/* =========================================
   AI PRODUCTION PAGE — Premium Rebuild
   ========================================= */

/* ---------- Scroll Reveal System ---------- */
.reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

.reveal-left {
    opacity: 0;
    transform: translateX(-80px);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
    opacity: 0;
    transform: translateX(80px);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

.reveal-scale {
    opacity: 0;
    transform: scale(0.92);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-scale.visible { opacity: 1; transform: scale(1); }

/* Staggered children */
.stagger-children .reveal { transition-delay: 0s; }
.stagger-children .reveal:nth-child(1) { transition-delay: 0.05s; }
.stagger-children .reveal:nth-child(2) { transition-delay: 0.12s; }
.stagger-children .reveal:nth-child(3) { transition-delay: 0.19s; }
.stagger-children .reveal:nth-child(4) { transition-delay: 0.26s; }

/* ---------- Hero Section ---------- */
.aip-hero {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.aip-hero-video-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.aip-hero-video-bg video {
    width: 100%; height: 100%;
    object-fit: cover;
}
.aip-hero-video-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.3) 50%, transparent 100%);
    pointer-events: none;
}

.aip-hero-spotlight {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle 600px at var(--mx, 50%) var(--my, 50%),
        rgba(119, 119, 255, 0.12), transparent 70%);
    mix-blend-mode: screen;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s;
}
.aip-hero:hover .aip-hero-spotlight { opacity: 1; }

.aip-hero-content {
    position: relative;
    z-index: 2;
    padding: 0 5vw;
    max-width: 1200px;
}

.aip-hero .aip-label {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    color: var(--ai-accent, #7777ff);
    font-weight: 600;
    margin-bottom: 1.5rem;
    display: block;
}

.aip-hero-title {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: clamp(3rem, 7vw, 6rem);
    line-height: 1;
    letter-spacing: -0.04em;
    text-transform: uppercase;
    color: #ffffff;
    margin-bottom: 1.5rem;
    opacity: 0; transform: translateY(30px);
    animation: aipFadeUp 1s ease-out 0.4s forwards;
}
.aip-hero-title em {
    font-style: normal;
    font-weight: 800;
}

.aip-hero-desc {
    font-weight: 300;
    font-size: clamp(1rem, 1.6vw, 1.3rem);
    line-height: 1.6;
    color: rgba(255,255,255,0.85);
    max-width: 600px;
    opacity: 0; transform: translateY(30px);
    animation: aipFadeUp 1s ease-out 0.7s forwards;
}
.aip-hero-desc-secondary {
    font-weight: 300;
    font-size: clamp(0.9rem, 1.2vw, 1.05rem);
    line-height: 1.6;
    color: rgba(255,255,255,0.6);
    max-width: 600px;
    margin-top: 0.8rem;
    opacity: 0; transform: translateY(30px);
    animation: aipFadeUp 1s ease-out 0.9s forwards;
}

.aip-scroll-cue {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    z-index: 2;
    opacity: 0;
    animation: aipFadeUp 1s ease-out 1.2s forwards;
}
.aip-scroll-cue span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
}
.aip-scroll-line {
    width: 1px; height: 40px;
    background: rgba(255,255,255,0.2);
    position: relative;
    overflow: hidden;
}
.aip-scroll-line::after {
    content: '';
    position: absolute;
    top: -100%;
    width: 100%; height: 50%;
    background: var(--ai-accent, #7777ff);
    animation: aipScrollPulse 2s ease-in-out infinite;
}

@keyframes aipFadeUp {
    to { opacity: 1; transform: translateY(0); }
}
@keyframes aipScrollPulse {
    0% { top: -50%; }
    100% { top: 150%; }
}

/* ---------- Manifesto Section ---------- */
.aip-manifesto {
    padding: clamp(6rem, 15vh, 12rem) 5vw;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    min-height: 60vh;
}

.aip-manifesto-inner {
    max-width: 900px;
}

.aip-manifesto-text {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: clamp(1.8rem, 4vw, 3.5rem);
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: #ffffff;
}
.aip-manifesto-text .accent {
    color: var(--ai-accent, #7777ff);
}

.aip-manifesto-sub {
    margin-top: 2rem;
    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
    color: rgba(255,255,255,0.5);
    font-weight: 300;
    line-height: 1.7;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ---------- Capability Section ---------- */
.aip-capability {
    padding: clamp(5rem, 10vh, 8rem) 0;
    overflow: hidden;
}

.aip-cap-row {
    display: flex;
    align-items: center;
    gap: clamp(3rem, 6vw, 6rem);
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5vw;
}
.aip-cap-row.reverse {
    flex-direction: row-reverse;
}

.aip-cap-text {
    flex: 1 1 50%;
    min-width: 0;
}
.aip-cap-visual {
    flex: 1 1 45%;
    min-width: 0;
    position: relative;
}

.aip-cap-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    color: var(--ai-accent, #7777ff);
    font-weight: 600;
    margin-bottom: 1rem;
    display: block;
}

