:root {
    --bg-color: #131314;
    --glass-bg: #131314;
    --glass-border: rgba(255, 255, 255, 0.1);
    --primary-color: #a8c7fa; /* Azul claro do Gemini */
    --primary-hover: #7cacf8;
    --primary-glow: rgba(168, 199, 250, 0.2);
    --text-color: #e3e3e3;
    --text-muted: #c4c7c5;
    --user-msg-bg: #1e1f20;
    --system-msg-bg: transparent;
    --chip-bg: #1e1f20;
    --chip-hover: #333537;
}

body.light-mode {
    --bg-color: #f0f4f9;
    --glass-bg: #ffffff;
    --glass-border: rgba(0, 0, 0, 0.1);
    --primary-color: #0b57d0;
    --primary-hover: #0842a0;
    --primary-glow: rgba(11, 87, 208, 0.1);
    --text-color: #1f1f1f;
    --text-muted: #444746;
    --user-msg-bg: #e9eef6;
    --system-msg-bg: transparent;
    --chip-bg: #e9eef6;
    --chip-hover: #d3e3fd;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    overflow: hidden;
}

.glass-container {
    width: 95vw;
    max-width: 1400px;
    height: 90vh;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

header {
    padding: 20px 30px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s;
    border: 1px solid var(--glass-border);
}

.icon-btn:hover {
    background: var(--chip-hover);
    transform: translateY(-2px);
}

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

.logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-indicator.online {
    background-color: #10b981;
    box-shadow: 0 0 12px #10b981;
}

.chat-area {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Custom Scrollbar */
.chat-area::-webkit-scrollbar {
    width: 6px;
}

.chat-area::-webkit-scrollbar-track {
    background: transparent;
}

.chat-area::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.message {
    max-width: 85%;
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.3s ease-out;
}

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

.message-content {
    padding: 16px 20px;
    border-radius: 18px;
    line-height: 1.6;
    font-size: 0.95rem;
    word-break: break-word;
}

.user-message {
    align-self: flex-end;
}

.user-message .message-content {
    background: var(--user-msg-bg);
    color: var(--text-color);
    border-bottom-right-radius: 18px;
}

.system-message {
    align-self: flex-start;
    width: 100%;
}

.system-message .message-content {
    background: var(--system-msg-bg);
    border: none;
    padding-left: 0;
}

footer {
    padding: 20px 30px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.quick-actions {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 5px;
}

.quick-actions::-webkit-scrollbar {
    height: 4px;
}

.quick-actions::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
}

.chip-btn {
    background: var(--chip-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    font-family: inherit;
}

.chip-btn:hover {
    background: var(--chip-hover);
    transform: translateY(-2px);
}

.chip-btn.danger {
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.chip-btn.danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.input-container {
    display: flex;
    gap: 15px;
    background: rgba(0, 0, 0, 0.2);
    padding: 8px 15px;
    border-radius: 18px;
    border: 1px solid var(--glass-border);
    align-items: center;
}

.upload-label {
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-label:hover {
    color: var(--primary-color);
}

input[type="text"] {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-color);
    font-size: 0.95rem;
    font-family: inherit;
}

.send-btn {
    background: var(--primary-color);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.send-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--glass-border);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(to right, #6366f1, #a855f7);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

/* Markdown Rendering Styles in Chat */
.message-content h1, .message-content h2, .message-content h3 {
    margin-top: 10px;
    margin-bottom: 5px;
    color: var(--text-color);
}

.message-content p {
    margin-bottom: 8px;
}

.message-content ul, .message-content ol {
    margin-left: 20px;
    margin-bottom: 10px;
}

.message-content li {
    margin-bottom: 4px;
}

.message-content code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 5px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.85rem;
}

.message-content pre {
    background: rgba(0, 0, 0, 0.3);
    padding: 15px;
    border-radius: 12px;
    overflow-x: auto;
    margin: 10px 0;
    border: 1px solid var(--glass-border);
}

.message-content pre code {
    background: transparent;
    padding: 0;
}

.message-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 15px;
    margin: 10px 0;
    color: var(--text-muted);
    font-style: italic;
}

/* --- Novos Estilos para Layout de 3 Colunas e Login --- */

.main-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 200px;
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--glass-border);
}

.right-sidebar {
    border-right: none;
    border-left: 1px solid var(--glass-border);
    width: 320px;
}

.chat-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h3 {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.sessions-list, .events-list {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.session-item {
    padding: 10px 15px;
    background: var(--chip-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-item:hover, .session-item.active {
    background: var(--chip-hover);
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.session-item.empty {
    background: transparent;
    border: none;
    color: var(--text-muted);
    text-align: center;
    cursor: default;
}

.event-item {
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    font-size: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    word-break: break-word;
}

/* Login Overlay */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 15, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.3s ease;
}

.login-box {
    background: var(--glass-bg);
    padding: 40px;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    text-align: center;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.login-box h2 {
    margin-bottom: 10px;
    font-weight: 600;
}

.login-box p {
    color: var(--text-muted);
    margin-bottom: 30px;
    font-size: 0.9rem;
}

.login-box input {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    padding: 12px 20px;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    margin-bottom: 20px;
    outline: none;
    text-align: center;
}

.login-box input:focus {
    border-color: var(--primary-color);
}

.login-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.login-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.user-badge {
    background: var(--chip-bg);
    padding: 6px 12px;
    border-radius: 10px;
    font-size: 0.85rem;
    border: 1px solid var(--glass-border);
}