/* ============================================
   FINANCIAL CHATBOT - MODERN MINIMALIST
   Professional & Clean Design
   ============================================ */

:root {
    /* Modern Color Palette */
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #8b5cf6;
    --success: #10b981;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    
    /* Backgrounds */
    --bg-chat: #ffffff;
    --bg-message-bot: #f8fafc;
    --bg-message-user: #3b82f6;
    --bg-input: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.95);
    
    /* Borders */
    --border-light: #e2e8f0;
    --border-focus: #3b82f6;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index */
    --z-fixed: 999998;
    --z-modal: 999999;
}

/* Dark Mode Variables */
body.dark-mode {
    --bg-chat: #0f172a;
    --bg-message-bot: #1e293b;
    --bg-message-user: #3b82f6;
    --bg-input: #1e293b;
    --bg-glass: rgba(15, 23, 42, 0.95);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-light: #334155;
}

/* ============================================
   CHATBOT CONTAINER
   ============================================ */

.chatbot-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: var(--z-fixed);
    font-family: var(--font-primary);
    pointer-events: none;
}

.chatbot-container > * {
    pointer-events: auto;
}

/* ============================================
   CHATBOT WIDGET
   ============================================ */

.chatbot-widget {
    display: none;
    flex-direction: column;
    width: 420px;
    height: 650px;
    max-height: 90vh;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition);
}

.chatbot-widget:not(.hidden),
.chatbot-widget.chatbot-open {
    display: flex !important;
}

.chatbot-widget:hover {
    box-shadow: 0 25px 35px rgba(0, 0, 0, 0.18);
}

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

.chatbot-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.chatbot-header-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* ✅ AVATAR MASQUÉ DANS LE HEADER */
.chatbot-avatar {
    display: none !important;
}

.chatbot-title-section {
    flex: 1;
}

.chatbot-title {
    font-size: 1rem;
    font-weight: 600;
    color: white;
    margin-bottom: 2px;
    letter-spacing: -0.01em;
}

.chatbot-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}

.status-indicator {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.chatbot-header-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.chatbot-header-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-sm);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    font-size: 14px;
}

.chatbot-header-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.chatbot-header-btn:active {
    transform: scale(0.98);
}

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

.chatbot-messages {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    overflow-x: hidden;
    background: var(--bg-chat);
    min-height: 0;
}

.chatbot-messages::-webkit-scrollbar {
    width: 6px;
}

.chatbot-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chatbot-messages::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: var(--radius-full);
}

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

/* ============================================
   MESSAGE BUBBLES
   ============================================ */

.message {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    animation: message-slide-in 0.3s ease-out;
}

@keyframes message-slide-in {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    overflow: hidden;
}

.message-avatar.bot-avatar {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.message-avatar.user-avatar {
    background: linear-gradient(135deg, #8b5cf6, #ec4899);
}

.user-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.message-content {
    max-width: 75%;
}

.message-bubble {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    transition: all var(--transition);
}

.message.bot-message .message-bubble {
    background: var(--bg-message-bot);
    border: 1px solid var(--border-light);
    border-top-left-radius: 4px;
    color: var(--text-primary);
}

.message.user-message .message-bubble {
    background: var(--bg-message-user);
    border-top-right-radius: 4px;
    color: white;
}

.message-text {
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
    max-width: 100%;
}

.message-text hr {
    border: none;
    border-top: 1px solid var(--border-light);
    margin: var(--spacing-sm) 0;
    width: 100%;
    max-width: 100%;
}

.message-text strong {
    font-weight: 600;
    color: var(--primary);
}

.message.user-message .message-text strong {
    color: white;
}

.message-text table {
    font-size: 0.85rem;
    border-collapse: collapse;
    margin: var(--spacing-sm) 0;
    max-width: 100%;
    overflow-x: auto;
}

.message-text th,
.message-text td {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-light);
}

.message-time {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
    display: block;
}

/* ============================================
   TYPING INDICATOR
   ============================================ */

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: var(--spacing-sm);
}

.typing-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-secondary);
    animation: typing-bounce 1.4s ease-in-out infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing-bounce {
    0%, 60%, 100% { 
        transform: translateY(0); 
        opacity: 0.5;
    }
    30% { 
        transform: translateY(-8px); 
        opacity: 1;
    }
}

/* ============================================
   SUGGESTIONS
   ============================================ */

.chatbot-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    padding: 0 var(--spacing-lg) var(--spacing-md);
    flex-shrink: 0;
}

.suggestion-chip {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    font-weight: 500;
}

.suggestion-chip:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.suggestion-chip:active {
    transform: translateY(0);
}

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

.chatbot-input-area {
    padding: var(--spacing-lg);
    background: var(--bg-chat);
    border-top: 1px solid var(--border-light);
    flex-shrink: 0;
}

.chatbot-input-container {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
}

.chatbot-input-wrapper {
    flex: 1;
}

.chatbot-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-primary);
    resize: none;
    height: 44px;
    min-height: 44px;
    max-height: 120px;
    overflow-y: auto;
    transition: all var(--transition);
    outline: none;
    line-height: 1.5;
}

.chatbot-input::placeholder {
    color: var(--text-secondary);
}

.chatbot-input:focus {
    background: var(--bg-chat);
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.chatbot-send-btn {
    width: 44px;
    height: 44px;
    border: none;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-md);
    color: white;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    flex-shrink: 0;
}

.chatbot-send-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.chatbot-send-btn:active {
    transform: translateY(0);
}

.chatbot-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ============================================
   TOGGLE BUTTON
   ============================================ */

.chatbot-toggle-btn {
    width: 56px;
    height: 56px;
    border: none;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    color: white;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition);
    pointer-events: auto;
    z-index: var(--z-modal);
}

.chatbot-toggle-btn:hover {
    transform: scale(1.08);
    box-shadow: var(--shadow-xl);
}

.chatbot-toggle-btn:active {
    transform: scale(1.02);
}

/* ============================================
   CHART CONTAINER
   ============================================ */

.chart-container {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: var(--bg-message-bot);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.chart-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.chart-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-input);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition);
}

.chart-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.chart-canvas-wrapper {
    position: relative;
    height: 280px;
}

/* ============================================
   UTILITIES
   ============================================ */

.hidden {
    display: none !important;
}

.fade-in {
    animation: fade-in 0.3s ease-in;
}

@keyframes fade-in {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

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

@media (max-width: 768px) {
    .chatbot-container {
        bottom: 0;
        right: 0;
        left: 0;
        width: 100%;
    }
    
    .chatbot-widget {
        width: 100%;
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
        bottom: 0;
    }
    
    .message-content {
        max-width: 80%;
    }
    
    .chatbot-toggle-btn {
        bottom: 1rem;
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .chatbot-header {
        padding: var(--spacing-md);
    }
    
    .chatbot-messages {
        padding: var(--spacing-md);
    }
    
    .chatbot-input-area {
        padding: var(--spacing-md);
    }
    
    .message-content {
        max-width: 85%;
    }
}

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

body.dark-mode .chatbot-widget {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

body.dark-mode .message.bot-message .message-bubble {
    background: var(--bg-message-bot);
    border-color: #334155;
}

body.dark-mode .chatbot-input {
    background: var(--bg-input);
    border-color: #334155;
    color: var(--text-primary);
}

body.dark-mode .chatbot-input:focus {
    background: #1e293b;
    border-color: var(--primary);
}

body.dark-mode .suggestion-chip {
    background: var(--bg-input);
    border-color: #334155;
    color: var(--text-primary);
}

body.dark-mode .chart-container {
    background: var(--bg-message-bot);
    border-color: #334155;
}