/* FMCG Agent Chat Interface - Dark Theme */

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-message-user: #1f6feb;
    --bg-message-assistant: #21262d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-color: #58a6ff;
    --accent-hover: #79c0ff;
    --border-color: #30363d;
    --success-color: #3fb950;
    --warning-color: #d29922;
    --error-color: #f85149;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

/* ===== Chat Container ===== */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 1400px;
    margin: 0 auto;
    background-color: var(--bg-secondary);
}

/* ===== Header ===== */
.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

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

.header-brand i {
    font-size: 1.75rem;
}

.header-brand h1 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.token-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.token-badge i {
    color: var(--success-color);
}

/* ===== Messages Area ===== */
.messages-area {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    scroll-behavior: smooth;
}

.messages-area::-webkit-scrollbar {
    width: 8px;
}

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

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

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

/* ===== Messages ===== */
.message {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    animation: fadeIn 0.3s ease-out;
}

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.1rem;
}

.assistant-message .message-avatar {
    background: linear-gradient(135deg, #238636, #2ea043);
    color: white;
}

.user-message .message-avatar {
    background: linear-gradient(135deg, #1f6feb, #58a6ff);
    color: white;
}

.message-content {
    flex: 1;
    max-width: 85%;
}

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

.user-message .message-content {
    background-color: var(--bg-message-user);
    padding: 0.875rem 1.25rem;
    border-radius: 1.25rem;
    color: white;
}

.assistant-message .message-content {
    background-color: var(--bg-message-assistant);
    padding: 1rem 1.25rem;
    border-radius: 1.25rem 1.25rem 1.25rem 0.25rem;
    border: 1px solid var(--border-color);
}

/* ===== Markdown Body ===== */
.markdown-body {
    background-color: transparent !important;
    color: var(--text-primary) !important;
    font-size: 14px;
}

.markdown-body h1, .markdown-body h2, .markdown-body h3 {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.markdown-body h1:first-child,
.markdown-body h2:first-child,
.markdown-body h3:first-child {
    margin-top: 0;
}

.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.875rem;
}

.markdown-body th,
.markdown-body td {
    border: 1px solid var(--border-color);
    padding: 0.5rem 0.75rem;
    text-align: left;
}

.markdown-body th {
    background-color: var(--bg-tertiary);
    font-weight: 600;
}

.markdown-body tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}

.markdown-body code {
    background-color: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.875em;
}

.markdown-body pre {
    background-color: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
}

.markdown-body pre code {
    background: none;
    padding: 0;
}

.markdown-body ul, .markdown-body ol {
    padding-left: 1.5rem;
}

.markdown-body li {
    margin-bottom: 0.25rem;
}

.markdown-body blockquote {
    border-left: 4px solid var(--accent-color);
    padding-left: 1rem;
    margin-left: 0;
    color: var(--text-secondary);
}

.markdown-body hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 1.5rem 0;
}

/* ===== Example Prompts ===== */
.example-prompts {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.example-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.example-btn i {
    font-size: 1rem;
}

/* ===== Download Button ===== */
.download-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: linear-gradient(135deg, #238636, #2ea043);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.download-btn:hover {
    background: linear-gradient(135deg, #2ea043, #3fb950);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(46, 160, 67, 0.3);
}

.download-btn i {
    font-size: 1.1rem;
}

/* ===== Copy Button ===== */
.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.message-content:hover .copy-btn {
    opacity: 1;
}

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

/* ===== Typing Indicator ===== */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0 1.5rem 1rem;
}

.typing-dots {
    display: flex;
    gap: 4px;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background-color: var(--text-muted);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.typing-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

.typing-text {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-style: italic;
}

/* ===== Input Area ===== */
.input-area {
    padding: 1rem 1.5rem;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.input-form {
    width: 100%;
}

.input-wrapper {
    display: flex;
    gap: 0.75rem;
    align-items: flex-end;
}

#message-input {
    flex: 1;
    min-height: 44px;
    max-height: 200px;
    padding: 0.75rem 1rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    color: var(--text-primary);
    font-size: 0.9375rem;
    resize: none;
    overflow-y: auto;
    transition: border-color 0.2s ease;
}

#message-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

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

#message-input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

#send-btn {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

#send-btn:hover:not(:disabled) {
    transform: scale(1.05);
}

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

#send-btn i {
    font-size: 1.1rem;
}

.input-footer {
    margin-top: 0.5rem;
    text-align: center;
}

.input-footer small {
    font-size: 0.75rem;
}

/* ===== Error Message ===== */
.error-message .message-content {
    background-color: rgba(248, 81, 73, 0.1);
    border-color: var(--error-color);
}

/* ===== Report Metadata ===== */
.report-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--border-color);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.report-meta i {
    color: var(--success-color);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .chat-header {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
    
    .header-brand h1 {
        font-size: 1.1rem;
    }
    
    .message-content {
        max-width: 90%;
    }
    
    .example-prompts {
        flex-direction: column;
    }
    
    .example-btn {
        width: 100%;
        justify-content: center;
    }
    
    .token-badge span:not(#token-value) {
        display: none;
    }
}

@media (max-width: 480px) {
    .messages-area {
        padding: 1rem;
    }
    
    .input-area {
        padding: 0.75rem 1rem;
    }
    
    .message {
        gap: 0.5rem;
    }
    
    .message-avatar {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
}

/* ===== Toast Customization ===== */
.toast {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.toast-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.toast-body {
    color: var(--text-secondary);
}

/* ===== Utilities ===== */
.text-success { color: var(--success-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-error { color: var(--error-color) !important; }