/* Visual system */
:root {
    --bg-primary: #fbfaf7;
    --bg-secondary: #f1efe8;
    --surface: #ffffff;
    --surface-strong: #f7f3eb;
    --text-primary: #15191d;
    --text-secondary: #58616b;
    --text-muted: #74808c;
    --accent: #0f766e;
    --accent-hover: #0b5f59;
    --accent-soft: #d9f0ed;
    --accent-contrast: #ffffff;
    --border: #ded8cb;
    --border-strong: #cac0af;
    --shadow: 0 18px 45px rgba(35, 45, 55, 0.08);
    --shadow-subtle: 0 10px 30px rgba(35, 45, 55, 0.06);
    --font-main: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --max-width: 960px;
    --content-width: 720px;
    --spacing-section: 4.75rem;
    --radius: 8px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #121415;
        --bg-secondary: #1b1e20;
        --surface: #181b1d;
        --surface-strong: #202426;
        --text-primary: #f4f1ea;
        --text-secondary: #c1c6c9;
        --text-muted: #929a9f;
        --accent: #5ee0d2;
        --accent-hover: #8ff0e6;
        --accent-soft: rgba(94, 224, 210, 0.13);
        --accent-contrast: #09211f;
        --border: #303437;
        --border-strong: #4a5155;
        --shadow: 0 18px 45px rgba(0, 0, 0, 0.28);
        --shadow-subtle: 0 10px 30px rgba(0, 0, 0, 0.18);
    }
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: var(--font-main);
    background:
        radial-gradient(circle at top left, rgba(15, 118, 110, 0.1), transparent 30rem),
        linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    text-rendering: optimizeLegibility;
}

a {
    color: var(--accent);
    text-underline-offset: 0.18em;
}

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

::selection {
    color: var(--accent-contrast);
    background: var(--accent);
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navbar */
nav {
    padding: 0.8rem 0;
    border-bottom: 1px solid color-mix(in srgb, var(--border), transparent 25%);
    background-color: color-mix(in srgb, var(--bg-primary), transparent 14%);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(18px);
}

nav .container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.45rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 650;
    line-height: 1;
    padding: 0.62rem 0.82rem;
    border-radius: 999px;
    transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

nav a:hover {
    color: var(--text-primary);
    background: var(--surface);
    box-shadow: var(--shadow-subtle);
}

nav a.active {
    color: var(--accent-hover);
    background: var(--accent-soft);
}

/* Hero Section */
.hero {
    position: relative;
    overflow: hidden;
    padding: 7rem 0 6.25rem;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.hero::before {
    content: "";
    position: absolute;
    inset: 1.5rem 1.5rem auto;
    height: 13rem;
    pointer-events: none;
    background:
        linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent), transparent 86%), transparent),
        repeating-linear-gradient(90deg, transparent 0 5.75rem, color-mix(in srgb, var(--border), transparent 35%) 5.75rem 5.8125rem);
    opacity: 0.72;
    mask-image: linear-gradient(180deg, #000, transparent);
}

.hero .container {
    position: relative;
}

.hero h1 {
    max-width: 12ch;
    margin: 0 auto 0.9rem;
    font-size: clamp(3rem, 8vw, 5.9rem);
    font-weight: 780;
    line-height: 0.96;
    letter-spacing: 0;
}

.subtitle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    padding: 0.45rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface), transparent 18%);
    color: var(--text-secondary);
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    font-weight: 600;
    line-height: 1.35;
    box-shadow: var(--shadow-subtle);
}

/* Sections */
.section {
    padding: var(--spacing-section) 0;
    border-bottom: 1px solid var(--border);
}

.section:last-of-type {
    border-bottom: none;
}

.alt-bg {
    background-color: var(--bg-secondary);
}

.section h2 {
    max-width: var(--content-width);
    margin: 0 auto 1.65rem;
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 760;
    line-height: 1.12;
    letter-spacing: 0;
}

.content,
.hire-content,
.strengths-list {
    max-width: var(--content-width);
    margin: 0 auto;
}

/* Content */
.content p {
    margin-bottom: 1.05rem;
    color: var(--text-secondary);
    font-size: 1.02rem;
}

.content p:last-child {
    margin-bottom: 0;
}

.content strong {
    color: var(--text-primary);
    font-weight: 750;
}

.content h3 {
    margin: 2rem 0 0.6rem;
    font-size: 1.1rem;
    line-height: 1.3;
}

