: 16px;
    color: var(--text-light);
}

.legal-content li {
    margin-bottom: 8px;
}

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}