@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --accent-color: #0ea5e9;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --background-primary: #ffffff;
    --background-secondary: #f8fafc;
    --background-accent: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 20px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 20px 36px rgba(15, 23, 42, 0.12);
    --container-max-width: 1200px;
    --radius: 12px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background: var(--background-primary);
    line-height: 1.6;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.light-nav,
.cyber-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    background: var(--background-primary);
    backdrop-filter: blur(8px);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.nav-logo {
    text-decoration: none;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--text-primary);
    white-space: nowrap;
}

.nav-menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 0.8rem;
    border-radius: 8px;
    transition: color 0.2s ease, background-color 0.2s ease;
}

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

.nav-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle,
.nav-search {
    width: 38px;
    height: 38px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    background: var(--background-primary);
}

.theme-toggle {
    cursor: pointer;
}

.theme-toggle:hover,
.nav-search:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.light-main,
.cyber-main {
    padding-top: 74px;
}

.light-hero,
.cyber-hero {
    position: relative;
    overflow: hidden;
    padding: 3.5rem 0 4rem;
    background: linear-gradient(145deg, var(--background-secondary), var(--background-primary));
}

.hero-content {
    position: relative;
}

.about-hero-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2.5rem;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    margin-bottom: 1rem;
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    letter-spacing: 0.05em;
    font-weight: 700;
    font-size: 0.8rem;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.3rem);
    font-weight: 300;
    line-height: 1.2;
    margin-bottom: 0.6rem;
}

.hero-title .highlight {
    color: var(--primary-color);
    font-weight: 800;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 2.2vw, 1.4rem);
    color: var(--text-secondary);
    margin-bottom: 0.9rem;
    font-weight: 500;
}

.hero-description {
    max-width: 700px;
    color: var(--text-secondary);
    margin-bottom: 1.6rem;
}

.btn-primary {
    display: inline-block;
    text-decoration: none;
    border-radius: 10px;
    background: var(--primary-color);
    color: #ffffff;
    font-weight: 700;
    padding: 0.7rem 1.2rem;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-primary.large {
    padding: 0.85rem 1.35rem;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.about-photo {
    width: 280px;
    height: 350px;
    border-radius: var(--radius);
    overflow: hidden;
    border: 3px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.about-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-placeholder {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-color);
    color: var(--text-secondary);
    background: linear-gradient(145deg, var(--background-accent), var(--background-secondary));
    font-weight: 600;
}

.social-sidebar {
    position: absolute;
    top: 50%;
    right: 1.75rem;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.social-sidebar a {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--background-primary);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.social-sidebar a:hover {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.light-beyond-software,
.cyber-beyond-software,
.light-partner,
.cyber-partner {
    padding: 4rem 0;
    background: var(--background-primary);
}

.light-services,
.cyber-services {
    padding: 4rem 0;
    background: var(--background-secondary);
}

.section-title {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    margin-bottom: 1.6rem;
    font-weight: 800;
}

.about-text {
    max-width: 1000px;
}

.about-text p {
    margin: 0.95rem 0;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.2rem;
}

.skill-card {
    background: var(--background-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.2rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.skill-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.skill-card.highlighted {
    background: linear-gradient(145deg, var(--primary-color), var(--accent-color));
    color: #ffffff;
    border-color: transparent;
}

.skill-icon {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    background: var(--background-accent);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.9rem;
}

.skill-card.highlighted .skill-icon {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

.skill-card h3 {
    font-size: 1.05rem;
    margin-bottom: 0.35rem;
}

.skill-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.skill-card.highlighted p {
    color: #e9f6ff;
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.experience-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--background-primary);
    text-align: center;
    padding: 1.1rem;
}

.experience-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin: 0 auto 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    background: linear-gradient(145deg, var(--primary-color), var(--accent-color));
}

.experience-item h3 {
    font-size: 1rem;
    margin-bottom: 0.45rem;
}

.experience-item p {
    font-size: 0.92rem;
    color: var(--text-secondary);
}

.light-footer,
.cyber-footer {
    border-top: 1px solid var(--border-color);
    background: var(--background-accent);
    padding: 1.3rem 0;
    text-align: center;
    color: var(--text-secondary);
}

body.cyber-theme {
    --primary-color: #22d3ee;
    --primary-hover: #06b6d4;
    --accent-color: #2563eb;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --background-primary: #0b1220;
    --background-secondary: #111a2b;
    --background-accent: #172338;
    --border-color: #223553;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 36px rgba(0, 0, 0, 0.45);
}

@media (max-width: 980px) {
    .about-hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .about-photo {
        margin: 0 auto;
    }

    .social-sidebar {
        position: static;
        transform: none;
        flex-direction: row;
        justify-content: center;
        margin-top: 1.2rem;
    }

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

@media (max-width: 760px) {
    .container,
    .nav-container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .nav-container {
        flex-wrap: wrap;
    }

    .nav-menu {
        width: 100%;
        justify-content: center;
    }

    .nav-controls {
        margin-left: auto;
    }

    .about-photo {
        width: 240px;
        height: 300px;
    }
}