/* ================================
   CSS Variables & Reset
================================ */
:root {
    --color-deep-navy: #1E3A5F;
    --color-primary-blue: #4A7BF7;
    --color-light-blue: #7BA4F7;
    --color-soft-periwinkle: #A8C0F7;
    --color-near-white: #F8FAFC;
    --color-white: #FFFFFF;
    --color-gray-50: #F8FAFC;
    --color-gray-100: #F1F5F9;
    --color-gray-200: #E2E8F0;
    --color-gray-300: #CBD5E1;
    --color-gray-400: #94A3B8;
    --color-gray-500: #64748B;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1E293B;
    --color-gray-900: #0F172A;
    
    --gradient-primary: linear-gradient(135deg, #4A7BF7 0%, #1E3A5F 100%);
    --gradient-light: linear-gradient(180deg, #F8FAFC 0%, #EEF2FF 100%);
    --gradient-text: linear-gradient(135deg, #4A7BF7 0%, #2563EB 100%);
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
    --spacing-3xl: 8rem;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.1);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

/* ================================
   Utility Classes
================================ */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.centered {
    text-align: center;
}

/* ================================
   Typography
================================ */
.section-headline {
    font-size: 2.75rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.section-headline.centered {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* ================================
   Buttons
================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.75rem;
    font-family: var(--font-family);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: 0 2px 8px rgba(74, 123, 247, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(74, 123, 247, 0.35);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-200);
}

.btn-secondary:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-300);
}

.btn-large {
    padding: 1rem 2.25rem;
    font-size: 1rem;
}

/* ================================
   Navigation
================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0.875rem var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo-full {
    height: 48px;
    width: auto;
    max-width: 140px;
    object-fit: contain;
}

.nav-cta {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 123, 247, 0.3);
}

/* ================================
   Hero Section
================================ */
.hero {
    position: relative;
    padding-top: 140px;
    padding-bottom: var(--spacing-3xl);
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    right: 0;
    width: 60%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        120deg,
        var(--color-white) 0%,
        var(--color-white) 30%,
        rgba(232, 240, 255, 0.9) 60%,
        rgba(200, 220, 255, 0.7) 100%
    );
}

.hero-bg-color {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(
        ellipse at center,
        rgba(74, 123, 247, 0.12) 0%,
        rgba(74, 123, 247, 0.05) 40%,
        transparent 70%
    );
    z-index: -1;
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-headline {
    font-size: 3.75rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.03em;
}

.hero-subheadline {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    max-width: 480px;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Hero Screenshot */
.hero-screenshot {
    max-width: 420px;
    width: 100%;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.hero-screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

/* Missions Card */
.hero-visual {
    display: flex;
    justify-content: center;
}

.missions-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-lg);
    width: 100%;
    max-width: 360px;
    border: 1px solid var(--color-gray-100);
}

.missions-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-gray-100);
}

.missions-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-gray-900);
}

.mission-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.mission-item:last-child {
    margin-bottom: 0;
}

.mission-item:hover {
    background: var(--color-gray-100);
}

.mission-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mission-name {
    font-weight: 600;
    color: var(--color-gray-800);
    font-size: 0.9rem;
}

.mission-assignee {
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

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

.status-done {
    background: #22C55E;
}

.status-progress {
    background: #F59E0B;
}

.status-pending {
    background: var(--color-gray-300);
}

/* ================================
   Translation Section
================================ */
.translation {
    padding: var(--spacing-2xl) 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-100);
}

.translation-content {
    text-align: center;
}

.translation-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.translation-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.1rem;
}

.translation-old {
    color: var(--color-gray-400);
    text-decoration: line-through;
    font-weight: 500;
}

.translation-arrow {
    color: var(--color-gray-300);
    font-size: 1.25rem;
}

.translation-new {
    color: var(--color-primary-blue);
    font-weight: 600;
}

.translation-subtext {
    font-size: 1rem;
    color: var(--color-gray-500);
    font-style: italic;
}

/* ================================
   Problem Section
================================ */
.problem {
    padding: var(--spacing-3xl) 0;
    background: var(--color-white);
}

.problem-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.problem-content .section-headline {
    text-align: left;
}

.problem-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.problem-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.problem-marker {
    width: 8px;
    height: 8px;
    background: var(--color-primary-blue);
    border-radius: 50%;
    margin-top: 8px;
    flex-shrink: 0;
}

.problem-item p {
    font-size: 1.1rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

.problem-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.problem-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* ================================
   Solution Section
================================ */
.solution {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-light);
}

.solution-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.solution-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.solution-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.solution-content .section-headline {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.solution-description {
    font-size: 1.15rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.solution-description strong {
    color: var(--color-primary-blue);
    font-weight: 600;
}

.solution-flow {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.flow-step {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
}

