/* ==========================================================
   AeroSphereTech Website v1.0
   Engineering Healthy Infrastructure for the AI Era
   ========================================================== */


/* ==========================================================
   Root Variables
   ========================================================== */

:root{

    --background:#050608;

    --surface:#0f1117;

    --surface-light:#181c25;

    --primary:#3aa6ff;

    --primary-light:#74c4ff;

    --text:#ffffff;

    --text-secondary:#b7c0cc;

    --border:rgba(255,255,255,.08);

    --radius:18px;

    --container:1200px;

    --reading:760px;

    --transition:.28s ease;

}


/* ==========================================================
   Reset
   ========================================================== */

*{

    margin:0;

    padding:0;

    box-sizing:border-box;

}

html{

    scroll-behavior:smooth;

}

body{

    font-family:'Inter',sans-serif;

    background:var(--background);

    color:var(--text);

    line-height:1.7;

    -webkit-font-smoothing:antialiased;

}

img{

    max-width:100%;

    display:block;

}

a{

    text-decoration:none;

    color:inherit;

}

ul{

    list-style:none;

}


/* ==========================================================
   Layout
   ========================================================== */

.container{

    width:min(var(--container),92%);

    margin:auto;

}

.narrow{

    max-width:var(--reading);

}

.section{

    padding:120px 0;

}

.section-intro{

    max-width:760px;

    margin-bottom:60px;

}


/* ==========================================================
   Typography
   ========================================================== */

h1{

    font-size:4.5rem;

    font-weight:800;

    line-height:1.05;

    letter-spacing:-2px;

    margin-bottom:30px;

}

h2{

    font-size:3rem;

    font-weight:700;

    margin-bottom:24px;

}

h3{

    font-size:1.5rem;

    margin-bottom:16px;

}

h4{

    font-size:1rem;

    font-weight:500;

    line-height:1.6;

}

p{

    color:var(--text-secondary);

    font-size:1.08rem;

    margin-bottom:24px;

}

.eyebrow{

    color:var(--primary);

    text-transform:uppercase;

    letter-spacing:3px;

    font-size:.82rem;

    font-weight:600;

    margin-bottom:18px;

}


/* ==========================================================
   Header
   ========================================================== */

header{

    position:fixed;

    top:0;

    left:0;

    width:100%;

    z-index:1000;

    backdrop-filter:blur(18px);

    background:rgba(5,6,8,.70);

    border-bottom:1px solid var(--border);

}

header .container{

    display:flex;

    justify-content:space-between;

    align-items:center;

    height:82px;

}

.logo{

    display:flex;

    align-items:center;

    gap:12px;

    font-size:1.45rem;

    font-weight:700;

    letter-spacing:.5px;

}

.logo img{

    display:block;

}

nav{

    display:flex;

    gap:40px;

}

nav a{

    color:var(--text-secondary);

    transition:var(--transition);

}

nav a:hover{

    color:white;

}

nav a.active{

    color:var(--primary);

}


/* ==========================================================
   Hero
   ========================================================== */

.hero{

    min-height:100vh;

    display:flex;

    align-items:center;

    justify-content:center;

    text-align:center;

    padding-top:80px;

    position:relative;

    background:
        radial-gradient(
            circle at 50% 30%,
            rgba(58,166,255,.12),
            transparent 55%
        ),
        linear-gradient(
            rgba(5,6,8,.82),
            rgba(5,6,8,.95)
        ),
        url("W3.png") center 60%/cover no-repeat,
        var(--background);

}

.hero-tagline{

    color:var(--text-secondary);

    font-size:1.15rem;

    font-weight:500;

    margin:-10px 0 40px;

}

.hero-platforms{

    display:flex;

    justify-content:center;

    flex-wrap:wrap;

    gap:40px;

    margin-bottom:54px;

}

.hero-platform-item{

    display:flex;

    align-items:center;

    gap:12px;

    color:var(--text-secondary);

    font-size:.95rem;

    font-weight:600;

    letter-spacing:.5px;

    text-transform:uppercase;

}

.hero-platform-item img{

    width:42px;

    height:42px;

}

.hero-content{

    max-width:900px;

}

.hero-text{

    max-width:760px;

    margin:30px auto;

}

.hero-equation{

    display:flex;

    justify-content:center;

    align-items:center;

    gap:30px;

    margin:50px 0;

    font-size:2rem;

    font-weight:700;

}

.plus{

    color:var(--primary);

