@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-color-base: #0E1012; 
    --text-color: #E0E0E0;
    --text-color-secondary: #A0A0A0;
    --accent-color: #f280ca;
    --accent-color-darker: #d961a9;
    --accent-color-hover: #f594d3;
    --border-color: #202225; 
    --card-bg: #15171A; 
    --code-bg: #1B1D20; 
    --header-bg: rgba(14, 16, 18, 0.75);
    --header-height: 70px;
    --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --transition-fast: 0.2s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.3); 
    --shadow-md: 0 5px 15px rgba(0,0,0,0.4); 
    --preview-gif-highlight: #44624a; 
    --shadow-lg-preview: 0 8px 25px rgba(68, 98, 74, 0.45);
    --cta-button-text-color: #080707;
    --code-inline-bg: rgba(242, 128, 202, 0.1);
    --code-inline-border: rgba(242, 128, 202, 0.2);
    --body-gradient: radial-gradient(ellipse at 50% -50%, rgba(50, 55, 70, 0.07) 0%, transparent 70%);
}

html[data-theme="light"] {
    --bg-color-base: #F4F6F8;
    --text-color: #212529;
    --text-color-secondary: #5A6268;
    --accent-color: #44624a;
    --accent-color-darker: #304a35;
    --accent-color-hover: #5a8264;
    --border-color: #DEE2E6;
    --card-bg: #FFFFFF;
    --code-bg: #E9ECEF;
    --header-bg: rgba(244, 246, 248, 0.8);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.06); 
    --shadow-md: 0 5px 15px rgba(0,0,0,0.08); 
    --shadow-lg-preview: 0 8px 25px rgba(68, 98, 74, 0.15);
    --cta-button-text-color: #FFFFFF;
    --code-inline-bg: rgba(68, 98, 74, 0.1);
    --code-inline-border: rgba(68, 98, 74, 0.2);
    --body-gradient: radial-gradient(ellipse at 50% -50%, rgba(180, 190, 210, 0.1) 0%, transparent 70%);
}


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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    color-scheme: dark; 
}
html[data-theme="light"] {
    color-scheme: light;
}


body {
    font-family: var(--font-primary);
    background-color: var(--bg-color-base);
    background-image: var(--body-gradient); 
    background-repeat: no-repeat;
    color: var(--text-color);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1rem;
}

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

a:hover, a:focus {
    color: var(--accent-color-hover);
    text-decoration: none;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-color);
    transition: color var(--transition-normal);
}
.logo-text { 
    font-size: 1.5rem; 
    font-weight: 700; 
    color: var(--text-color);
    transition: color var(--transition-fast);
}

.hero-subheadline { 
    font-size: clamp(1.8rem, 4.5vw, 2.6rem); 
    font-weight: 500; 
    color: var(--text-color); 
    line-height: 1.4;
    margin-bottom: 2.5rem; 
    max-width: 700px; 
    margin-left:auto; 
    margin-right:auto;
    opacity: 1; 
    transition: color var(--transition-normal), opacity var(--transition-normal);
}
.section-title { 
    font-size: clamp(1.8rem, 4vw, 2.5rem); 
    margin-bottom: 0.5rem; 
    letter-spacing: 0.3px;
    overflow: hidden; 
}
.section-title .word-span {
    display: inline-block;
    opacity: 0;
    transform: translateY(25px);
    transition-property: opacity, transform;
    transition-duration: 0.5s;
    transition-timing-function: cubic-bezier(0.25, 0.8, 0.25, 1);
    padding-right: 0.15em; 
}
.section-title.is-visible .word-span {
    opacity: 1;
    transform: translateY(0);
}


.section-subtitle { 
    font-size: 1.1rem; 
    color: var(--text-color-secondary); 
    margin-bottom: 2.5rem; 
    max-width: 700px; 
    margin-left:auto; 
    margin-right:auto;
    transition: color var(--transition-normal);
}
h4 { font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--accent-color); transition: color var(--transition-normal); }

.section-padding { padding: 80px 0; }
section { transition: background-color var(--transition-normal); }


#main-header {
    background-color: var(--header-bg); 
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 0 1rem;
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

#main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo-link { 
    display: flex; 
    align-items: center;
    padding: 0.5rem 0; 
}
.logo-link:hover .logo-text {
    color: var(--accent-color-hover);
}


#nav-links-list {
    list-style: none;
    display: flex;
    align-items: center;
    height: 100%; 
}

#nav-links-list li { 
    margin-left: 1.5rem; 
    display: flex; 
    align-items: center; 
}


#nav-links-list a {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 0.2rem; 
    position: relative;
    font-size: 0.95rem;
    display: flex; 
    align-items: center; 
    transition: color var(--transition-fast);
}

#nav-links-list a:not(.social-icon-link)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px; 
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-color);
    transition: width var(--transition-normal), background-color var(--transition-normal);
}

