/* CONCEPT BANNER — Full-width cinematic */
.concept-ego-preview {
    margin-top: 56px;
    border: 1px solid rgba(206, 254, 70, 0.15);
    background-color: #0a0a0a;
    overflow: hidden;
    position: relative;
    height: clamp(320px, 40vw, 480px);
    width: 100%;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6);
}

.concept-ego-preview::before {
    content: 'МОДЕЛЬНЫЙ РЯД 2026';
    position: absolute;
    top: 24px;
    left: 32px;
    z-index: 10;
    font-size: 11px;
    letter-spacing: 0.2em;
    color: var(--accent);
    font-weight: 600;
    font-family: 'Courier New', Courier, monospace;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    padding: 10px 20px;
    border: 1px solid rgba(206, 254, 70, 0.3);
}

/* Bottom gradient overlay with specs */
.concept-ego-preview::after {
    content: 'T-REX PLATFORM · АМГ5М · BRUTAL LUXURY';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10;
    font-family: 'Courier New', Courier, monospace;
    font-size: 9px;
    letter-spacing: 0.2em;
    color: rgba(206, 254, 70, 0.3);
    text-align: right;
    padding: 20px 32px;
    background: linear-gradient(to top, rgba(5,5,5,0.9) 0%, transparent 100%);
}

.concept-ego-slider {
    position: absolute;
    inset: 0;
}

.concept-ego-slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    opacity: 0;
    animation: egoFade 15s infinite;
    filter: brightness(0.85) contrast(1.1);
}

.concept-ego-slide:nth-child(1) { animation-delay: 0s; opacity: 1; }
.concept-ego-slide:nth-child(2) { animation-delay: 5s; }
.concept-ego-slide:nth-child(3) { animation-delay: 10s; }

@keyframes egoFade {
    0% { opacity: 0; } 8% { opacity: 1; } 33% { opacity: 1; } 41% { opacity: 0; } 100% { opacity: 0; }
}

.concept-ego-overlay {
    position: absolute;
    bottom: 40px;
    left: 32px;
    z-index: 10;
    max-width: 600px;
}

.concept-ego-overlay h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(20px, 3vw, 30px);
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
    letter-spacing: 0.02em;
}

.concept-ego-overlay p {
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 300;
    line-height: 1.6;
}

@media (max-width: 767px) {
    .concept-ego-overlay {
        bottom: 24px;
        left: 20px;
        max-width: 280px;
    }
    .concept-ego-overlay h3 {
        font-size: 18px;
    }
    .concept-ego-overlay p {
        font-size: 11px;
    }
}

/* CONCEPT PLATFORM — wider, more premium */
.concept-platform {
    margin-top: 56px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    position: relative;
}

.concept-platform > .mono {
    font-family: 'Courier New', Courier, monospace;
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
}

.concept-platform > p {
    margin-top: 12px;
    margin-bottom: 32px;
    max-width: 700px;
    font-family: 'Montserrat', sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.55);
    font-weight: 300;
}

.concept-grid {
    display: grid; gap: 28px; grid-template-columns: 1fr;
}

@media (min-width: 900px) {
    .concept-grid { grid-template-columns: repeat(2, 1fr); }
}

.concept-card {
    background-color: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

/* Accent top line for concept cards */
.concept-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent 50%);
    opacity: 0.3;
    transition: opacity 0.4s ease;
}

/* concept-card hover removed — cards are not clickable */

.concept-card h3 {
    margin-bottom: 4px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.concept-card p {
    max-width: 100%;
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    font-weight: 300;
    line-height: 1.6;
}

.badge-concept {
    background-color: rgba(206, 254, 70, 0.15);
    border-color: var(--accent);
    color: var(--accent);
    width: fit-content;
}

/* CONCEPT MEDIA */
.concept-media {
    position: relative; margin-top: 8px; margin-bottom: 10px;
    border: var(--border-thin); background: #000;
    overflow: hidden; aspect-ratio: 16 / 10;
}

.concept-media input { position: absolute; opacity: 0; pointer-events: none; }
.concept-media-slider { position: absolute; inset: 0; }

.concept-media-slide {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    object-fit: cover; object-position: center; display: block; opacity: 0; transition: opacity 0.4s ease;
    min-width: 100%; min-height: 100%;
}

/* Show active slide based on checked radio */
.concept-media input:nth-of-type(1):checked ~ .concept-media-slider .concept-media-slide:nth-child(1),
.concept-media input:nth-of-type(2):checked ~ .concept-media-slider .concept-media-slide:nth-child(2),
.concept-media input:nth-of-type(3):checked ~ .concept-media-slider .concept-media-slide:nth-child(3),
.concept-media input:nth-of-type(4):checked ~ .concept-media-slider .concept-media-slide:nth-child(4) { opacity: 1; }

/* Navigation arrows */
.concept-media-nav { position: absolute; inset: 0; pointer-events: none; }
.concept-media-nav label { display: none; }

.concept-nav-arrow {
    width: 42px; height: 42px; position: absolute; top: 50%; transform: translateY(-50%);
    display: inline-flex; align-items: center; justify-content: center;
    border: 1px solid rgba(255,255,255,0.15); background: rgba(0,0,0,0.65);
    color: var(--accent); font-size: 22px; font-weight: 700;
    cursor: pointer; user-select: none; transition: var(--transition);
    backdrop-filter: blur(8px); pointer-events: auto;
}
.concept-nav-arrow:hover {
    border-color: var(--accent); background: rgba(0,0,0,0.85);
    box-shadow: 0 0 12px rgba(206,254,70,0.2);
}
.concept-nav-prev { left: 10px; }
.concept-nav-next { right: 10px; }

/* Show correct arrow pair for active slide */
.concept-media input:nth-of-type(1):checked ~ .concept-media-nav .nav-for-1,
.concept-media input:nth-of-type(2):checked ~ .concept-media-nav .nav-for-2,
.concept-media input:nth-of-type(3):checked ~ .concept-media-nav .nav-for-3,
.concept-media input:nth-of-type(4):checked ~ .concept-media-nav .nav-for-4 { display: inline-flex; }

/* SPLIT SCREEN */
.split-screen {
    display: flex; flex-direction: column; border: var(--border-thin);
}

@media (min-width: 768px) {
    .split-screen { flex-direction: row; }
}

.split-media, .split-content { flex: 1; }

.split-media {
    background-color: #000; min-height: 400px;
    position: relative; display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}

.dna-video {
    width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0.95;
}

.split-content {
    padding: 64px 48px; background-color: var(--bg-card);
    display: flex; flex-direction: column; justify-content: center;
}
/* Mobile padding adjustment */
@media (max-width: 767px) { .split-content { padding: 40px 20px; } }

.stat-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
    margin: 32px 0; border-top: 1px solid #333; padding-top: 24px;
}

.stat-item span {
    display: block; font-size: 24px; color: var(--text-main); font-weight: 700;
}

.stat-item label {
    font-size: 12px; color: var(--text-muted); text-transform: uppercase;
}

/* --- Routes Section --- */