.content ul {
    margin: 0.5rem 0 1.4rem 1.2rem;
    color: var(--text-secondary);
}

.content li {
    padding-left: 0.25rem;
    margin-bottom: 0.45rem;
}

/* Strengths List */
.strengths-list {
    list-style: none;
    padding: 0;
    display: grid;
    gap: 0.75rem;
}

.strengths-list li {
    position: relative;
    padding: 1.15rem 1.15rem 1.15rem 3rem;
    color: var(--text-secondary);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-subtle);
}

.strengths-list li::before {
    content: "";
    position: absolute;
    left: 1.1rem;
    top: 1.38rem;
    width: 0.72rem;
    height: 0.72rem;
    border-radius: 999px;
    background: var(--accent);
    box-shadow: 0 0 0 0.35rem var(--accent-soft);
}

/* Technologies Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}

.tech-category {
    min-height: 100%;
    padding: 1.35rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-subtle);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.tech-category:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: color-mix(in srgb, var(--accent), var(--border) 50%);
}

.tech-category h3 {
    font-size: 0.98rem;
    font-weight: 760;
    margin-bottom: 0.55rem;
    color: var(--text-primary);
}

.tech-category p {
    font-size: 0.94rem;
    color: var(--text-secondary);
    line-height: 1.58;
}

/* Links List */
.links-list {
    display: grid;
    gap: 0.85rem;
    max-width: var(--content-width);
    margin: 0 auto;
}

.link-item {
    display: flex;
    flex-direction: column;
    padding: 1.2rem 1.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    box-shadow: var(--shadow-subtle);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.link-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: color-mix(in srgb, var(--accent), var(--border) 40%);
}

.link-title {
    font-size: 1.04rem;
    font-weight: 760;
    color: var(--text-primary);
    margin-bottom: 0.18rem;
}

.link-url {
    font-size: 0.9rem;
    color: var(--text-muted);
    overflow-wrap: anywhere;
}

/* Hire Content */
.hire-content p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.contact-highlight {
    font-size: 1.12rem;
    padding: 1.35rem 1.45rem;
    background: var(--surface-strong);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    margin-top: 1.5rem;
    box-shadow: var(--shadow-subtle);
}

.contact-highlight a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 720;
    overflow-wrap: anywhere;
}

.contact-highlight a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Internal links */
#intlinks {
    padding: 2rem 0;
}

#intlinks p {
    max-width: var(--content-width);
    margin: 0 auto;
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Footer */
footer {
    padding: 3.5rem 0;
    text-align: center;
    border-top: 1px solid var(--border);
}

.contact-placeholder {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.45rem;
}

.contact-placeholder a {
    color: var(--accent);
    font-weight: 680;
    text-decoration: none;
}

.contact-placeholder a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.copyright {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 700px) {
    :root {
        --spacing-section: 3.25rem;
    }

    body {
        font-size: 15px;
    }

    .container {
        padding: 0 1rem;
    }

    nav {
        padding: 0.65rem 0;
    }

    nav .container {
        justify-content: flex-start;
        gap: 0.35rem;
    }

    nav a {
        font-size: 0.86rem;
        padding: 0.5rem 0.62rem;
    }

    .hero {
        padding: 4.7rem 0 4.2rem;
    }

    .hero::before {
        inset: 1rem 0.75rem auto;
        height: 9rem;
    }

    .hero h1 {
        max-width: 10ch;
        font-size: clamp(2.75rem, 16vw, 4rem);
    }

    .subtitle {
        white-space: normal;
    }

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

    .strengths-list li {
        padding: 1rem 1rem 1rem 2.55rem;
    }

    .strengths-list li::before {
        left: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

/* Print styles */
@media print {
    :root {
        --bg-primary: #ffffff;
        --bg-secondary: #ffffff;
        --surface: #ffffff;
        --surface-strong: #ffffff;
        --text-primary: #111111;
        --text-secondary: #333333;
        --text-muted: #555555;
        --border: #cccccc;
        --border-strong: #999999;
    }

    body {
        background: #ffffff;
    }

    nav,
    .hero::before {
        display: none;
    }

    .hero,
    footer {
        border: none;
    }

    .section {
        padding: 2rem 0;
    }

    .tech-category,
    .link-item,
    .strengths-list li,
    .contact-highlight {
        box-shadow: none;
        break-inside: avoid;
    }
}