/* ========================================
   PREMIUM CHAT - AI Trading Assistant
   Glassmorphism Design with Cyan Accents
   ======================================== */

/* Container fills the page */
.premium-chat {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-height: 100vh;
    background: linear-gradient(180deg, #0a0e17 0%, #0d1520 50%, #111a28 100%);
    color: var(--text-primary, #FFFFFF);
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
}

/* ========================================
   HEADER
   ======================================== */

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, rgba(0, 50, 100, 0.5) 0%, rgba(0, 80, 150, 0.4) 100%);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(0, 150, 255, 0.3);
    box-shadow: 0 0 40px rgba(0, 100, 255, 0.2);
}

.chat-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Hamburger Menu Button */
.hamburger-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    padding: 8px;
    transition: background 0.2s ease;
}

.hamburger-btn:hover {
    background: rgba(0, 207, 255, 0.1);
}

.hamburger-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--accent-cyan, #00cfff);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.hamburger-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.hamburger-btn.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

.chat-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(0, 207, 255, 0.2), rgba(0, 100, 200, 0.3));
    border: 2px solid rgba(0, 207, 255, 0.5);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(0, 207, 255, 0.3);
}

.chat-avatar svg {
    width: 28px;
    height: 28px;
    color: var(--accent-cyan, #00cfff);
}

.chat-header-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.chat-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(90deg, #00cfff, #0099ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.chat-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: #FFFFFF;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 10px #4ade80;
    animation: pulse 2s infinite;
}

.status-indicator.offline {
    background: #ef4444;
    box-shadow: 0 0 10px #ef4444;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.chat-header-right {
    display: flex;
    gap: 0.5rem;
}

.chat-header-btn {
    min-width: 44px;
    min-height: 44px;
    border: 1px solid rgba(0, 150, 255, 0.3);
    background: rgba(0, 50, 100, 0.3);
    border-radius: 10px;
    color: var(--text-secondary, #9DA3A8);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.chat-header-btn:hover {
    border-color: var(--accent-cyan, #00cfff);
    color: var(--accent-cyan, #00cfff);
    background: rgba(0, 100, 255, 0.2);
    box-shadow: 0 0 15px rgba(0, 150, 255, 0.3);
}

.chat-header-btn.active {
    border-color: var(--accent-cyan, #00cfff);
    color: var(--accent-cyan, #00cfff);
    background: rgba(0, 150, 255, 0.3);
}

.chat-header-btn svg {
    width: 20px;
    height: 20px;
}

/* Social & Wallet Buttons */
.chat-header-btn.social-btn {
    text-decoration: none;
}

.chat-header-btn.social-btn:hover {
    color: #00cfff;
}

.chat-header-btn.wallet-btn {
    width: auto;
    padding: 0 12px;
    gap: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 500;
}

.chat-header-btn.wallet-btn .wallet-text {
    color: inherit;
}

.chat-header-btn.wallet-btn.connected {
    border-color: #4ade80;
    color: #4ade80;
}

.chat-header-btn.wallet-btn.connected:hover {
    border-color: #4ade80;
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.3);
}

/* Auth Buttons (Login/Signup) */
.chat-header-btn.auth-btn {
    width: auto;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    text-decoration: none;
}

.chat-header-btn.auth-btn svg {
    width: 16px;
    height: 16px;
}

.auth-text {
    font-weight: 500;
}

/* Login Button - Cyan */
.chat-header-btn.login-btn {
    background: linear-gradient(135deg, rgba(0, 150, 255, 0.15), rgba(0, 100, 200, 0.25));
    border: 1px solid rgba(0, 150, 255, 0.3);
}

.chat-header-btn.login-btn:hover {
    background: linear-gradient(135deg, rgba(0, 150, 255, 0.25), rgba(0, 100, 200, 0.35));
    border-color: rgba(0, 150, 255, 0.5);
    box-shadow: 0 0 15px rgba(0, 150, 255, 0.3);
}

.chat-header-btn.login-btn svg {
    stroke: #00cfff;
}

.chat-header-btn.login-btn .auth-text {
    color: #00cfff;
}

/* Signup Button - Green */
.chat-header-btn.signup-btn {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.15), rgba(34, 197, 94, 0.25));
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.chat-header-btn.signup-btn:hover {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.25), rgba(34, 197, 94, 0.35));
    border-color: rgba(74, 222, 128, 0.5);
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.3);
}

