/* ================================================================
   TECH STACK SCENE — Built With The Best
   ================================================================ */

/* Section base */
.tech-stack-scene {
    position: relative;
    overflow: hidden;
    background: var(--bg-color);
    min-height: 100vh;
    height: auto;
    padding: 120px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* Background grid */
.tech-stack-bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(63, 169, 245, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(63, 169, 245, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

/* Centered radial glow */
.tech-stack-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(63, 169, 245, 0.07) 0%, transparent 70%);
    pointer-events: none;
}

/* Content wrapper */
.tech-stack-content {
    position: relative;
    z-index: 2;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 56px;
    padding: 0 30px;
}

/* ---- Header ---- */
.tech-stack-header {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}

.tech-eyebrow {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 5px;
    color: var(--accent);
    text-transform: uppercase;
    opacity: 0;
}

/* Glitch title */
.tech-main-title {
    font-family: var(--font-heading);
    font-size: clamp(2.4rem, 6vw, 5rem);
    font-weight: 800;
    letter-spacing: -2px;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    line-height: 1.05;
    cursor: default;
    opacity: 0;
}

.tech-main-title::before,
.tech-main-title::after {
    content: attr(data-glitch);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    font-family: var(--font-heading);
    font-size: inherit;
    font-weight: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.tech-main-title::before {
    color: var(--accent);
    clip-path: polygon(0 18%, 100% 18%, 100% 52%, 0 52%);
    animation: tech-glitch-1 7s ease-in-out infinite;
}

.tech-main-title::after {
    color: var(--accent-light);
    clip-path: polygon(0 62%, 100% 62%, 100% 88%, 0 88%);
    animation: tech-glitch-2 5s ease-in-out infinite;
}

@keyframes tech-glitch-1 {
    0%, 84%, 100% { transform: translate(0);           opacity: 0; }
    85%            { transform: translate(-5px, 2px);  opacity: 0.9; }
    86%            { transform: translate(5px, -2px);  opacity: 0.7; }
    87%            { transform: translate(-2px, 0);    opacity: 0.5; }
    88%            { transform: translate(0);           opacity: 0; }
}

@keyframes tech-glitch-2 {
    0%, 89%, 100% { transform: translate(0);           opacity: 0; }
    90%            { transform: translate(5px, 2px);   opacity: 0.8; }
    91%            { transform: translate(-4px, -2px); opacity: 0.6; }
    92%            { transform: translate(0);           opacity: 0; }
}

.tech-main-desc {
    font-family: var(--font-body);
    font-size: clamp(0.95rem, 1.4vw, 1.15rem);
    color: var(--text-secondary);
    max-width: 460px;
    line-height: 1.75;
    opacity: 0;
}

/* ---- Marquee ---- */
.marquee-container {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 18px;
    overflow: hidden;
}

/* Edge gradient fades */
.marquee-fade-left,
.marquee-fade-right {
    position: absolute;
    top: 0;
    width: 220px;
    height: 100%;
    pointer-events: none;
    z-index: 10;
}

.marquee-fade-left {
    left: 0;
    background: linear-gradient(to right, var(--bg-color) 0%, transparent 100%);
}

.marquee-fade-right {
    right: 0;
    background: linear-gradient(to left, var(--bg-color) 0%, transparent 100%);
}

/* Marquee row */
.marquee-row {
    display: flex;
    width: 100%;
    overflow: hidden;
}

/* Pause entire row on hover */
.marquee-row:hover .marquee-track {
    animation-play-state: paused;
}

/* Track */
.marquee-track {
    display: flex;
    white-space: nowrap;
    animation: marquee-scroll-left 32s linear infinite;
    will-change: transform;
}

.marquee-track-reverse {
    animation: marquee-scroll-right 28s linear infinite;
}

@keyframes marquee-scroll-left {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes marquee-scroll-right {
    0%   { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

/* Marquee items */
.marquee-item {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: clamp(1rem, 1.8vw, 1.45rem);
    font-weight: 700;
    color: rgba(221, 227, 234, 0.18);
    text-transform: uppercase;
    letter-spacing: 3px;
    padding: 0 44px;
    transition: color 0.35s ease;
    cursor: default;
}

