/* ==========================================================================
   STUDIO CASTELLIN - COMPONENTS STYLESHEET
   Interactive Components & UI Elements
   ========================================================================== */

/* Navigation
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    padding: var(--space-md) 0;
    transition: background-color var(--transition-base), backdrop-filter var(--transition-base), padding var(--transition-base);
}

.navbar.scrolled {
    background-color: var(--color-overlay);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-sm) 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-ui);
    font-size: var(--text-xl);
    letter-spacing: 0.05em;
    color: #FFFFFF;
    /* White by default for dark hero */
    transition: color var(--transition-base);
    display: flex;
    align-items: center;
}

/* When scrolled, logo follows theme color */
.navbar.scrolled .logo {
    color: var(--color-text-primary);
}

.logo-light {
    font-weight: 300;
}

.logo-bold {
    font-weight: 700;
}

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

/* Fix for pages without dark hero background */
body:not(.has-hero) .navbar {
    background-color: var(--color-overlay) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1) !important;
}

body:not(.has-hero) .navbar .logo {
    color: var(--color-text-primary) !important;
}

body:not(.has-hero) .navbar .nav-link {
    color: var(--color-text-primary) !important;
}

body:not(.has-hero) .navbar .menu-toggle span {
    background-color: var(--color-text-primary) !important;
}

body:not(.has-hero) .navbar .theme-toggle {
    border-color: var(--color-border) !important;
    color: var(--color-text-primary) !important;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
}

.nav-link {
    font-family: var(--font-ui);
    font-size: var(--text-sm);
    font-weight: 500;
    text-transform: uppercase;
    color: #FFFFFF;
    /* White by default for dark hero */
    position: relative;
    padding: var(--space-xs) 0;
    transition: color var(--transition-base);
}

/* When scrolled, nav links follow theme color */
.navbar.scrolled .nav-link {
    color: var(--color-text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-accent);
}

.nav-link:hover::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.menu-toggle span {
    width: 28px;
    height: 2px;
    background-color: #FFFFFF;
    /* White by default for dark hero */
    transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

/* When scrolled, hamburger follows theme color */
.navbar.scrolled .menu-toggle span {
    background-color: var(--color-text-primary);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 2px solid rgba(255, 255, 255, 0.3);
    /* Semi-transparent white border by default */
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color var(--transition-base), background-color var(--transition-base);
    position: relative;
    color: #FFFFFF;
    /* White icon by default */
}

/* When scrolled, theme toggle follows theme style */
.navbar.scrolled .theme-toggle {
    border-color: var(--color-border);
    color: var(--color-text-primary);
}

.theme-toggle:hover {
    border-color: var(--color-accent);
    background-color: var(--color-accent);
}

.theme-toggle svg {
    position: absolute;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

[data-theme="dark"] .sun-icon {
    opacity: 1;
    transform: rotate(0deg);
}

[data-theme="dark"] .moon-icon {
    opacity: 0;
    transform: rotate(90deg);
}

[data-theme="light"] .sun-icon {
    opacity: 0;
    transform: rotate(-90deg);
}

[data-theme="light"] .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
}

/* Hero Section
   ========================================================================== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg,
            rgba(0, 0, 0, 0.3) 0%,
            rgba(0, 0, 0, 0.5) 50%,
            rgba(0, 0, 0, 0.7) 100%);
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 900px;
    padding: 0 var(--space-lg);
}

.hero-title {
    font-size: var(--text-6xl);
    font-weight: 300;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    color: #FFFFFF;
}

.hero-title .line-1,
.hero-title .line-2 {
    display: block;
}

.hero-subtitle {
    font-family: var(--font-ui);
    font-size: var(--text-lg);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.hero-location {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.8);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    color: #FFFFFF;
    animation: bounce 2s infinite;
}

/* Service Cards
   ========================================================================== */
.service-card {
    background: var(--color-bg-secondary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
    text-align: center;
}

.service-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(212, 175, 55, 0.1);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    padding: var(--space-md);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    transition: background-color var(--transition-base), color var(--transition-base);
}

.service-card:hover .service-icon {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.service-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-sm);
}

.service-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Accordion (Common Issues)
   ========================================================================== */
.issues-section {
    max-width: 900px;
    margin: var(--space-3xl) auto 0;
}

.subsection-title {
    font-size: var(--text-3xl);
    text-align: center;
    margin-bottom: var(--space-xl);
}

.accordion {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.accordion-item {
    border-bottom: 1px solid var(--color-border);
}

.accordion-item:last-child {
    border-bottom: none;
}

.accordion-header {
    width: 100%;
    padding: var(--space-lg) var(--space-xl);
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    color: var(--color-text-primary);
    text-align: left;
    transition: background-color var(--transition-base);
}

.accordion-header:hover {
    background-color: var(--color-bg-tertiary);
}

.accordion-header svg {
    flex-shrink: 0;
    transition: transform var(--transition-base);
    color: var(--color-accent);
}

