/* Layout & Responsive Structure */

body {
    background-color: var(--color-bg);
    background-image: var(--bg-gradient, none);
}

/* Container */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

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

@media (min-width: 768px) {
    section {
        padding: var(--spacing-xl) 0;
    }
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.main-nav {
    padding: var(--spacing-sm) 0;
    position: relative;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

@media (min-width: 768px) {
    .nav-container {
        padding: 0 var(--spacing-md);
    }
}

/* Logo */
.logo {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    font-weight: 600;
    letter-spacing: 0.02em;
    line-height: 1;
}

/* Navigation Links */
.nav-links {
    display: none;
    gap: var(--spacing-xs);
    align-items: center;
    margin-bottom: 0;
}

.nav-links li {
    margin-bottom: 0;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-links a {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
    font-size: var(--text-sm);
    line-height: 1;
}

.nav-links a:hover {
    background-color: var(--color-hover);
    color: var(--color-text);
}

.nav-links a.active {
    color: var(--color-text);
    background-color: var(--color-hover);
}

/* Nav Actions (theme toggle + hamburger) */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition:
        transform var(--transition-base),
        opacity var(--transition-base);
}

/* Mobile Navigation */
@media (max-width: 767px) {
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100%;
        background-color: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-xs) 0;
        gap: 0;
        box-shadow: var(--shadow-md);
    }

    .nav-links.active li {
        margin-bottom: 0;
        width: 100%;
    }

    .nav-links.active a {
        display: block;
        padding: 0.75rem var(--spacing-sm);
        font-size: var(--text-sm);
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links.active li:last-child a {
        border-bottom: none;
    }

    .nav-links.active a:hover,
    .nav-links.active a:active {
        background-color: var(--color-hover);
    }
}

/* Hero Section */
.hero {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

@media (min-width: 768px) {
    .hero {
        padding: var(--spacing-xxl) 0;
    }
}

.hero .container {
    max-width: var(--content-width);
}

.tagline {
    font-size: var(--text-xl);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: var(--text-md);
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* About Section */
.about-content {
    max-width: var(--content-width);
}

.about-text p {
    font-size: var(--text-md);
    margin-bottom: var(--spacing-md);
}

/* Projects Grid */
.project-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .project-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

@media (min-width: 768px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Contact Section */
.contact {
    text-align: center;
}

.contact .container {
    /*max-width: var(--content-width);*/
    max-width: 85%;
}

.contact-intro {
    font-size: var(--text-md);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    text-align: center;
}

.site-footer p {
    color: var(--color-text-light);
    font-size: var(--text-xs);
    max-width: 100%;
}