:root {
    --bg-color: #0b0c10;
    --card-bg: #1f2833;
    --accent-green: #45f3ff;
    --accent-red: #ff3b30;
    --text-color: #c5c6c7;
    --text-muted: #66788a;
    --border-color: #2f3b4c;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

.app-container {
    width: 100%;
    max-width: 400px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
}

h1 {
    font-size: 2rem;
    color: #fff;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 30px;
}

.card {
    width: 100%;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

input {
    width: 100%;
    padding: 16px;
    background-color: #0b0c10;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    text-align: center;
    letter-spacing: 2px;
}

input:focus {
    outline: none;
    border-color: var(--accent-green);
}

.btn {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
}

.primary-btn {
    background-color: var(--accent-green);
    color: #0b0c10;
}

.secondary-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: #fff;
}

.divider {
    margin: 20px 0;
    color: var(--text-muted);
    font-size: 0.8rem;
    position: relative;
    width: 100%;
}

.code-display {
    margin-top: 15px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent-green);
    letter-spacing: 4px;
}

/* RADIO SCREEN & FRIENDS LIST */
.status-panel {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.status-dot.connected {
    background-color: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
}

.room-banner {
    font-size: 1.1rem;
    font-weight: bold;
    color: #fff;
    margin-bottom: 35px;
    letter-spacing: 1px;
}

.friends-list-container {
    width: 100%;
    margin-bottom: 30px;
    text-align: left;
}

.friends-list-container h3 {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.player-list {
    background-color: #0b0c10;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    max-height: 180px;
    overflow-y: auto;
    width: 100%;
}

.player-item {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.player-item:last-child {
    border-bottom: none;
}

.player-item .indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: transparent;
}

.player-item.receiving-audio .indicator {
    background-color: var(--accent-green);
    box-shadow: 0 0 10px var(--accent-green);
}

/* PUSH TO TALK BUTTON */
.ptt-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    width: 100%;
}

.ptt-btn {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: #111;
    border: 4px solid var(--border-color);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.15s ease;
}

.ptt-inner {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--card-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid var(--border-color);
}

.ptt-btn span {
    color: #fff;
    font-weight: bold;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.ptt-btn.transmitting {
    border-color: var(--accent-green);
    box-shadow: 0 0 30px rgba(69, 243, 255, 0.4);
}

.ptt-btn.transmitting .ptt-inner {
    background: var(--accent-green);
}

.ptt-btn.transmitting span {
    color: #0b0c10;
}
/* WHISPER BUTTON STYLES */
.private-ptt-btn {
    background-color: #2c2c2e;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.75rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.15s ease;
    outline: none;
}

.private-ptt-btn:active {
    transform: scale(0.95);
}

.private-ptt-btn.active-whisper {
    background-color: var(--accent-red);
    color: #fff;
    border-color: var(--accent-red);
    box-shadow: 0 0 10px rgba(255, 59, 48, 0.5);
}

.friend-row-right {
    display: flex;
    align-items: center;
    gap: 12px;
}