:root {
    --1: #1C1C1C;
    --2: #2E2E2E;
    --3: #494949;
    --4: #7A7A7A;
    --5: #BFBFBF;
    --6: #E5E5E5;
    --exp-red: #d32f2f;
    --exp-yellow: #ffcc00;
    --exp-white: #ffffff;
    --exp-black: #000000;
}

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

body {
    background-color: var(--1);
    color: var(--6);
    font-family: 'Courier New', monospace;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
    position: relative;
    overflow-y: auto;   
    overflow-x: hidden; 
}

header {
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--2);
    border-bottom: 1px solid var(--3);
    width: 100%;
    z-index: 1;
    position: relative; 
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--6);
}

nav {
    display: flex;
    align-items: center;
    width: 100%;
}

nav a {
    margin-left: 1.5rem;
    text-decoration: none;
    color: var(--5);
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--6);
}

.exp {
    margin-left: auto;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
    z-index: 1;
    position: relative; 
}

.home-page main {
    cursor: pointer;
}

.none-text {
    font-size: 5rem;
    color: var(--5);
    transition: opacity 0.5s ease;
}

.hidden-text {
    display: none;
    margin-top: 2rem;
    font-size: 1.1rem;
    line-height: 1.7;
    max-width: 600px;
}

.hidden-text p {
    margin-bottom: 1.5rem;
}

.small {
    font-size: 0.9rem;
    color: var(--4);
}

footer {
    padding: 1.5rem 1rem;
    background-color: var(--2);
    border-top: 1px solid var(--3);
    width: 100%;
    z-index: 1;
    position: relative;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.social-links {
    margin-bottom: 0.5rem;
}

.social-links a {
    text-decoration: none;
    color: var(--5);
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--6);
}

.separator {
    margin: 0 0.75rem;
    color: var(--4);
}

.copyright {
    font-size: 0.85rem;
    color: var(--4);
    margin-top: 0.5rem;
}

main.container a {
    color: var(--5);
    text-decoration: none;
    border-bottom: 1px dotted var(--5);
    transition: color 0.3s ease, border-color 0.3s ease;
}

main.container a:hover {
    color: var(--6);
    border-bottom-color: var(--6);
}


.page-long-content main {
    justify-content: flex-start;
    padding-top: 4rem;
    padding-bottom: 4rem;
}


.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    text-align: left;
}

.profile-card {
    background-color: var(--2);
    border: 1px solid var(--3);
    padding: 1.5rem;
    border-radius: 4px;
    text-align: center;
}

.profile-card h2 {
    margin-bottom: 0.5rem;
}

.profile-card .tags span {
    display: inline-block;
    background-color: var(--3);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
    margin: 0.2rem;
}

.about-columns {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.about-column h3 {
    color: var(--5);
    border-bottom: 1px solid var(--3);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.about-column ul {
    list-style: none;
}

.about-column ul li {
    background-color: var(--2);
    border: 1px solid var(--3);
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 0.75rem;
    color: var(--5);
}

.philosophy-block {
    background-color: var(--1);
    border: 1px solid var(--3);
    padding: 2rem;
    margin-top: 2rem;
    border-radius: 4px;
}

.philosophy-block p {
    color: var(--5);
    margin-bottom: 1rem;
    font-style: italic;
}

.service-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    width: 100%;
    max-width: 1200px;
    padding: 2rem;
}

.service-card {
    background-color: var(--2);
    border: 1px solid var(--3);
    border-radius: 4px;
    padding: 1.5rem;
    text-align: left;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    text-decoration: none;
    color: var(--5);
}

.service-card:hover {
    background-color: var(--3);
    border-color: var(--4);
    color: var(--6);
}

.service-card h3 {
    margin: 0 0 0.5rem 0;
    color: var(--6);
    font-size: 1.2rem;
}

.service-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--4);
}


.exp-page .service-card {
    border-color: var(--exp-red);
}

.exp-page .service-card:hover {
    border-color: var(--exp-yellow);
}

.exp-page .service-card h3 {
    color: var(--exp-red);
}

.exp-page .service-card p {
    color: var(--exp-yellow);
}



@media (min-width: 768px) {
    .about-columns {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 600px) {
    .none-text {
        font-size: 3.5rem;
    }
    header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }
    nav {
        justify-content: center;
    }
    .exp {
        margin-left: 1.5rem; 
    }
}


@media (min-width: 600px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.play-btn {
    background-color: var(--3);
    color: var(--6);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.2s ease;
    margin-top: 1rem;
}

.play-btn:hover {
    background-color: var(--4);
    transform: scale(1.1);
}

.play-btn:focus {
    outline: none;
}

@media (min-width: 900px) {
    .service-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}