.chat-header-btn.signup-btn svg {
    stroke: #4ade80;
}

.chat-header-btn.signup-btn .auth-text {
    color: #4ade80;
}

/* User Info (logged in state) */
.chat-header-btn.user-info {
    width: auto;
    gap: 8px;
}

.chat-header-btn.user-info svg {
    width: 18px;
    height: 18px;
    stroke: #00cfff;
}

.chat-header-btn.user-info .username {
    color: #00cfff;
    font-size: 12px;
    font-weight: 500;
}

/* Logout Button */
.chat-header-btn.logout-btn {
    width: auto;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(220, 38, 38, 0.25));
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.chat-header-btn.logout-btn:hover {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.25), rgba(220, 38, 38, 0.35));
    border-color: rgba(239, 68, 68, 0.5);
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.3);
}

.chat-header-btn.logout-btn svg {
    stroke: #ef4444;
}

.chat-header-btn.logout-btn .auth-text {
    color: #ef4444;
}

/* Mobile adjustments for auth buttons */
@media (max-width: 480px) {
    .chat-header-btn.auth-btn .auth-text,
    .chat-header-btn.logout-btn .auth-text {
        display: none;
    }

    .chat-header-btn.auth-btn,
    .chat-header-btn.logout-btn {
        padding: 6px 8px;
    }

    /* Fix wallet button visibility on mobile - EVE-1383 */
    /* Minimum 44px for iOS touch targets */
    .chat-header-btn.wallet-btn {
        width: 44px !important;
        height: 44px !important;
        padding: 6px !important;
        min-width: 44px;
        flex-shrink: 0;
    }

    .chat-header-btn.wallet-btn span {
        display: none;
    }

    .chat-header-btn.wallet-btn svg {
        width: 16px;
        height: 16px;
    }
}

/* ========================================
   MESSAGES AREA
   ======================================== */

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    scroll-behavior: smooth;
}

.messages-container {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: rgba(0, 50, 100, 0.2);
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: rgba(0, 150, 255, 0.3);
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 150, 255, 0.5);
}

/* ========================================
   WELCOME SECTION
   ======================================== */

.welcome-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem 1.5rem;
    min-height: 50vh;
}

.welcome-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 1.5rem;
}

.welcome-icon svg {
    width: 100%;
    height: 100%;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.welcome-title {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    background: linear-gradient(90deg, #00cfff, #0099ff, #00cfff);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.welcome-subtitle {
    font-size: 1rem;
    color: #FFFFFF;
    margin: 0 0 120px 0;
}

.welcome-tagline {
    font-size: 0.95rem;
    color: var(--accent-cyan, #00cfff);
    margin: 0 auto 2rem auto;
    max-width: 500px;
    line-height: 1.5;
    font-style: italic;
    opacity: 0.9;
}

.suggested-prompts {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    max-width: 700px;
}

.suggested-prompt {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: linear-gradient(
        145deg,
        rgba(0, 40, 70, 0.6) 0%,
        rgba(0, 70, 100, 0.45) 50%,
        rgba(0, 40, 70, 0.6) 100%
    );
    border: 1px solid rgba(0, 180, 220, 0.4);
    border-radius: 12px;
    color: var(--text-primary, #FFFFFF);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 100, 150, 0.25), inset 0 1px 1px rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.suggested-prompt::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 200, 255, 0.1), transparent);
    transition: left 0.5s ease;
    pointer-events: none;
}

.suggested-prompt:hover::before {
    left: 100%;
}

.suggested-prompt:hover {
    border-color: rgba(0, 200, 255, 0.6);
    background: linear-gradient(
        145deg,
        rgba(0, 55, 90, 0.7) 0%,
        rgba(0, 90, 130, 0.55) 50%,
        rgba(0, 55, 90, 0.7) 100%
    );
    box-shadow: 0 0 35px rgba(0, 160, 220, 0.35), inset 0 1px 1px rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.suggested-prompt svg {
    width: 16px;
    height: 16px;
    color: var(--accent-cyan, #00cfff);
    opacity: 0;
    transition: opacity 0.2s;
}

