/* =============================================
   EDITORIAL SPLIT PORTFOLIO - CSS
   ============================================= */

:root {
    /* Colors - Monochrome + Accent */
    --black: #0A0A0A;
    --gray-900: #1A1A1A;
    --gray-800: #2A2A2A;
    --gray-600: #6B6B6B;
    --gray-400: #9B9B9B;
    --gray-200: #E5E5E5;
    --gray-100: #F5F5F5;
    --white: #FFFFFF;

    /* Accent Color */
    --accent: #D4AF37; /* Sophisticated gold */
    --accent-dark: #B8941F;

    /* Typography */
    --font-serif: 'Libre Baskerville', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Layout */
    --sidebar-width: 320px;
    --content-max: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Effects */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =============================================
   RESET & BASE
   ============================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =============================================
   SIDEBAR
   ============================================= */

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--black);
    color: var(--white);
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg) var(--spacing-md);
    z-index: 100;
}

.sidebar-header {
    margin-bottom: var(--spacing-xl);
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.02em;
}

.tagline {
    font-size: 0.875rem;
    color: var(--gray-400);
    font-weight: 300;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Sidebar Navigation */
.sidebar-nav {
    flex-grow: 1;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: var(--spacing-md);
}

.sidebar-nav a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
    position: relative;
}

.sidebar-nav a::before {
    content: '';
    width: 20px;
    height: 1px;
    background-color: var(--gray-600);
    transition: var(--transition);
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    color: var(--accent);
}

.sidebar-nav a:hover::before,
.sidebar-nav a.active::before {
    width: 40px;
    background-color: var(--accent);
}

/* Sidebar Footer */
.sidebar-footer {
    margin-top: var(--spacing-lg);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.social-link {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
    font-weight: 500;
}

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

.copyright {
    font-size: 0.75rem;
    color: var(--gray-600);
    line-height: 1.5;
}

/* =============================================
   MAIN CONTENT
   ============================================= */

.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

/* =============================================
   SECTIONS
   ============================================= */

.section {
    min-height: 100vh;
    padding: var(--spacing-xl) var(--spacing-lg);
    position: relative;
    display: flex;
    align-items: center;
}

.section-number {
    position: absolute;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--gray-200);
    font-family: var(--font-serif);
}

.section-content {
    width: 100%;
    max-width: var(--content-max);
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--black);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

/* =============================================
   HERO SECTION
   ============================================= */

.hero {
    background-color: var(--gray-100);
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.hero-content {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 600px;
    margin-left: auto;
    padding-right: var(--spacing-lg);
}

.hero-label {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    color: var(--black);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--black);
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: var(--transition);
    border: 2px solid var(--black);
    align-self: flex-start;
}

.cta-button:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    color: var(--black);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.cta-button--ghost {
    background-color: transparent;
    color: var(--black);
}

.hero-image {
    background-color: var(--black);
    position: relative;
    overflow: hidden;
    align-self: stretch;
}

.hero-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
}

/* =============================================
   ABOUT SECTION
   ============================================= */

.about {
    background-color: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
}

.about-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--gray-800);
}

.about-text p {
    margin-bottom: var(--spacing-md);
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.detail-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-400);
}

.detail-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--black);
}

.detail-value a {
    color: var(--black);
    text-decoration: none;
    transition: var(--transition);
}

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

/* =============================================
   EXPERTISE SECTION
   ============================================= */

.expertise {
    background-color: var(--gray-100);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.expertise-item {
    padding: var(--spacing-lg);
    background-color: var(--white);
    border-left: 3px solid var(--black);
    transition: var(--transition);
}

.expertise-item:hover {
    border-left-color: var(--accent);
    transform: translateX(5px);
}

.expertise-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-200);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.expertise-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: var(--spacing-sm);
}

.expertise-description {
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* =============================================
   WORK TIMELINE
   ============================================= */

.work {
    background-color: var(--white);
}

.work-timeline {
    position: relative;
    padding-left: var(--spacing-lg);
}

.work-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--gray-200);
}

.work-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--gray-100);
}

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

.work-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-lg) - 6px);
    top: 0;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--white);
    border: 3px solid var(--accent);
}

.work-period {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.work-position {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.work-company {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.work-logo {
    flex: none;
    width: 44px;
    height: 44px;
    padding: 7px;
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

.work-description {
    font-size: 1rem;
    color: var(--gray-600);
    line-height: 1.8;
}

/* =============================================
   PROJECTS GRID
   ============================================= */

.projects {
    background-color: var(--gray-100);
    min-height: auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.project-item {
    background-color: var(--white);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.project-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.project-image {
    width: 100%;
    aspect-ratio: 3 / 2;
    background-color: var(--black);
    overflow: hidden;
    position: relative;
}

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

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

.project-content {
    padding: var(--spacing-lg);
}

.project-category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.project-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.project-description {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background-color: var(--gray-100);
    color: var(--gray-600);
    font-weight: 500;
}

/* =============================================
   CONTACT SECTION
   ============================================= */

.contact {
    background-color: var(--black);
    color: var(--white);
}

.contact .section-title {
    color: var(--white);
}

.contact .section-number {
    color: var(--gray-800);
}

.contact-message {
    font-size: 1.5rem;
    line-height: 1.6;
    color: var(--gray-400);
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.contact-item {
    padding: var(--spacing-lg);
    border: 1px solid var(--gray-800);
    transition: var(--transition);
}

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

.contact-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
}

.contact-value {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--white);
}

.contact-value a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

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

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 1024px) {
    :root {
        --sidebar-width: 280px;
    }

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

    .hero-image {
        height: 50vh;
    }

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

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

@media (max-width: 768px) {
    /* Sidebar collapses into a compact sticky top bar */
    .sidebar {
        position: sticky;
        top: 0;
        bottom: auto;
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .sidebar-header {
        margin-bottom: var(--spacing-xs);
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        gap: var(--spacing-sm);
    }

    .logo {
        font-size: 1.25rem;
        margin-bottom: 0;
    }

    .tagline {
        font-size: 0.7rem;
    }

    .sidebar-nav ul {
        display: flex;
        gap: var(--spacing-sm);
        overflow-x: auto;
        scrollbar-width: none;
    }

    .sidebar-nav li {
        margin-bottom: 0;
        flex: none;
    }

    .sidebar-nav a {
        font-size: 0.75rem;
        padding: 0.4rem 0;
    }

    .sidebar-nav a::before,
    .sidebar-footer {
        display: none;
    }

    .hero-image {
        height: 60vh;
    }

    .main-content {
        margin-left: 0;
    }

    .section {
        min-height: auto;
        padding: var(--spacing-lg) var(--spacing-md);
        scroll-margin-top: 96px;
    }

    .project-title {
        overflow-wrap: anywhere;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-content {
        padding: var(--spacing-lg) var(--spacing-md);
        margin: 0;
    }

    .work-timeline {
        padding-left: var(--spacing-md);
    }

    .work-item::before {
        left: calc(-1 * var(--spacing-md) - 6px);
    }

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

    .contact-info {
        grid-template-columns: 1fr;
    }
}