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

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f7f7f8;
    --bg-sidebar: #f7f7f8;
    --bg-sidebar-hover: #e9e9eb;
    --text-primary: #2c2c2e;
    --text-secondary: #6c6c70;
    --border-color: #e4e4e7;
    --message-bot: #f0f0f0;
    --message-user: #19c37d;
    --message-user-text: #ffffff;
    --accent-color: #19c37d;
    --accent-hover: #15a56a;
    --sidebar-width: 260px;
    --header-height: 60px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
}

body.dark {
    --bg-primary: #1e1e2e;
    --bg-secondary: #2a2a3a;
    --bg-sidebar: #1a1a2a;
    --bg-sidebar-hover: #25253a;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --border-color: #3a3a4a;
    --message-bot: #2a2a3a;
    --message-user: #19c37d;
}

* {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
}

/* App Layout */
.app {
    display: flex;
    height: 100vh;
    width: 100%;
    position: relative;
}

/* Sidebar - CORRIGIDO */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    flex-shrink: 0;
    position: relative;
}

/* Estado FECHADO da sidebar */
.sidebar.closed {
    width: 0 !important;
    min-width: 0 !important;
    overflow: hidden;
    border-right: none;
    padding: 0;
}

.sidebar.closed .sidebar-header,
.sidebar.closed .sidebar-content,
.sidebar.closed .sidebar-footer {
    display: none;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.new-chat-btn {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    transition: all 0.2s;
}

.new-chat-btn:hover {
    background: var(--bg-sidebar-hover);
    border-color: var(--accent-color);
}

.sidebar-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Sidebar Toggle */
.sidebar-toggle {
    position: fixed;
    left: 16px;
    top: 16px;
    z-index: 101;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 8px 12px;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.2s;
}

.sidebar-toggle:hover {
    background: var(--bg-sidebar-hover);
}

/* Sidebar Status (ícone no header) */
.sidebar-status {
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
}

.sidebar-status:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    overflow: hidden;
    transition: margin-left 0.3s ease;
}

/* Quando sidebar está fechada, centraliza o conteúdo */
.main-content.sidebar-closed .chat-container {
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

/* Mobile */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100%;
        width: 280px !important;
        transform: translateX(-100%);
        z-index: 200;
    }
    
    .sidebar.open {
        transform: translateX(0) !important;
        width: 280px !important;
    }
    
    .sidebar.closed {
        transform: translateX(-100%) !important;
        width: 280px !important;
    }
    
    .sidebar.closed .sidebar-header,
    .sidebar.closed .sidebar-content,
    .sidebar.closed .sidebar-footer {
        display: flex;
    }
    
    .sidebar-toggle {
        display: flex;
        z-index: 201;
    }
    
    .main-header {
        padding-left: 60px;
    }
}

.new-chat-btn {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
    transition: all 0.2s;
}

.new-chat-btn:hover {
    background: var(--bg-sidebar-hover);
    border-color: var(--accent-color);
}

.sidebar-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.history-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding: 0 8px;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    color: var(--text-primary);
    position: relative;
    group: 1;
}

.history-item:hover {
    background: var(--bg-sidebar-hover);
}

.history-item.active {
    background: var(--bg-sidebar-hover);
    border-left: 3px solid var(--accent-color);
}

.history-item-main {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    overflow: hidden;
}

.history-item-main i {
    color: var(--text-secondary);
    font-size: 14px;
    flex-shrink: 0;
}

.history-item-main span {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item-actions {
    display: none;
    gap: 4px;
    align-items: center;
}

.history-item:hover .history-item-actions {
    display: flex;
}

.history-action-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 6px;
    font-size: 12px;
    transition: all 0.2s;
}

.history-action-btn:hover {
    background: var(--bg-primary);
    color: var(--accent-color);
}

.empty-history {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-secondary);
}

.empty-history i {
    font-size: 32px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.user-info i {
    font-size: 24px;
}

.settings-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s;
}

.settings-btn:hover {
    background: var(--bg-sidebar-hover);
    color: var(--text-primary);
}

/* Sidebar Toggle */
.sidebar-toggle {
    position: fixed;
    left: 16px;
    top: 16px;
    z-index: 101;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 8px 12px;
    cursor: pointer;
    display: none;
    color: var(--text-primary);
    transition: all 0.2s;
}

.sidebar-toggle:hover {
    background: var(--bg-sidebar-hover);
}

.sidebar-status {
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
}

.sidebar-status:hover {
    background: var(--bg-secondary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-content.sidebar-closed .chat-container {
    max-width: 900px;
    margin: 0 auto;
}

/* Header */
.main-header {
    height: var(--header-height);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-left h1 {
    font-size: 20px;
    font-weight: 600;
}

.badge {
    background: var(--accent-color);
    color: white;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 10px;
    font-weight: 500;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.stats-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    padding: 6px 12px;
    background: var(--bg-secondary);
    border-radius: 20px;
}

.theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    font-size: 18px;
}

.theme-toggle:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Chat Container */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

/* Welcome Screen */
.welcome-screen {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 48px 24px;
}

.welcome-icon {
    font-size: 64px;
    margin-bottom: 24px;
}

.welcome-screen h2 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 12px;
}

.welcome-screen p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.suggestions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 24px;
}

.suggestion-card {
    background: var(--bg-secondary);
    padding: 16px;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
    border: 1px solid var(--border-color);
}

.suggestion-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    background: var(--message-bot);
}

.suggestion-card i {
    font-size: 20px;
    margin-bottom: 8px;
    display: block;
    color: var(--accent-color);
}