.suggested-prompt:hover svg {
    opacity: 1;
}

/* ========================================
   MESSAGES
   ======================================== */

.message {
    display: flex;
    gap: 1rem;
    max-width: 100%;
    animation: fadeIn 0.3s ease-out;
}

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

.message-user {
    flex-direction: row-reverse;
}

.message-user .message-content {
    background: linear-gradient(135deg, rgba(0, 150, 255, 0.3), rgba(0, 100, 200, 0.2));
    border: 1px solid rgba(0, 150, 255, 0.4);
    border-radius: 16px 16px 4px 16px;
    margin-left: auto;
}

.message-assistant .message-content {
    background: linear-gradient(135deg, rgba(30, 40, 60, 0.6), rgba(20, 30, 50, 0.5));
    border: 1px solid rgba(100, 120, 150, 0.3);
    border-radius: 16px 16px 16px 4px;
}

.message-avatar {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, rgba(0, 207, 255, 0.2), rgba(0, 100, 200, 0.3));
    border: 1px solid rgba(0, 207, 255, 0.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.message-avatar svg {
    width: 20px;
    height: 20px;
    color: var(--accent-cyan, #00cfff);
}

.message-content {
    flex: 1;
    min-width: 0;
    padding: 1rem;
    backdrop-filter: blur(10px);
}

.message-text {
    line-height: 1.6;
    word-wrap: break-word;
}

.message-text code {
    background: rgba(0, 0, 0, 0.3);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 0.875em;
    color: var(--accent-cyan, #00cfff);
}

.message-text pre {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(0, 150, 255, 0.2);
    border-radius: 8px;
    padding: 1rem;
    overflow-x: auto;
    margin: 0.5rem 0;
}

.message-text pre code {
    background: none;
    padding: 0;
}

.message-text a {
    color: var(--accent-cyan, #00cfff);
    text-decoration: none;
    border-bottom: 1px dashed rgba(0, 207, 255, 0.5);
}

.message-text a:hover {
    border-bottom-style: solid;
}

.message-text strong {
    color: #FFFFFF;
}

.message-time {
    font-size: 0.7rem;
    color: var(--text-dim, #6B7280);
    margin-top: 0.5rem;
    text-align: right;
}

.message-user .message-time {
    text-align: left;
}

/* Streaming/typing indicator */
.typing-indicator {
    display: inline-flex;
    gap: 4px;
    padding: 0.5rem 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--accent-cyan, #00cfff);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }
.typing-indicator span:nth-child(3) { animation-delay: 0s; }

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Error state */
.message.error .message-content {
    border-color: rgba(255, 80, 0, 0.5);
}

/* ========================================
   EMBEDS
   ======================================== */

.message-embeds {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.embed {
    background: rgba(0, 30, 60, 0.5);
    border: 1px solid rgba(0, 150, 255, 0.3);
    border-radius: 12px;
    overflow: hidden;
}

/* Market Card Embed */
.embed-market-card {
    padding: 1rem;
}

.market-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.market-status {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    text-transform: uppercase;
    font-weight: 600;
}

.market-status.active {
    background: rgba(74, 222, 128, 0.2);
    color: #4ade80;
}

.market-status.pending {
    background: rgba(250, 204, 21, 0.2);
    color: #facc15;
}

.market-status.completed {
    background: rgba(156, 163, 175, 0.2);
    color: #9ca3af;
}

.market-pool {
    font-size: 0.875rem;
    color: var(--accent-cyan, #00cfff);
    font-weight: 600;
}

.market-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
    color: #FFFFFF;
}

.market-card-description {
    font-size: 0.875rem;
    color: var(--text-secondary, #9DA3A8);
    margin: 0 0 0.75rem 0;
    line-height: 1.5;
}

.market-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-dim, #6B7280);
}

.market-perpetual {
    background: rgba(170, 85, 255, 0.2);
    color: #aa55ff;
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
}

/* Price Chart Embed */
.embed-price-chart {
    background: rgba(0, 20, 40, 0.6);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(0, 150, 255, 0.2);
}

.chart-symbol {
    font-weight: 600;
    color: var(--accent-cyan, #00cfff);
}

.chart-timeframe {
    font-size: 0.75rem;
    color: var(--text-secondary, #9DA3A8);
}

.chart-placeholder {
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
}

.chart-placeholder img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* ========================================
   TRADING ACTIONS
   ======================================== */