#nav-links-list a:not(.social-icon-link):hover::after,
#nav-links-list a:not(.social-icon-link).active::after {
    width: 100%;
}
#nav-links-list a:not(.social-icon-link).active {
    color: var(--accent-color);
}
#nav-links-list a:not(.social-icon-link).active::after {
    background-color: var(--accent-color);
}

#nav-links-list a:hover, #nav-links-list a:focus { 
    color: var(--accent-color-hover); 
}
.social-icon-link { 
    line-height: 0; 
    padding: 0.6rem; 
}
.social-icon { 
    fill: var(--text-color); 
    transition: fill var(--transition-fast); 
    width: 20px; 
    height: 20px; 
}
.social-icon-link:hover .social-icon, .social-icon-link:focus .social-icon { fill: var(--accent-color-hover); }

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
}
#theme-toggle:hover {
    background-color: rgba(127,127,127,0.1);
}
.theme-icon {
    stroke: var(--text-color);
    transition: stroke var(--transition-fast);
}
#theme-toggle:hover .theme-icon {
    stroke: var(--accent-color-hover);
}
.moon-icon { display: none; }
.sun-icon { display: block; }

html[data-theme="light"] .moon-icon { display: block; }
html[data-theme="light"] .sun-icon { display: none; }


#hamburger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}
#hamburger-menu span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: transform var(--transition-normal), opacity var(--transition-normal), background-color var(--transition-normal);
    border-radius: 1px;
}

#hero {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(rgba(14, 16, 18, 0.6), rgba(14, 16, 18, 0.95)), var(--bg-color-base);
    transition: background var(--transition-normal);
}
html[data-theme="light"] #hero {
    background: linear-gradient(rgba(244, 246, 248, 0.6), rgba(244, 246, 248, 0.95)), var(--bg-color-base);
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.hero-image-container { margin: 2.5rem auto; }
#preview-gif {
    max-width: 720px;
    width: 100%;
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 40px rgba(0,0,0,0.5), var(--shadow-lg-preview); 
    border: 1px solid var(--border-color);
    transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--cta-button-text-color); 
    padding: 0.9rem 2.2rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: background-color var(--transition-normal), color var(--transition-normal), transform var(--transition-fast), box-shadow var(--transition-normal);
    box-shadow: var(--shadow-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.5rem; 
}

.cta-button:hover, .cta-button:focus {
    background-color: var(--accent-color-hover);
    color: var(--cta-button-text-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 12px var(--accent-color-hover); 
}
html[data-theme="dark"] .cta-button:hover, html[data-theme="dark"] .cta-button:focus {
    box-shadow: 0 6px 12px rgba(242, 128, 202, 0.25);
}
html[data-theme="light"] .cta-button:hover, html[data-theme="light"] .cta-button:focus {
    box-shadow: 0 6px 12px rgba(68, 98, 74, 0.25);
    color: #FFFFFF;
}


.cta-button:active {
    transform: translateY(0px) scale(0.97);
    box-shadow: 0 2px 5px var(--accent-color);
}
html[data-theme="dark"] .cta-button:active {
    box-shadow: 0 2px 5px rgba(242, 128, 202, 0.2);
}
html[data-theme="light"] .cta-button:active {
    box-shadow: 0 2px 5px rgba(68, 98, 74, 0.2);
}


.section-header { text-align: center; margin-bottom: 3.5rem; }

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

.feature-card,
.config-location, 
.config-format,
.data-files-list li {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal), background-color var(--transition-normal);
}
.feature-card { padding: 2rem 1.5rem; }
.config-location, .config-format { padding: 1.5rem; flex: 1; min-width: 280px; }
.data-files-list li { padding: 1rem 1.5rem; margin-bottom: 1rem; }


.feature-card:hover, .feature-card:focus-within,
.config-location:hover, .config-location:focus-within,
.config-format:hover, .config-format:focus-within {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15); 
    border-color: var(--accent-color-darker);
}
.data-files-list li:hover {
    border-color: var(--accent-color);
}

html[data-theme="dark"] .feature-card:hover, html[data-theme="dark"] .feature-card:focus-within,
html[data-theme="dark"] .config-location:hover, html[data-theme="dark"] .config-location:focus-within,
html[data-theme="dark"] .config-format:hover, html[data-theme="dark"] .config-format:focus-within {
    box-shadow: 0 8px 20px rgba(0,0,0,0.35);
}


.feature-card h4 { margin-bottom: 0.8rem; font-weight: 600; }
.feature-card p { 
    font-size: 0.95rem; 
    color: var(--text-color-secondary); 
    overflow-wrap: break-word; 
    word-wrap: break-word; 
    transition: color var(--transition-normal);
}
.feature-card code { 
    background-color: var(--code-bg); 
    color: var(--accent-color); 
    padding: 0.2em 0.4em; 
    border-radius: var(--border-radius-sm); 
    font-size: 0.85em;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

