/* 
   ==========================================================================
   Variables & Theme Defaults (Earthy Tones)
   ========================================================================== */
:root {
    /* Color Palette - Techno-Elegant */
    --color-bg: #0A0A0B;
    /* Deepest black */
    --color-surface: #121214;
    /* Slightly lighter */
    --color-border: #2C2C2E;
    /* Technical separator lines */
    --color-text-main: #FFFFFF;
    /* White */
    --color-text-muted: #8E8E93;
    /* Tech gray */
    --color-accent: #0A84FF;
    /* Electric Blue */
    --color-accent-hover: #0066CC;

    /* Typography */
    --font-primary: 'Outfit', sans-serif;
    --font-secondary: 'Roboto Mono', monospace;
    /* For technical headers/numbers */

    /* Spacing & Sizes */
    --container-width: 1200px;
    --section-padding: 8rem 0;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    background-image:
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 50px 50px;
    color: var(--color-text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: var(--section-padding);
}

/* Typography Elements */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 400;
    line-height: 1.1;
}

h1,
h2 {
    font-family: var(--font-secondary);
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 3rem;
    color: var(--color-text-main);
}

.section-kicker {
    display: block;
    font-family: var(--font-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.8rem;
    color: var(--color-accent);
    margin-bottom: 1rem;
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 2px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: var(--transition-fast);
    cursor: pointer;
    font-weight: 500;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #fff;
    border: 1px solid var(--color-accent);
}

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

/* 
   ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition-fast);
}

.header.scrolled {
    background-color: rgba(10, 10, 11, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-text-main);
    z-index: 1001;
    /* Above mobile menu */
}

/* Special logo color handling on un-scrolled transparent header (if overlaying dark image) */
.hero-content .logo {
    color: #fff;
}

.nav-list {
    display: flex;
    gap: 3rem;
}

.nav-link {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    padding-bottom: 0.25rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-fast);
}

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.mobile-toggle span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-main);
    transition: var(--transition-fast);
}

.mobile-toggle span:nth-child(1) {
    top: 0;
}

.mobile-toggle span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.mobile-toggle span:nth-child(3) {
    bottom: 0;
}

/* 
   ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    color: #fff;
    /* Ensure text is visible over image */
}

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

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.05);
    /* Slight scale for potential parallax/load animation */
    animation: slowZoom 20s infinite alternate linear;
}

@keyframes slowZoom {
    0% {
        transform: scale(1);
    }

    100% {
        transform: scale(1.1);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(10, 10, 11, 0.9) 0%, rgba(10, 10, 11, 0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-title {
    font-size: clamp(3.5rem, 8vw, 6rem);
    margin-bottom: 1.5rem;
    color: #fff;
    line-height: 1.05;
}

.hero-title em {
    font-style: normal;
    font-family: var(--font-secondary);
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    font-weight: 300;
    margin-bottom: 3rem;
    max-width: 600px;
    color: rgba(255, 255, 255, 0.9);
}

/* 
   ==========================================================================
   Projects Section
   ========================================================================== */
.projects {
    background-color: var(--color-bg);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 4rem 2rem;
}

.project-card {
    grid-column: span 12;
}

@media (min-width: 768px) {

    /* Masonry-like asymmetrical layout */
    .project-card:nth-child(even) {
        grid-column: 2 / span 10;
        margin-top: 4rem;
        /* offset */
    }

    .project-card:nth-child(odd) {
        grid-column: 1 / span 9;
    }

    /* Third item adjustment */
    .project-card:nth-child(3) {
        grid-column: 3 / span 10;
    }
}

@media (min-width: 1024px) {
    .project-card:nth-child(odd) {
        grid-column: 1 / span 8;
    }

    .project-card:nth-child(even) {
        grid-column: 4 / span 8;
    }
}

.project-link {
    display: block;
}

.project-image-wrapper {
    overflow: hidden;
    margin-bottom: 1.5rem;
    aspect-ratio: 16/10;
}

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

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

.project-name {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    transition: color var(--transition-fast);
}

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

.project-category {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* 
   ==========================================================================
   Expertise Section
   ========================================================================== */
.expertise {
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.expertise-card {
    background-color: var(--color-surface);
    padding: 2.5rem 2rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.expertise-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px rgba(10, 132, 255, 0.1);
}

.expertise-card:hover::before {
    transform: scaleX(1);
}

.expertise-icon {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.expertise-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.expertise-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

/* 
   ==========================================================================
   About Section
   ========================================================================== */
.about {
    background-color: var(--color-surface);
}

.about-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}

@media (min-width: 900px) {
    .about-container {
        grid-template-columns: 1fr 1fr;
        gap: 6rem;
    }
}

.about-text {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    color: var(--color-text-muted);
}

.stats {
    display: flex;
    gap: 3rem;
    border-top: 1px solid var(--color-border);
    padding-top: 2rem;
}

.stat-number {
    display: block;
    font-family: var(--font-secondary);
    font-size: 3rem;
    color: var(--color-text-main);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.about-image {
    aspect-ratio: 4/5;
    overflow: hidden;
}

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

/* 
   ==========================================================================
   Contact Section
   ========================================================================== */
.contact {
    text-align: center;
    background-color: var(--color-surface);
    color: var(--color-text-main);
    border-top: 1px solid var(--color-border);
}

.contact .section-title {
    color: var(--color-text-main);
    margin-bottom: 1rem;
}

.contact-header p {
    color: var(--color-text-muted);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.contact-email {
    font-family: var(--font-secondary);
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--color-accent);
    position: relative;
    display: inline-block;
}

.contact-email::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transition: height var(--transition-fast);
}

.contact-email:hover::after {
    height: 10%;
    /* Small underline hover effect */
    opacity: 0.5;
}

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

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .footer-container {
        flex-direction: row;
        justify-content: space-between;
    }
}

.copyright {
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 2rem;
}

.social-links a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color var(--transition-fast);
}

.social-links a:hover {
    color: #fff;
}

/* 
   ==========================================================================
   Animations & Interactivity
   ========================================================================== */

/* Initially hidden elements for JS Reveal */
.reveal-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal-up.active {
    opacity: 1;
    transform: translateY(0);
}

/* CSS-only Entrance Animations for Hero */
.animate-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s ease-out forwards;
}

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

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

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

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

/* 
   ==========================================================================
   Mobile Navigation Menu
   ========================================================================== */
@media (max-width: 767px) {
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--color-bg);
        display: flex;
        justify-content: center;
        align-items: center;
        transition: right var(--transition-slow);
        z-index: 1000;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }

    .nav.nav-open {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .nav-link {
        font-size: 1.5rem;
        color: var(--color-text-main);
    }

    .mobile-toggle {
        display: block;
    }

    .header.nav-open-header .mobile-toggle span {
        background-color: var(--color-text-main);
    }

    /* Hamburger to X */
    .mobile-toggle.active span:nth-child(1) {
        top: 50%;
        transform: translateY(-50%) rotate(45deg);
    }

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

    .mobile-toggle.active span:nth-child(3) {
        bottom: 50%;
        transform: translateY(50%) rotate(-45deg);
    }
}