/* CSS DESIGN SYSTEM - Mediterranean + Scandinavian Minimalism */
:root {
    /* Color Palette */
    --clr-bg-primary: #F7F5F0;
    /* Ivory/Off-white */
    --clr-bg-secondary: #EBE7E0;
    /* Slightly darker stone/beige for contrast */
    --clr-text-primary: #331C0F;
    /* Charcoal/Dark stone */
    --clr-text-secondary: #331C0F;
    /* Muted stone */
    --clr-accent-walnut: #331C0F;
    /* Walnut brown */
    --clr-accent-brass: #331C0F;
    /* Brushed brass tone */
    --clr-accent-burgundy: #331C0F;
    /* Soft burgundy */

    /* Typography */
    --font-heading: 'Acumin Variable Concept', 'Acumin Pro', sans-serif;
    --font-body: 'Acumin Variable Concept', 'Acumin Pro', sans-serif;

    /* Spacing & Layout */
    --spacing-sm: 1rem;
    --spacing-md: 2.5rem;
    --spacing-lg: 5rem;
    --spacing-xl: 8rem;
    --max-width: 1200px;
}

/* Reset & Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 300;
    /* Light for body text */
    background-color: var(--clr-bg-primary);
    color: var(--clr-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Typography Overrides */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    /* Medium for headings */
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Layout Utilities */
.section {
    padding: var(--spacing-xl) 2rem;
}

.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.bg-light {
    background-color: var(--clr-bg-secondary);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 1px;
    background-color: var(--clr-accent-brass);
}

.section-title-center {
    text-align: center;
    display: block;
    margin-bottom: var(--spacing-lg);
}

.section-title-center::after {
    left: 50%;
    transform: translateX(-50%);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 2rem;
    background-color: rgba(247, 245, 240, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
    transition: transform 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 101;
}

.mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--clr-bg-primary);
    padding: 2rem;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    flex-direction: column;
    gap: 1.5rem;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    pointer-events: none;
    z-index: 99;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.mobile-nav.active {
    display: flex;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.mobile-nav a {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 300;
}

.logo {
    font-family: var(--font-body);
    font-size: 1.5rem;
    font-weight: 100 !important;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center; /* Ensure alignment with logo */
}

/* Nav Dropdown Logic */
.nav-item-dropdown {
    position: relative;
    padding-bottom: 0.5rem; /* Better hover area */
    margin-bottom: -0.5rem;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    transform: translateY(10px);
    background-color: transparent;
    padding: 0.5rem 0 0.8rem 0;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 1000;
}

.nav-item-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    font-size: 0.7rem !important;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 0.6rem 0;
    white-space: nowrap;
    color: var(--clr-text-secondary);
    opacity: 0.7;
    transition: opacity 0.3s ease, padding-left 0.3s ease;
}

.dropdown-menu a::after {
    display: none !important; /* Remove individual underlines in dropdown */
}

.dropdown-menu a:hover {
    color: var(--clr-text-primary) !important;
    opacity: 1;
    padding-left: 2px;
}

.nav-links a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--clr-text-primary);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 8rem;
    /* Account for navbar */
    text-align: center;
}

/* Background Slider Additions */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 2s ease-in-out;
}

.slide.slide-active {
    opacity: 1;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 20, 15, 0.45);
    /* warm architectural tint for text contrast */
    pointer-events: none;
}

#slider-prev:hover,
#slider-next:hover {
    opacity: 1 !important;
    transform: scale(1.1);
}

.hero-content {
    max-width: 800px;
    z-index: 2;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-family: 'Inter', sans-serif !important;
    font-weight: 100 !important;
    /* Forces the browser to use the ultra-thin Inter cut */
    font-style: italic;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    -webkit-font-smoothing: antialiased;
    /* Additional crispness */
}

.hero-subtitle {
    font-size: clamp(0.9rem, 1.5vw, 1.2rem);
    font-family: 'Inter', sans-serif !important;
    font-weight: 100 !important;
    /* ultra-thin */
    letter-spacing: 2px;
    color: var(--clr-accent-walnut);
    margin-bottom: 2rem;
    -webkit-font-smoothing: antialiased;
}

.hero-tagline {
    font-size: 1.1rem;
    color: var(--clr-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-outline {
    border: 1px solid var(--clr-text-primary);
    color: var(--clr-text-primary);
}

.btn-outline:hover {
    background-color: var(--clr-text-primary);
    color: var(--clr-bg-primary);
}

/* About Section - Minimal Editorial */
.about-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 6rem;
    align-items: start;
    max-width: 1000px;
    margin: 0 auto;
}

.about-text {
    max-width: 480px;
    margin-top: 0;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    font-weight: 300;
    line-height: 1.8;
    color: var(--clr-text-secondary);
}

.about-image-container {
    padding: 0;
}

.about-image {
    width: 100%;
    max-width: 320px;
    height: auto;
    display: block;
    margin-left: auto;
    filter: grayscale(20%) contrast(95%);
    transition: filter 0.5s ease;
}