.message-actions {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.action-card {
    background: linear-gradient(135deg, rgba(0, 50, 100, 0.4), rgba(0, 30, 60, 0.3));
    border: 1px solid rgba(0, 150, 255, 0.4);
    border-radius: 12px;
    padding: 1rem;
    transition: all 0.2s;
}

.action-card.action-buy {
    border-color: rgba(74, 222, 128, 0.4);
}

.action-card.action-sell {
    border-color: rgba(255, 80, 0, 0.4);
}

.action-card.executed {
    border-color: rgba(74, 222, 128, 0.6);
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.1), rgba(0, 30, 60, 0.3));
}

.action-card.cancelled,
.action-card.error {
    opacity: 0.6;
}

.action-header {
    margin-bottom: 0.75rem;
}

.action-type {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary, #9DA3A8);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.action-details {
    display: grid;
    gap: 0.375rem;
    font-size: 0.875rem;
    color: var(--text-primary, #FFFFFF);
    margin-bottom: 1rem;
}

.action-details strong {
    color: var(--text-secondary, #9DA3A8);
}

.action-buttons {
    display: flex;
    gap: 0.75rem;
}

.action-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.action-confirm {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.3), rgba(34, 197, 94, 0.2));
    border: 1px solid rgba(74, 222, 128, 0.5);
    color: #4ade80;
}

.action-confirm:hover {
    background: rgba(74, 222, 128, 0.4);
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.3);
}

.action-buy .action-confirm {
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.3), rgba(34, 197, 94, 0.2));
    color: #4ade80;
}

.action-sell .action-confirm {
    background: linear-gradient(135deg, rgba(255, 80, 0, 0.3), rgba(200, 60, 0, 0.2));
    border-color: rgba(255, 80, 0, 0.5);
    color: #FF5000;
}

.action-cancel {
    background: rgba(100, 116, 139, 0.2);
    border: 1px solid rgba(100, 116, 139, 0.4);
    color: #94a3b8;
}

.action-cancel:hover {
    background: rgba(100, 116, 139, 0.3);
}

.action-success {
    color: #4ade80;
    font-weight: 600;
}

.action-cancelled {
    color: #94a3b8;
}

.action-error {
    color: #ef4444;
}

/* ========================================
   INPUT AREA
   ======================================== */

.chat-input-area {
    padding: 1rem 1.5rem 1.5rem;
    background: linear-gradient(0deg, rgba(0, 30, 60, 0.8) 0%, transparent 100%);
    margin-top: 0;
    position: relative;
    z-index: 10;
}

.input-container {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    gap: 0.75rem;
    background: linear-gradient(135deg, rgba(0, 50, 100, 0.5), rgba(0, 80, 150, 0.4));
    border: 1px solid rgba(0, 150, 255, 0.4);
    border-radius: 16px;
    padding: 0.75rem 1rem;
    backdrop-filter: blur(15px);
    box-shadow: 0 0 30px rgba(0, 100, 255, 0.2);
    transition: all 0.2s;
}

.input-container:focus-within {
    border-color: var(--accent-cyan, #00cfff);
    box-shadow: 0 0 40px rgba(0, 150, 255, 0.3);
}

.chat-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary, #FFFFFF);
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 1rem;
    line-height: 1.5;
    resize: none;
    outline: none;
    max-height: 200px;
}

.chat-input::placeholder {
    color: var(--text-dim, #6B7280);
}

.input-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: space-between;
    gap: 0.5rem;
}

.char-count {
    font-size: 0.7rem;
    color: var(--text-dim, #6B7280);
}

.send-btn {
    width: 40px;
    height: 40px;
    background: linear-gradient(
        145deg,
        rgba(0, 40, 70, 0.6) 0%,
        rgba(0, 70, 100, 0.45) 50%,
        rgba(0, 40, 70, 0.6) 100%
    );
    border: 1px solid rgba(0, 180, 220, 0.4);
    border-radius: 10px;
    color: var(--accent-cyan, #00cfff);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 100, 150, 0.25), inset 0 1px 1px rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.send-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 200, 255, 0.15), transparent);
    transition: left 0.5s ease;
    pointer-events: none;
}

