/* ===========================
   Portfolio Grid System
=========================== */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    padding: 10px 0;
}

/* ===========================
   Project Cards
=========================== */
.card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: #1e1e1e;
    border-radius: 12px;
    border: 1px solid #333;
    text-decoration: none;
    color: white;
    overflow: hidden;
    height: 320px;
    cursor: default;
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        border-color 0.2s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 28px rgba(0,0,0,0.55);
    border-color: #8ab4f8;
}

/* ===========================
   RGB Animated Glow Border
=========================== */
.card::before {
    content: "";
    position: absolute;
    inset: -3px;
    border-radius: 14px;
    background: linear-gradient(
        120deg,
        red, orange, yellow,
        lime, cyan, blue, magenta, red
    );
    background-size: 400% 400%;
    z-index: -1;
    filter: blur(6px) grayscale(85%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover::before {
    opacity: 1;
    animation: rgb-border 6s linear infinite;
}

@keyframes rgb-border {
    0%   { background-position:   0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position:   0% 50%; }
}

/* ===========================
   Light Sweep Effect
=========================== */
.card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        120deg,
        transparent 30%,
        rgba(255,255,255,0.06),
        transparent 70%
    );
    transform: translateX(-100%);
    transition: transform 0.6s ease;
    pointer-events: none;
}

.card:hover::after {
    transform: translateX(100%);
}

/* ===========================
   Model Wrapper
=========================== */
.model-wrapper {
    position: relative;
    flex: 1;
    width: 100%;
    border-radius: 8px 8px 0 0;
    overflow: hidden;
    background: transparent;
}

/* ===========================
   Model Viewer
=========================== */
model-viewer {
    width: 100%;
    height: 100%;
    display: block;
    background: transparent;
    --poster-color: transparent;

    transition: transform 0.3s ease;
}

.card:hover model-viewer {
    transform: scale(1.03);
}

/* ===========================
   Card Title
=========================== */
.card h3 {
    margin: 15px auto;
    padding: 6px 16px;
    font-size: 18px;
    text-align: center;
    line-height: 1.4;
    color: #fff;

    background: rgba(30,30,30,0.85);
    border-radius: 20px;
    width: fit-content;

    transition:
        transform 0.2s ease,
        background 0.2s ease,
        box-shadow 0.2s ease;
}

.card:hover h3 {
    transform: translateY(-2px);
    background: rgba(40,40,40,0.95);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

/* ===========================
   Tooltip
=========================== */
.model-tooltip {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 10;

    background: rgba(0,0,0,0.7);
    color: #fff;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 6px;

    opacity: 0;
    pointer-events: none;
    transform: translateY(-4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.model-wrapper:hover .model-tooltip {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================
   Bottom Accent Line
=========================== */
.card .accent {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0%;
    height: 2px;
    background: linear-gradient(90deg, #8ab4f8, #c58bff);
    transition: width 0.3s ease, left 0.3s ease;
}

.card:hover .accent {
    width: 100%;
    left: 0;
}

/* ===========================
   Mobile Responsive
=========================== */
@media (max-width: 600px) {
    .grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .card {
        height: 300px;
    }

    .model-wrapper {
        height: 200px;
    }
}