/* ============================================
   STUDIO CHENILLE — Premium Visual Effects
   ============================================ */

/* --- 1. Film Grain Texture Overlay --- */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 9998;
    pointer-events: none;
    opacity: 0;
    mix-blend-mode: overlay;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    animation: grainFadeIn 2s ease 2.5s forwards;
}

@keyframes grainFadeIn {
    to { opacity: 0.035; }
}

[data-theme="dark"] body::after {
    opacity: 0.05;
    mix-blend-mode: soft-light;
}

/* --- 2. Scroll Progress Indicator --- */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent-dark), var(--color-accent), var(--color-accent-light));
    z-index: 10001;
    transform-origin: left;
    transform: scaleX(0);
    will-change: transform;
    pointer-events: none;
}

/* --- 3. Custom Cursor --- */
.custom-cursor {
    position: fixed;
    width: 40px;
    height: 40px;
    border: 1.5px solid var(--color-accent);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.5);
    transition: opacity 0.3s ease, transform 0.3s ease, width 0.3s ease, height 0.3s ease, border-color 0.3s ease;
    mix-blend-mode: difference;
    will-change: transform;
}

.custom-cursor.visible {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.custom-cursor.hover {
    width: 80px;
    height: 80px;
    border-color: var(--color-accent-light);
    background: rgba(184, 146, 106, 0.08);
}

.custom-cursor.hover::after {
    content: 'View';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent-light);
    white-space: nowrap;
}

/* --- 4. Portfolio Wipe Reveal --- */
.portfolio-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-accent);
    z-index: 3;
    transform: scaleX(0);
    transform-origin: left;
    pointer-events: none;
}

.portfolio-item.wipe-reveal .portfolio-image::before {
    animation: goldWipe 1.2s var(--ease-in-out) forwards;
}

.portfolio-item.wipe-reveal .portfolio-image img {
    animation: imageReveal 0.01s linear 0.6s forwards;
}

.portfolio-item:not(.wipe-reveal) .portfolio-image img {
    opacity: 1;
}

.portfolio-item.wipe-pending .portfolio-image img {
    opacity: 0;
}

@keyframes goldWipe {
    0%   { transform: scaleX(0); transform-origin: left; }
    45%  { transform: scaleX(1); transform-origin: left; }
    55%  { transform: scaleX(1); transform-origin: right; }
    100% { transform: scaleX(0); transform-origin: right; }
}

@keyframes imageReveal {
    to { opacity: 1; }
}

/* --- 5. Blur-Up Image Effect --- */
.blur-up {
    filter: blur(12px);
    transform: scale(1.04);
    transition: filter 1s var(--ease-out), transform 1s var(--ease-out);
}

.blur-up.loaded {
    filter: blur(0);
    transform: scale(1);
}

/* --- 6. Text Split Animation --- */
.split-word {
    display: inline-block;
    overflow: hidden;
}

.split-char {
    display: inline-block;
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 0.5s ease, transform 0.5s ease;
    transition-delay: calc(var(--i) * 0.04s);
}

.split-animated .split-char {
    opacity: 1;
    transform: translateY(0);
}

/* Preserve spaces between words */
.split-word + .split-word {
    margin-left: 0.3em;
}

/* --- 7. Particle Canvas --- */
.hero-particles {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

/* --- 8. Portfolio Lightbox --- */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 10002;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(26, 23, 20, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 85vh;
    z-index: 1;
    transform: scale(0.95) translateY(20px);
    transition: transform 0.4s var(--ease-out);
}

.lightbox.active .lightbox-content {
    transform: scale(1) translateY(0);
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
}

.lightbox-info {
    position: absolute;
    bottom: -50px;
    left: 0;
    right: 0;
    text-align: center;
    color: rgba(253, 251, 247, 0.7);
    font-size: 14px;
}

.lightbox-info h3 {
    font-family: var(--font-heading);
    font-size: 20px;
    color: var(--color-text-inverse);
    margin-bottom: 4px;
}

.lightbox-close {
    position: fixed;
    top: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    border: none;
    background: rgba(253, 251, 247, 0.1);
    border-radius: 50%;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.lightbox-close:hover {
    background: rgba(253, 251, 247, 0.2);
}

.lightbox-close svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-inverse);
}

.lightbox-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: 1px solid rgba(253, 251, 247, 0.2);
    background: rgba(253, 251, 247, 0.05);
    border-radius: 50%;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.lightbox-nav:hover {
    background: rgba(253, 251, 247, 0.15);
    border-color: rgba(253, 251, 247, 0.4);
}

.lightbox-nav svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-inverse);
}

.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

/* --- 9. Page Transition Overlay --- */
.page-transition {
    position: fixed;
    inset: 0;
    z-index: 10003;
    background: var(--color-bg-dark);
    transform: translateY(100%);
    transition: transform 0.5s var(--ease-in-out);
    pointer-events: none;
}

.page-transition.entering {
    transform: translateY(0);
    pointer-events: all;
}