.send-btn:hover:not(:disabled)::before {
    left: 100%;
}

.send-btn:hover:not(:disabled) {
    background: linear-gradient(
        145deg,
        rgba(0, 55, 90, 0.7) 0%,
        rgba(0, 90, 130, 0.55) 50%,
        rgba(0, 55, 90, 0.7) 100%
    );
    border-color: rgba(0, 200, 255, 0.6);
    box-shadow: 0 0 35px rgba(0, 160, 220, 0.35), inset 0 1px 1px rgba(255, 255, 255, 0.08);
    transform: scale(1.05);
}

.send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.send-btn svg {
    width: 20px;
    height: 20px;
}

.input-footer {
    max-width: 900px;
    margin: 0.75rem auto 0;
    display: flex;
    justify-content: space-between;
    font-size: 0.7rem;
    color: var(--text-dim, #6B7280);
}

.powered-by {
    opacity: 0.7;
}

.keyboard-hint {
    opacity: 0.5;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
    .chat-header {
        padding: 0.5rem 1rem;
    }

    .chat-avatar {
        width: 36px;
        height: 36px;
    }

    .chat-avatar svg {
        width: 20px;
        height: 20px;
    }

    .chat-title {
        font-size: 1rem;
    }

    .chat-messages {
        padding: 0.5rem;
    }

    .welcome-section {
        padding: 1rem 1rem;
        min-height: auto;
    }

    .welcome-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 0.75rem;
    }

    .welcome-title {
        font-size: 1.25rem;
        margin-bottom: 0.25rem;
    }

    .welcome-subtitle {
        font-size: 0.75rem;
        margin: 0 0 1rem 0;
    }

    .welcome-tagline {
        font-size: 0.8rem;
        max-width: 90%;
    }

    .suggested-prompts {
        gap: 0.5rem;
    }

    .suggested-prompt {
        padding: 0.625rem 0.875rem;
        font-size: 0.8rem;
    }

    .message {
        gap: 0.75rem;
    }

    .message-avatar {
        width: 32px;
        height: 32px;
    }

    .message-content {
        padding: 0.75rem;
    }

    .chat-input-area {
        padding: 0.75rem 1rem 1rem;
        margin-top: 0;
    }

    .input-container {
        padding: 0.5rem 0.75rem;
        border-radius: 12px;
    }

    .input-footer {
        flex-direction: column;
        align-items: center;
        gap: 0.25rem;
    }

    .keyboard-hint {
        display: none;
    }
}

@media (max-width: 480px) {
    .chat-header {
        padding: 0.4rem 0.75rem;
    }

    .chat-header-right {
        gap: 0.15rem;
        flex-wrap: wrap;
        justify-content: flex-end;
        overflow: visible;
    }

    .chat-header-btn {
        width: 32px;
        height: 32px;
        flex-shrink: 0;
    }

    .chat-header-btn svg {
        width: 16px;
        height: 16px;
    }

    .welcome-section {
        padding: 0.5rem 0.75rem;
    }

    .welcome-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 0.5rem;
    }

    .welcome-title {
        font-size: 1.1rem;
        margin-bottom: 0.15rem;
    }

    .welcome-subtitle {
        font-size: 0.7rem;
        margin: 0 0 0.75rem 0;
    }

    .chat-input-area {
        padding: 0.5rem 0.75rem 0.75rem;
        margin-top: 0;
    }

    .message-user .message-avatar {
        display: none;
    }

    .message-user {
        gap: 0;
    }

    .message-user .message-content {
        margin-left: 0;
    }
}

/* ========================================
   DARK MODE ENHANCEMENTS
   ======================================== */

@media (prefers-color-scheme: dark) {
    .premium-chat {
        background: linear-gradient(180deg, #050810 0%, #0a0e17 50%, #0d1520 100%);
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message {
    animation: slideUp 0.3s ease-out;
}

/* ========================================
   VOICE INPUT
   ======================================== */

/* Voice button in header */
.voice-btn {
    position: relative;
    overflow: hidden;
}

.voice-btn .mic-icon {
    transition: all 0.2s;
}

.voice-btn .voice-waves {
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 2px;
    opacity: 0;
    transition: opacity 0.2s;
}

.voice-btn .voice-waves span {
    width: 3px;
    height: 8px;
    background: var(--accent-cyan, #00cfff);
    border-radius: 2px;
    animation: voiceWave 0.5s ease-in-out infinite;
}

