body {
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
}

.intro {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    text-align: center;
}
.intro h1 {
    font-size: 4rem;
    font-weight: bold;
    margin-bottom: 1rem;
}
.intro p {
    margin: 0.2rem 0;
    color: #444;
}

/* Socials row */
.socials-row {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
    margin-top: 32px;
}

/* Social button style */
.social-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    padding: 12px 22px;
    border-radius: 12px;
    color: #fff;
    text-decoration: none;
    transition: transform 0.1s, box-shadow 0.1s, opacity 0.2s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    opacity: 0.95;
}
.social-btn i {
    font-size: 1.3rem;
}

/* Màu riêng cho từng mạng xã hội */
.social-btn.youtube   { background: #ff0000; }
.social-btn.facebook  { background: #1877f3; }
.social-btn.discord   { background: #5865f2; }
.social-btn.instagram { background: #e1306c; }
.social-btn.github    { background: #23272d; }

/* Hover effect */
.social-btn:hover {
    opacity: 1;
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 4px 16px rgba(0,0,0,0.10);
}


.full-screen-section {
    height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 32px;
    box-sizing: border-box;
}



.bg-music {
    font-family: monospace;
    color: black;
    padding: 5px;
    display: inline-block;
    border: 1px dashed black;
    margin-top: 50px;
}

.shell-controls button {
    background: none;
    border: 1px solid #e0e0e0;
    color: #222;
    padding: 2px 5px;
    margin: 3px;
    cursor: pointer;
    font-family: monospace;
    transition: background 0.2s, color 0.2s;
}

.shell-controls button:hover {
    background: #948979;
    color: #fff;
}

#timeDisplay {
    margin-left: 10px;
    font-family: monospace;
}

.volume-control {
    margin-top: 5px;
    font-family: monospace;
}

#volumeSlider {
    width: 100px;
}

/* Dark mode styles */
body, .full-screen-section, .bg-music {
    transition: background 0.5s, color 0.5s;
}
body.dark-mode {
    background: #393733 !important;
    color: #e0e0e0 !important;
}
body.dark-mode a { color: #a78bfa !important; }
body.dark-mode .bg-music,
body.dark-mode .full-screen-section {
    background: transparent !important;
}
body.dark-mode .bg-music:hover {
    border-color: #fff9c4;
}
body.dark-mode .social-btn:hover {
    background: #948979 !important;
    color: #fff !important;
}
body.dark-mode .social-btn { background: #393733 !important; color: #e0e0e0 !important; }
body.dark-mode .volume-control  { color: #e0e0e0 !important; }
body.dark-mode .shell-controls  { color: #e0e0e0 !important; }
body.dark-mode .shell-controls button {
    color: #fff;
    border-color: #e0e0e0;
}
body.dark-mode img { box-shadow: 0 4px 32px rgba(0,0,0,0.32) !important; }
body.dark-mode .intro p  { color: #e0e0e0 !important; }
/* Footer terminal style */
.terminal-footer {
    margin: 40px auto 0 auto;
    margin-bottom: 50px;
    max-width: 600px;
    background: #f7f6f2;
    /* Không có border mặc định */
    border: 4px solid transparent;
    border-radius: 22px;
    padding: 18px 28px 12px 28px;
    color: #393733;
    font-family: 'Fira Mono', 'Consolas', monospace;
    box-shadow: 0 2px 16px rgba(0,0,0,0.10);
    transition: border-color 0.5s, background 0.5s, color 0.5s;
}
.terminal-footer:hover {
    border-color: #e7e0b2;
}
body.dark-mode .terminal-footer {
    background: #393733;
    color: #e7e0b2;
    border-color: transparent;
    box-shadow: 0 2px 16px rgba(0,0,0,0.18);
}
body.dark-mode .terminal-footer:hover {
    border-color: #e7e0b2;
}

/* Footer icon đồng bộ màu text */
.footer-icon,
#darkModeBtn.footer-icon {
    background: none;
    border: none;
    padding: 0 6px;
    font-size: 1.3rem;
    color: inherit;
    cursor: pointer;
    transition: color 0.3s, transform 0.3s;
    box-shadow: none;
    position: static;
}

.footer-icon:hover,
#darkModeBtn.footer-icon:hover {
    color: #f7d774 !important;
    transform: scale(1.18) rotate(-8deg);
    background: none;
}

.terminal-header {
    font-size: 1.08rem;
    margin-bottom: 10px;
}
.terminal-header .user { color: #91C8E4; font-weight: bold; }
.terminal-header .path { color: #749BC2; }
.terminal-header .arrow { color: #4682A9; }
.terminal-header .folder { color: #4DA8DA; }
.terminal-body {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}
.copyright {
    font-size: 1.15rem;
    font-weight: 500;
}

.footer-icons {
    display: flex;
    align-items: center;
    gap: 18px;
}

/* Nút switch mode nổi góc phải dưới */
/* #darkModeBtn {
    position: fixed;
    right: 32px;
    bottom: 32px;
    z-index: 1000;
    padding: 12px 14px;
    border-radius: 50%;
    border: none;
    background: #fff;
    color: #fff;
    font-size: 1.6rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.18);
    cursor: pointer;
    transition: background 0.4s, color 0.4s, box-shadow 0.3s;
}
#darkModeBtn:hover {
    box-shadow: 0 4px 24px rgba(0,0,0,0.22);
    background: #ece7c4;
} */