/* Reset and base styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #00c853;
    --error-color: #ff5252;
    --active-color: #f5576c;
    --bg-dark: #1a1a2e;
    --bg-darker: #16213e;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --panel-bg: rgba(255, 255, 255, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logout-button {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.2s ease;
}

.logout-button:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

h1 {
    font-size: 2rem;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.status {
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.status.connected {
    background: var(--success-color);
    color: #000;
}

.status.disconnected {
    background: var(--error-color);
    color: #fff;
}

.status.connecting {
    background: #ffc107;
    color: #000;
}

/* Main dual panel layout */
.dual-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    flex: 1;
}

/* Speaker panels */
.speaker-panel {
    background: var(--panel-bg);
    border-radius: 24px;
    padding: 30px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
}

.speaker-panel h2 {
    text-align: center;
    margin-bottom: 25px;
    font-weight: 400;
    font-size: 1.5rem;
}

/* Push-to-talk button */
.ptt-button {
    width: 100%;
    padding: 35px 20px;
    font-size: 1.3rem;
    border: none;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.ptt-button:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
}

.ptt-button:active,
.ptt-button.active {
    background: linear-gradient(135deg, #f093fb 0%, var(--active-color) 100%);
    transform: scale(0.98);
    box-shadow: 0 0 40px rgba(245, 87, 108, 0.5);
}

.ptt-button .button-icon {
    font-size: 2rem;
}

.ptt-button.active .button-text::after {
    content: " (Recording...)";
    font-size: 0.9rem;
}

/* Transcript area */
.transcript-area {
    margin-top: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.transcript-area h3 {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.transcript-text {
    min-height: 80px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    line-height: 1.8;
    font-size: 1.1rem;
}

.original .transcript-text {
    border-left: 4px solid var(--primary-color);
}

.translation .transcript-text {
    border-left: 4px solid var(--success-color);
}

/* Interim text styling */
.transcript-text.interim {
    opacity: 0.7;
    font-style: italic;
}

/* Footer */
footer {
    margin-top: 30px;
    padding: 20px 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.instructions {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.error-message {
    background: rgba(255, 82, 82, 0.2);
    color: var(--error-color);
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 15px;
}

/* Responsive design */
@media (max-width: 900px) {
    .dual-panel {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .speaker-panel {
        padding: 25px;
    }

    h1 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }

    header {
        flex-direction: column;
        gap: 15px;
    }

    .ptt-button {
        padding: 25px 15px;
    }
}

/* Audio playing indicator */
.speaker-panel.audio-playing {
    box-shadow: 0 0 30px rgba(0, 200, 83, 0.3);
}

/* Recording indicator pulse animation */
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(245, 87, 108, 0.7); }
    70% { box-shadow: 0 0 0 20px rgba(245, 87, 108, 0); }
    100% { box-shadow: 0 0 0 0 rgba(245, 87, 108, 0); }
}

.ptt-button.active {
    animation: pulse 1.5s infinite;
}

/* Conversation History */
.conversation-history {
    margin-top: 40px;
    background: var(--panel-bg);
    border-radius: 24px;
    padding: 30px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.conversation-history h2 {
    text-align: center;
    margin-bottom: 20px;
    font-weight: 400;
    font-size: 1.3rem;
    color: var(--text-secondary);
}

.conversation-list {
    max-height: 400px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 10px;
}

.conversation-list:empty::after {
    content: "Translations will appear here...";
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: 40px;
}

.conversation-item {
    padding: 15px 20px;
    border-radius: 16px;
    background: rgba(0, 0, 0, 0.2);
    max-width: 85%;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.conversation-item.speaker-a {
    align-self: flex-start;
    border-left: 4px solid var(--primary-color);
}

.conversation-item.speaker-b {
    align-self: flex-end;
    border-right: 4px solid var(--secondary-color);
    border-left: none;
}

.conversation-item .speaker-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.conversation-item .original-text {
    font-size: 1rem;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.conversation-item .translated-text {
    font-size: 1rem;
    color: var(--success-color);
}

.conversation-item .text-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 4px;
}

/* Scrollbar styling for conversation list */
.conversation-list::-webkit-scrollbar {
    width: 8px;
}

.conversation-list::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.conversation-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.conversation-list::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}