.accordion-item.active .accordion-header svg {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
}

.accordion-item.active .accordion-content {
    max-height: 200px;
    padding: 0 var(--space-xl) var(--space-lg);
}

.accordion-content p {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* Project Filters
   ========================================================================== */
.project-filters {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.filter-btn {
    font-family: var(--font-ui);
    font-size: var(--text-sm);
    padding: var(--space-sm) var(--space-lg);
    background: none;
    border: 2px solid var(--color-border);
    border-radius: 50px;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: border-color var(--transition-base), background-color var(--transition-base), color var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--color-accent);
    background-color: var(--color-accent);
    color: var(--color-bg);
}

/* Projects Grid
   ========================================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.project-card {
    opacity: 1;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.project-card.hidden {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
    position: absolute;
}

.project-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-xl);
    background: linear-gradient(0deg, rgba(0, 0, 0, 0.9) 0%, transparent 100%);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.project-card:hover .project-overlay {
    transform: translateY(0);
}

.project-title {
    font-size: var(--text-2xl);
    color: #FFFFFF;
    margin-bottom: var(--space-xs);
}

.project-location {
    font-size: var(--text-sm);
    color: var(--color-accent);
}

/* Before/After Slider
   ========================================================================== */
.before-after-container {
    position: relative;
}

.before-after-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: ew-resize;
}

.before-image,
.after-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.after-image {
    clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
}

.slider-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    transform: translateX(-50%);
    pointer-events: none;
}

.slider-line {
    width: 100%;
    height: 100%;
    background-color: var(--color-accent);
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.slider-button {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 48px;
    height: 48px;
    background-color: var(--color-accent);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    pointer-events: none;
}

/* Project List
   ========================================================================== */
.project-list-section {
    text-align: center;
}

.expand-btn {
    font-family: var(--font-ui);
    font-size: var(--text-base);
    padding: var(--space-md) var(--space-xl);
    background: none;
    border: 2px solid var(--color-accent);
    border-radius: 50px;
    color: var(--color-accent);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    transition: background-color var(--transition-base), color var(--transition-base);
}

.expand-btn:hover {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.expand-btn svg {
    transition: transform var(--transition-base);
}

.expand-btn.active svg {
    transform: rotate(180deg);
}

.project-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), margin var(--transition-slow);
}

.project-list.expanded {
    max-height: 600px;
    margin-top: var(--space-2xl);
}

.project-list h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-xl);
}

.list-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    max-width: 900px;
    margin: 0 auto;
}

.list-columns ul {
    list-style: none;
    text-align: left;
}

.list-columns li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
}

.list-columns li:hover {
    color: var(--color-accent);
}

/* Lightbox Modal
   ========================================================================== */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
}

.lightbox-caption {
    margin-top: var(--space-lg);
    font-size: var(--text-lg);
    color: #FFFFFF;
}

.lightbox-close {
    position: absolute;
    top: var(--space-xl);
    right: var(--space-xl);
    font-size: 3rem;
    background: none;
    border: none;
    color: #FFFFFF;
    cursor: pointer;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-base);
}

.lightbox-close:hover {
    transform: rotate(90deg);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #FFFFFF;
    transition: background-color var(--transition-base);
}

.lightbox-nav:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.lightbox-prev {
    left: var(--space-xl);
}

.lightbox-next {
    right: var(--space-xl);
}

/* Mobile Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 100%;
        height: 100vh;
        background-color: var(--color-bg);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-3xl) var(--space-lg);
        gap: var(--space-lg);
        transition: right var(--transition-base);
        z-index: var(--z-modal);
        overflow-y: auto;
        /* Allow scrolling if menu is long */
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: var(--text-lg);
    }

    .hero-title {
        font-size: var(--text-4xl);
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .list-columns {
        grid-template-columns: 1fr;
    }

    .lightbox-nav {
        width: 48px;
        height: 48px;
    }

    .lightbox-close {
        top: var(--space-md);
        right: var(--space-md);
        width: 48px;
        height: 48px;
        font-size: 2rem;
    }
}

/* Clients Section (Infinite Slider)
   ========================================================================== */
.clients-slider {
    overflow: hidden;
    padding: var(--space-md) 0;
    position: relative;
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.clients-track {
    display: flex;
    gap: var(--space-3xl);
    /* Space between logos */
    width: max-content;
    animation: client-scroll 40s linear infinite;
    will-change: transform;
}

.clients-track:hover {
    animation-play-state: paused;
}

.client-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 200px;
    /* Adjust based on logo size */
    height: 100px;
    filter: grayscale(100%) opacity(0.7);
    transition: filter var(--transition-base), transform var(--transition-base);
    flex-shrink: 0;
}

.client-logo:hover {
    filter: grayscale(0%) opacity(1);
    transform: scale(1.1);
}

.client-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

@keyframes client-scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(calc(-50% - var(--space-xl)));
        /* Adjust based on track content duplication */
    }
}