/* ZethalMC — single-page portfolio */

:root {
    --bg: #0a1516;
    --surface: #0f2224;
    --surface-alt: #142e30;
    --border: #1e3d3f;
    --text: #e6f1f0;
    --text-muted: #8fa8a7;
    --accent: #0a4d4a;
    --accent-bright: #17a398;
    --max-width: 1100px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Segoe UI", Helvetica, Arial, sans-serif;
    line-height: 1.6;
}

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

a {
    color: var(--accent-bright);
    text-decoration: none;
}

a:hover {
    color: #fff;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 30px;
}

section {
    scroll-margin-top: 80px;
}

/* Header */

#site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(20, 23, 26, 0.92);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--border);
}

#site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

#logo {
    font-size: 1.4em;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.02em;
}

#logo:hover {
    color: var(--accent-bright);
}

#nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 1.4em;
    width: 42px;
    height: 42px;
    cursor: pointer;
}

#nav {
    display: flex;
    gap: 34px;
}

#nav a {
    color: var(--text-muted);
    font-weight: 500;
    padding: 6px 2px;
    border-bottom: 2px solid transparent;
}

#nav a:hover,
#nav a.active {
    color: var(--text);
    border-bottom-color: var(--accent);
}

/* Hero */

#hero {
    padding: 90px 0 70px 0;
    border-bottom: 1px solid var(--border);
    background: radial-gradient(circle at 80% 20%, rgba(23, 163, 152, 0.14), transparent 55%);
}

#hero .container {
    display: flex;
    align-items: center;
    gap: 60px;
}

#hero .hero-text {
    flex: 1.2;
}

#hero .hero-portrait {
    flex: 1;
    display: flex;
    justify-content: center;
}

#hero .hero-portrait img {
    width: 260px;
    height: 260px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--surface-alt);
    box-shadow: 0 0 0 1px var(--border), 0 20px 40px rgba(0, 0, 0, 0.35);
}

#hero .eyebrow {
    color: var(--accent-bright);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.85em;
    font-weight: 700;
    margin: 0 0 12px 0;
}

#hero h1 {
    font-size: 2.6em;
    line-height: 1.15;
    margin: 0 0 18px 0;
}

#hero p.lead {
    color: var(--text-muted);
    font-size: 1.15em;
    max-width: 46em;
    margin: 0 0 32px 0;
}

.button-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 13px 28px;
    border-radius: 8px;
    font-weight: 600;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary {
    background: linear-gradient(180deg, var(--accent-bright), var(--accent));
    color: #fff;
    box-shadow: 0 8px 18px rgba(23, 163, 152, 0.28);
}

.btn-primary:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(23, 163, 152, 0.4);
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    color: #fff;
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

/* Section headings */

.section-head {
    max-width: 40em;
    margin: 0 0 44px 0;
}

.section-head .eyebrow {
    color: var(--accent-bright);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.85em;
    font-weight: 700;
    margin: 0 0 8px 0;
}

.section-head h2 {
    font-size: 2em;
    margin: 0 0 10px 0;
}

.section-head p {
    color: var(--text-muted);
    margin: 0;
}

section.page-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border);
}

/* About */

#about .about-grid {
    display: flex;
    gap: 60px;
    align-items: flex-start;
}

#about .about-bio {
    flex: 1.3;
}

#about .about-bio p {
    color: var(--text-muted);
}

#about .about-skills {
    flex: 1;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
}

#about .about-skills h3 {
    margin-top: 0;
    font-size: 1.1em;
}

.tag-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-list li {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.9em;
}

/* Cards grid (Projects) */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 26px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.15s ease, border-color 0.15s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.card .card-body {
    padding: 20px 22px 24px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card h3 {
    margin: 0 0 8px 0;
    font-size: 1.15em;
    color: var(--text);
}

.card p {
    color: var(--text-muted);
    font-size: 0.95em;
    flex: 1;
    margin: 0 0 16px 0;
}

.card .card-link {
    font-weight: 600;
    font-size: 0.9em;
}

/* Servers */

#servers .server-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 26px;
}

#servers .server-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 26px 28px;
}

#servers .server-card h3 {
    margin: 0 0 8px 0;
}

#servers .server-card p {
    color: var(--text-muted);
    margin: 0;
}

#servers .server-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    margin: 0 0 18px 0;
}

#servers .server-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

#servers .server-logo-placeholder {
    border: 1px dashed var(--border);
    border-radius: 50%;
    background: var(--surface-alt);
    color: var(--text-muted);
    font-size: 1.4em;
    font-weight: 700;
}

/* Contact */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.contact-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-card img {
    width: 34px;
    height: 34px;
}

.contact-card h3 {
    margin: 0 0 4px 0;
    font-size: 1em;
    color: var(--text-muted);
    font-weight: 500;
}

.contact-card a {
    font-weight: 600;
    color: var(--text);
}

.contact-card a:hover {
    color: var(--accent-bright);
}

/* Footer */

#site-footer {
    padding: 30px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85em;
}

#site-footer a {
    color: var(--text-muted);
}

#site-footer a:hover {
    color: var(--accent-bright);
}

/* Responsive */

@media (max-width: 760px) {
    #nav-toggle {
        display: inline-block;
    }

    #nav {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        gap: 0;
        display: none;
    }

    #nav.open {
        display: flex;
    }

    #nav a {
        padding: 16px 30px;
        border-bottom: 1px solid var(--border);
    }

    #hero .container {
        flex-direction: column-reverse;
        text-align: center;
        gap: 34px;
    }

    #hero .button-group {
        justify-content: center;
    }

    #about .about-grid {
        flex-direction: column;
    }

    section.page-section {
        padding: 60px 0;
    }
}