/* Hover Language Swap */
.hover-swap {
    display: grid;
}
.hover-swap > * {
    grid-area: 1 / 1;
    transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.hover-swap .lang-ko {
    opacity: 0;
    pointer-events: none;
    transform: translateY(6px);
}
.hover-swap .lang-en {
    opacity: 1;
    transform: translateY(0);
}
.aip-cap-text:hover .hover-swap .lang-en,
.aip-hero-content:hover .hover-swap .lang-en,
.hover-trigger:hover .hover-swap .lang-en {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
}
.aip-cap-text:hover .hover-swap .lang-ko,
.aip-hero-content:hover .hover-swap .lang-ko,
.hover-trigger:hover .hover-swap .lang-ko {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.aip-cap-title {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1;
    letter-spacing: -0.04em;
    text-transform: uppercase;
    color: #ffffff;
    margin-bottom: 1.5rem;
}

.aip-cap-desc {
    font-size: clamp(0.95rem, 1.1vw, 1.05rem);
    line-height: 1.7;
    color: rgba(255,255,255,0.65);
    font-weight: 300;
    margin-bottom: 2rem;
}

.aip-tag-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}
.aip-tag-list li {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--ai-accent, #7777ff);
    border: 1px solid rgba(119, 119, 255, 0.3);
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    transition: background 0.3s, color 0.3s;
}
.aip-tag-list li:hover {
    background: var(--ai-accent, #7777ff);
    color: #000;
}

.aip-cap-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: white;
    text-decoration: none;
    padding: 0.85rem 2rem;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 999px;
    background: rgba(255,255,255,0.04);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.aip-cap-link:hover {
    background: white;
    color: #000;
    border-color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}
.aip-cap-link .arrow {
    transition: transform 0.3s;
}
.aip-cap-link:hover .arrow {
    transform: translateX(4px);
}

/* Video container */
.aip-video-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: #111;
    border: 1px solid rgba(255,255,255,0.06);
    transition: border-color 0.4s, box-shadow 0.4s;
}
.aip-video-card:hover {
    border-color: rgba(119, 119, 255, 0.3);
    box-shadow: 0 0 60px rgba(119, 119, 255, 0.08);
}
.aip-video-card video {
    width: 100%; height: 100%;
    object-fit: cover;
}

/* Style gallery grid */
.aip-style-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-top: 1.5rem;
}
.aip-style-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 1;
    border: 1px solid rgba(255,255,255,0.06);
    transition: border-color 0.3s, transform 0.4s;
}
.aip-style-item:hover {
    border-color: rgba(119, 119, 255, 0.3);
    transform: scale(1.03);
}
.aip-style-item img {
    width: 100%; height: 100%;
    object-fit: cover;
    filter: grayscale(40%);
    transition: filter 0.5s;
}
.aip-style-item:hover img {
    filter: grayscale(0%);
}
.aip-style-item .style-label {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 0.6rem 0.8rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    color: white;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    text-transform: uppercase;
}

/* ---------- Process Horizontal Scroll ---------- */
.aip-process {
    padding: clamp(5rem, 10vh, 8rem) 0;
    overflow: hidden;
    position: relative;
}

.aip-process-header {
    padding: 0 5vw;
    margin-bottom: 3rem;
}

.aip-process-track {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding: 0 5vw 2rem;
}

.aip-process-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: border-color 0.4s, background 0.4s;
}
.aip-process-card:hover {
    border-color: rgba(119, 119, 255, 0.25);
    background: rgba(119, 119, 255, 0.03);
}

.aip-process-card .ghost-num {
    position: absolute;
    top: -20px;
    right: -10px;
    font-family: 'Inter', sans-serif;
    font-weight: 900;
    font-size: 10rem;
    line-height: 1;
    color: var(--ai-accent, #7777ff);
    opacity: 0.04;
    pointer-events: none;
    user-select: none;
}

.aip-process-card .card-image {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255,255,255,0.05);
}
.aip-process-card .card-image img {
    width: 100%; height: 100%;
    object-fit: cover;
    filter: grayscale(30%);
    transition: filter 0.5s, transform 0.5s;
}
.aip-process-card:hover .card-image img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.aip-process-card .step-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--ai-accent, #7777ff);
    margin-bottom: 0.75rem;
    display: block;
}

.aip-process-card h4 {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
    color: white;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: -0.01em;
}

.aip-process-card p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.55);
    font-weight: 300;
}

.aip-process-scroll-hint {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem 5vw 0;
    color: rgba(255,255,255,0.3);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
}
.aip-process-scroll-hint .line {
    flex: 0 0 40px;
    height: 1px;
    background: rgba(255,255,255,0.2);
}

/* ---------- Comparison Slider (Improved) ---------- */
.aip-compare {
    padding: clamp(5rem, 10vh, 8rem) 0;
}

.aip-compare-wrapper {
    width: 100%;
    margin: 0 auto;
    padding: 0 5vw;
}

.aip-compare-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    border-radius: 16px;
    cursor: ew-resize;
    touch-action: none;
    border: 1px solid rgba(255,255,255,0.08);
    margin-top: 2rem;
}
.aip-compare-container img {
    width: 100%; height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0; left: 0;
    pointer-events: none;
    user-select: none;
}