.marquee-item:hover {
    color: var(--accent);
}

.marquee-item.m-secondary {
    font-size: clamp(0.82rem, 1.3vw, 1.1rem);
    color: rgba(63, 169, 245, 0.18);
    letter-spacing: 2px;
}

.marquee-item.m-secondary:hover {
    color: var(--accent-light);
}

/* Accent dot separator */
.m-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.45;
    flex-shrink: 0;
    transition: opacity 0.3s ease, box-shadow 0.3s ease;
}

.marquee-item:hover .m-dot {
    opacity: 1;
    box-shadow: 0 0 8px var(--accent);
}

.marquee-item.m-secondary .m-dot {
    background: var(--accent-light);
}

.marquee-item.m-secondary:hover .m-dot {
    box-shadow: 0 0 8px var(--accent-light);
}

/* ---- Stats Row ---- */
.tech-stats {
    display: flex;
    align-items: center;
    gap: 52px;
    padding: 30px 52px;
    border: 1px solid rgba(63, 169, 245, 0.14);
    border-radius: 18px;
    background: rgba(63, 169, 245, 0.04);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    position: relative;
    overflow: hidden;
}

/* Subtle shimmer on stats box */
.tech-stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(63, 169, 245, 0.5), transparent);
}

.tech-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -2px;
}

.stat-plus {
    color: var(--accent);
    font-size: 0.65em;
    vertical-align: super;
}

.stat-label {
    font-family: var(--font-body);
    font-size: 0.72rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2.5px;
}

.tech-stat-divider {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, transparent, rgba(63, 169, 245, 0.3), transparent);
    flex-shrink: 0;
}

/* ---- Mobile ---- */
@media screen and (max-width: 768px) {

    .tech-stack-content {
        gap: 36px;
        padding: 0 16px;
    }

    .tech-main-title {
        font-size: clamp(1.8rem, 9vw, 3rem) !important;
        letter-spacing: -1px;
    }

    .tech-main-title::before,
    .tech-main-title::after {
        display: none; /* hide glitch layers on mobile for perf */
    }

    .marquee-fade-left,
    .marquee-fade-right {
        width: 60px;
    }

    .marquee-item {
        font-size: 0.95rem !important;
        padding: 0 28px !important;
        letter-spacing: 2px !important;
    }

    .marquee-item.m-secondary {
        font-size: 0.78rem !important;
        padding: 0 22px !important;
    }

    .tech-stats {
        gap: 24px;
        padding: 22px 28px;
        border-radius: 14px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .tech-stat-divider {
        display: none;
    }

    .stat-number {
        font-size: 1.8rem !important;
    }
}

/* ---- Tablet ---- */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .tech-stack-content {
        gap: 44px;
    }

    .tech-stats {
        gap: 36px;
        padding: 26px 36px;
    }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
    .marquee-track,
    .marquee-track-reverse,
    .tech-main-title::before,
    .tech-main-title::after {
        animation: none !important;
    }
}

/* ================================================================
   STACKING CARDS — Section Header & Transition Fix
   ================================================================ */

/* Header above the card stack */
.stacking-header {
    position: relative;
    z-index: 10;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    pointer-events: none;
}

.stacking-eyebrow {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 5px;
    color: var(--accent);
    text-transform: uppercase;
    opacity: 0.85;
}

.stacking-title {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 4vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--text-primary);
    line-height: 1;
}

/* Bottom fade — bleeds cleanly into contact/footer scene */
.stacking-container::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 120px;
    background: linear-gradient(to bottom, transparent, var(--bg-color));
    pointer-events: none;
    z-index: 20;
}

/* Stack card: slightly tighten height now header is present */
.cards-wrapper {
    position: relative;
    width: 85vw;
    max-width: 700px;
    height: 52vh;
    perspective: 1500px;
    z-index: 5;
}

/* Mobile */
@media screen and (max-width: 768px) {
    .stacking-container {
        gap: 18px;
    }

    .stacking-title {
        font-size: clamp(1.3rem, 6vw, 2rem) !important;
    }

    .stacking-eyebrow {
        font-size: 0.65rem;
        letter-spacing: 3px;
    }

    .cards-wrapper {
        width: 90vw !important;
        height: 54vh !important;
    }
}