/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Inspired by Olivia's sophisticated palette */
    --color-primary: #2d3436;
    --color-secondary: #636e72;
    --color-tertiary: #a0a8ac;
    --color-background: #ffffff;
    --color-surface: #f8f9fa;
    --color-border: #e1e5e9;
    --color-accent: #7b8471;
    --color-sage: #8fa68e;
    --color-sage-light: #a8b5a7;
    --color-sage-dark: #6b7c6a;
    --color-cream: #f7f5f3;
    --color-warm-white: #fefcfa;

    /* Typography */
    --font-family-primary: 'Playfair Display', Georgia, serif;
    --font-family-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-script: 'Dancing Script', cursive;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
}

body {
    font-family: var(--font-family-secondary);
    line-height: 1.6;
    color: var(--color-primary);
    background-color: var(--color-warm-white);
    font-size: var(--font-size-base);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-4);
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-6);
}

.nav__logo {
    font-family: var(--font-family-script);
    font-weight: 600;
    font-size: var(--font-size-2xl);
    color: var(--color-sage-dark);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav__logo:hover {
    color: var(--color-sage);
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-8);
}

.nav__link {
    color: var(--color-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.nav__link:hover {
    color: var(--color-primary);
}

/* Main Content */
main {
    margin-top: 80px;
}

/* Hero Section */
.hero {
    padding: var(--spacing-24) 0;
    background-color: var(--color-background);
}

.hero__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

@media (max-width: 768px) {
    .hero__content {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
        text-align: center;
    }

    .hero__image {
        order: -1;
    }
}

.hero__title {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-5xl);
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .hero__title {
        font-size: var(--font-size-3xl);
    }
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-secondary);
    line-height: 1.5;
}

.hero__image {
    position: relative;
}

.hero__img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Featured Projects */
.featured-projects {
    padding: var(--spacing-24) 0;
    background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-sage-light) 100%);
}

.section__title {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-3xl);
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-16);
    color: var(--color-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: var(--spacing-6);
    height: 600px;
}

@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto;
        height: auto;
    }
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

.project-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-4px);
}

.project-card--large {
    grid-row: 1 / 3;
}

@media (max-width: 1024px) {
    .project-card--large {
        grid-row: auto;
    }
}

.project-card__image {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 280px;
}

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

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

.project-card__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: white;
    padding: var(--spacing-6);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

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

.project-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.project-card__tag {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--color-sage-dark) 0%, var(--color-primary) 100%);
    color: white;
    padding: var(--spacing-16) 0;
}

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

@media (max-width: 768px) {
    .footer__content {
        flex-direction: column;
        gap: var(--spacing-4);
    }
}

.footer__links {
    display: flex;
    gap: var(--spacing-8);
}

.footer__link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity var(--transition-fast);
}

.footer__link:hover {
    opacity: 0.8;
}

.footer__text {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
}

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

.mb-4 {
    margin-bottom: var(--spacing-4);
}

.mb-8 {
    margin-bottom: var(--spacing-8);
}

.hidden {
    display: none;
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}