/* Reset & Base Styles */
:root {
    --charcoal-black: #1C1C1C;
    --cream-white: #F5F5F0;
    --light-gray: #A0A0A0;
    --medium-gray: #666666;
    --dark-gray: #333333;
    --accent-color: #7B68EE; /* Example accent, can be subtle */

    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-xxl: 120px;

    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;

    --transition-speed: 0.3s;
    --transition-easing: ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--charcoal-black);
    color: var(--cream-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
}

/* Typography */
h1 {
    font-size: 3.8rem;
    font-weight: 700;
    line-height: 1.1;
}

h2 {
    font-size: 2.8rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

h3 {
    font-size: 1.8rem;
    font-weight: 500;
}

p {
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--light-gray);
}

/* Buttons */
.btn {
    display: inline-block;
    background-color: var(--cream-white);
    color: var(--charcoal-black);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 500;
    transition: transform var(--transition-speed) var(--transition-easing), 
                background-color var(--transition-speed) var(--transition-easing),
                box-shadow var(--transition-speed) var(--transition-easing);
}

.btn:hover {
    transform: translateY(-3px) scale(1.02);
    background-color: var(--light-gray);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(28, 28, 28, 0.7); /* Semi-transparent charcoal */
    -webkit-backdrop-filter: blur(10px); /* Safari support */
    backdrop-filter: blur(10px); /* Glass effect */
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: background-color var(--transition-speed) var(--transition-easing),
                padding var(--transition-speed) var(--transition-easing);
}

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

.navbar .logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--cream-white);
}

.navbar ul {
    list-style: none;
    display: flex;
}

.navbar li {
    margin-left: var(--spacing-lg);
}

.navbar a {
    color: var(--cream-white);
    text-decoration: none;
    font-weight: 400;
    position: relative;
    transition: opacity var(--transition-speed) var(--transition-easing),
                color var(--transition-speed) var(--transition-easing);
}

.navbar a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--cream-white);
    transition: width var(--transition-speed) var(--transition-easing);
}

.navbar a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--charcoal-black);
    padding-top: var(--spacing-xxl); /* Account for fixed navbar */
}

.hero-content {
    max-width: 900px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s var(--transition-easing) forwards;
    animation: fadeInUp 1s var(--transition-easing) forwards;
    animation-delay: 0.5s; /* Delay for hero content */
}

.hero-content h1 {
    color: var(--cream-white);
    margin-bottom: var(--spacing-sm);
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-lg);
    color: var(--light-gray);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Projects Section */
.projects {
    background-color: var(--dark-gray);
    padding: var(--spacing-xxl) 0;
}

.projects h2 {
    color: var(--cream-white);
    margin-bottom: var(--spacing-xl);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background-color: var(--charcoal-black);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3); /* Subtle shadow */
    transition: transform var(--transition-speed) var(--transition-easing),
                box-shadow var(--transition-speed) var(--transition-easing);
}

.project-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5); /* Elevate on hover */
}

.project-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    border-bottom: 1px solid rgba(245, 245, 240, 0.1);
    transition: transform 0.6s var(--transition-easing); /* Image zoom effect */
}

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

.project-card-content {
    padding: var(--spacing-md);
    position: relative; /* For potential overlay animations */
    z-index: 1;
}

.project-card h3 {
    color: var(--cream-white);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.project-card p {
    color: var(--light-gray);
    font-size: 1rem;
}

/* About Section */
.about {
    background-color: var(--charcoal-black);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about h2 {
    color: var(--cream-white);
    margin-bottom: var(--spacing-lg);
}

.about p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--light-gray);
}

/* Contact Section */
.contact {
    background-color: var(--dark-gray);
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.contact h2 {
    color: var(--cream-white);
}

.contact-intro {
    margin-bottom: var(--spacing-lg);
    color: var(--light-gray);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto var(--spacing-lg) auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-form input,
.contact-form textarea {
    background-color: var(--charcoal-black);
    border: 1px solid rgba(245, 245, 240, 0.2); /* Subtle border */
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    color: var(--cream-white);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: border-color var(--transition-speed) var(--transition-easing),
                box-shadow var(--transition-speed) var(--transition-easing);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(123, 104, 239, 0.3); /* Focus ring */
    background-color: rgba(123, 104, 239, 0.1); /* Subtle background change on focus */
}

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

.contact .btn {
    align-self: flex-start; /* Align button to the left */
    margin-top: var(--spacing-sm);
}

.email-link {
    margin-top: var(--spacing-md);
}

.email-link a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-easing),
                text-shadow var(--transition-speed) var(--transition-easing);
}

.email-link a:hover {
    color: var(--cream-white);
}

/* Footer */
footer {
    background-color: var(--charcoal-black);
    padding: var(--spacing-md) 0;
    text-align: center;
    border-top: 1px solid var(--dark-gray);
}

footer p {
    font-size: 0.9rem;
    color: var(--medium-gray);
}

/* Responsiveness */
@media (max-width: 768px) {
    h1 {
        font-size: 2.8rem;
    }

    h2 {
        font-size: 2rem;
    }

    .navbar .container {
        flex-direction: column;
    }

    .navbar ul {
        margin-top: var(--spacing-sm);
    }

    .navbar li {
        margin: 0 var(--spacing-sm);
    }

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

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

    .contact-form {
        padding: 0 var(--spacing-md);
    }

    section {
        padding: var(--spacing-lg) 0;
    }
}