/* ==========================================================================
   STUDIO CASTELLIN - MAIN STYLESHEET
   Premium Lighting Design Consultancy
   ========================================================================== */

/* CSS Reset & Base Styles
   ========================================================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    overflow-x: hidden;
    scroll-padding-top: 120px;
    /* Fix for fixed navbar obscuring anchors */
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
    width: 100%;
}

/* CSS Custom Properties (Design Tokens)
   ========================================================================== */
:root {
    /* Typography */
    --font-heading: 'Cormorant Garamond', serif;
    --font-body: 'Inter', sans-serif;
    --font-ui: 'Outfit', sans-serif;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3rem;
    --text-6xl: 4rem;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;

    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Dark Theme (Default) */
[data-theme="dark"] {
    --color-dark: #0A0A0A;
    --color-burgundy: #6B2C3E;
    --color-gold: #D4AF37;
    --color-cream: #F5F1E8;

    --color-bg: #0F0F0F;
    --color-bg-secondary: #1A1A1A;
    --color-bg-tertiary: #252525;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #A0A0A0;
    --color-text-tertiary: #707070;
    --color-accent: #D4AF37;
    --color-accent-hover: #E5C158;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-overlay: rgba(0, 0, 0, 0.7);
}

/* Light Theme */
[data-theme="light"] {
    --color-dark: #0A0A0A;
    --color-burgundy: #6B2C3E;
    --color-gold: #B8941F;
    --color-cream: #F5F1E8;

    --color-bg: #FAFAFA;
    --color-bg-secondary: #FFFFFF;
    --color-bg-tertiary: #F5F5F5;
    --color-text-primary: #0A0A0A;
    --color-text-secondary: #505050;
    --color-text-tertiary: #808080;
    --color-accent: #B8941F;
    --color-accent-hover: #9A7A1A;
    --color-border: rgba(0, 0, 0, 0.1);
    --color-overlay: rgba(255, 255, 255, 0.9);
}

/* Typography Styles
   ========================================================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--text-6xl);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

p {
    margin-bottom: var(--space-md);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-accent-hover);
}

strong {
    font-weight: 600;
    color: var(--color-accent);
}

em {
    font-style: italic;
    color: var(--color-accent);
}

address {
    font-style: normal;
    line-height: 1.8;
}

/* Layout Components
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-3xl) 0;
    position: relative;
}

.dark-section {
    background-color: var(--color-bg-secondary);
}

.section-label {
    font-family: var(--font-ui);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-md);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--space-xl);
}

/* Grid Layouts
   ========================================================================== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

/* About Section
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.about-content {
    padding-right: var(--space-xl);
}

.about-title {
    font-family: var(--font-ui);
    font-size: var(--text-2xl);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-text-primary);
}

.about-text {
    font-size: var(--text-base);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
    text-align: justify;
}

.about-text strong {
    font-weight: 600;
    color: var(--color-text-primary);
}

.about-text em {
    font-style: italic;
    color: var(--color-text-primary);
    font-weight: 500;
}

.about-quote {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-style: italic;
    color: var(--color-text-secondary);
    margin-top: var(--space-lg);
    text-align: left;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

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

/* Single Column About (fallback) */
.about-single-column {
    max-width: 900px;
    margin: 0 auto;
}

.about-paragraph {
    font-size: var(--text-lg);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
    color: var(--color-text-primary);
}

.about-paragraph strong {
    font-weight: 600;
    color: var(--color-text-primary);
}

.about-paragraph em {
    font-style: italic;
    color: var(--color-text-primary);
    font-weight: 500;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.stat-item {
    text-align: center;
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-base), transform var(--transition-base);
}

.stat-item:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* Services Section
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

@media (min-width: 900px) {
    .services-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    /* All items span 2 columns (1/3 width of container) */
    .services-grid .service-card {
        grid-column: span 2;
    }

    /* Position 1st item (Function) in columns 2-3 (centered left) */
    .services-grid .service-card:nth-child(1) {
        grid-column: 2 / span 2;
    }