}

.arrow{

    font-size:2rem;

    color:var(--primary);

    margin:20px 0;

}

.health-title{

    display:flex;

    align-items:center;

    justify-content:center;

    gap:18px;

    font-size:4rem;

    font-weight:800;

    color:var(--primary);

    margin:30px 0;

}

.health-mark{

    display:inline-block;

    vertical-align:middle;

    flex-shrink:0;

}


/* ==========================================================
   Buttons
   ========================================================== */

.hero-buttons{

    display:flex;

    justify-content:center;

    gap:20px;

    margin-top:60px;

}

.button{

    display:inline-flex;

    align-items:center;

    justify-content:center;

    padding:16px 36px;

    border-radius:999px;

    font-weight:600;

    transition:var(--transition);

}

.primary{

    background:var(--primary);

    color:white;

}

.primary:hover{

    transform:translateY(-3px);

    box-shadow:0 15px 35px rgba(58,166,255,.30);

}

.secondary{

    border:1px solid rgba(255,255,255,.20);

}

.secondary:hover{

    border-color:white;

}

/* ==========================================================
   The Missing Metric
   ========================================================== */

.signature-diagram{

    display:flex;

    flex-direction:column;

    align-items:center;

    justify-content:center;

    gap:20px;

    padding:80px 40px;

    background:var(--surface);

    border:1px solid var(--border);

    border-radius:var(--radius);

}

.diagram-item{

    font-size:2rem;

    font-weight:700;

}

.diagram-plus{

    color:var(--primary);

    font-size:2rem;

    font-weight:700;

}

.diagram-arrow{

    color:var(--primary);

    font-size:2rem;

}

.diagram-result{

    font-size:2.2rem;

    font-weight:700;

}

.highlight{

    color:var(--primary);

}

.diagram-item.highlight{

    display:flex;

    align-items:center;

    justify-content:center;

    gap:12px;

}


/* ==========================================================
   Infrastructure Health Principles
   ========================================================== */

.principle-grid{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:30px;

    margin-top:60px;

}

.principle-card{

    background:var(--surface);

    border:1px solid var(--border);

    border-radius:var(--radius);

    padding:36px;

    transition:var(--transition);

}

.principle-card:hover{

    transform:translateY(-5px);

    border-color:rgba(58,166,255,.45);

}

.principle-card h3{

    color:white;

}

.principle-card p{

    margin-bottom:0;

}


/* ==========================================================
   Platform
   ========================================================== */

.platform{

    background:linear-gradient(
        180deg,
        var(--background),
        #080b11
    );

}

.platform-grid{

    display:flex;

    align-items:stretch;

    flex-wrap:wrap;

    gap:0;

    margin-top:60px;

}

.platform-arrow{

    display:flex;

    align-items:center;

    justify-content:center;

    flex:0 0 auto;

    padding:0 16px;

    color:var(--primary);

    font-size:1.5rem;

}

.platform-card{

    flex:1 1 240px;

    background:var(--surface);

    border:1px solid var(--border);

    border-radius:var(--radius);

    padding:32px;

    transition:var(--transition);

}

.platform-card:hover{

    transform:translateY(-6px);

    border-color:rgba(58,166,255,.45);

    box-shadow:0 18px 40px rgba(0,0,0,.35);

}

.platform-icon{

    width:180px;

    height:180px;

    border-radius:50%;

    display:flex;

    align-items:center;

    justify-content:center;

    border:1px solid rgba(58,166,255,.35);

    color:var(--primary);

    font-size:1.6rem;

    margin-bottom:28px;

}

.platform-icon img{

    width:130px;

    height:130px;

}

.platform-banner{

    display:block;

    width:100%;

    max-width:1100px;

    margin:0 auto 56px;

    border-radius:var(--radius);

    border:1px solid var(--border);

}

@media(max-width:768px){

    .platform-icon{

        width:130px;

        height:130px;

    }

    .platform-icon img{

        width:92px;

        height:92px;

    }

}

.platform-card h3{

    margin-bottom:10px;

}

.platform-card h4{

    color:var(--primary);

    margin-bottom:24px;

}

.platform-card ul{

    display:flex;

    flex-direction:column;

    gap:12px;

}

.platform-card li{

    color:var(--text-secondary);

}


/* ==========================================================
   Applications
   ========================================================== */

.future-heading{

    margin-top:90px;

