:root {
    --bg-color: #0b0f19;
    --card-bg: rgba(22, 30, 49, 0.85);
    --modal-bg: rgba(15, 23, 42, 0.95);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-purple: #8b5cf6;
    --accent-red: #ef4444;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background: radial-gradient(circle at top left, #1e1b4b, #0b0f19 60%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 1rem;
}

.container {
    width: 100%;
    max-width: 920px;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* Top Navigation Header */
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.brand-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

h1 {
    font-size: 1.2rem;
    font-weight: 700;
    background: linear-gradient(to right, #ffffff, #93c5fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.8rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge.connected {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border-color: rgba(16, 185, 129, 0.3);
}

.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }

.btn-icon {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.45rem 0.85rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.12);
}

/* Call Control Card */
.call-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 1.5rem 1.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.user-info-section {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.user-avatar {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.35);
}

.user-details h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
}

.user-details p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.2rem;
}

.mic-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mic-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.mic-btn.recording {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.5);
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
    70% { box-shadow: 0 0 0 16px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.mic-btn svg { width: 26px; height: 26px; fill: currentColor; }

/* Broadcast Chat Feed Container */
.chat-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 1.75rem;
    min-height: 420px;
    max-height: 560px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.chat-block {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    animation: slideIn 0.3s ease;
}

.chat-block.mine {
    align-items: flex-end;
}

.chat-block.other {
    align-items: flex-start;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.chat-header {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chat-bubble {
    max-width: 80%;
    border-radius: 16px;
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.chat-block.mine .chat-bubble {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(37, 99, 235, 0.15));
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-bottom-right-radius: 4px;
}

.chat-block.other .chat-bubble {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.25), rgba(5, 150, 105, 0.15));
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-bottom-left-radius: 4px;
}

.src-text {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
}

.tgt-text {
    font-size: 1.1rem;
    color: #34d399;
    font-weight: 700;
}

.chat-block.mine .tgt-text {
    color: #93c5fd;
}

.live-preview {
    font-size: 1rem;
    color: #60a5fa;
    font-style: italic;
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.placeholder {
    color: var(--text-secondary);
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 320px;
    gap: 1rem;
    opacity: 0.5;
}

/* Onboarding Join Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-card {
    background: var(--modal-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.25rem;
    width: 100%;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
    animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header h2 {
    font-size: 1.4rem;
    font-weight: 800;
    background: linear-gradient(to right, #ffffff, #93c5fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modal-header p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input, .form-group select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    color: var(--text-primary);
    padding: 0.85rem 1rem;
    font-size: 1rem;
    outline: none;
    transition: all 0.2s ease;
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

.btn-submit {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
    border: none;
    padding: 0.95rem;
    border-radius: 14px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
    transition: all 0.2s ease;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(59, 130, 246, 0.5);
}