.voice-btn .voice-waves span:nth-child(1) { animation-delay: 0s; height: 6px; }
.voice-btn .voice-waves span:nth-child(2) { animation-delay: 0.1s; height: 10px; }
.voice-btn .voice-waves span:nth-child(3) { animation-delay: 0.2s; height: 8px; }
.voice-btn .voice-waves span:nth-child(4) { animation-delay: 0.1s; height: 10px; }
.voice-btn .voice-waves span:nth-child(5) { animation-delay: 0s; height: 6px; }

@keyframes voiceWave {
    0%, 100% { transform: scaleY(0.5); }
    50% { transform: scaleY(1); }
}

.voice-btn.listening .mic-icon,
.voice-btn.speaking .mic-icon {
    opacity: 0;
    transform: translateY(-10px);
}

.voice-btn.listening .voice-waves,
.voice-btn.speaking .voice-waves {
    opacity: 1;
}

.voice-btn.listening {
    border-color: var(--accent-cyan, #00cfff);
    background: rgba(0, 207, 255, 0.2);
    box-shadow: 0 0 20px rgba(0, 207, 255, 0.4);
}

.voice-btn.speaking {
    border-color: #4ade80;
    background: rgba(74, 222, 128, 0.2);
    box-shadow: 0 0 20px rgba(74, 222, 128, 0.4);
}

.voice-btn.speaking .voice-waves span {
    background: #4ade80;
}

/* Input area voice button */
.input-voice-btn {
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid rgba(0, 150, 255, 0.3);
    border-radius: 8px;
    color: var(--text-secondary, #9DA3A8);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.input-voice-btn svg {
    width: 18px;
    height: 18px;
}

.input-voice-btn:hover {
    border-color: var(--accent-cyan, #00cfff);
    color: var(--accent-cyan, #00cfff);
    background: rgba(0, 207, 255, 0.1);
}

.input-voice-btn.listening {
    border-color: var(--accent-cyan, #00cfff);
    color: var(--accent-cyan, #00cfff);
    background: rgba(0, 207, 255, 0.2);
    animation: voicePulse 1.5s ease-in-out infinite;
}

.input-voice-btn.speaking {
    border-color: #4ade80;
    color: #4ade80;
    background: rgba(74, 222, 128, 0.2);
    animation: voicePulse 1.5s ease-in-out infinite;
}

@keyframes voicePulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 207, 255, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(0, 207, 255, 0);
    }
}

/* Voice overlay */
.voice-input-overlay {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(0, 30, 60, 0.95), rgba(0, 50, 100, 0.9));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 207, 255, 0.3);
    border-bottom: none;
    border-radius: 16px 16px 0 0;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    z-index: 10;
    animation: slideUp 0.3s ease-out;
}

.voice-visualizer {
    position: relative;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.voice-circle {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(0, 207, 255, 0.3), rgba(0, 150, 255, 0.2));
    border: 2px solid var(--accent-cyan, #00cfff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    animation: voiceCirclePulse 1.5s ease-in-out infinite;
}

.voice-circle svg {
    width: 28px;
    height: 28px;
    color: var(--accent-cyan, #00cfff);
}

@keyframes voiceCirclePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.voice-ripples {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.voice-ripples span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    margin: -30px 0 0 -30px;
    border: 2px solid rgba(0, 207, 255, 0.5);
    border-radius: 50%;
    animation: ripple 2s ease-out infinite;
}

.voice-ripples span:nth-child(1) { animation-delay: 0s; }
.voice-ripples span:nth-child(2) { animation-delay: 0.5s; }
.voice-ripples span:nth-child(3) { animation-delay: 1s; }

@keyframes ripple {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

.voice-input-overlay.speaking .voice-circle {
    border-color: #4ade80;
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.3), rgba(34, 197, 94, 0.2));
}

.voice-input-overlay.speaking .voice-circle svg {
    color: #4ade80;
}

.voice-input-overlay.speaking .voice-ripples span {
    border-color: rgba(74, 222, 128, 0.5);
}

.voice-transcript {
    font-size: 1.125rem;
    color: var(--text-secondary, #9DA3A8);
    text-align: center;
    min-height: 1.5em;
    transition: all 0.2s;
}

.voice-transcript.has-text {
    color: var(--text-primary, #FFFFFF);
    font-weight: 500;
}