}

.application-grid{

    display:grid;

    grid-template-columns:repeat(4,1fr);

    gap:18px;

    margin-top:40px;

}

.application-grid.flowing{

    display:flex;

    flex-wrap:wrap;

    justify-content:center;

    gap:14px;

}

.application{

    background:var(--surface);

    border:1px solid var(--border);

    border-radius:999px;

    padding:18px 22px;

    text-align:center;

    color:var(--text-secondary);

    transition:var(--transition);

}

.application-grid.flowing .application{

    padding:14px 24px;

}

.application.tomorrow{

    background:transparent;

    border:1px solid rgba(58,166,255,.45);

    color:var(--primary-light);

}

.application:hover{

    color:white;

    background:var(--surface-light);

    border-color:rgba(58,166,255,.45);

}

.application.tomorrow:hover{

    background:rgba(58,166,255,.12);

    color:white;

}

.timeline-legend{

    display:flex;

    gap:28px;

    margin-top:24px;

}

.legend-item{

    display:inline-flex;

    align-items:center;

    gap:8px;

    color:var(--text-secondary);

    font-size:.9rem;

}

.legend-dot{

    width:10px;

    height:10px;

    border-radius:50%;

    display:inline-block;

}

.legend-dot.today{

    background:var(--surface-light);

    border:1px solid var(--border);

}

.legend-dot.tomorrow{

    background:transparent;

    border:1px solid rgba(58,166,255,.45);

}

.solutions-grid{

    display:grid;

    grid-template-columns:repeat(3,1fr);

    gap:30px;

    margin-top:40px;

}

.solution-card{

    background:var(--surface);

    border:1px solid var(--border);

    border-radius:var(--radius);

    padding:36px;

    text-align:center;

    transition:var(--transition);

}

.solution-card:hover{

    transform:translateY(-5px);

    border-color:rgba(58,166,255,.45);

}

.solution-logo{

    width:220px;

    max-width:100%;

    margin:0 auto 20px;

}

.solution-card p{

    margin-bottom:0;

}

/* ==========================================================
   Beyond Earth
   ========================================================== */

.future{

    position:relative;

    overflow:hidden;

    background:
        radial-gradient(
            circle at top,
            rgba(58,166,255,.12),
            transparent 45%
        ),
        linear-gradient(
            rgba(5,6,8,.88),
            rgba(5,6,8,.95)
        ),
        url("W3.png") center/cover no-repeat,
        var(--background);

}

.future::before{

    content:"";

    position:absolute;

    inset:0;

    background-image:
        radial-gradient(
            rgba(255,255,255,.9) 1px,
            transparent 1px
        );

    background-size:180px 180px;

    opacity:.04;

    pointer-events:none;

}

.future .container{

    position:relative;

    z-index:2;

}


/* ==========================================================
   Founding Paper
   ========================================================== */

.paper{

    text-align:center;

}

.paper h2{

    font-size:4rem;

    margin-top:20px;

}

.paper h3{

    color:var(--text-secondary);

    font-weight:400;

    margin-top:20px;

}

.paper-byline{

    color:var(--text);

    font-size:.95rem;

    font-weight:600;

    margin-top:-10px;

    margin-bottom:40px;

}

.coming-soon{

    margin-top:0;

    color:var(--primary);

    text-transform:uppercase;

    letter-spacing:5px;

    font-weight:600;

}


/* ==========================================================
   Philosophy
   ========================================================== */

.philosophy{

    border-top:1px solid var(--border);

    border-bottom:1px solid var(--border);

    background:#07090d;

}

blockquote{

    max-width:900px;

    margin:auto;

    text-align:center;

    font-size:2rem;

    line-height:1.6;

    font-weight:300;

    color:white;

}


/* ==========================================================
   Contact
   ========================================================== */

.contact{

    text-align:center;

}

.contact-form{

    max-width:760px;

    margin:60px auto 0;

}

.form-row{

    margin-bottom:24px;

}

.contact-form input,

.contact-form textarea{

    width:100%;

    padding:18px 22px;

    border-radius:14px;

    background:var(--surface);

    border:1px solid var(--border);

    color:white;

    font-size:1rem;

    font-family:inherit;

    transition:var(--transition);

}

.contact-form input:focus,

.contact-form textarea:focus{

    outline:none;

    border-color:var(--primary);

}

.contact-form textarea{

    resize:vertical;

    min-height:180px;

}

.hidden-field{

    display:none;

}

.contact button{

    margin-top:10px;

