/* ===========================
   RESET & VARIABLES
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #0ea5e9;
    --accent: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.2);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Plus Jakarta Sans', 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 120px 0;
    --container-padding: 0 24px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    line-height: 1.7;
    background: var(--bg-primary);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ===========================
   NAVIGATION
   =========================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    transition: var(--transition);
}

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

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 32px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 48px;
}

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

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.nav-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===========================
   BUTTONS
   =========================== */
.btn-primary,
.btn-secondary,
.btn-outline {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 15px;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    color: var(--text-white);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.5);
}

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

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

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

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

.btn-large {
    padding: 16px 40px;
    font-size: 17px;
    border-radius: 12px;
}

/* ===========================
   HERO SECTION
   =========================== */
.hero {
    padding: 100px 0 120px;
    background: linear-gradient(180deg, #fafbff 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-title {
    font-size: 56px;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #1e293b 0%, #4f46e5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-bullets {
    list-style: none;
    margin-bottom: 40px;
}

.hero-bullets li {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 500;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.hero-proof {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 500;
}

.hero-visual {
    position: relative;
}

.dashboard-preview {
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: var(--transition);
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.dashboard-header {
    background: #f8fafc;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.dashboard-tabs {
    display: flex;
    gap: 12px;
}

.tab {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.tab.active {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.dashboard-body {
    padding: 24px;
}

.kanban-columns {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.kanban-column {
    background: #f8fafc;
    padding: 12px;
    border-radius: 10px;
}

.column-header {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.card {
    background: white;
    padding: 12px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
    box-shadow: var(--shadow-sm);
    border-left: 3px solid var(--primary-light);
}

.card.highlight {
    border-left-color: var(--success);
    background: #f0fdf4;
}

/* ===========================
   SOCIAL PROOF
   =========================== */
.social-proof {
    padding: 80px 0;
    background: var(--bg-secondary);
    text-align: center;
}

.social-proof-text {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 32px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.logos-grid {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.logo-item {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    opacity: 0.7;
    transition: var(--transition);
}

.logo-item:hover {
    opacity: 1;
    color: var(--primary);
}

.stats-row {
    display: flex;
    justify-content: center;
    gap: 80px;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-number {
    font-size: 40px;
    font-weight: 800;
    color: var(--primary);
}

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

/* ===========================
   SECTIONS COMMUNES
   =========================== */
.section-title {
    font-size: 48px;
    text-align: center;
    margin-bottom: 64px;
    line-height: 1.2;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.section-cta {
    text-align: center;
    margin-top: 48px;
}

/* ===========================
   PROBLEM SECTION
   =========================== */
.problem-section {
    padding: var(--section-padding);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.problem-card {
    text-align: center;
    padding: 40px 32px;
}

.problem-icon {
    font-size: 56px;
    margin-bottom: 24px;
}

.problem-title {
    font-size: 24px;
    margin-bottom: 16px;
}

.problem-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.problem-result {
    font-size: 15px;
    color: var(--text-primary);
    padding: 16px;
    background: #fef2f2;
    border-radius: 8px;
    border-left: 3px solid #ef4444;
}

/* ===========================
   SOLUTION SECTION
   =========================== */
.solution-section {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.solution-visual {
    margin-bottom: 64px;
    position: relative;
}

.solution-screenshot {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.screenshot-mockup {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    padding: 80px;
    box-shadow: var(--shadow-xl);
}

.mockup-content {
    background: white;
    border-radius: 12px;
    padding: 120px;
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    font-weight: 500;
}

.screenshot-annotations {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.annotation {
    position: absolute;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    background: white;
    padding: 8px 16px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    white-space: nowrap;
}

.value-props {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.value-prop {
    text-align: center;
}

.value-prop-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.value-prop-title {
    font-size: 22px;
    margin-bottom: 12px;
}

.value-prop-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===========================
   HOW IT WORKS
   =========================== */
.how-it-works {
    padding: var(--section-padding);
}

.steps-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto 48px;
}

.step {
    flex: 1;
    text-align: center;
    padding: 40px 32px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    position: relative;
}

.step:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.step-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 36px;
    height: 36px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.step-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.step-title {
    font-size: 22px;
    margin-bottom: 12px;
}

.step-description {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-arrow {
    font-size: 32px;
    color: var(--primary);
    font-weight: 300;
}

/* ===========================
   FEATURES SECTION
   =========================== */
.features-section {
    padding: var(--section-padding);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 32px 24px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.feature-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 18px;
    margin-bottom: 12px;
}

.feature-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===========================
   USE CASES
   =========================== */
.use-cases-section {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.use-case-card {
    background: white;
    padding: 40px 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.use-case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.use-case-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.use-case-title {
    font-size: 22px;
    margin-bottom: 20px;
}

.use-case-quote {
    font-size: 16px;
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
    padding-left: 20px;
    border-left: 3px solid var(--primary);
}

.use-case-benefit {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
}

/* ===========================
   PRICING
   =========================== */
.pricing-section {
    padding: var(--section-padding);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 48px;
}

.pricing-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.08) translateY(-8px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.pricing-name {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 8px;
}

.price {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
}

.period {
    font-size: 16px;
    color: var(--text-secondary);
}

.pricing-features {
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 12px 0;
    font-size: 15px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--bg-secondary);
}

.pricing-ideal {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-weight: 500;
}

.pricing-card .btn-primary,
.pricing-card .btn-outline {
    width: 100%;
    justify-content: center;
}

.pricing-notes {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-notes p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.pricing-notes a {
    color: var(--primary);
    font-weight: 600;
}

.pricing-notes a:hover {
    text-decoration: underline;
}

/* ===========================
   FINAL CTA
   =========================== */
.final-cta {
    padding: var(--section-padding);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -25%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.final-cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.final-cta-title {
    font-size: 48px;
    color: white;
    margin-bottom: 20px;
}

.final-cta-subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

.final-cta .btn-primary {
    background: white;
    color: var(--primary);
    margin-bottom: 16px;
}

.final-cta .btn-primary:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

.final-cta-details {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 64px;
}

.testimonial {
    max-width: 700px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.testimonial-text {
    font-size: 18px;
    color: white;
    font-style: italic;
    margin-bottom: 24px;
    line-height: 1.6;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 56px;
    height: 56px;
    background: white;
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
}

.author-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    text-align: left;
}

.author-name {
    font-size: 16px;
    font-weight: 700;
    color: white;
}

.author-role {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

/* ===========================
   FOOTER
   =========================== */
.footer {
    background: var(--bg-dark);
    padding: 48px 0 32px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: white;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-copyright {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 44px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .kanban-columns {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: 32px;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-links {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-actions .btn-primary,
    .nav-actions .btn-secondary {
        width: 100%;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .problems-grid,
    .value-props,
    .use-cases-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-preview {
        transform: none;
    }
    
    .kanban-columns {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn-large {
        width: 100%;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .final-cta-title {
        font-size: 32px;
    }
}