    /* Position 2nd item (Atmosphere) in columns 4-5 (centered right) */
    .services-grid .service-card:nth-child(2) {
        grid-column: 4 / span 2;
    }
}

/* Timeline (Design Process)
   ========================================================================== */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-accent) 0%, transparent 100%);
    transform: translateX(-50%);
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    position: relative;
}

.timeline-item:nth-child(even) .timeline-content {
    grid-column: 1;
    text-align: right;
}

.timeline-item:nth-child(odd) .timeline-content {
    grid-column: 3;
    text-align: left;
}

.timeline-number {
    grid-column: 2;
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-accent);
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border: 2px solid var(--color-accent);
    border-radius: 50%;
    position: relative;
    z-index: 2;
}

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

.timeline-description {
    color: var(--color-text-secondary);
    font-size: var(--text-base);
}

/* Knowledge Section
   ========================================================================== */
.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.knowledge-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);
    min-width: 0;
}

.knowledge-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

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

.knowledge-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.knowledge-visual {
    padding: var(--space-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
}

/* CCT Spectrum */
.cct-spectrum {
    padding: var(--space-md);
}

.cct-bar {
    height: 40px;
    background: linear-gradient(90deg,
            #FF6B35 0%,
            #FFB84D 20%,
            #FFF5E6 40%,
            #FFFFFF 50%,
            #E6F2FF 60%,
            #B3D9FF 80%,
            #6BB6FF 100%);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-lg);
}

.cct-markers {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    text-align: center;
}

.cct-markers span {
    flex: 1;
}

/* CRI Comparison */
.cri-comparison {
    display: flex;
    justify-content: space-around;
    gap: var(--space-lg);
}

.cri-item {
    text-align: center;
}

.cri-box {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto var(--space-md);
    border: 3px solid var(--color-border);
}

.cri-70 {
    background: radial-gradient(circle, #8B4444 0%, #5C2E2E 100%);
}

.cri-100 {
    background: radial-gradient(circle, #DC143C 0%, #A00000 100%);
}

.cri-item span {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* Illuminance Diagram */
.illuminance-diagram {
    display: flex;
    justify-content: space-around;
    gap: var(--space-lg);
}

.diagram-item {
    text-align: center;
}

.diagram-item svg {
    margin-bottom: var(--space-md);
    color: var(--color-accent);
}

.diagram-item span {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    display: block;
}

/* Team Section
   ========================================================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.team-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.team-card-interactive {
    cursor: pointer;
}

.team-card-interactive:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-color: var(--color-accent);
}

.team-image {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-lg);
    position: relative;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--color-accent);
}

.team-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-info {
    text-align: center;
}

.team-name {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    margin-bottom: var(--space-xxs);
    color: var(--color-accent);
}

.team-role {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    margin-bottom: 0;
    letter-spacing: 0.05em;
}

/* Team Detail Tab Styles */
.team-detail-wrapper {
    margin-top: var(--space-2xl);
    scroll-margin-top: 100px;
}

.team-detail-content {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    animation: fadeIn 0.5s ease-out;
    position: relative;
    overflow: hidden;
}

.team-detail-content.hidden {
    display: none;
}

.team-detail-flex {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.team-detail-image {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-accent);
}

.team-detail-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-md);
}

.team-detail-name {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    margin-bottom: var(--space-xs);
    color: var(--color-accent);
}

.team-detail-role {
    font-family: var(--font-ui);
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.team-detail-close {
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 2rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.3s ease;
    flex-shrink: 0;
}

.team-detail-close:hover {
    background-color: var(--color-bg);
    color: var(--color-accent);
}

.team-detail-bio {
    font-size: var(--text-base);
    line-height: 1.8;
    color: var(--color-text-description);
    text-align: justify;
}

.team-detail-bio p {
    margin-bottom: var(--space-md);
}

/* Active State for Card */
.team-card.active {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent), 0 20px 40px rgba(0, 0, 0, 0.2);
    transform: translateY(-5px);
}