}


/* ==========================================================
   Footer
   ========================================================== */

footer{

    border-top:1px solid var(--border);

    padding:60px 0;

}

.footer-content{

    display:flex;

    justify-content:space-between;

    align-items:center;

    gap:40px;

}

.footer-content p{

    margin-bottom:0;

}

.footer-logo{

    height:56px;

    width:auto;

    margin-bottom:16px;

}


/* ==========================================================
   Animation
   ========================================================== */

.fade-up{

    opacity:0;

    transform:translateY(24px);

    transition:
        opacity .8s ease,
        transform .8s ease;

}

.fade-up.show{

    opacity:1;

    transform:translateY(0);

}

header.scrolled{

    background:rgba(5,6,8,.92);

    box-shadow:0 10px 30px rgba(0,0,0,.35);

}

button:disabled{

    opacity:.65;

    cursor:wait;

}

/* ==========================================================
   Responsive
   ========================================================== */

@media (max-width:1200px){

    .container{

        width:min(94%,1100px);

    }

}


@media (max-width:1024px){

    h1{

        font-size:3.6rem;

    }

    h2{

        font-size:2.5rem;

    }

    .hero-equation{

        font-size:1.7rem;

        gap:22px;

    }

    .health-title{

        font-size:3.2rem;

    }

    .platform-grid{

        flex-direction:column;

    }

    .platform-arrow{

        display:none;

    }

    .principle-grid{

        grid-template-columns:1fr;

    }

    .application-grid{

        grid-template-columns:repeat(2,1fr);

    }

    .solutions-grid{

        grid-template-columns:repeat(2,1fr);

    }

}


@media (max-width:768px){

    header{

        position:relative;

    }

    header .container{

        flex-direction:column;

        justify-content:center;

        height:auto;

        padding:24px 0;

    }

    .logo{

        margin-bottom:20px;

    }

    nav{

        flex-wrap:wrap;

        justify-content:center;

        gap:18px;

    }

    .hero{

        min-height:auto;

        padding:100px 0 80px;

    }

    h1{

        font-size:2.7rem;

        letter-spacing:-1px;

    }

    h2{

        font-size:2rem;

    }

    h3{

        font-size:1.35rem;

    }

    p{

        font-size:1rem;

    }

    .hero-equation{

        flex-direction:column;

        gap:16px;

        font-size:1.5rem;

    }

    .health-title{

        font-size:2.6rem;

    }

    .hero-buttons{

        flex-direction:column;

        align-items:center;

    }

    .button{

        width:260px;

    }

    .signature-diagram{

        padding:50px 25px;

    }

    .diagram-item{

        font-size:1.5rem;

    }

    .diagram-result{

        font-size:1.8rem;

    }

    .platform-card{

        padding:32px;

    }

    .application-grid{

        grid-template-columns:1fr;

    }

    .solutions-grid{

        grid-template-columns:1fr;

    }

    blockquote{

        font-size:1.45rem;

    }

    .footer-content{

        flex-direction:column;

        text-align:center;

    }

}


@media (max-width:480px){

    .section{

        padding:80px 0;

    }

    h1{

        font-size:2.2rem;

    }

    h2{

        font-size:1.7rem;

    }

    .health-title{

        font-size:2.1rem;

    }

    .hero-equation{

        font-size:1.3rem;

    }

    .diagram-item{

        font-size:1.3rem;

    }

    .diagram-result{

        font-size:1.5rem;

    }

    .platform-card{

        padding:26px;

    }

    .contact-form input,

    .contact-form textarea{

        padding:16px 18px;

    }

}


/* ==========================================================
   Utility
   ========================================================== */

.text-center{

    text-align:center;

}

.mt-40{

    margin-top:40px;

}

.mt-60{

    margin-top:60px;

}

.mb-0{

    margin-bottom:0;

}

.hidden{

    display:none;

}


/* ==========================================================
   Selection
   ========================================================== */

::selection{

    background:rgba(58,166,255,.35);

    color:white;

}


/* ==========================================================
   Scrollbar
   ========================================================== */

::-webkit-scrollbar{

    width:10px;

}

::-webkit-scrollbar-track{

    background:#050608;

}

::-webkit-scrollbar-thumb{

    background:#1c2530;

    border-radius:20px;

}

::-webkit-scrollbar-thumb:hover{

    background:#2d4d69;

}


/* ==========================================================
   End
   ========================================================== */