/* --- 主题变量定义 --- */
:root {
    --font-family: 'Fira Code', monospace;
}

/* 默认主题: Cyberpunk */
body, body.theme-cyberpunk {
    --bg-color: #1a1b26;
    --window-bg: #24283b;
    --titlebar-bg: #1f2335;
    --text-color: #c0caf5;
    --key-color: #89ddff;
    --value-color: #c0caf5;
    --separator-color: #565f89;
    --accent-color-1: #bb9af7; /* Filename */
    --accent-color-2: #7aa2f7; /* Permissions */
    --owner-color: #e0af68;
    --command-color: #9ece6a;
    --cursor-color: #f7768e;
    --shadow-color: rgba(0,0,0,0.5);
    --btn-bg: #414868;
    --btn-text: #c0caf5;
}

/* 主题2: Matrix */
body.theme-matrix {
    --bg-color: #000000;
    --window-bg: #0d0d0d;
    --titlebar-bg: #1a1a1a;
    --text-color: #00ff41;
    --key-color: #00ff41;
    --value-color: #3aff7c;
    --separator-color: #008f11;
    --accent-color-1: #adff2f;
    --accent-color-2: #00c700;
    --owner-color: #32cd32;
    --command-color: #50fa7b;
    --cursor-color: #ffffff;
    --shadow-color: rgba(0, 255, 65, 0.2);
    --btn-bg: #003b00;
    --btn-text: #00ff41;
}

/* 主题3: Dracula */
body.theme-dracula {
    --bg-color: #282a36;
    --window-bg: #343746;
    --titlebar-bg: #21222c;
    --text-color: #f8f8f2;
    --key-color: #8be9fd;
    --value-color: #f8f8f2;
    --separator-color: #6272a4;
    --accent-color-1: #bd93f9;
    --accent-color-2: #ff79c6;
    --owner-color: #ffb86c;
    --command-color: #50fa7b;
    --cursor-color: #f8f8f2;
    --shadow-color: rgba(0,0,0,0.4);
    --btn-bg: #6272a4;
    --btn-text: #f8f8f2;
}


/* --- 全局样式 --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    transition: background-color 0.3s ease;
}

/* --- 终端窗口样式 --- */
.terminal-window {
    width: 100%;
    max-width: 900px;
    background: var(--window-bg);
    border-radius: 10px;
    box-shadow: 0 15px 35px var(--shadow-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease;
}

.title-bar {
    background: var(--titlebar-bg);
    padding: 8px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
}

.window-controls .control {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
}
.control.close { background: #ff5f56; }
.control.minimize { background: #ffbd2e; }
.control.maximize { background: #27c93f; }

.title {
    color: var(--separator-color);
    font-weight: 500;
    flex-grow: 1;
    text-align: center;
}

#theme-toggle-btn {
    background: var(--btn-bg);
    color: var(--btn-text);
    border: none;
    padding: 4px 10px;
    border-radius: 5px;
    font-family: var(--font-family);
    cursor: pointer;
    transition: background-color 0.2s;
}
#theme-toggle-btn:hover {
    filter: brightness(1.2);
}

.terminal-body {
    padding: 20px;
    flex-grow: 1;
    overflow-y: auto;
}

/* --- Profile Section (neofetch) --- */
.profile-section {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.ascii-art pre {
    font-family: var(--font-family);
    color: var(--accent-color-1);
    line-height: 1.1;
    font-size: 1em;
}

.profile-details p {
    line-height: 1.8;
}

.profile-details .key { color: var(--key-color); font-weight: bold; }
.profile-details .separator { color: var(--separator-color); }
.profile-details .value { color: var(--value-color); }

#typewriter {
    border-right: 2px solid var(--cursor-color);
    animation: blink-caret .75s step-end infinite;
    white-space: nowrap;
    overflow: hidden;
}

/* --- Links Section (ls -l) --- */
.command-prompt {
    margin-bottom: 10px;
    color: var(--command-color);
}
.prompt-user { color: var(--key-color); }
.prompt-path { color: var(--accent-color-1); }

.file-list {
    list-style: none;
}

.file-list li {
    padding: 5px 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap; /* 移动端换行 */
}

.file-list .permissions { color: var(--accent-color-2); margin-right: 1em; }
.file-list .owner { color: var(--owner-color); margin-right: 1em; }
.file-list .filename {
    color: var(--accent-color-1);
    text-decoration: none;
    background: transparent;
    transition: background-color 0.2s, color 0.2s;
    padding: 2px 5px;
    border-radius: 3px;
}
.file-list .filename:hover {
    background-color: var(--accent-color-1);
    color: var(--window-bg);
}

/* --- Footer --- */
footer {
    padding: 10px 20px;
    background: var(--titlebar-bg);
    border-top: 1px solid var(--separator-color);
}
.prompt {
    font-size: 1em;
}
.cursor {
    display: inline-block;
    background-color: var(--cursor-color);
    width: 0.6em;
    height: 1.2em;
    animation: blink-caret .75s step-end infinite;
    vertical-align: bottom;
}

.beian {
    font-size: 0.8em;
    color: var(--separator-color);
    margin-top: 5px;
}
.beian a {
    color: var(--separator-color);
    text-decoration: none;
}
.beian a:hover {
    color: var(--key-color);
}

/* --- Animations --- */
@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--cursor-color); }
}

/* --- 响应式设计 --- */
@media (max-width: 600px) {
    body {
        padding: 0;
        align-items: flex-start;
    }
    .terminal-window {
        border-radius: 0;
        min-height: 100vh;
    }
    .profile-section {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 20px;
    }
    .ascii-art {
        font-size: 0.8em;
    }
    .file-list li {
      font-size: 0.9em;
    }
}