/* =========================================
   GLOBAL
========================================= */

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

body {

    width: 100%;
    height: 100vh;

    overflow: hidden;

    background: #020a0f;

    color: white;

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

}


/* =========================================
   BACKGROUND
========================================= */

.background {

    position: fixed;

    inset: 0;

    overflow: hidden;

    background:
        linear-gradient(
            180deg,
            rgba(1, 8, 14, 0.56) 0%,
            rgba(2, 10, 16, 0.28) 44%,
            rgba(1, 7, 12, 0.82) 100%
        ),
        radial-gradient(
            circle at 50% 45%,
            rgba(0, 70, 80, 0.2),
            transparent 45%
        ),
        url('./images/LoadBackground.jpg') center center / 100% 100% no-repeat;

}


/* =========================================
   GRID
========================================= */

.grid {

    position: absolute;

    bottom: 0;

    left: 0;

    width: 100%;

    height: 35%;

    opacity: 0.18;

    background-image:
        linear-gradient(
            rgba(0,255,150,0.2) 1px,
            transparent 1px
        ),
        linear-gradient(
            90deg,
            rgba(0,255,150,0.2) 1px,
            transparent 1px
        );

    background-size: 50px 50px;

    transform:
        perspective(400px)
        rotateX(60deg);

    transform-origin: bottom;

}


/* =========================================
   PARTICLES
========================================= */

#particles {

    position: fixed;

    inset: 0;

    pointer-events: none;

}


.particle {

    position: absolute;

    width: 2px;

    height: 2px;

    background: #4cff00;

    border-radius: 50%;

    box-shadow:
        0 0 8px #4cff00;

    animation:
        particleFloat
        6s infinite ease-in-out;

}


@keyframes particleFloat {

    0% {

        opacity: 0;

        transform:
            translateY(20px);

    }

    50% {

        opacity: 1;

    }

    100% {

        opacity: 0;

        transform:
            translateY(-80px);

    }

}


/* =========================================
   SENSOR NETWORK
========================================= */

.network-status {

    position: absolute;

    top: 25px;

    right: 40px;

    left: auto;

    width: 215px;

    height: 70px;

    border: 1px solid
        rgba(0, 180, 255, 0.35);

    border-radius: 12px;

    background:
        rgba(2, 15, 22, 0.75);

    backdrop-filter: blur(10px);

    display: flex;

    align-items: center;

    gap: 15px;

    padding: 15px;

}


.network-icon {

    position: relative;

    width: 35px;

    height: 35px;

}


.signal {

    position: absolute;

    border: 2px solid #45ff00;

    border-left-color: transparent;

    border-bottom-color: transparent;

    border-radius: 50%;

    transform: rotate(-45deg);

}


.signal-1 {

    width: 12px;

    height: 12px;

    left: 12px;

    top: 11px;

}


.signal-2 {

    width: 23px;

    height: 23px;

    left: 6px;

    top: 5px;

}


.signal-3 {

    width: 34px;

    height: 34px;

    left: 0;

    top: -1px;

}


.signal-dot {

    position: absolute;

    width: 5px;

    height: 5px;

    background: #4cff00;

    border-radius: 50%;

    left: 15px;

    top: 15px;

    box-shadow:
        0 0 10px #4cff00;

}


.network-title {

    font-size: 12px;

    color: #d4e2e7;

    letter-spacing: 0.5px;

}


.network-online {

    margin-top: 5px;

    font-size: 14px;

    color: #4cff00;

    font-weight: 600;

}


.network-online span {

    display: inline-block;

    width: 7px;

    height: 7px;

    margin-right: 7px;

    background: #4cff00;

    border-radius: 50%;

    box-shadow:
        0 0 10px #4cff00;

}


/* =========================================
   MAIN
========================================= */

.main {

    position: absolute;

    top: 17%;

    left: 50%;

    transform: translateX(-50%);

    width: 520px;

    text-align: center;

}


/* =========================================
   LOGO
========================================= */

.logo {

    display: flex;

    flex-direction: column;

    align-items: center;

}

.logo-image {

    display: block;

    width: min(340px, 78vw);

    height: auto;

    object-fit: contain;

    filter: drop-shadow(0 0 22px rgba(76, 255, 0, 0.28));

}


/* =========================================
   TAGLINE
========================================= */

.tagline {

    margin-top: 10px;

    color: #a9bac0;

    font-size: 13px;

    letter-spacing: 1px;

}


/* =========================================
   RADAR
========================================= */

.radar {

    position: relative;

    width: 110px;

    height: 110px;

    margin: 10px auto 20px;

}


.radar-ring {

    position: absolute;

    border: 1px solid
        rgba(76,255,0,0.5);

    border-radius: 50%;

    left: 50%;

    top: 50%;

    transform: translate(-50%, -50%);