.aip-compare-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 50%;
    height: 100%;
    overflow: hidden;
    will-change: width;
}
.aip-compare-overlay img {
    width: auto;
    min-width: 100%;
}

.aip-compare-handle {
    position: absolute;
    top: 0;
    left: 50%;
    width: 3px;
    height: 100%;
    background: var(--ai-accent, #7777ff);
    transform: translateX(-50%);
    z-index: 5;
    pointer-events: none;
    box-shadow: 0 0 15px rgba(119, 119, 255, 0.4);
}
.aip-compare-handle::before,
.aip-compare-handle::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 0; height: 0;
}
.aip-compare-handle::before {
    top: 50%;
    margin-top: -20px;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-right: 10px solid var(--ai-accent, #7777ff);
    margin-left: -12px;
}
.aip-compare-handle::after {
    top: 50%;
    margin-top: -20px;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 10px solid var(--ai-accent, #7777ff);
    margin-left: 9px;
}

.aip-compare-handle-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 44px; height: 44px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: var(--ai-accent, #7777ff);
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    box-shadow: 0 0 20px rgba(119,119,255,0.5);
}
.aip-compare-handle-circle svg {
    width: 20px; height: 20px;
    fill: none;
    stroke: white;
    stroke-width: 2;
}

.aip-compare-label-left,
.aip-compare-label-right {
    position: absolute;
    bottom: 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    color: rgba(255,255,255,0.6);
    text-transform: uppercase;
    background: rgba(0,0,0,0.4);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    z-index: 4;
    pointer-events: none;
}
.aip-compare-label-left { left: 1rem; }
.aip-compare-label-right { right: 1rem; }

/* ---------- Stats Counter ---------- */
.aip-stats {
    padding: clamp(4rem, 8vh, 6rem) 0;
    border-top: 1px solid rgba(255,255,255,0.06);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.aip-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5vw;
}

.aip-stat {
    text-align: center;
    padding: 2.5rem 1.5rem;
    position: relative;
}
.aip-stat:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0; top: 20%; bottom: 20%;
    width: 1px;
    background: rgba(255,255,255,0.08);
}

.aip-stat-num {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: clamp(2.5rem, 4vw, 4rem);
    letter-spacing: -0.03em;
    color: white;
    line-height: 1;
    margin-bottom: 0.5rem;
}
.aip-stat-num .suffix {
    font-size: 0.5em;
    font-weight: 600;
    opacity: 0.7;
}

.aip-stat-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--ai-accent, #7777ff);
    text-transform: uppercase;
    margin-bottom: 0.3rem;
}

.aip-stat-desc {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
    font-weight: 300;
}

/* ---------- Insights Banner ---------- */
.aip-insights {
    padding: clamp(4rem, 8vh, 6rem) 0;
    background: linear-gradient(90deg, rgba(119, 119, 255, 0.04) 0%, transparent 100%);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.aip-insights-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

/* ---------- CTA Section ---------- */
.aip-cta {
    padding: clamp(6rem, 12vh, 10rem) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.aip-cta-glow {
    position: absolute;
    top: 50%; left: 50%;
    width: 600px; height: 600px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(119, 119, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.aip-cta-title {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: clamp(3rem, 6vw, 5rem);
    letter-spacing: -0.04em;
    text-transform: uppercase;
    color: white;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.aip-cta-sub {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.6);
    font-weight: 400;
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
}

.aip-cta-nav {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

/* ---------- Divider ---------- */
.aip-divider {
    width: 100%;
    height: 1px;
    background: rgba(255,255,255,0.06);
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 1024px) {
    .aip-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .aip-stat:nth-child(2)::after { display: none; }
    .aip-stat:nth-child(1),
    .aip-stat:nth-child(2) {
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }
}

@media (max-width: 768px) {
    .aip-hero {
        padding: 12vh 1.5rem 0 1.5rem;
        justify-content: flex-start;
        align-items: flex-start;
    }
    .aip-hero-content {
        padding: 0;
    }
    .aip-hero-title {
        font-size: clamp(2.8rem, 12vw, 4rem);
    }
    .aip-hero-video-bg::after {
        background: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.3) 100%);
    }
    .aip-scroll-cue { display: none; }

    .aip-cap-row,
    .aip-cap-row.reverse {
        flex-direction: column;
        gap: 2rem;
    }
    .aip-cap-text,
    .aip-cap-visual {
        flex: none;
        width: 100%;
    }

    .aip-manifesto {
        padding: 5rem 1.5rem;
        min-height: auto;
    }
    .aip-manifesto-text {
        font-size: clamp(1.5rem, 6vw, 2rem);
    }

    .aip-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .aip-stat { padding: 1.5rem 1rem; }
    .aip-stat:not(:last-child)::after { display: none; }
    .aip-stat:nth-child(1),
    .aip-stat:nth-child(2) {
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }

    .aip-insights-inner {
        flex-direction: column;
        text-align: center;
    }

    .aip-process-track {
        grid-template-columns: 1fr;
    }
    .aip-process-card {
        padding: 1.5rem;
    }

    .aip-cta-title {
        font-size: clamp(2.5rem, 10vw, 3.5rem);
    }
}