:root {
    --primary: #4ea89a;
    --primary-dark: #3e8a7d;
    --primary-light: #6bc4b6;
    --primary-subtle: rgba(78, 168, 154, 0.08);
    --primary-glow: rgba(78, 168, 154, 0.25);
    --bg-cream: #fafaf8;
    --bg-white: #ffffff;
    --text-dark: #1a1f25;
    --text-body: #3d4550;
    --text-muted: #6b7280;
    --border: rgba(78, 168, 154, 0.15);
    --shadow-soft: 0 4px 24px rgba(30, 41, 59, 0.06);
    --shadow-hover: 0 12px 40px rgba(78, 168, 154, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-cream);
    color: var(--text-body);
    line-height: 1.7;
    overflow-x: hidden;
}

.serif {
    font-family: 'Instrument Serif', Georgia, serif;
}

/* Geometric Background Pattern */
.geo-pattern {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
    background-image:
        radial-gradient(circle at 20% 80%, var(--primary-subtle) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--primary-subtle) 0%, transparent 50%);
}

.geo-pattern::before {
    content: '';
    position: absolute;
    top: 10%;
    right: 5%;
    width: 300px;
    height: 300px;
    border: 1px solid var(--border);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.geo-pattern::after {
    content: '';
    position: absolute;
    bottom: 20%;
    left: 8%;
    width: 200px;
    height: 200px;
    border: 1px solid var(--border);
    transform: rotate(45deg);
    animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.25rem 2rem;
    background: rgba(250, 250, 248, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-dark);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.logo-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 6px;
}

.logo-text {
    font-weight: 600;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px var(--primary-glow);
}

.nav-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--primary-glow);
}

.nav-link-new {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white !important;
    padding: 0.35rem 0.85rem;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
 
    letter-spacing: 0.05em;
    box-shadow: 0 2px 8px var(--primary-glow);
    transition: all 0.3s ease;
}

.nav-link-new::after {
    display: none;
}

.nav-link-new:hover {
    color: white !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--primary-glow);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 6rem;
    z-index: 1;
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    animation: slideUp 0.8s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-subtle);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--primary-dark);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero-badge svg {
    width: 16px;
    height: 16px;
}

.hero h1 {
    font-family: 'Instrument Serif', Georgia, serif;
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero h1 em {
    font-style: italic;
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 500px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.75rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 16px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px var(--primary-glow);
}

.btn-secondary {
    background: var(--bg-white);
    color: var(--text-dark);
    border: 1px solid var(--border);
}

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

.btn svg {
    width: 20px;
    height: 20px;
}

.hero-platforms {
    margin-top: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.hero-platforms span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.platform-icons {
    display: flex;
    gap: 1rem;
}

.platform-icon {
    width: 32px;
    height: 32px;
    color: var(--text-muted);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.platform-icon:hover {
    color: var(--primary);
    opacity: 1;
}

/* Hero Visual */
.hero-visual {
    position: relative;
    animation: slideUp 0.8s ease-out 0.2s both;
}

.hero-image-container {
    position: relative;
    background: linear-gradient(145deg, var(--bg-white) 0%, var(--primary-subtle) 100%);
    border-radius: 16px;
    padding: 0.75rem;
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--border);
    overflow: hidden;
}

.hero-app-image {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    display: block;
}

.floating-card {
    position: absolute;
    background: var(--bg-white);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: floatCard 4s ease-in-out infinite;
}

.floating-card-1 {
    top: 8%;
    right: -15px;
    animation-delay: 0s;
}

.floating-card-2 {
    bottom: 12%;
    left: -20px;
    animation-delay: 1s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.floating-card-icon {
    width: 36px;
    height: 36px;
    background: var(--primary-subtle);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.floating-card-icon svg {
    width: 20px;
    height: 20px;
}

.floating-card-text {
    font-size: 0.85rem;
}

.floating-card-text strong {
    display: block;
    color: var(--text-dark);
    font-weight: 600;
}

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

/* Features Section */
.features {
    position: relative;
    padding: 8rem 2rem;
    z-index: 1;
    background: var(--bg-white);
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-title {
    font-family: 'Instrument Serif', Georgia, serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--bg-cream);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid transparent;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-subtle) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover {
    border-color: var(--border);
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card > * {
    position: relative;
    z-index: 1;
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.feature-description {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* How It Works Section */
.how-it-works {
    position: relative;
    padding: 8rem 2rem;
    z-index: 1;
    background: linear-gradient(180deg, var(--bg-cream) 0%, var(--bg-white) 100%);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 4rem;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    top: 45px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
    opacity: 0.3;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 90px;
    height: 90px;
    background: var(--bg-white);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
}

.step:hover .step-number {
    background: var(--primary);
    transform: scale(1.1);
}

.step:hover .step-number svg {
    color: white;
}

.step-number svg {
    width: 36px;
    height: 36px;
    color: var(--primary);
    transition: color 0.3s ease;
}

.step-label {
    position: absolute;
    top: -10px;
    right: calc(50% - 60px);
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
}

.step-title {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.step-description {
    font-size: 0.95rem;
    color: var(--text-muted);
    max-width: 280px;
    margin: 0 auto;
}

/* Changelog Section */
.changelog {
    position: relative;
    padding: 6rem 2rem;
    z-index: 1;
    background: var(--bg-white);
}

.changelog-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.changelog-version {
    background: var(--bg-cream);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.changelog-version:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.changelog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.changelog-version-number {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.changelog-date {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.changelog-changes {
    list-style: none;
    padding: 0;
    margin: 0;
}

.changelog-changes li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    color: var(--text-body);
    line-height: 1.6;
}

.changelog-changes li:last-child {
    margin-bottom: 0;
}

.changelog-changes li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6rem;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

/* CTA Section */
.cta {
    position: relative;
    padding: 8rem 2rem;
    z-index: 1;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.cta::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.cta-inner {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta h2 {
    font-family: 'Instrument Serif', Georgia, serif;
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 400;
    color: white;
    margin-bottom: 1.5rem;
}

.cta p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-white {
    background: white;
    color: var(--primary-dark);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    transform: translateY(-2px);
}

/* Footer */
footer {
    background: var(--text-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 4rem 2rem;
    position: relative;
    z-index: 1;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: white;
}

.footer-logo .logo-icon {
    background: var(--primary);
}

.footer-logo .logo-text {
    font-weight: 600;
    font-size: 1.25rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

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

.footer-copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-dark);
}

.mobile-menu-btn svg {
    width: 24px;
    height: 24px;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-platforms {
        justify-content: center;
    }

    .hero-visual {
        max-width: 600px;
        margin: 0 auto;
    }

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        border-top: 1px solid var(--border);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 0.75rem 1rem;
        border-radius: 8px;
    }

    .nav-links a:hover {
        background: var(--bg-cream);
    }

    .nav-cta {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    nav .nav-inner {
        position: relative;
    }

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

    .steps {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .steps::before {
        display: none;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .floating-card {
        display: none;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}