}


.ring-1 {

    width: 35px;
    height: 35px;

}


.ring-2 {

    width: 65px;
    height: 65px;

}


.ring-3 {

    width: 100px;
    height: 100px;

}


.radar-sweep {

    position: absolute;

    width: 50%;

    height: 50%;

    left: 50%;

    top: 0;

    transform-origin: bottom left;

    background:
        linear-gradient(
            45deg,
            transparent,
            rgba(76,255,0,0.4)
        );

    clip-path:
        polygon(
            0 100%,
            100% 0,
            0 0
        );

    animation:
        radarRotate
        2s linear infinite;

}


@keyframes radarRotate {

    to {

        transform:
            rotate(360deg);

    }

}


.radar-dot {

    position: absolute;

    width: 7px;

    height: 7px;

    border-radius: 50%;

    background: #4cff00;

    box-shadow:
        0 0 15px #4cff00;

    left: 50%;

    top: 50%;

    transform: translate(-50%, -50%);

}


/* =========================================
   LOADING
========================================= */

.loading-text {

    font-size: 17px;

    letter-spacing: 0.5px;

    margin-bottom: 15px;

}


.progress-container {

    display: flex;

    align-items: center;

    gap: 12px;

}


.progress-background {

    position: relative;

    height: 16px;

    flex: 1;

    border: 1px solid
        rgba(0,200,255,0.5);

    border-radius: 20px;

    overflow: hidden;

    background:
        rgba(0,20,25,0.8);

}


.progress-bar {

    height: 100%;

    width: 0%;

    border-radius: 20px;

    background:
        linear-gradient(
            90deg,
            #4cff00,
            #65ff22
        );

    box-shadow:
        0 0 15px
        rgba(76,255,0,0.8);

    transition:
        width 0.1s linear;

}


.progress-number {

    width: 40px;

    color: #4cff00;

    font-size: 13px;

}


.loading-description {

    margin-top: 15px;

    color: #9baeb4;

    font-size: 13px;

}


/* =========================================
   FEATURES
========================================= */

.features {

    position: absolute;

    bottom: 28px;


    left: 50%;

    transform: translateX(-50%);

    width: 75%;

    max-width: 1050px;

    min-height: 124px;

    display: grid;

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

    border: 1px solid
        rgba(0,180,255,0.25);

    border-radius: 14px;

    background:
        rgba(2,15,22,0.75);

    backdrop-filter: blur(10px);

}


.feature {

    display: flex;

    align-items: center;

    justify-content: center;

    gap: 18px;
    padding: 14px 20px;
    text-align: center;

    border-right: 1px solid
        rgba(100,200,220,0.12);

}


.feature:last-child {

    border-right: none;

}


.feature-icon {

    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 46px;
    font-size: 42px;

}

.feature-icon img {

    display: block;

    width: 42px;

    height: 42px;

    object-fit: contain;

}


.feature-title {

    color: #b9cbd1;

    font-size: 13px;
    font-weight: 600;

}


.feature-subtitle {

    color: #b9cbd1;

    font-size: 13px;
    font-weight: 600;

}


.feature-description {

    margin-top: 8px;

    color: #7f949b;

    font-size: 11px;

}


/* =========================================
   RESPONSIVE
========================================= */

@media (max-width: 1100px) {

    .features {

        width: 90%;

    }

}


@media (max-width: 800px) {

    .network-status {
        top: 15px;
        right: 15px;
        left: auto;
    }

    .main {
        width: min(90%, 520px);
        top: 20%;

    }

    .features {

        bottom: 35px;

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

    }

    .feature {
        min-width: 0;
        padding: 12px 10px;
        gap: 12px;

        border-bottom:
            1px solid
            rgba(100,200,220,0.12);

    }

}


@media (max-width: 500px) {

    .network-status {

        top: 15px;

        right: 15px;

        left: auto;

        transform: scale(0.8);

        transform-origin: right top;

    }

    .main {
        top: 22%;
        width: calc(100% - 30px);

    }

    .tagline {

        font-size: 9px;

    }

    .features {
        right: 15px;
        bottom: 15px;
        left: 15px;
        width: auto;
        min-height: 0;
        transform: none;

    }

    .feature {
        min-height: 66px;
        gap: 8px;
        padding: 8px 6px;

    }

    .feature-icon {

        flex-basis: 32px;
        font-size: 30px;

    }

    .feature-icon img {

        width: 30px;

        height: 30px;

    }

    .feature-description {

        display: none;

    }

}

@media (max-width: 360px) {
    .logo-image {
        width: min(260px, 72vw);
    }

    .tagline {
        font-size: 8px;
        letter-spacing: 0.6px;
    }

    .loading-text {
        font-size: 14px;
    }

    .feature-title,
    .feature-subtitle {
        font-size: 10px;
    }
}