/* ==========================================================================
   1970 Dodge Charger — Anti-Gravity Physics Portfolio Stylesheet
   Theme: Cinematic Dark Asphalt, Charcoal & Mopar Amber Accent
   ========================================================================== */

:root {
    --color-bg-dark: #0a0b0d;
    --color-bg-card: rgba(18, 20, 26, 0.75);
    --color-accent: #f26419;
    --color-accent-glow: rgba(242, 100, 25, 0.4);
    --color-text-main: #f0f2f5;
    --color-text-muted: #8e95a5;
    --font-heading: 'Bebas Neue', sans-serif;
    --font-sans: 'Rajdhani', sans-serif;
    --font-mono: 'Space Mono', monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-user-select: none;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--color-bg-dark);
    font-family: var(--font-sans);
    color: var(--color-text-main);
}

/* Background Atmosphere & Texture Layers */
.asphalt-overlay {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 50% 40%, rgba(242, 100, 25, 0.12) 0%, transparent 60%),
        radial-gradient(circle at 80% 80%, rgba(220, 40, 20, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, rgba(10, 11, 13, 0.7) 0%, rgba(5, 5, 7, 0.95) 100%);
    z-index: 0;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 0;
    opacity: 0.6;
    pointer-events: none;
}

.ambient-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70vw;
    height: 70vh;
    background: radial-gradient(circle, rgba(242, 100, 25, 0.09) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

/* Canvas Generated by Matter.js */
canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 10;
    pointer-events: auto;
}

/* UI Background Content (BEHIND PHYSICS CANVAS) */
.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 1200px;
    text-align: center;
    z-index: 1; /* Sits behind physics canvas (z-index 10) */
    pointer-events: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.hero-header {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.badge-tag {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.3em;
    color: var(--color-accent);
    background: rgba(242, 100, 25, 0.1);
    border: 1px solid rgba(242, 100, 25, 0.3);
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    margin-bottom: 1rem;
    text-transform: uppercase;
    box-shadow: 0 0 15px var(--color-accent-glow);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(3.5rem, 9.5vw, 10rem);
    line-height: 0.88;
    letter-spacing: 0.04em;
    color: #ffffff;
    text-shadow: 
        0 0 30px rgba(0, 0, 0, 0.9),
        0 10px 40px rgba(0, 0, 0, 0.8);
    background: linear-gradient(180deg, #ffffff 0%, #b0b5c0 60%, #686e7a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-family: var(--font-sans);
    font-size: clamp(0.9rem, 1.8vw, 1.3rem);
    font-weight: 600;
    letter-spacing: 0.25em;
    color: var(--color-text-muted);
    margin-top: 1rem;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.9);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
    width: 100%;
    max-width: 950px;
}

.spec-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    padding: 1rem 1.2rem;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.spec-value {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}

.spec-label {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
    margin-top: 0.2rem;
}

/* Top Navigation Header (IN FRONT OF CANVAS) */
.top-nav {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 20;
    pointer-events: auto;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 0.3rem;
    font-family: var(--font-heading);
    font-size: 2rem;
    letter-spacing: 0.05em;
}

.logo-main {
    color: #ffffff;
}

.logo-sub {
    color: var(--color-accent);
    font-size: 1.5rem;
}

.instruction-pill {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: #e0e4ec;
    letter-spacing: 0.15em;
    background: rgba(18, 20, 26, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-accent);
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.4); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.8; }
}

/* HUD Buttons */
.hud-btn {
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    color: #ffffff;
    background: rgba(22, 25, 33, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.6rem 1.4rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.25s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.hud-btn:hover {
    background: rgba(242, 100, 25, 0.2);
    border-color: var(--color-accent);
    color: #ffffff;
    box-shadow: 0 0 20px var(--color-accent-glow);
    transform: translateY(-2px);
}

.hud-btn:active {
    transform: translateY(0);
}

.hud-btn.highlight {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #ffffff;
    box-shadow: 0 0 20px var(--color-accent-glow);
}

.hud-btn.highlight:hover {
    background: #ff7629;
}

/* Bottom Controls Bar */
.bottom-controls {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 20;
    pointer-events: auto;
}

/* Modal Lightbox Popup */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(5, 6, 8, 0.88);
    backdrop-filter: blur(15px);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-card {
    background: #12141a;
    border: 1px solid rgba(242, 100, 25, 0.4);
    border-radius: 16px;
    width: 90%;
    max-width: 800px;
    padding: 2rem;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.9), 0 0 30px var(--color-accent-glow);
    transform: scale(1);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.hidden .modal-card {
    transform: scale(0.85);
}

.modal-close-btn {
    position: absolute;
    top: 1.2rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    transition: color 0.2s ease;
}

.modal-close-btn:hover {
    color: var(--color-accent);
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.modal-img-wrapper {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: #000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.modal-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.modal-details {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.modal-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent);
    letter-spacing: 0.2em;
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    letter-spacing: 0.05em;
    color: #ffffff;
    line-height: 1;
}

.modal-desc {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.modal-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
    margin-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
}

.modal-stat-item {
    display: flex;
    flex-direction: column;
}

.modal-stat-val {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--color-accent);
}

.modal-stat-key {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--color-text-muted);
}

/* Responsive Scaling */
@media (max-width: 900px) {
    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-body {
        grid-template-columns: 1fr;
    }

    .top-nav {
        padding: 1.2rem;
    }

    .instruction-pill {
        display: none;
    }
}

@media (max-width: 600px) {
    .hero-title {
        font-size: 3.2rem;
    }

    .specs-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.6rem;
    }

    .spec-value {
        font-size: 1.4rem;
    }

    .bottom-controls {
        flex-direction: column;
        width: 80%;
        bottom: 1.2rem;
    }

    .hud-btn {
        justify-content: center;
    }
}