:root {
    --bg-color: #F8FAFC;
    --container-bg: #FFFFFF;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --accent: #2563EB;
    --accent-hover: #1D4ED8;
    --border-color: #E2E8F0;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-color: #0F172A;
    --container-bg: #1E293B;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --border-color: #334155;
    --accent: #3B82F6;
    --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'DM Sans', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    transition: var(--transition);
}

h1, h2 { 
    font-family: 'Space Grotesk', sans-serif;
    margin: 0; 
}

.container {
    max-width: 900px;
    width: 100%;
    background-color: var(--container-bg);
    padding: 50px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    text-align: center;
}

header { 
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px; 
}

.logo-area { 
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon img { 
    max-width: 150px; 
    width: 100%; 
    height: auto; 
    margin-bottom: 5px;
    min-width: 40px; 
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    transition: var(--transition);
}

[data-theme="dark"] .theme-toggle::after { content: "☀️"; }
[data-theme="light"] .theme-toggle::after { content: "🌙"; }

.tagline { 
    font-size: 3.2rem;
    margin: 15px 0 25px;
    letter-spacing: -2px; 
}

.download-group {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--accent);
    color: white;
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: var(--transition);
    text-shadow: 3px 2px 2px  black;
}

.download-btn:hover { 
    transform: translateY(-3px); 
    background: var(--accent-hover); 
}

.download-btn.linux {
    background-color: #1F1F1F;
    border: 1px solid #1F1F1F;
}

.download-btn.linux:hover {
    background-color: #FFF463;
    border-color: #FFF463;
}

.download-btn.android {
    background-color: #a4c639;
    border: 1px solid #a4c639;
}

.download-btn.android:hover {
    background-color: #839e2e;
    border-color: #839e2e;
}

.download-icon img {
    max-width: 20px; 
    width: 100%; 
    height: auto; 
    margin-bottom: 5px;
    min-width: 5px;
}

.download-btn.windows .download-icon img {
    box-shadow: 2px 2px 1px rgba(0,0,0,0.5) !important;
}

.download-btn.linux .download-icon img {
    max-width: 28px;
    filter: drop-shadow(2px 2px 1px rgba(0,0,0,0.5));
}
.download-btn.android .download-icon img {
    max-width: 28px;
    filter: drop-shadow(2px 2px 1px rgba(0,0,0,0.5));
}

.features { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr);
    gap: 20px; 
    margin-top: 50px;
}

.feature-card { 
    background: var(--bg-color);
    padding: 25px; 
    border-radius: 16px; 
    border: 1px solid var(--border-color);
    text-align: left; 
}

.preview-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    margin: 80px auto;
    max-width: 1000px;
    padding-bottom: 40px;
}

/* LAPTOP */
.laptop {
    position: relative;
    width: 600px;
    z-index: 1;
}

.laptop-screen {
    background: #000;
    border: 12px solid #333;
    border-radius: 15px 15px 0 0;
    height: 350px;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow);
}

.laptop-base {
    background: #555;
    height: 12px;
    border-radius: 0 0 15px 15px;
    width: 110%;
    margin-left: -5%;
    position: relative;
}

/*  PHONE */
.phone {
    position: absolute;
    right: 10%;
    bottom: 20px;
    width: 160px;
    height: 320px;
    background: #000;
    border: 8px solid #333;
    border-radius: 30px;
    z-index: 2;
    box-shadow: 20px 20px 50px rgba(0,0,0,0.3);
    transition: var(--transition);
    overflow: hidden;
}

.phone:hover {
    transform: translateY(-10px) rotate(-2deg);
}

.phone-screen {
    background: var(--container-bg);
    height: 100%;
    border-radius: 22px;
    overflow: hidden;
    padding: 10px;
}

.desktop-dark-image, 
.desktop-light-image,
.mobile-dark-image,
.mobile-light-image {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: fill;
}

[data-theme="dark"] .desktop-dark-image {
    display: block;
}

[data-theme="light"] .desktop-light-image {
    display: block;
}

[data-theme="dark"] .mobile-dark-image {
    display: block;
}

[data-theme="light"] .mobile-light-image {
    display: block;
}

/* Language Controls/Toggle */

.controls {
    display: flex;
    gap: 12px;
    align-items: center;
}

.lang-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.lang-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(37, 99, 235, 0.05);
}

.tagline span {
    color: var(--accent);
}

@media (max-width: 850px) {

    .preview-container {
        flex-direction: column;
        align-items: center;
        padding: 0 10px;
        gap: 0;
    }

    .laptop { 
        width: 95%;
        max-width: 550px; 
        margin: 0 auto;
    }

    .laptop-screen {
        height: auto; 
        aspect-ratio: 16 / 10;
        border-width: 8px;
    }

    .laptop-base {
        height: 8px;
        width: 104%;
        margin-left: -2%;
    }

    .phone { 
        position: relative;
        right: auto;
        bottom: auto;
        width: 45%;
        max-width: 180px;
        min-width: 140px;
        aspect-ratio: 9 / 19;
        height: auto; 
        margin: -40px auto 0;
        border-width: 6px;
        box-shadow: 0 15px 30px rgba(0,0,0,0.3);
    }

    .phone-screen {
        padding: 5px;
    }

    .tagline { 
        font-size: 2.4rem; 
        padding: 0 15px;
    }

    .features { 
        grid-template-columns: 1fr; 
        gap: 20px;
        margin-top: 40px;
        width: 100%;
    }

    .feature-card {
        width: 100%;
        box-sizing: border-box;
        padding: 24px;
        border-radius: 20px;
        text-align: left;
        display: flex;
        flex-direction: column;
        justify-content: center;
        min-height: auto;
    }
}