.team-card.active .team-image {
    border-width: 4px;
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
}

@media (max-width: 768px) {
    .team-detail-flex {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .team-detail-image-wrapper {
        max-width: 200px;
        margin: 0 auto;
    }

    .team-detail-header-row {
        flex-direction: column-reverse;
        align-items: center;
        text-align: center;
        gap: var(--space-md);
    }

    .team-detail-close {
        align-self: flex-end;
        position: absolute;
        top: var(--space-md);
        right: var(--space-md);
    }
}

.team-bio {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Values Section
   ========================================================================== */
.values-grid {
    display: grid;
    /* Mobile: 1 column */
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 1024px) {
    .values-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    /* First 2 items span 3 columns each (2 items per row) */
    .value-card:nth-child(1),
    .value-card:nth-child(2) {
        grid-column: span 3;
    }

    /* Last 3 items span 2 columns each (3 items per row) */
    .value-card:nth-child(3),
    .value-card:nth-child(4),
    .value-card:nth-child(5) {
        grid-column: span 2;
    }
}

.value-card {
    text-align: center;
    padding: var(--space-xl);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-base), transform var(--transition-base);
}

.value-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

.value-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-accent);
    border-radius: 50%;
    color: var(--color-accent);
    transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

.value-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Contact Section
   ========================================================================== */
/* New 3-Part Contact Layout */
.contact-new-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: stretch;
}

.contact-left-column {
    display: grid;
    grid-template-rows: auto 1fr;
    gap: var(--space-xl);
}

.contact-info-top {
    display: flex;
    flex-direction: column;
}

.contact-details-row {
    display: flex;
    gap: var(--space-xl);
    flex-wrap: wrap;
    margin-top: var(--space-md);
}

.contact-details {
    margin-bottom: 0;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.contact-item svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--color-accent);
}

.contact-item a {
    color: var(--color-text-primary);
    transition: color var(--transition-base);
}

.contact-item a:hover {
    color: var(--color-accent);
}

.contact-map-left {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    min-height: 350px;
}

.contact-map-left iframe {
    display: block;
}

/* Legacy contact grid styles (keeping for backwards compatibility) */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
    margin-bottom: var(--space-3xl);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-links a {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    transition: border-color var(--transition-base), background-color var(--transition-base);
}

.social-links a:hover {
    border-color: var(--color-accent);
    background-color: var(--color-accent);
}

.social-links a:hover svg {
    color: var(--color-bg);
}

/* Contact Form */
.contact-form-container {
    background: var(--color-bg-secondary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.contact-form {
    width: 100%;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.form-group .required {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    font-weight: normal;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-help {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

.submit-btn {
    display: block;
    margin: 0 auto var(--space-xl);
    padding: var(--space-sm) var(--space-2xl);
    background-color: transparent;
    border: 1px solid var(--color-text-primary);
    border-radius: 50px;
    color: var(--color-text-primary);
    font-family: var(--font-ui);
    font-size: var(--text-sm);
    font-weight: 400;
    cursor: pointer;
    transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

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

.form-footer {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-align: center;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.form-footer a {
    color: var(--color-text-primary);
    text-decoration: underline;
}

.form-footer a:hover {
    color: var(--color-accent);
}

.email-direct-btn {
    display: block;
    width: 60px;
    height: 60px;
    margin: 0 auto;
    background-color: transparent;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    transition: border-color var(--transition-base), background-color var(--transition-base);
}

.email-direct-btn:hover {
    border-color: var(--color-accent);
    background-color: var(--color-accent);
    color: var(--color-bg);
}

/* Map Section */
.map-section {
    margin-top: var(--space-3xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.map-section iframe {
    width: 100%;
    display: block;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form-container {
        padding: var(--space-md);
    }
}

/* Timeline List */
.timeline-list {
    list-style-type: disc;
    padding-left: var(--space-lg);
    color: var(--color-text-secondary);
    font-size: var(--text-base);
    line-height: 1.6;
    margin-top: var(--space-sm);
    text-align: left;
}

