:root {
    --accent: #00ff41;
    --text-dim: #a0a0a0;
    --border: #333;
}

/* Base */
body {
    background: #0f1117;
    color: #fff;
    font-family: monospace;
}

/* ================= CERT CARD ================= */

.cert-card {
    position: relative;
    overflow: hidden;
    transition: 0.45s ease;
}


/* Liquid fill layer */
.cert-card::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 0%;
    background: var(--accent);
    transition: 0.45s ease;
    z-index: 0;
}

/* Hover animation */
.cert-card:hover::before {
    height: 100%;
}

/* Lift + glow */
.cert-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 0 25px rgba(0, 255, 153, 0.35);
    border-color: var(--accent);
}

/* Text above overlay */
.cert-card * {
    position: relative;
    z-index: 1;
}

/* Text turns black on hover */
.cert-card:hover,
.cert-card:hover * {
    color: #000 !important;
}


/* Small shine sweep (premium feel) */
.cert-card::after {
    content: "";
    position: absolute;
    top: -120%;
    left: -40%;
    width: 50%;
    height: 300%;
    background: rgba(255, 255, 255, 0.08);
    transform: rotate(25deg);
    transition: 0.8s;
}

.cert-card:hover::after {
    left: 120%;
}

/* Mobile responsive polish */
@media(max-width:640px) {
    .cert-card:hover {
        transform: translateY(-6px) scale(1.02);
    }
}


/* ================= PRELOADER ================= */

#preloader {
    position: fixed;
    inset: 0;
    background: #0f1117;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

#preloader.hide {
    opacity: 0;
    visibility: hidden;
}

/* Center content */
.loader-content {
    text-align: center;
    font-family: monospace;
}

/* Loading text */
.loader-text {
    color: var(--accent);
    letter-spacing: 4px;
    font-size: 12px;
    margin-bottom: 18px;
    animation: blink 1.2s infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

/* Loading bar */
.loader-bar {
    width: 220px;
    height: 3px;
    background: #222;
    overflow: hidden;
    border-radius: 5px;
}

/* Moving progress */
.loader-progress {
    height: 100%;
    width: 0%;
    background: var(--accent);
    animation: loading 2s ease forwards;
}

@keyframes loading {
    0% {
        width: 0%;
    }

    100% {
        width: 100%;
    }
}