:root {
    --bg-primary: #000;
    --bg-secondary: #fff;
    --surface: #111;
    --accent: #9fb0c3;
    --accent-hover: #b8c6d6;
    --text: #e6edf3;
    --muted: #8b949e;
    --border: rgba(159, 176, 195, 0.15);
}

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

html { scroll-behavior: smooth;}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background-color: var(--bg-primary);
    min-height: 100vh;
}

main {
    min-height: 100vh;
    padding-top: 8vh;
}

a { text-decoration: none; color: inherit; }

.no-select {
    -webkit-user-select: none;
    user-select: none;
    pointer-events: auto;
}

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


/* ================= OVERLAY ================= */

.overlay {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 10;
    top: 0;
    left: 0;
    background-color: rgba(0,0,0, 0.9);
    overflow: hidden;
    transition: 1s;
  }
  
.overlay-content {
    position: relative;
    height: 100%;
    width: 100%;
}

.overlay a {
    padding: 8px;
    text-decoration: none;
    font-size: 36px;
    color: #818181;
    display: block;
    transition: 0.3s;
}
  

.overlay a:hover, .overlay a:focus {
    color: #f1f1f1;
} 
  
.close-btn {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 60px;
}


/* ================= HEADER ================= */
header {
    margin: 0;
    padding: 20px 30px;
    background-color: var(--bg-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 8vh;
    width: 100%;
    position: fixed;
    transition: top 0.3s ease-in-out;
    z-index: 5;
    top: 0;
}

.header-left {
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}

.logo-container {
    justify-content: center;
    align-items: center;
}

.logo-container a {
    margin: 12px;
    margin-right: 40px;
    padding: 8px;
}

.logo-container a img {
    height: 3.6vh;
    width: auto;
}

.header-links {
    align-items: center;
    margin-left: 3vw;
    margin-right: 15vw;
}

.header-links a {
    margin: 15px;
    font-size: 15px;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--accent);
    text-decoration: none;
    position: relative;
    padding-bottom: 5px;
    overflow: hidden;
}

.header-links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width 0.5s ease-in-out;
}

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

.header-links a:not(:hover)::after {
    width: 0;
    transition: width 0.5s ease-in-out;
}

.header-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

.header-right i {
    font-size: 24px;
    color: var(--accent);
    cursor: pointer;
}

.header-right i.mobile {
    display: none;
}

.header-right a {
    padding: 10px 18px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid var(--accent);
    color: var(--accent);
}

.header-right a:hover {
    background: var(--accent-hover);
    color: #000;
}


/* ================= HERO ================= */

.hero {
    height: 100vh;
    width: inherit;
    margin: 0;
    background: url("assets/hero.jpg");
    background-size: cover;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-content {
    height: auto;
    width: 35vw;
    background-color: rgba(255, 255, 255, 0.1);
    position: absolute;
    left: 8vw;
    padding: 35px;
    display: flex;
    flex-direction: column;
    z-index: 1;
}

.hero-content h1 {
    margin: 0 0 10px;
    font-size: 2.8rem;
    font-family: 'Inter', sans-serif;
    color: var(--text);
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 20px;
    font-family: 'Inter', sans-serif;
    color: var(--text);
}

.hero-btn {
    margin-top: 20px;
    display: flex;
    gap: 16px;
}

.btn-primary {
    background: var(--accent);
    color: #000;
    padding: 14px 26px;
    border-radius: 8px;
    font-weight: 700;
}

.btn-secondary {
    padding: 14px 26px;
    border-radius: 8px;
    border: 1px solid var(--accent);
    color: var(--text);
}

.scroll-down {
    margin-top: auto;
    padding-top: 2vh;
    height: 9vh;
    width: 100%;
    z-index: 3;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0.9));
}

.image-credits {
    z-index: 4;
    position: absolute;
    bottom: 0;
    left: 1.5%;
    transform: translateX(-1.5%);
    margin-bottom: 25px;
    padding: 9px;
    border-radius: 8px;
    background-color: rgba(0, 0, 0, 0.6);
    color: var(--text);
}

.image-credits:hover {
    background-color: rgba(0, 0, 0, 0.5);
}

.image-credits a {
    text-decoration: underline;
    color: var(--muted);
}

/* ================= SCROLLBAR ================= */

html {
  scrollbar-width: initial;
  scrollbar-color: var(--accent) var(--bg-primary);
}

/* Chrome / Edge / Safari */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent), var(--accent-hover));
  border-radius: 10px;
}


/* ================= CONSTRUCTION ================= */

.construction {
    min-height: 92vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.construction-card {
    width: min(850px, 95%);
    background: linear-gradient(
        180deg,
        rgba(255,255,255,0.04),
        rgba(255,255,255,0.02)
    );

    border: 1px solid var(--border);
    border-radius: 20px;

    padding: 50px;

    backdrop-filter: blur(10px);
}

.construction-pill {
    display: inline-block;

    padding: 8px 14px;

    border: 1px solid var(--accent);
    border-radius: 999px;

    color: var(--accent);

    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;

    margin-bottom: 25px;
}

.construction-card h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 20px;
}

.construction-card p {
    max-width: 700px;

    color: var(--muted);

    font-size: 1.1rem;
    line-height: 1.8;

    margin-bottom: 35px;
}

.construction-status {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.status-item {
    flex: 1;
    min-width: 180px;

    background: rgba(255,255,255,0.03);

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

    border-radius: 12px;

    padding: 18px;
}

.status-item strong {
    display: block;
    color: var(--text);
    margin-bottom: 8px;
}

.status-item span {
    color: var(--muted);
}

@media (max-width: 900px) {

    .construction-card {
        padding: 30px;
    }

    .construction-status {
        flex-direction: column;
    }
}


/* ================= MOBILE ================= */

@media (max-width: 900px) {

    /* Hide desktop navigation */
    .header-links {
        display: none;
    }

    .header-right a {
        display: none;   /* Explore Spectra button */
    }

    #topBtn {
        display: none !important;
    }

    /* Show hamburger icon only on mobile */
    .header-right i.mobile {
        display: block;
    }

    /* Hero adjustments (optional but recommended) */
    .hero-content {
        width: 85vw;
        left: 50%;
        transform: translateX(-50%);
        padding: 25px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 15px;
    }

    .hero-btn {
        flex-direction: column;
    }
}