.voice-transcript.error {
    color: #ef4444;
}

.voice-hint {
    font-size: 0.75rem;
    color: var(--text-dim, #6B7280);
    text-align: center;
}

/* Make chat-input-area position relative for overlay */
.chat-input-area {
    position: relative;
}

/* Mobile voice adjustments */
@media (max-width: 768px) {
    .voice-input-overlay {
        padding: 1.5rem;
    }

    .voice-visualizer {
        width: 60px;
        height: 60px;
    }

    .voice-circle {
        width: 50px;
        height: 50px;
    }

    .voice-circle svg {
        width: 24px;
        height: 24px;
    }

    .voice-ripples span {
        width: 50px;
        height: 50px;
        margin: -25px 0 0 -25px;
    }

    .voice-transcript {
        font-size: 1rem;
    }
}

/* ========================================
   TEXT-TO-SPEECH
   ======================================== */

/* TTS button */
.tts-btn {
    position: relative;
}

.tts-btn .speaker-icon,
.tts-btn .speaker-muted-icon {
    transition: all 0.2s;
}

.tts-btn .sound-waves {
    opacity: 0.6;
    transition: opacity 0.2s;
}

/* TTS enabled state */
.tts-btn.active {
    border-color: var(--accent-cyan, #00cfff);
    color: var(--accent-cyan, #00cfff);
    background: rgba(0, 207, 255, 0.15);
}

.tts-btn.active .sound-waves {
    opacity: 1;
    animation: soundWavePulse 1s ease-in-out infinite;
}

@keyframes soundWavePulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* TTS speaking state */
.tts-btn.speaking {
    border-color: #4ade80;
    color: #4ade80;
    background: rgba(74, 222, 128, 0.2);
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.3);
}

.tts-btn.speaking .sound-waves {
    animation: soundWaveActive 0.4s ease-in-out infinite alternate;
}

@keyframes soundWaveActive {
    0% {
        opacity: 0.4;
        transform: translateX(0);
    }
    100% {
        opacity: 1;
        transform: translateX(2px);
    }
}

/* Muted state styling */
.tts-btn:not(.active) {
    opacity: 0.7;
}

.tts-btn:not(.active):hover {
    opacity: 1;
}

/* TTS indicator on messages (optional) */
.message-assistant .message-content.speaking {
    border-color: rgba(74, 222, 128, 0.5);
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.2);
}

/* TTS Speaking Bar */
.tts-speaking-bar {
    position: absolute;
    bottom: 100%;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.15), rgba(34, 197, 94, 0.1));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(74, 222, 128, 0.4);
    border-bottom: none;
    border-radius: 12px 12px 0 0;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    z-index: 10;
    animation: slideUp 0.2s ease-out;
}

.tts-speaking-indicator {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.tts-waves {
    display: flex;
    align-items: center;
    gap: 3px;
    height: 20px;
}

.tts-waves span {
    width: 3px;
    background: #4ade80;
    border-radius: 2px;
    animation: ttsWave 0.6s ease-in-out infinite;
}

.tts-waves span:nth-child(1) { height: 8px; animation-delay: 0s; }
.tts-waves span:nth-child(2) { height: 14px; animation-delay: 0.1s; }
.tts-waves span:nth-child(3) { height: 20px; animation-delay: 0.2s; }
.tts-waves span:nth-child(4) { height: 14px; animation-delay: 0.3s; }
.tts-waves span:nth-child(5) { height: 8px; animation-delay: 0.4s; }

@keyframes ttsWave {
    0%, 100% { transform: scaleY(0.5); opacity: 0.6; }
    50% { transform: scaleY(1); opacity: 1; }
}

.tts-speaking-text {
    color: #4ade80;
    font-size: 0.875rem;
    font-weight: 500;
}

.tts-stop-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.5);
    border-radius: 8px;
    color: #ef4444;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.tts-stop-btn svg {
    width: 14px;
    height: 14px;
}

.tts-stop-btn:hover {
    background: rgba(239, 68, 68, 0.3);
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.3);
    transform: scale(1.02);
}

.tts-stop-btn:active {
    transform: scale(0.98);
}

/* Mobile adjustments for speaking bar */
@media (max-width: 768px) {
    .tts-speaking-bar {
        padding: 0.625rem 1rem;
    }

