:root {
    --bg-1: #06112a;
    --bg-2: #0a2f6f;
    --bg-3: #1f6fd1;
    --surface: rgba(8, 23, 56, 0.62);
    --surface-solid: #0c214f;
    --card: rgba(255, 255, 255, 0.08);
    --text: #eef6ff;
    --muted: #c8daf9;
    --accent: #ffd166;
    --accent-2: #00d1b2;
    --white: #ffffff;
    --shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --max-width: 1120px;
    --ring: 0 0 0 3px rgba(255, 209, 102, 0.35);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    font-family: "Sora", "Segoe UI", sans-serif;
    line-height: 1.6;
    min-height: 100vh;
    background:
        radial-gradient(circle at 85% 15%, rgba(255, 209, 102, 0.18), transparent 30%),
        radial-gradient(circle at 15% 80%, rgba(0, 209, 178, 0.16), transparent 35%),
        linear-gradient(140deg, var(--bg-1), var(--bg-2) 55%, var(--bg-3));
}

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

a {
    color: inherit;
}

.skip-link {
    position: absolute;
    top: -60px;
    left: 16px;
    background: var(--accent);
    color: #1b1b1b;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    z-index: 9999;
    font-weight: 700;
    text-decoration: none;
}

.skip-link:focus {
    top: 16px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(12px);
    background: rgba(5, 16, 40, 0.65);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-decoration: none;
}

.menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: var(--white);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    cursor: pointer;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-nav a {
    text-decoration: none;
    color: var(--muted);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.site-nav a:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--white);
}

.site-nav a.active {
    background: rgba(255, 209, 102, 0.2);
    color: var(--accent);
    font-weight: 600;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.hero {
    min-height: 90vh;
    display: grid;
    place-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.particles-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 860px;
    padding: 36px 24px;
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(5, 16, 40, 0.56), rgba(5, 16, 40, 0.18));
    border: 1px solid rgba(255, 255, 255, 0.14);
}

.hero-photo {
    width: 152px;
    height: 152px;
    margin: 0 auto 22px;
    object-fit: cover;
    border-radius: 999px;
    border: 4px solid rgba(255, 255, 255, 0.82);
    box-shadow: var(--shadow);
}

h1,
h2,
h3 {
    margin-top: 0;
    line-height: 1.25;
}

h1 {
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    font-size: clamp(1.85rem, 4vw, 3.15rem);
    margin-bottom: 14px;
}

.lead {
    color: var(--muted);
    font-size: 1.05rem;
    margin-bottom: 28px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    cursor: pointer;
    text-decoration: none;
    font-weight: 700;
    border-radius: 999px;
    padding: 12px 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.button-primary {
    background: var(--accent);
    color: #1a1f2f;
    box-shadow: 0 10px 24px rgba(255, 209, 102, 0.26);
}

.button-secondary {
    background: rgba(255, 255, 255, 0.14);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.button:hover {
    transform: translateY(-2px);
}

.button:active {
    transform: translateY(0);
}

.section {
    padding: 72px 0;
}

.section-title {
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    font-size: clamp(1.45rem, 2.6vw, 2rem);
    margin-bottom: 18px;
}

.surface {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.section-content {
    padding: 28px;
}

.grid {
    display: grid;
    gap: 16px;
}

.skills-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.skill-chip {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    min-height: 76px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.skill-chip:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.16);
}

.timeline-item+.timeline-item {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.timeline-item p {
    margin: 0;
}

.muted {
    color: var(--muted);
}

.project-shell {
    text-align: left;
}

.project-preview-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    margin-top: 16px;
}

.preview-card {
    padding: 16px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.07);
    border: 1px dashed rgba(255, 255, 255, 0.28);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 22px;
}

.contact-panel,
.form-panel {
    padding: 26px;
}

.contact-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
}

.contact-list strong {
    color: var(--white);
}

.form-field {
    margin-bottom: 14px;
}

.form-field label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
}

.form-field input,
.form-field textarea {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: var(--radius-sm);
    padding: 11px 12px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--white);
    font: inherit;
}

.form-field textarea {
    min-height: 140px;
    resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
    color: rgba(238, 246, 255, 0.65);
}

.helper {
    color: var(--muted);
    font-size: 0.92rem;
    margin-top: -2px;
    margin-bottom: 14px;
}

.site-footer {
    margin-top: 56px;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(4, 12, 30, 0.55);
}

.footer-wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 22px 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.social-links {
    display: flex;
    align-items: center;
    gap: 10px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 999px;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.12);
    transition: background-color 0.2s ease;
}

.social-links a:hover {
    background: rgba(255, 255, 255, 0.24);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: none;
    box-shadow: var(--ring);
}

@media (max-width: 850px) {
    .skills-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .contact-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .skills-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .site-nav {
        position: absolute;
        right: 16px;
        top: 62px;
        width: min(240px, calc(100% - 32px));
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 10px;
        border-radius: var(--radius-md);
        background: var(--surface-solid);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .site-nav.open {
        display: flex;
    }

    .site-nav a {
        width: 100%;
    }

    .hero {
        min-height: 84vh;
    }

    .hero-content,
    .section-content,
    .contact-panel,
    .form-panel {
        padding: 22px;
    }
}

@media (max-width: 430px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

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

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

    .button:hover,
    .skill-chip:hover {
        transform: none;
    }
}