/* ========================= */
/* Portfolio Section */
/* ========================= */
.portfolio {
    background: #111111;
    /* Dark background for portfolio section */
    padding: 4rem 2rem;
    /* Top/bottom 4rem, left/right 2rem spacing */
}

/* ========================= */
/* Filter Buttons */
/* ========================= */
.portfolio-filters {
    display: flex;
    /* Align buttons horizontally */
    justify-content: center;
    /* Center buttons in the section */
    gap: 0.75rem;
    /* Space between buttons */
    margin-bottom: 3rem;
    /* Space below the filters */
    flex-wrap: wrap;
    /* Wrap to next line on small screens */
}

.filter-btn {
    background: transparent;
    /* Transparent button background */
    color: var(--text-light);
    /* Light text color */
    border: 2px solid var(--border-color);
    /* Button border */
    padding: 0.5rem 1.2rem;
    /* Space inside button */
    border-radius: 50px;
    /* Rounded pill shape */
    cursor: pointer;
    /* Pointer on hover */
    transition: all 0.3s ease;
    /* Smooth hover/focus effect */
    font-size: 0.95rem;
    /* Font size */
    letter-spacing: 0.5px;
    /* Slight spacing between letters */
}

/* Active/Hover/Focus states for buttons */
.filter-btn.active,
.filter-btn:hover,
.filter-btn:focus {
    background: var(--primary-color);
    /* Highlight background */
    border-color: var(--primary-color);
    /* Match border to background */
    color: var(--text-white);
    /* White text */
    transform: scale(1.05);
    /* Slight zoom effect */
    outline: none;
    /* removes default focus outline */
    box-shadow: none;
    /* removes any shadow if browser adds it */
    border: none;
}

/* ========================= */
/* Portfolio Grid */
/* ========================= */
.portfolio-grid {
    display: grid;
    /* Use CSS grid layout */
    grid-template-columns: repeat(auto-fill, minmax(280px, 320px));
    /* Responsive columns */
    justify-content: center;
    /* Center grid if not full */
    gap: 1.8rem;
    /* Gap between cards */
}

/* ========================= */
/* Portfolio Item / Card */
/* ========================= */
.portfolio-item {
    background: var(--card-bg);
    /* Card background color */
    border-radius: 12px;
    /* Rounded corners */
    overflow: hidden;
    /* Clip overflowing content */
    cursor: pointer;
    /* Pointer on hover */
    position: relative;
    /* For overlay or child positioning */
    display: flex;
    /* Flex layout for content */
    flex-direction: column;
    /* Stack image + content vertically */
    height: 380px;
    /* Fixed height for all cards */
    opacity: 1;
    /* Fully visible */
    transform: scale(1);
    /* Default scale */
    transition: opacity 0.4s ease, transform 0.4s ease;
    /* Smooth animation */
}

/* Hidden cards (used for filtering) */
.portfolio-item.hide {
    opacity: 0;
    /* Fade out */
    transform: scale(0.8);
    /* Slight shrink */
    pointer-events: none;
    /* Disable clicks on hidden items */
}

/* Hover effect for cards */
.portfolio-item:hover {
    transform: translateY(-8px) scale(1.03);
    /* Lift + scale */
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.35);
    /* Shadow for depth */
}

/* ========================= */
/* Portfolio Image */
/* ========================= */
.portfolio-image {
    width: 100%;
    /* Full width of card */
    height: 50%;
    /* Adjust height automatically */
    display: flex;
    /* Center the image */
    align-items: center;
    justify-content: center;
    position: relative;
    /* For overlay positioning */
}

.portfolio-image img {
    width: 100%;
    /* Fill container width */
    height: 100%;
    /* Fill container height */
    object-fit: cover;
    /* Crop image to fill container */
    object-position: top;
    /* Align top of image when cropped */
    display: block;
    transition: transform 0.4s ease;
    /* Smooth zoom on hover */
}

/* Zoom image slightly on card hover */
.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

/* ========================= */
/* Portfolio Content */
/* ========================= */
.portfolio-content {
    padding: 1.5rem 1.2rem;
    /* Space inside card */
    flex: 1;
    /* Take remaining space */
    text-align: center;
    /* Center content */
    display: flex;
    /* Flex column for content */
    flex-direction: column;
}

.portfolio-content h3 {
    color: var(--primary-color);
    /* Title color */
    margin-bottom: 0.6rem;
    /* Space below title */
    font-size: 1.2rem;
    letter-spacing: 0.5px;
}

.portfolio-content p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.4rem;

    display: -webkit-box;
    /* Needed for multi-line clamp */
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    /* Limit to 4 lines */

    display: box;
    /* Older fallback */
    box-orient: vertical;

    line-clamp: 4;
    /* Standard property for future */

    overflow: hidden;
    /* Hide overflow text */
    text-overflow: ellipsis;
    /* Show ... at end */
}

/* ========================= */
/* Links Reset */
/* ========================= */
a {
    text-decoration: none;
    color: inherit;
    outline: none;
    border: none;
}

.portfolio-item a:focus,
.portfolio-item a:active,
.portfolio-item a:focus-visible {
    outline: none;      /* removes the browser focus ring */
    box-shadow: none;   /* removes shadow added by some browsers */
}


/* ========================= */
/* Responsive Styles */
/* ========================= */
@media (max-width: 768px) {
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 1.2rem;
    }

    .portfolio-image {
        height: 180px;
    }

    .portfolio-content h3 {
        font-size: 1.1rem;
    }

    .portfolio-content p {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .portfolio-grid {
        grid-template-columns: 1fr;
        /* Single column on very small screens */
        gap: 1rem;
    }

    .portfolio-image {
        height: 160px;
    }

    .portfolio-content {
        padding: 1rem;
    }

    .portfolio-content h3 {
        font-size: 1rem;
    }

    .portfolio-content p {
        font-size: 0.8rem;
    }

    .filter-btn {
        padding: 0.4rem 1rem;
        font-size: 0.85rem;
    }
}