/* =============================================================================
   Portfolio Block — Frontend Stylesheet
   1-1 conversion of Portfolio.tsx + ProjectCard (Tailwind → plain CSS)
   ============================================================================= */

/* --------------------------------------------------------------------------
   Section wrapper — bg-[#050505] text-white py-20 md:py-32
   -------------------------------------------------------------------------- */
.portfolio-block {
    background-color: #050505;
    color: #ffffff;
    padding-top: 5rem;
    padding-bottom: 5rem;
    box-sizing: border-box;
}

/* --------------------------------------------------------------------------
   Container — max-w-7xl mx-auto px-6
   -------------------------------------------------------------------------- */
.portfolio-container {
    max-width: 80rem;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.portfolio-container--header {
    margin-bottom: 3rem;
}

/* --------------------------------------------------------------------------
   Heading — font-display text-4xl md:text-5xl font-bold tracking-tight
   -------------------------------------------------------------------------- */
.portfolio-heading {
    font-family: "Syne", ui-sans-serif, system-ui, sans-serif;
    font-size: clamp(2.25rem, 5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0 0 1rem 0;
}

/* Subheading — text-white/50 mt-4 max-w-xl text-sm md:text-base */
.portfolio-subheading {
    font-family: "Inter", ui-sans-serif, system-ui, sans-serif;
    color: rgba(255, 255, 255, 0.50);

    margin: 0;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Grid — grid grid-cols-1 md:grid-cols-3 gap-6
   -------------------------------------------------------------------------- */
.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

/* --------------------------------------------------------------------------
   Card — relative w-full h-[400px] md:h-[500px] overflow-hidden
          cursor-none rounded-2xl border border-white/10 bg-[#0a0a0a]
   -------------------------------------------------------------------------- */
.portfolio-card {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    cursor: none;
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.10);
    background-color: #0a0a0a;
}

/* --------------------------------------------------------------------------
   Base Layer: blurred bg + scrim + grain
   -------------------------------------------------------------------------- */
.portfolio-card__base {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

/* absolute inset-[-50px] bg-cover bg-center opacity-40 grayscale blur-[30px] */
.portfolio-card__blur {
    position: absolute;
    inset: -50px;
    background-size: cover;
    background-position: center;
    opacity: 0.40;
    filter: blur(30px) grayscale(1);
}

/* absolute inset-0 bg-black/40 */
.portfolio-card__scrim {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.40);
}

/* absolute inset-0 bg-grain opacity-20 mix-blend-overlay */
.portfolio-card__grain {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.20;
    mix-blend-mode: overlay;
    pointer-events: none;
}

/* --------------------------------------------------------------------------
   Default state: pulsing dot + title + "Classified Asset"
   absolute inset-0 flex flex-col items-center justify-center p-6 text-center
   transition-opacity duration-500 group-hover:opacity-0
   -------------------------------------------------------------------------- */
.portfolio-card__default {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    text-align: center;
    transition: opacity 0.5s ease;
    z-index: 5;
}

/* Hidden on hover — JS adds .is-hovered to .portfolio-card */
.portfolio-card.is-hovered .portfolio-card__default {
    opacity: 0;
}

/* Pulse ring — w-12 h-12 rounded-full border border-white/20 */
.portfolio-card__pulse-wrap {
    width: 3rem;
    height: 3rem;
    border-radius: 9999px;
    border: 1px solid rgba(255, 255, 255, 0.20);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

/* Pulsing dot — w-2 h-2 bg-[#FF4E00] rounded-full animate-pulse */
.portfolio-card__pulse {
    width: 0.5rem;
    height: 0.5rem;
    background: #FF4E00;
    border-radius: 9999px;
    animation: portfolio-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes portfolio-pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

/* font-display text-3xl font-bold text-white mb-2 */
.portfolio-card__title {
    font-family: "Syne", ui-sans-serif, system-ui, sans-serif;
    font-size: 1.875rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 0.5rem 0;
}

/* font-mono text-xs uppercase tracking-[0.2em] text-white/40 */
.portfolio-card__classified {
    font-family: "JetBrains Mono", ui-monospace, monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: rgba(255, 255, 255, 0.40);
    margin: 0;
}

/* --------------------------------------------------------------------------
   Reveal layer: sharp image behind radial-gradient mask
   absolute inset-0 bg-cover bg-center pointer-events-none
   JS sets mask-image: radial-gradient(circle 200px at Xpx Ypx, ...)
   opacity 0 → 1 on hover
   -------------------------------------------------------------------------- */
.portfolio-card__reveal {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 4;
    /* mask-image set by JS on mousemove */
    -webkit-mask-image: none;
    mask-image: none;
}

.portfolio-card.is-hovered .portfolio-card__reveal {
    opacity: 1;
}

/* Gradient overlay at bottom for text readability */
.portfolio-card__reveal-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.80) 0%, rgba(0, 0, 0, 0.20) 50%, transparent 100%);
}

/* --------------------------------------------------------------------------
   Revealed bottom text details
   absolute bottom-0 left-0 w-full p-8
   translate-y-4 → 0 on hover, transition-transform duration-500
   -------------------------------------------------------------------------- */
.portfolio-card__details {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    box-sizing: border-box;
    transform: translateY(1rem);
    transition: transform 0.5s ease;
}

.portfolio-card.is-hovered .portfolio-card__details {
    transform: translateY(0);
}

/* Client — font-mono text-xs uppercase tracking-widest text-[#FF4E00] mb-2 */
.portfolio-card__client {
    font-family: "JetBrains Mono", ui-monospace, monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #FF4E00;
    margin: 0 0 0.5rem 0;
}

/* font-display text-2xl font-bold text-white */
.portfolio-card__reveal-title {
    font-family: "Syne", ui-sans-serif, system-ui, sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0;
}

/* --------------------------------------------------------------------------
   Custom cursor — "[ NDA PROTECTED ]"
   absolute top-0 left-0 pointer-events-none z-20
   font-mono text-sm font-bold text-white mix-blend-difference tracking-widest
   JS positions via transform: translate(curX, curY) + centering offset
   -------------------------------------------------------------------------- */
.portfolio-card__cursor {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 20;
    font-family: "JetBrains Mono", ui-monospace, monospace;
    font-size: 0.875rem;
    font-weight: 700;
    color: #ffffff;
    mix-blend-mode: difference;
    letter-spacing: 0.1em;
    white-space: nowrap;
    opacity: 0;
    will-change: transform;
    /* JS positions + shows this */
}

/* =============================================================================
   Responsive
   ============================================================================= */
@media (min-width: 48rem) {
    .portfolio-block {
        padding-top: 8rem;
        padding-bottom: 8rem;
    }

    .portfolio-card {
        height: 500px;
    }

    .portfolio-subheading {
        font-size: 1rem;
    }
}

@media (min-width: 48rem) {
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .portfolio-container--header {
        margin-bottom: 4rem;
    }
}

/* max width 767px */
@media (max-width: 767px) {
    .portfolio-card {
        height: 280px;
    }
}