.page-transition.exiting {
    transform: translateY(-100%);
}

/* --- 10. Dark Mode --- */
:root[data-theme="dark"] {
    --color-bg: #1A1714;
    --color-bg-alt: #242019;
    --color-bg-card: #2C2824;
    --color-bg-dark: #0E0C0A;
    --color-text: #FDFBF7;
    --color-text-light: #B0AAA4;
    --color-text-muted: #7A746E;
    --color-text-inverse: #1A1714;
    --color-border: rgba(253, 251, 247, 0.1);
    --color-border-light: rgba(253, 251, 247, 0.06);
    --color-accent-subtle: rgba(184, 146, 106, 0.15);
}

/* Dark mode specific overrides */
[data-theme="dark"] .header.scrolled {
    background: #1A1714;
    box-shadow: 0 1px 0 rgba(253, 251, 247, 0.06);
}

[data-theme="dark"] .header:not(.scrolled) .nav-logo-text,
[data-theme="dark"] .header:not(.scrolled) .nav-link,
[data-theme="dark"] .header:not(.scrolled) .nav-logo-mark {
    color: var(--color-text);
}

[data-theme="dark"] .service-card {
    background: var(--color-bg-card);
    border-color: var(--color-border);
}

[data-theme="dark"] .service-card:hover {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .contact-form-wrapper {
    background: var(--color-bg-card);
    border-color: var(--color-border);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea,
[data-theme="dark"] .form-group select {
    background: var(--color-bg-alt);
    border-color: var(--color-border);
    color: var(--color-text);
}

[data-theme="dark"] .testimonials-cta {
    background: var(--color-bg-card);
    border-color: var(--color-border);
}

[data-theme="dark"] .filter-btn {
    border-color: var(--color-border);
    color: var(--color-text-light);
}

[data-theme="dark"] .cookie-banner {
    background: #0E0C0A;
}

[data-theme="dark"] .sticky-cta {
    background: var(--color-bg-card);
    border-color: var(--color-border);
}

[data-theme="dark"] .location-card,
[data-theme="dark"] .blog-card {
    background: var(--color-bg-card);
    border-color: var(--color-border);
}

/* Dark mode toggle button */
.dark-mode-toggle {
    width: 36px;
    height: 36px;
    border: none;
    background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s ease;
    margin-right: 12px;
}

.dark-mode-toggle:hover {
    background: var(--color-accent-subtle);
}

.dark-mode-toggle svg {
    width: 18px;
    height: 18px;
    color: var(--color-text-light);
    transition: color 0.3s ease;
}

.header:not(.scrolled) .dark-mode-toggle svg {
    color: rgba(253, 251, 247, 0.7);
}

/* Dark mode — sun icon shown, moon hidden (and vice versa) */
.dark-mode-toggle .icon-moon { display: block; }
.dark-mode-toggle .icon-sun { display: none; }
[data-theme="dark"] .dark-mode-toggle .icon-moon { display: none; }
[data-theme="dark"] .dark-mode-toggle .icon-sun { display: block; }

/* Smooth transition for theme change */
body {
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* --- 11. Enhanced Scroll Animations --- */
[data-animate="scale-in"] {
    opacity: 0;
    transform: scale(0.92);
}

[data-animate="scale-in"].animated {
    opacity: 1;
    transform: scale(1);
}

/* --- 12. Magnetic Button Hover Zone --- */
.btn-magnetic {
    transition: transform 0.3s var(--ease-out);
}

/* --- 13. Neighbours Section --- */
.neighbours-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.neighbour-card {
    text-align: center;
    padding: 32px 20px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-medium);
}

.neighbour-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
    border-color: var(--color-accent-subtle);
}

.neighbour-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.neighbour-card h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 6px;
}

.neighbour-card p {
    font-size: 13px;
    color: var(--color-text-muted);
}

.neighbour-distance {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-top: 8px;
}

@media (max-width: 768px) {
    .neighbours-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .custom-cursor {
        display: none !important;
    }

    /* Disable heavy effects on mobile for performance */
    body::after {
        display: none !important;
    }

    .portfolio-image::before {
        display: none !important;
    }

    .portfolio-item .portfolio-image img,
    .portfolio-item.wipe-pending .portfolio-image img {
        opacity: 1 !important;
    }

    .scroll-progress {
        display: none;
    }

    .lightbox-nav {
        width: 40px;
        height: 40px;
    }

    .lightbox-prev { left: 12px; }
    .lightbox-next { right: 12px; }
}

@media (max-width: 480px) {
    .neighbours-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    .split-char {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    .portfolio-item .portfolio-image img {
        opacity: 1 !important;
    }

    .portfolio-item .portfolio-image::before {
        display: none !important;
    }

    .blur-up {
        filter: none !important;
        transform: none !important;
    }

    .page-transition {
        display: none !important;
    }

    .scroll-progress {
        display: none;
    }

    body::after {
        display: none;
    }
}