    .tts-speaking-text {
        font-size: 0.8rem;
    }

    .tts-stop-btn {
        padding: 0.375rem 0.75rem;
        font-size: 0.8rem;
    }

    .tts-stop-btn span {
        display: none;
    }

    .tts-stop-btn svg {
        width: 16px;
        height: 16px;
    }
}

/* TTS Controls Container */
.tts-controls {
    position: relative;
    display: flex;
    gap: 0.25rem;
}

/* TTS Settings Button */
.tts-settings-btn {
    width: 36px !important;
    height: 36px !important;
}

.tts-settings-btn svg {
    width: 16px !important;
    height: 16px !important;
}

/* TTS Settings Panel */
.tts-settings-panel {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    width: 280px;
    background: linear-gradient(135deg, rgba(10, 20, 40, 0.98), rgba(0, 30, 60, 0.95));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 150, 255, 0.4);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 100, 255, 0.2);
    z-index: 100;
    overflow: hidden;
    animation: settingsPanelSlide 0.2s ease-out;
}

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

.tts-settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 1rem;
    background: rgba(0, 100, 200, 0.15);
    border-bottom: 1px solid rgba(0, 150, 255, 0.2);
}

.tts-settings-header span {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--accent-cyan, #00cfff);
}

.tts-settings-close {
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    color: var(--text-secondary, #9DA3A8);
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.tts-settings-close:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.15);
}

.tts-setting-group {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid rgba(0, 150, 255, 0.1);
}

.tts-setting-group:last-of-type {
    border-bottom: none;
}

.tts-setting-group label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary, #9DA3A8);
    margin-bottom: 0.5rem;
}

.tts-setting-group label span {
    color: var(--accent-cyan, #00cfff);
    font-weight: 500;
}

/* Voice Select Dropdown */
.tts-select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: rgba(0, 50, 100, 0.4);
    border: 1px solid rgba(0, 150, 255, 0.3);
    border-radius: 8px;
    color: var(--text-primary, #FFFFFF);
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 0.8rem;
    cursor: pointer;
    outline: none;
    transition: all 0.2s;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2300cfff' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.tts-select:hover {
    border-color: var(--accent-cyan, #00cfff);
}

.tts-select:focus {
    border-color: var(--accent-cyan, #00cfff);
    box-shadow: 0 0 10px rgba(0, 207, 255, 0.2);
}

.tts-select option,
.tts-select optgroup {
    background: #0d1520;
    color: var(--text-primary, #FFFFFF);
}

.tts-select optgroup {
    font-weight: 600;
    color: var(--accent-cyan, #00cfff);
}

/* Speed/Pitch Sliders */
.tts-slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(0, 50, 100, 0.4);
    border-radius: 3px;
    outline: none;
    transition: all 0.2s;
}

.tts-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-cyan, #00cfff), #0099ff);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 207, 255, 0.4);
    transition: all 0.2s;
}

.tts-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 15px rgba(0, 207, 255, 0.6);
}

.tts-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--accent-cyan, #00cfff), #0099ff);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px rgba(0, 207, 255, 0.4);
}

.tts-slider::-moz-range-track {
    background: rgba(0, 50, 100, 0.4);
    border-radius: 3px;
    height: 6px;
}

/* Test Voice Button */
.tts-test-btn {
    display: block;
    width: calc(100% - 2rem);
    margin: 0.875rem 1rem;
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, rgba(0, 150, 255, 0.25), rgba(0, 100, 200, 0.2));
    border: 1px solid rgba(0, 150, 255, 0.4);
    border-radius: 8px;
    color: var(--accent-cyan, #00cfff);
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.tts-test-btn:hover {
    background: rgba(0, 150, 255, 0.35);
    box-shadow: 0 0 15px rgba(0, 150, 255, 0.3);
    transform: translateY(-1px);
}

.tts-test-btn:active {
    transform: translateY(0);
}

/* Mobile adjustments for settings panel */
@media (max-width: 480px) {
    .tts-settings-panel {
        width: 260px;
        right: -60px;
    }

    .tts-settings-header,
    .tts-setting-group {
        padding: 0.75rem;
    }

    .tts-test-btn {
        width: calc(100% - 1.5rem);
        margin: 0.75rem;
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}