.timeline-list li {
    margin-bottom: var(--space-xs);
}

/* Footer
   ========================================================================== */
.footer {
    background-color: var(--color-bg-secondary);
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    text-align: center;
}

.footer-logo {
    font-family: var(--font-ui);
    font-size: var(--text-2xl);
    letter-spacing: 0.05em;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.footer-tagline {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.footer-copyright {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
}

/* Responsive Design
   ========================================================================== */
@media (max-width: 1199px) {
    :root {
        --text-6xl: 3rem;
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
    }

    .timeline-item {
        grid-template-columns: auto 1fr;
        gap: var(--space-lg);
    }

    .timeline::before {
        left: 40px;
    }

    .timeline-number {
        width: 60px;
        height: 60px;
        font-size: var(--text-2xl);
    }

    .timeline-item:nth-child(even) .timeline-content,
    .timeline-item:nth-child(odd) .timeline-content {
        grid-column: 2;
        text-align: left;
    }
}

@media (max-width: 768px) {
    :root {
        --text-6xl: 2.5rem;
        --text-5xl: 2rem;
        --text-4xl: 1.75rem;
        --text-3xl: 1.5rem;
        --space-3xl: 4rem;
        --space-2xl: 3rem;
    }

    .container {
        padding: 0 var(--space-md);
    }

    .section {
        padding: var(--space-2xl) 0;
    }

    .about-grid,
    .contact-grid,
    .contact-new-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .about-content {
        padding-right: 0;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .services-grid,
    .knowledge-grid,
    .team-grid,
    .values-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .knowledge-card {
        padding: var(--space-md);
    }

    .timeline-number {
        width: 50px;
        height: 50px;
        font-size: var(--text-lg);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Image Loading & Optimization
   ========================================================================== */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

img[loading="lazy"] {
    opacity: 0;
    transition: opacity var(--transition-slow);
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Utility Classes
   ========================================================================== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mb-sm {
    margin-bottom: var(--space-sm);
}

.mb-md {
    margin-bottom: var(--space-md);
}

.mb-lg {
    margin-bottom: var(--space-lg);
}

.mb-xl {
    margin-bottom: var(--space-xl);
}

.mt-sm {
    margin-top: var(--space-sm);
}

.mt-md {
    margin-top: var(--space-md);
}

.mt-lg {
    margin-top: var(--space-lg);
}

.mt-xl {
    margin-top: var(--space-xl);
}

/* Common Lighting Issues Section
   ========================================================================== */
.issues-section {
    padding-bottom: var(--space-xl);
}

.accordion {
    max-width: 100%;
    /* Full width as requested */
    margin: 0 auto;
    border-top: 1px solid var(--color-border);
}

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

.accordion-header {
    width: 100%;
    padding: var(--space-md) var(--space-xs);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: color var(--transition-base);
}

.accordion-header span {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 500;
    color: var(--color-text-primary);
    padding-right: var(--space-md);
}

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

.accordion-content {
    max-height: 0;
    overflow: hidden;
    padding: 0 var(--space-xs);
    transition: max-height 0.4s ease-out, padding 0.4s ease;
    opacity: 0;
}

/* Active State */
.accordion-item.active {
    background-color: var(--color-bg-secondary);
}

.accordion-item.active .accordion-header span {
    color: var(--color-accent);
}

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

.accordion-item.active .accordion-content {
    max-height: 500px;
    padding-bottom: var(--space-lg);
    opacity: 1;
}

.accordion-content p {
    margin-bottom: var(--space-sm);
    color: var(--color-text-description);
    line-height: 1.6;
}

.accordion-content strong {
    color: var(--color-text-primary);
}

/* Response for smaller screens */
@media (max-width: 1200px) {
    .issues-row {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

@media (max-width: 576px) {
    .issues-row {
        grid-template-columns: 1fr;
    }

    .issue-title {
        min-height: auto;
    }
}