.flow-step-done {
    background: var(--color-primary-blue);
    border-color: var(--color-primary-blue);
}

.flow-step-done .flow-label {
    color: var(--color-white);
}

.flow-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-gray-700);
}

.flow-arrow {
    color: var(--color-gray-400);
    font-size: 1.25rem;
}

/* ================================
   Dashboard Preview
================================ */
.dashboard-preview {
    padding: var(--spacing-xl) 0 var(--spacing-3xl);
    background: var(--gradient-light);
}

.dashboard-image {
    max-width: 1000px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-gray-200);
}

.dashboard-image img {
    width: 100%;
}

/* ================================
   Features Section
================================ */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--color-white);
}

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

.feature-card {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.feature-card:hover {
    background: var(--color-white);
    border-color: var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--color-gray-600);
    line-height: 1.7;
    font-size: 1rem;
}

/* ================================
   How It Works Section
================================ */
.how-it-works {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-light);
}

.steps-container {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--spacing-sm);
}

.step {
    text-align: center;
    max-width: 280px;
    padding: var(--spacing-lg);
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    color: var(--color-white);
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.step-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.step-description {
    color: var(--color-gray-600);
    font-size: 0.95rem;
    line-height: 1.6;
}

.step-connector {
    width: 60px;
    height: 2px;
    background: var(--color-gray-200);
    margin-top: 44px;
    flex-shrink: 0;
}

/* ================================
   Use Cases Section
================================ */
.use-cases {
    padding: var(--spacing-3xl) 0;
    background: var(--color-white);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.use-case-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--color-gray-100);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-gray-200);
}

.use-case-image {
    height: 160px;
    overflow: hidden;
}

.use-case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.use-case-card:hover .use-case-image img {
    transform: scale(1.05);
}

.use-case-content {
    padding: var(--spacing-md);
}

.use-case-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.use-case-description {
    color: var(--color-gray-600);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ================================
   Final CTA Section
================================ */
.final-cta {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-primary);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-headline {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.cta-subheadline {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-lg);
}

.final-cta .btn-primary {
    background: var(--color-white);
    color: var(--color-deep-navy);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.final-cta .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* ================================
   Footer
================================ */
.footer {
    padding: var(--spacing-xl) 0;
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-100);
}

.footer-content {
    text-align: center;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.footer-logo img {
    height: 38px;
    max-width: 150px;
    border-radius: var(--radius-sm);
}

.footer-tagline {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.footer-copyright {
    color: var(--color-gray-400);
    font-size: 0.875rem;
}

/* ================================
   Video Modal
================================ */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.video-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 900px;
    background: var(--color-gray-900);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transform: scale(0.95);
    transition: all var(--transition-normal);
}

.video-modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: -48px;
    right: 0;
    background: none;
    border: none;
    color: var(--color-white);
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: all var(--transition-fast);
    opacity: 0.8;
}

.modal-close:hover {
    opacity: 1;
    transform: scale(1.1);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ================================
   Responsive Design
================================ */
@media (max-width: 1024px) {

   .hero-screenshot {
    max-width: 360px;
    margin: 0 auto;
    }
    .hero-headline {
        font-size: 3rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-subheadline {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-ctas {
        justify-content: center;
    }
    
    .hero-background {
        width: 100%;
        opacity: 0.5;
    }
    
    .hero-bg-overlay {
        background: linear-gradient(180deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.8) 100%);
    }
    
    .problem-layout,
    .solution-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .problem-content .section-headline,
    .solution-content .section-headline {
        text-align: center;
    }
    
    .problem-list {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .solution-content {
        order: -1;
        text-align: center;
    }
    
    .solution-flow {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-container {
        flex-direction: column;
        align-items: center;
    }
    
    .step-connector {
        width: 2px;
        height: 40px;
        margin: 0;
    }
}

@media (max-width: 768px) {
    .hero-screenshot {
    max-width: 320px;
    }
    .hero {
        padding-top: 120px;
        min-height: auto;
        padding-bottom: var(--spacing-2xl);
    }
    
    .hero-headline {
        font-size: 2.5rem;
    }
    
    .hero-subheadline {
        font-size: 1.1rem;
    }
    
    .section-headline {
        font-size: 2rem;
    }
    
    .translation-grid {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .cta-headline {
        font-size: 2rem;
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-ctas {
        flex-direction: column;
    }
    
    .problem-image img,
    .solution-image img {
        height: 300px;
    }
}

@media (max-width: 640px) {
    .use-cases-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .hero-headline {
        font-size: 2rem;
    }
    
    .section-headline {
        font-size: 1.75rem;
    }
    
    .nav-logo-full {
        height: 38px;
        max-width: 150px;
    }
    
    .nav-cta {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .missions-card {
        max-width: 100%;
    }
    
    .step {
        padding: var(--spacing-md);
    }
}