* {
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    color: #e5e7eb;
    line-height: 1.6;
    padding-top: 20px;
}

.container {
    max-width: 90vw;
    margin: auto;
    background: #020617;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.4);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #38bdf8;
}

.subtitle {
    font-size: 1.1rem;
    color: #94a3b8;
    margin-bottom: 30px;
}

h2 {
    margin-top: 35px;
    margin-bottom: 12px;
    font-size: 1.6rem;
    color: #f8fafc;
    border-left: 4px solid #38bdf8;
    padding-left: 12px;
}

p {
    margin-bottom: 15px;
    color: #cbd5f5;
}

ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

ul li {
    margin-bottom: 8px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.tech {
    background: #1e293b;
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: #38bdf8;
}

.links {
    margin-top: 20px;
}

.links a {
    display: inline-block;
    margin-right: 15px;
    margin-top: 10px;
    text-decoration: none;
    background: #38bdf8;
    color: #020617;
    padding: 10px 18px;
    border-radius: 6px;
    font-weight: bold;
    transition: background 0.3s ease;
}

.links a:hover {
    background: #0ea5e9;
}

.note {
    margin-top: 25px;
    padding: 15px;
    background: #020617;
    border-left: 4px solid #22c55e;
    color: #bbf7d0;
    border-radius: 6px;
}

@media (max-width: 576px) {
    .container {
        padding: 20px;
        margin-top: 60px;
    }

    h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    p,
    ul li {
        font-size: 0.9rem;
    }

    .tech {
        font-size: 0.8rem;
        padding: 6px 12px;
    }

    .links a {
        font-size: 0.9rem;
        padding: 8px 14px;
    }

    .note {
        font-size: 0.9rem;
        padding: 12px;
    }
}

@media (min-width: 577px) and (max-width: 768px) {
    .container {
        padding: 30px;
        margin-top: 60px;
    }

    h1 {
        font-size: 2.2rem;
    }

    .subtitle {
        font-size: 1.05rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    p,
    ul li {
        font-size: 1rem;
    }

    .tech {
        font-size: 0.85rem;
        padding: 7px 13px;
    }

    .links a {
        font-size: 0.95rem;
        padding: 9px 16px;
    }

    .note {
        font-size: 0.95rem;
        padding: 14px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 35px;
    }

    h1 {
        font-size: 2.4rem;
    }

    h2 {
        font-size: 1.55rem;
    }

    .subtitle {
        font-size: 1.08rem;
    }

    p,
    ul li {
        font-size: 1.05rem;
    }

    .tech {
        font-size: 0.9rem;
        padding: 8px 14px;
    }

    .links a {
        font-size: 1rem;
        padding: 10px 18px;
    }

    .note {
        font-size: 1rem;
        padding: 15px;
    }
}

@media (min-width: 1200px) {
    .container {
        padding: 50px;
    }

    h1 {
        font-size: 2.8rem;
    }

    h2 {
        font-size: 1.7rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }
}