:root {
    --primary-color: #E63946;
    --primary-hover-color: #D92B3A;
    --background-dark: #121212;
    --surface-dark: #1A1A1A;
    --border-dark: #333333;
    --text-primary-dark: #E0E0E0;
    --text-secondary-dark: #888888;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--background-dark);
    color: var(--text-primary-dark);
    line-height: 1.6;
    font-size: 16px;
}

.dark {
    --bg-color: var(--background-dark);
    --surface-color: var(--surface-dark);
    --border-color: var(--border-dark);
    --text-color: var(--text-primary-dark);
    --text-muted-color: var(--text-secondary-dark);
}

.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    line-height: 1.2;
    margin-bottom: 1rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-hover-color);
}

.main-header {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-color);
}

.nav-brand:hover {
    color: var(--text-color);
}

.logo-icon {
    width: 1.5rem;
    height: 1.5rem;
    background-color: var(--primary-color);
    -webkit-mask-image: url('logo.svg');
    mask-image: url('logo.svg');
    -webkit-mask-size: contain;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
}

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

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
    transition: color 0.2s ease-in-out;
}

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

.nav-link.active {
    color: var(--primary-color);
    font-weight: 700;
}

.nav-link.disabled {
    color: var(--text-muted-color);
    cursor: not-allowed;
}

main {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 20px;
}

main > * {
    opacity: 0;
}

.hero-title, .projects-title, .contact-title {
    background: linear-gradient(to bottom right, var(--text-primary-dark) 0%, var(--primary-color) 35%, var(--primary-hover-color) 85%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -2px;
}

.hero-subtitle {
    color: var(--text-muted-color);
    font-size: 1.25rem;
}

.site-footer {
    margin-top: auto;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
}

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

.footer-content p {
    margin: 0;
    color: var(--text-muted-color);
    font-size: 0.9rem;
}

.footer-social-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.footer-social-links a {
    color: var(--text-muted-color);
    font-size: 1.25rem;
    transition: color 0.3s ease, transform 0.3s ease;
}

.footer-social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.button-primary, .button-secondary {
    border: none;
    border-radius: 0.5rem;
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.button-primary {
    background-color: var(--primary-color);
    color: #fff;
}
.button-primary:hover {
    background-color: var(--primary-hover-color);
    transform: scale(1.05);
    color: #fff;
}
.button-secondary {
    background-color: transparent;
    border: 1px solid var(--border-dark);
    color: var(--text-primary-dark);
}
.button-secondary:hover {
    background-color: var(--border-dark);
    color: var(--primary-color);
    transform: scale(1.05);
}

.contact-section {
    width: 100%;
}
.contact-header {
    text-align: center;
    margin-bottom: 3rem;
}
.contact-title {
    font-size: 3.75rem;
    font-weight: 900;
}
.contact-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary-dark);
    max-width: 500px;
    margin: 1rem auto 0;
}
.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: left;
}
@media (min-width: 1024px) {
    .contact-content {
        grid-template-columns: 2fr 1fr;
    }
}
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}
@media (min-width: 640px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
}
.form-group input,
.form-group textarea {
    background-color: var(--surface-dark);
    border: 1px solid var(--border-dark);
    color: var(--text-primary-dark);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.2);
}
.form-group textarea {
    min-height: 140px;
    resize: vertical;
}
.contact-form .button-primary {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}
.social-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.social-sidebar h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary-dark);
}
.social-sidebar a {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary-dark);
    font-weight: 500;
}
.social-sidebar a:hover {
    color: var(--primary-color);
}
.social-sidebar a .material-symbols-outlined,
.social-sidebar a .fab {
    font-size: 1.75rem;
}

.projects-section {
    width: 100%;
    text-align: center;
}
.projects-header {
    margin-bottom: 3rem;
}
.projects-title {
    font-size: 3.75rem;
    font-weight: 900;
}
.projects-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary-dark);
    max-width: 500px;
    margin: 1rem auto 0;
}
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    text-align: left;
}
.project-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-dark);
    border-radius: 0.75rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}
.project-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-bottom: 1px solid var(--border-dark);
}
.project-card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.project-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary-dark);
    margin-bottom: 0.5rem;
}
.project-card-description {
    color: var(--text-secondary-dark);
    flex-grow: 1;
    margin-bottom: 1.5rem;
}
.project-card-buttons {
    display: flex;
    gap: 1rem;
    margin-top: auto;
}

@media (max-width: 768px) {
    .hero-title { font-size: 3rem; }
    .contact-title { font-size: 2.5rem; }
    .projects-title { font-size: 2.5rem; }
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    .footer-content {
        flex-direction: column;
        gap: 1rem;
    }
}

.nav-links {
    position: relative;
    padding-bottom: 5px;
}

.nav-underline {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: left 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), width 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.status-messages {
    margin-top: 1rem;
}

.message {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-weight: 500;
}

.message.success {
    background-color: rgba(46, 204, 113, 0.15);
    color: #2ECC71;
}

.message.error {
    background-color: rgba(255, 71, 71, 0.15);
    color: #FF4747;
}

.message p {
    margin: 0;
}