:not(pre) > code {
    background-color: var(--code-inline-bg);
    color: var(--accent-color);
    padding: 0.25em 0.5em;
    border-radius: var(--border-radius-sm);
    font-size: 0.88em;
    border: 1px solid var(--code-inline-border);
    overflow-wrap: break-word; 
    word-break: normal; 
    transition: background-color var(--transition-normal), color var(--transition-normal), border-color var(--transition-normal);
}


.usage-content { max-width: 800px; margin: 0 auto; }
.usage-steps { list-style-position: outside; padding-left: 1.5rem; }
.usage-steps li { margin-bottom: 2rem; }
.usage-steps p { margin-bottom: 0.5rem; }
.usage-steps ul { list-style-type: disc; margin-top: 0.75rem; margin-left: 1.25rem; padding-left: 0.5rem;}
.usage-steps ul li { margin-bottom: 0.4rem; font-size: 0.95rem; }
.usage-steps ul li strong { color: var(--accent-color); font-weight: 500; transition: color var(--transition-normal); }
.usage-steps small { color: var(--text-color-secondary); font-size: 0.85rem; transition: color var(--transition-normal); }

pre {
    background-color: var(--code-bg);
    color: var(--text-color); 
    padding: 1.25rem;
    border-radius: var(--border-radius-md);
    overflow-x: auto;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    margin: 0.75rem 0;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
    transition: background-color var(--transition-normal), color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}
html[data-theme="dark"] pre {
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.3);
    color: #D0D0D0;
}

code.language-shell { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace; }


.config-details { display: flex; flex-wrap: wrap; gap: 2rem; margin-bottom: 2.5rem; justify-content: center; }
.config-location h4, .config-format h4 { margin-top:0; }
#configuration h4 { text-align: left; color: var(--text-color); font-size: 1.25rem; margin-top: 2rem; margin-bottom: 0.75rem;}
#configuration .section-header h4 { color: var(--accent-color); }
.config-variables-list dt { font-weight: 600; color: var(--text-color); margin-top: 1.25rem; font-size: 1.05rem; transition: color var(--transition-normal);}
.config-variables-list dd { 
    margin-left: 0; 
    color: var(--text-color-secondary); 
    font-size: 0.95rem; 
    border-left: 3px solid var(--accent-color); 
    padding-left: 1rem; 
    margin-top: 0.25rem;
    transition: color var(--transition-normal), border-color var(--transition-normal);
}

.data-files-list { list-style: none; padding-left: 0; max-width: 800px; margin: 0 auto; }
.data-files-list strong { color: var(--accent-color); font-weight: 500; transition: color var(--transition-normal); }

#main-footer {
    background-color: var(--bg-color-base); 
    color: var(--text-color-secondary);
    padding: 3rem 0;
    text-align: center;
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    transition: background-color var(--transition-normal), color var(--transition-normal), border-color var(--transition-normal);
}
.footer-content { display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.footer-links a { color: var(--text-color-secondary); margin: 0 0.75rem; font-weight: 500; transition: color var(--transition-normal);}
.footer-links a:hover { color: var(--accent-color-hover); }
.copyright-text { font-size: 0.85rem; }

.scroll-fade-in {
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 0.65s cubic-bezier(0.645, 0.045, 0.355, 1), transform 0.65s cubic-bezier(0.645, 0.045, 0.355, 1);
}
.scroll-fade-in.is-visible:not(.section-title) { 
    opacity: 1;
    transform: translateY(0);
}
.section-title.is-visible { 
    opacity: 1;
    transform: translateY(0);
}

.feature-card.scroll-fade-in { transition-delay: calc(var(--card-index) * 0.07s); }


@media (max-width: 768px) {
    :root { --header-height: 60px; }
    .section-padding { padding: 60px 0; }

    #nav-links-list li { margin-left: 1rem; } 
    #nav-links-list li:nth-last-child(2) { margin-left: 1rem; } 


    #nav-links-list {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: var(--card-bg); 
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        padding: 1rem 0;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        transition: background-color var(--transition-normal), border-color var(--transition-normal);
    }
    #nav-links-list.active { display: flex; }
    #nav-links-list li { margin: 0; width: 100%; text-align: center; }
    #nav-links-list a { display: block; padding: 1rem; border-bottom: 1px solid var(--border-color); width:100%; }
    #nav-links-list li:last-child a { border-bottom: none; } 
    #nav-links-list a:not(.social-icon-link)::after { display: none; }
    #nav-links-list a:not(.social-icon-link).active {
       background-color: var(--accent-color-darker);
       color: #FFFFFF;
    }
    .social-icon-link { padding: 1rem !important; }
    #theme-toggle { margin: 0.5rem auto; } 


    #hamburger-menu { display: block; }
    #hamburger-menu.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    #hamburger-menu.active span:nth-child(2) { opacity: 0; }
    #hamburger-menu.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .hero-subheadline { font-size: 1.6rem; } 
    #preview-gif { max-width: 90%; }
    .cta-button { padding: 0.8rem 1.8rem; font-size: 0.95rem; }

    .features-grid { grid-template-columns: 1fr; }
    .config-details { flex-direction: column; }
}