/* ==========================================================================
   maexbert.de – Base Styles
   Layout, typography, navigation, footer, hero, about section
   ========================================================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background: var(--bg-primary);
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    flex: 1;
    padding-top: 56px; /* navbar height */
}

a {
    color: var(--text-link);
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--text-link-hover);
}

::selection {
    background: rgba(0, 212, 255, 0.25);
    color: #fff;
}

/* --- Navigation --- */
.navbar {
    background: var(--bg-nav);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-base), box-shadow var(--transition-base);
    z-index: 1030;
    padding: 0.6rem 0;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--text-primary) !important;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.brand-icon {
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-weight: 700;
}

.navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    font-size: var(--font-size-sm);
    padding: 0.5rem 0.85rem !important;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--accent-primary) !important;
}

.nav-social .nav-link {
    font-size: 1.1rem;
    padding: 0.5rem 0.5rem !important;
}

.nav-social .nav-link:hover {
    color: var(--accent-primary) !important;
    transform: translateY(-1px);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    overflow: clip;  /* better iOS clipping, falls back to hidden above */
    margin-top: -56px;
    padding-top: 56px;
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    padding: 2rem 1.5rem;
}

.hero-greeting {
    margin-bottom: 1rem;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.1;
    margin: 0;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 2rem;
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- About Section --- */
.about-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.about-avatar {
    display: inline-block;
}

.avatar-placeholder {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: var(--gradient-subtle);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    overflow: hidden;
    transition: all var(--transition-base);
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder i {
    font-size: 4rem;
    color: var(--text-muted);
}

.avatar-placeholder:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.about-text {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.8;
    margin-bottom: 1rem;
    text-align: justify;
}

.about-text strong {
    color: var(--text-primary);
}

.tech-stack-section {
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
}

.tech-stack-label {
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.tech-stack-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-badge-hero {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.9rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

.tech-badge-hero:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.social-links-hero {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.social-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1.25rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-link-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.05);
}

/* --- Featured / Blog Preview Sections --- */
.featured-section,
.blog-preview-section {
    padding: var(--section-padding) 0;
}

.featured-section {
    background: var(--bg-primary);
}

.blog-preview-section {
    background: var(--bg-secondary);
}

.blog-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.blog-preview-card {
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.blog-preview-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

/* --- Footer --- */
.site-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.footer-tagline {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-top: 0.25rem;
}

.footer-links {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.footer-heading {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.footer-col a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.footer-col a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.footer-bottom p {
    margin: 0;
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

.footer-version {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    font-family: var(--font-mono);
}

/* --- Flash Messages --- */
.flash-messages {
    position: fixed;
    top: 70px;
    right: 20px;
    z-index: 1050;
    max-width: 400px;
}

/* --- Code Copy Button --- */
.code-block-wrapper {
    position: relative;
}

.code-copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.3rem 0.5rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    z-index: 2;
    line-height: 1;
}

.code-copy-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

.code-copy-btn.copied {
    color: var(--accent-success);
    border-color: rgba(16, 185, 129, 0.3);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .container,
    .container-narrow {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .hero-description {
        font-size: var(--font-size-sm);
    }

    .about-section {
        padding: 3rem 0;
    }

    .featured-section,
    .blog-preview-section {
        padding: 3rem 0;
    }

    .footer-inner {
        flex-direction: column;
    }

    .footer-links {
        gap: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .blog-preview-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
}

/* --- Bootstrap Dark Overrides --- */
.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.1);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.15rem rgba(0, 212, 255, 0.25);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--accent-warning);
}

.container {
    max-width: 1200px;
    padding: 0 2.5rem;
}