.about-image:hover {
    filter: grayscale(0%) contrast(100%);
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    transition: opacity 0.3s ease;
}

/* Pre-emptive hide during filtering to prevent flicker */
[data-filtering="true"] .projects-grid {
    opacity: 0;
}

[data-filtering="true"] .project-link {
    display: none !important;
}

[data-filtering="true"] .project-link.visible {
    display: block !important;
}

.project-card {
    cursor: pointer;
    display: block;
}

.project-image-wrapper {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    margin-bottom: 1.5rem;
    background-color: #e0dcd3;
    /* placeholder color */
}

/* Project Images & Placeholders */
.placeholder-image,
.project-image {
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.project-image {
    object-fit: cover;
    display: block;
}

.placeholder-image {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9A958A;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    background: linear-gradient(45deg, #e0dcd3, #eae7df);
}

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

.project-title {
    font-size: 1.4rem;
    margin-bottom: 0.3rem;
    transition: color 0.3s ease;
}

.project-card:hover .project-title {
    color: var(--clr-accent-walnut);
}

.project-category {
    font-size: 0.85rem;
    color: var(--clr-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Project Filtration Classes */
.projects-grid .project-link {
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: block;
}

.projects-grid .project-link.hidden {
    opacity: 0;
    transform: translateY(30px);
    visibility: hidden;
    position: absolute; /* Remove from flow to avoid gaps */
    pointer-events: none;
}

.projects-grid .project-link.visible {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    position: relative;
    pointer-events: auto;
    animation: fadeInReveal 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes fadeInReveal {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Experience Timeline */
.timeline {
    border-left: 1px solid var(--clr-accent-brass);
    padding-left: 2rem;
}

.timeline-item {
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.35rem;
    /* center on the border */
    top: 5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--clr-bg-primary);
    border: 2px solid var(--clr-accent-brass);
}

.timeline-title {
    font-size: 1.5rem;
    margin-bottom: 0.2rem;
}

.timeline-meta {
    font-size: 0.9rem;
    color: var(--clr-accent-walnut);
    margin-bottom: 1rem;
    font-weight: 500;
}

.timeline-desc {
    color: var(--clr-text-secondary);
}

/* Skills & Interests */
.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.skills-list {
    list-style: none;
}

.skills-list li {
    font-size: 1.1rem;
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
}

.skills-list li::before {
    content: '—';
    margin-right: 1rem;
    color: var(--clr-accent-brass);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.tag {
    padding: 0.5rem 1rem;
    background-color: transparent;
    border: 1px solid var(--clr-text-secondary);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--clr-text-secondary);
}

.interest-item {
    margin-bottom: 2rem;
}

.interest-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.interest-desc {
    color: var(--clr-text-secondary);
    font-size: 0.95rem;
}

/* Contact */
.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-desc {
    font-size: 1.2rem;
    color: var(--clr-text-secondary);
    margin-bottom: 2rem;
}

.contact-email {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 4vw, 3rem);
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.contact-email::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--clr-text-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s ease;
}

.contact-email:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Footer */
.footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 0.85rem;
    color: var(--clr-text-secondary);
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .nav-links {
        display: flex; /* Changed from none to show toggle */
        flex: 1;
        justify-content: flex-end;
    }

    .nav-links > a {
        display: none; /* Only hide direct top-level links */
    }

    .logo {
        cursor: pointer;
    }

    .lang-toggle {
        margin-left: 0 !important;
        border-left: none !important;
        padding-left: 0 !important;
        display: inline-flex !important; /* Ensure visibility */
    }

    .lang-toggle a, 
    .lang-toggle span {
        font-weight: 200 !important;
        font-size: 0.75rem !important;
        letter-spacing: 1px !important;
    }

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

    .about-image-container::before {
        display: none;
    }

    .about-image-container {
        padding-left: 0;
    }

    .section {
        padding: var(--spacing-lg) 1.5rem;
    }
}

/* Animations (Intersection Observer) */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Contact Form Styles */
.contact-form {
    max-width: 500px;
    margin: 4rem auto 0;
    text-align: left;
}

.form-group {
    margin-bottom: 2rem;
    position: relative;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    color: var(--clr-text-secondary);
    opacity: 0.7;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 1rem 0;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--clr-text-primary);
    transition: border-color 0.3s ease;
    outline: none;
    border-radius: 0; /* Reset for iOS */
}

.form-input:focus,
.form-textarea:focus {
    border-bottom-color: var(--clr-text-primary);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.btn-submit {
    width: 100%;
    margin-top: 1rem;
    background-color: transparent;
    border: 1px solid var(--clr-text-primary);
    color: var(--clr-text-primary);
    padding: 1rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 0; /* Match design system */
}

.btn-submit:hover {
    background-color: var(--clr-text-primary);
    color: var(--clr-bg-primary);
}