/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #ffffff;
    --color-text: #0a0a0a;
    --color-text-light: #666666;
    --color-accent: #10b981;
    --color-accent-light: #34d399;
    --color-accent-dark: #059669;
    --color-border: #e5e5e5;
    --color-subtle: #f0fdf4;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.nav-cta {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-text);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.nav-cta:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    border-color: var(--color-accent);
}

/* Opening Section */
.opening {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 40px;
    background: linear-gradient(180deg, #f0fdf4 0%, #ffffff 100%);
    position: relative;
}

.opening-content {
    text-align: center;
    max-width: 900px;
}

.opening-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 2rem;
    color: var(--color-text);
}

.opening-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--color-text-light);
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
}

/* Problem Section */
.problem {
    padding: 120px 0;
    background: var(--color-bg);
}

.content-block {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.content-block.reverse {
    grid-template-columns: 1fr 1fr;
}

.content-block.reverse .content-text {
    order: 2;
}

.content-block.reverse .content-visual {
    order: 1;
}

.content-text {
    max-width: 600px;
}

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.content-text h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.content-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-light);
}

/* Solution Section */
.solution {
    padding: 120px 0;
    background: var(--color-subtle);
}

.content-visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
}

.float-item {
    position: absolute;
    width: 120px;
    height: 120px;
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.float-item:nth-child(1) {
    top: 10%;
    left: 20%;
    animation-delay: 0s;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
}

.float-item:nth-child(2) {
    top: 50%;
    right: 15%;
    animation-delay: 1.5s;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
    width: 80px;
    height: 80px;
}

.float-item:nth-child(3) {
    bottom: 20%;
    left: 30%;
    animation-delay: 3s;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, transparent 70%);
    width: 100px;
    height: 100px;
}

.float-item:nth-child(4) {
    top: 30%;
    right: 30%;
    animation-delay: 4.5s;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    width: 60px;
    height: 60px;
}

/* Capabilities Section */
.capabilities {
    padding: 120px 0;
    background: var(--color-bg);
}

.capabilities-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px 80px;
}

.capability-item {
    max-width: 500px;
}

.capability-number {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    letter-spacing: 0.1em;
}

.capability-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.capability-item p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-light);
}

/* Process Section */
.process {
    padding: 120px 0;
    background: var(--color-subtle);
}

.process-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 40px;
}

.process-container .section-label {
    display: block;
    text-align: center;
    margin-bottom: 4rem;
}

.process-steps {
    position: relative;
}

.process-step {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 4rem;
}

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

.step-line {
    position: absolute;
    left: 0;
    top: 0;
    bottom: -4rem;
    width: 1px;
    background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-border) 100%);
}

.process-step:last-child .step-line {
    display: none;
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.step-content p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-light);
}

/* Mission Section */
.mission {
    padding: 120px 0;
    background: var(--color-bg);
}

.mission-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 40px;
    text-align: center;
}

.mission-text {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    line-height: 1.8;
    color: var(--color-text-light);
    font-weight: 400;
}

/* Download Section */
.download {
    padding: 120px 0;
    background: var(--color-text);
    color: var(--color-bg);
}

.download-content {
    max-width: 700px;
    margin: 0 auto;
    padding: 0 40px;
    text-align: center;
}

.download-content h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
    color: var(--color-bg);
}

.download-content > p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.download-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--color-bg);
    color: var(--color-text);
    padding: 1rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
    margin-bottom: 1.5rem;
}

.download-button:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.3);
}

.download-note {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

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

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.footer-info {
    text-align: right;
}

.footer-info p {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}

.footer-info a {
    font-size: 0.875rem;
    color: var(--color-text-light);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-info a:hover {
    color: var(--color-accent);
}

/* Animations */
@keyframes float {
    0%, 100% {
        transform: translateY(0px) translateX(0px);
    }
    33% {
        transform: translateY(-20px) translateX(10px);
    }
    66% {
        transform: translateY(10px) translateX(-10px);
    }
}

/* Responsive Design */
@media (max-width: 968px) {
    .content-block,
    .content-block.reverse {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .content-block.reverse .content-text,
    .content-block.reverse .content-visual {
        order: initial;
    }

    .capabilities-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .process-step {
        padding-left: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 24px;
    }

    .opening {
        padding: 0 24px;
    }

    .problem,
    .solution,
    .capabilities,
    .process,
    .mission,
    .download {
        padding: 80px 0;
    }

    .content-block {
        padding: 0 24px;
    }

    .capabilities-container,
    .process-container,
    .mission-content,
    .download-content {
        padding: 0 24px;
    }

    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

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

@media (max-width: 480px) {
    .opening {
        min-height: 80vh;
    }

    .content-visual {
        height: 300px;
    }

    .float-item {
        width: 80px;
        height: 80px;
    }

    .float-item:nth-child(2),
    .float-item:nth-child(3),
    .float-item:nth-child(4) {
        width: 60px;
        height: 60px;
    }
}