.suggestion-card span {
    font-size: 14px;
    font-weight: 500;
}

/* Message Styles */
.message {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    animation: fadeIn 0.3s ease;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

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

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

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

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

.message-content {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 20px;
    line-height: 1.6;
    font-size: 15px;
}

.message.bot .message-content {
    background: var(--message-bot);
    border-radius: 20px 20px 20px 4px;
}

.message.user .message-content {
    background: var(--accent-color);
    color: white;
    border-radius: 20px 20px 4px 20px;
}

.message-content strong {
    font-weight: 600;
}

.message-content code {
    background: rgba(0,0,0,0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.message-content pre {
    background: rgba(0,0,0,0.1);
    padding: 12px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 8px 0;
}

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

.message-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 12px 0;
}

.message-content th,
.message-content td {
    border: 1px solid var(--border-color);
    padding: 8px;
    text-align: left;
}

.message-content th {
    background: var(--bg-secondary);
    font-weight: 600;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    margin-bottom: 16px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

.typing-dots {
    display: flex;
    gap: 4px;
    padding: 8px 12px;
    background: var(--message-bot);
    border-radius: 20px;
    width: fit-content;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

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

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-10px); opacity: 1; }
}

.typing-text {
    font-size: 13px;
    color: var(--text-secondary);
}

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

.input-container {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    background: var(--bg-secondary);
    border-radius: 24px;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
    max-width: 900px;
    margin: 0 auto;
}

.input-container:focus-within {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(25, 195, 125, 0.2);
}

textarea {
    flex: 1;
    background: transparent;
    border: none;
    resize: none;
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-primary);
    font-family: inherit;
    max-height: 150px;
}

textarea:focus {
    outline: none;
}

.send-btn {
    background: var(--accent-color);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.2s;
    flex-shrink: 0;
}

.send-btn:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

.input-footer {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 12px;
}

.info-text {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    animation: modalSlideIn 0.3s ease;
}

.modal-small {
    max-width: 400px;
}

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

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 8px;
}

.modal-close:hover {
    background: var(--bg-secondary);
}

.modal-body {
    padding: 20px;
}

.setting-item {
    margin-bottom: 20px;
}

.setting-item label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
}

.setting-item select {
    width: 100%;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
}

.sidebar-setting {
    display: flex;
    gap: 8px;
}

.sidebar-setting-btn {
    flex: 1;
    padding: 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 13px;
    transition: all 0.2s;
}

.sidebar-setting-btn:hover {
    background: var(--bg-sidebar-hover);
    border-color: var(--accent-color);
}

.sidebar-setting-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

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

.action-btn:hover {
    background: var(--bg-sidebar-hover);
    transform: translateY(-1px);
}

.danger-btn {
    background: #dc2626;
    color: white;
    border-color: #dc2626;
}

.danger-btn:hover {
    background: #b91c1c;
    border-color: #b91c1c;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    z-index: 1001;
    animation: toastSlideUp 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

@keyframes toastSlideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.toast.success i {
    color: var(--accent-color);
}

.toast.error i {
    color: #dc2626;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100%;
        width: 280px;
        transform: translateX(-100%);
        z-index: 200;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .sidebar-toggle {
        display: flex;
    }
    
    .sidebar.closed {
        width: 280px;
    }
    
    .main-header {
        padding-left: 60px;
    }
    
    .message-content {
        max-width: 90%;
    }
    
    .suggestions {
        grid-template-columns: 1fr;
    }
    
    .welcome-screen h2 {
        font-size: 24px;
    }
    
    .message {
        max-width: 100%;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

/* Efeito de Pensamento (Thinking) */
.thinking-content {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--message-bot) !important;
    padding: 12px 20px !important;
}

.thinking-dots {
    display: flex;
    gap: 4px;
    align-items: center;
}

.thinking-dots span {
    width: 8px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: thinkingBounce 1.4s infinite ease-in-out;
}

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

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

.thinking-text {
    font-size: 14px;
    color: var(--text-secondary);
    animation: thinkingPulse 1.5s infinite;
}

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

/* Efeito de Digitação */
.message.typing-effect .message-content {
    position: relative;
}

.typing-cursor {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background: var(--accent-color);
    margin-left: 2px;
    vertical-align: middle;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Animações suaves para mensagens */
.message {
    animation: fadeInUp 0.3s ease-out;
}

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

/* Efeito de hover nas mensagens */
.message:hover .message-avatar {
    transform: scale(1.05);
    transition: transform 0.2s ease;
}

.message:hover .message-content {
    filter: brightness(0.98);
}

/* Barra de progresso de digitação (opcional) */
.typing-progress {
    position: fixed;
    bottom: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-hover));
    width: 0%;
    transition: width 0.1s linear;
    z-index: 1000;
}

/* Efeito ChatGPT - Streaming */
.streaming-cursor {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background: var(--accent-color);
    margin-left: 2px;
    vertical-align: middle;
    animation: blink 1s step-end infinite;
}

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

/* Efeito de Pensamento */
.thinking-content {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--message-bot) !important;
    padding: 12px 20px !important;
}

.thinking-dots {
    display: flex;
    gap: 4px;
    align-items: center;
}

.thinking-dots span {
    width: 8px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: thinkingBounce 1.4s infinite ease-in-out;
}

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

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

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

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    z-index: 1001;
    animation: slideUp 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.toast.success i {
    color: var(--accent-color);
}

.toast.error i {
    color: #ef4444;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* Mensagens em streaming */
.message.streaming .message-content {
    position: relative;
}