:root {
    --tb-cyan: #00f2ff;
    --tb-orange: #ffae00;
    --tb-bg: #05080a;
    --tb-border: rgba(0, 242, 255, 0.3);
}

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

body {
    background-color: var(--tb-bg);
    color: var(--tb-cyan);
    font-family: 'Courier New', monospace;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    padding: 15px;
    padding-bottom: 50px; /* Safe space for buttons */
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--tb-border);
    padding-bottom: 10px;
    margin-bottom: 10px;
}

#log {
    flex: 1;
    margin-bottom: 20px;
    padding: 15px;
    border: 1px solid var(--tb-border);
    background: rgba(0, 242, 255, 0.02);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.msg-entry { padding: 10px; border-radius: 2px; border-left: 3px solid var(--tb-cyan); background: rgba(0, 242, 255, 0.05); word-wrap: break-word;}
.sent { border-left-color: #555; color: #888; font-style: italic; }
.system { border: none; color: var(--tb-orange); font-size: 0.8rem; text-align: center; padding: 5px; }

.input-dock { display: flex; flex-direction: column; gap: 10px; }
.button-row { display: flex; gap: 10px; }

input {
    background: #000;
    border: 1px solid var(--tb-border);
    color: #fff;
    padding: 15px;
    font-size: 16px;
    border-radius: 4px;
}

button {
    flex: 1;
    background: var(--tb-cyan);
    color: #000;
    border: none;
    padding: 15px;
    font-weight: bold;
    cursor: pointer;
    text-transform: uppercase;
    border-radius: 4px;
}

.alt-btn { background: var(--tb-orange); }
button:active { filter: brightness(1.5); }