/* ── Theme variables ─────────────────────────────────────────── */
:root {
    --bg-outer:     #101010;
    --bg-titlebar:  #2c2c2c;
    --bg-terminal:  #1e1e1e;
    --text:         #d4d4d4;
    --prompt-color: #4ec9b0;
    --cursor-color: #d4d4d4;
    --link-color:   #58a6ff;
    --titlebar-fg:  #888888;
    --border:       rgba(255, 255, 255, 0.07);
    --shadow:       rgba(0, 0, 0, 0.65);
    --dot-red:      #ff5f57;
    --dot-yellow:   #ffbd2e;
    --dot-green:    #28c840;
}

body.light-theme {
    --bg-outer:     #a8a8a8;
    --bg-titlebar:  #dcdcdc;
    --bg-terminal:  #f5f5f5;
    --text:         #1a1a1a;
    --prompt-color: #007acc;
    --cursor-color: #1a1a1a;
    --link-color:   #0451a5;
    --titlebar-fg:  #555555;
    --border:       rgba(0, 0, 0, 0.12);
    --shadow:       rgba(0, 0, 0, 0.28);
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
}

/* ── Page ────────────────────────────────────────────────────── */
body {
    background-color: var(--bg-outer);
    color: var(--text);
    font-family: Menlo, Monaco, Consolas, 'Courier New', monospace;
    margin: 0;
    padding: 48px 20px 40px;
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    transition: background-color 0.3s ease;
}

/* ── Terminal window chrome ──────────────────────────────────── */
#terminal-window {
    width: 100%;
    max-width: 920px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 24px 64px var(--shadow), 0 0 0 1px var(--border);
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 88px);
    transition: box-shadow 0.3s ease;
}

#titlebar {
    background-color: var(--bg-titlebar);
    padding: 11px 16px;
    display: flex;
    align-items: center;
    flex-shrink: 0;
    border-bottom: 1px solid var(--border);
    position: relative;
    user-select: none;
    transition: background-color 0.3s ease;
}

#traffic-lights {
    display: flex;
    gap: 8px;
    align-items: center;
    z-index: 1;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    opacity: 0.9;
}

.dot.red    { background-color: var(--dot-red); }
.dot.yellow { background-color: var(--dot-yellow); }
.dot.green  { background-color: var(--dot-green); }

#titlebar-text {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    color: var(--titlebar-fg);
    font-size: 13px;
    letter-spacing: 0.01em;
    pointer-events: none;
    transition: color 0.3s ease;
}

/* ── Terminal body ───────────────────────────────────────────── */
#terminal {
    background-color: var(--bg-terminal);
    padding: 16px 20px 20px;
    flex: 1;
    overflow-x: hidden;
    transition: background-color 0.3s ease;
}

/* ── Output text ─────────────────────────────────────────────── */
p {
    margin: 0;
    line-height: 1.45;
    padding-bottom: 1px;
    font-size: 14px;
    color: var(--text);
    transition: color 0.3s ease;
}

/* ── Input line ──────────────────────────────────────────────── */
#input-line {
    display: flex;
    align-items: center;
    margin-top: 2px;
    position: relative;
}

.prompt {
    margin-right: 8px;
    color: var(--prompt-color);
    font-weight: bold;
    white-space: nowrap;
    font-size: 14px;
    transition: color 0.3s ease;
}

#cmd-text {
    white-space: pre;
    color: var(--text);
    font-size: 14px;
}

/* ── Blinking cursor ─────────────────────────────────────────── */
#cursor {
    display: inline-block;
    width: 7px;
    height: 1.1em;
    background-color: var(--cursor-color);
    margin-left: 1px;
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
    transition: background-color 0.3s ease;
}

@keyframes blink {
    from, to { opacity: 1; }
    50%       { opacity: 0; }
}

/* ── Clickable command chips (ls output + quick-access bar) ─── */
.cmd-chip {
    color: var(--link-color);
    cursor: pointer;
    transition: opacity 0.15s ease;
    user-select: none;
}

.cmd-chip:hover {
    text-decoration: underline;
    opacity: 0.75;
}

/* ── Hidden real input ───────────────────────────────────────── */
#command-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: text;
    border: none;
    outline: none;
    background: transparent;
    color: transparent;
    caret-color: transparent;
    font-family: inherit;
}