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

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-card: #16161f;
    --bg-card-hover: #1e1e2a;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent-primary: #8b5cf6;
    --accent-secondary: #a78bfa;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #a855f7 50%, #d946ef 100%);
    --border-color: #2a2a3a;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --sidebar-width: 280px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
}

.hidden {
    display: none !important;
}

/* App Container */
.app-container {
    display: flex;
    height: 100vh;
    width: 100%;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px 16px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.badge {
    background: var(--accent-gradient);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 12px;
}

/* Wallet Section */
.wallet-section {
    margin-bottom: 24px;
}

.wallet-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.wallet-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

.connected-wallet {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--accent-primary);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
}

.connected-wallet svg {
    color: var(--accent-primary);
}

.disconnect-btn {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    padding: 0 4px;
    transition: color 0.2s;
}

.disconnect-btn:hover {
    color: var(--error-color);
}

/* Chat History */
.chat-history {
    flex: 1;
    overflow-y: auto;
}

.chat-history-header {
    margin-bottom: 16px;
}

.chat-history-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.chat-history-header .subtitle {
    font-size: 12px;
    color: var(--text-muted);
}

.no-chats {
    color: var(--text-muted);
    font-size: 13px;
    padding: 16px;
    text-align: center;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.chat-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-item {
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
}

.chat-item:hover {
    background: var(--bg-card-hover);
}

.chat-item-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-item-date {
    font-size: 12px;
    color: var(--text-muted);
}

/* Sidebar Footer */
.sidebar-footer {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

#userName {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
    overflow: hidden;
}

/* Header */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

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

.credits-display {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

.credits-display svg {
    color: var(--accent-primary);
}

#creditsAmount {
    font-weight: 600;
    color: var(--text-primary);
}

.add-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 20px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.add-btn:hover {
    opacity: 0.9;
}

/* Chat Area */
.chat-area {
    flex: 1;
    overflow-y: auto;
    padding: 32px 24px;
    display: flex;
    flex-direction: column;
}

/* Welcome Screen */
.welcome-screen {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding-top: 40px;
}

.welcome-screen h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #ffffff 0%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

/* Feature Cards */
.feature-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px 20px;
    text-align: left;
    cursor: pointer;
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--accent-primary);
}

.feature-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Quick Actions */
.quick-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.quick-action-btn {
    padding: 10px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quick-action-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

/* Messages Container */
.messages-container {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.message {
    display: flex;
    gap: 12px;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.user-message .message-avatar {
    background: var(--accent-gradient);
}

.ai-message .message-avatar {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.message-avatar img {
    width: 24px;
    height: 24px;
}

.message-content {
    flex: 1;
    padding: 16px;
    border-radius: 12px;
    font-size: 15px;
    line-height: 1.6;
}

.user-message .message-content {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.ai-message .message-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

/* Input Area */
.input-area {
    padding: 16px 24px 24px;
    border-top: 1px solid var(--border-color);
}

.input-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--text-muted);
}

.balance-info strong {
    color: var(--accent-primary);
}

.input-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: border-color 0.2s;
}

.input-wrapper:focus-within {
    border-color: var(--accent-primary);
}

.input-icon {
    color: var(--accent-primary);
}

#messageInput {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
}

#messageInput::placeholder {
    color: var(--text-muted);
}

.send-btn {
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 10px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s;
}

.send-btn:hover {
    opacity: 0.9;
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
    max-width: 420px;
    width: 90%;
    z-index: 1;
}

.modal-header {
    text-align: center;
    margin-bottom: 24px;
}

.modal-logo {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    margin-bottom: 16px;
}

.modal-header h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.modal-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.modal-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 20px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.phantom-btn {
    background: linear-gradient(135deg, #AB9FF2 0%, #534BB1 100%);
    color: white;
    border: none;
}

.phantom-btn:hover {
    opacity: 0.9;
}

.solflare-btn {
    background: linear-gradient(135deg, #FC822A 0%, #F15A24 100%);
    color: white;
    border: none;
}

.solflare-btn:hover {
    opacity: 0.9;
}

.guest-btn {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.guest-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

.wallet-icon {
    width: 24px;
    height: 24px;
}

.divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 8px 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    color: var(--text-muted);
    font-size: 13px;
}

/* Credits Modal */
.credits-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.credit-option {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.credit-option:hover {
    border-color: var(--accent-primary);
}

.credit-option.popular {
    border-color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.1);
}

.popular-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-gradient);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 12px;
}

.credit-amount {
    font-weight: 600;
    color: var(--text-primary);
}

.credit-price {
    color: var(--accent-primary);
    font-weight: 500;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
    .feature-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        display: none;
    }

    .feature-cards {
        grid-template-columns: 1fr;
    }

    .welcome-screen h1 {
        font-size: 32px;
    }
}

/* Loading Animation */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 8px;
}

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

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-8px); opacity: 1; }
}