/* Projet Résurgence AI Chat - Modern Glassmorphism Design */
:root {
    /* Brand Colors */
    --primary-gold: #D5B654;
    --primary-gold-dark: #B89A3D;
    --primary-gold-light: #E6C76A;
    --primary-gold-glow: rgba(213, 182, 84, 0.2);
    
    /* Modern Dark Theme */
    --bg-primary: #0a0a0a;
    --bg-secondary: #121212;
    --bg-tertiary: #1a1a1a;
    --bg-glass: rgba(26, 26, 26, 0.7);
    --bg-glass-light: rgba(42, 42, 42, 0.5);
    
    --text-primary: #ffffff;
    --text-secondary: #d0d0d0;
    --text-muted: #888888;
    
    --border-glass: rgba(255, 255, 255, 0.1);
    --border-accent: var(--primary-gold);
    
    --accent-success: #10b981;
    --accent-error: #ef4444;
    --accent-info: #3b82f6;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --glow-gold: 0 0 20px var(--primary-gold-glow);
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 16px;
    --radius-lg: 24px;
    --radius-sm: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', system-ui, sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0f0f0f 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Animated background gradient */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(213, 182, 84, 0.03) 0%, transparent 50%);
    animation: rotate 30s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* Header - Modern Glass Design */
.header {
    backdrop-filter: blur(20px) saturate(180%);
    background: var(--bg-glass);
    border-bottom: 1px solid var(--border-glass);
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow);
}

.header-content {
    text-align: center;
    margin-bottom: 1rem;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--primary-gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    backdrop-filter: blur(10px);
    background: var(--bg-glass-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-glass);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.status-indicator.online {
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.1);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
    box-shadow: 0 0 10px currentColor;
}

.status-indicator.online .status-dot {
    background-color: var(--accent-success);
    animation: pulse-glow 2s infinite;
}

.status-indicator.error .status-dot {
    background-color: var(--accent-error);
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

.model-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 12px;
    border: 1px solid var(--border-glass);
}

.model-selector label {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.model-selector select {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
}

.model-selector select:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--primary-gold);
}

.model-selector select:focus {
    border-color: var(--primary-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.model-selector select option {
    background: var(--bg-dark);
    color: var(--text-primary);
}

.model-selector select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.clear-btn {
    padding: 0.75rem 1.5rem;
    backdrop-filter: blur(10px);
    background: var(--bg-glass-light);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 500;
}

.clear-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

/* Chat Container - Smooth Scrolling */
.chat-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 2rem;
    scroll-behavior: smooth;
}

.chat-container::-webkit-scrollbar {
    width: 6px;
}

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

.chat-container::-webkit-scrollbar-thumb {
    background: var(--primary-gold-dark);
    border-radius: 3px;
    transition: var(--transition);
}

.chat-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-gold);
}

/* Welcome Message - Modern Card */
.welcome-message {
    max-width: 700px;
    margin: 3rem auto;
    text-align: center;
}

.welcome-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 4px 20px rgba(213, 182, 84, 0.3));
}

.welcome-message h2 {
    font-size: 2.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--primary-gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.welcome-message > p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    font-weight: 400;
}

.capabilities {
    backdrop-filter: blur(20px);
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    padding: 2rem;
    margin: 2rem 0;
    text-align: left;
    box-shadow: var(--shadow);
}

.capabilities h3 {
    font-size: 1.3rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-gold-light) 0%, var(--primary-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.capabilities ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.capabilities li {
    padding: 1rem;
    color: var(--text-secondary);
    font-size: 1rem;
    background: var(--bg-glass-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-glass);
    transition: var(--transition);
}

.capabilities li:hover {
    border-color: var(--primary-gold);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(213, 182, 84, 0.1);
}

.hint {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-style: italic;
    margin-top: 2rem;
}

/* Messages - Sleek Bubbles */
.message {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    animation: slideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

.message.system-message {
    justify-content: center;
    opacity: 0.8;
    margin: 1rem 0;
}

.message.system-message .message-content {
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    text-align: center;
    max-width: 500px;
}

.message.system-message .message-text {
    color: var(--primary-gold);
    font-size: 0.9rem;
}

.message-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    backdrop-filter: blur(10px);
    border: 2px solid var(--border-glass);
    flex-shrink: 0;
    transition: var(--transition);
}

.message.user .message-avatar {
    background: linear-gradient(135deg, var(--accent-info) 0%, #2563eb 100%);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.message.assistant .message-avatar {
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--primary-gold-dark) 100%);
    border-color: rgba(213, 182, 84, 0.3);
    box-shadow: 0 4px 20px var(--primary-gold-glow);
}

.message-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 75%;
}

.message.user .message-content {
    align-items: flex-end;
}

.message-bubble {
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.message.assistant .message-bubble {
    background: var(--bg-glass);
}

.message.user .message-bubble {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(37, 99, 235, 0.2) 100%);
    border-color: rgba(59, 130, 246, 0.3);
}

.message-bubble:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.message-text {
    line-height: 1.7;
    word-wrap: break-word;
    font-size: 0.95rem;
}

/* Markdown Styling */
.message-text p {
    margin: 0.5em 0;
}

.message-text p:first-child {
    margin-top: 0;
}

.message-text p:last-child {
    margin-bottom: 0;
}

.message-text h1, .message-text h2, .message-text h3 {
    margin: 1em 0 0.5em 0;
    color: var(--primary-gold);
    font-weight: 600;
}

.message-text h1 { font-size: 1.5em; }
.message-text h2 { font-size: 1.3em; }
.message-text h3 { font-size: 1.1em; }

.message-text code {
    background: rgba(0, 0, 0, 0.4);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
    color: var(--primary-gold-light);
}

.message-text pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 1em;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 0.5em 0;
    border: 1px solid var(--border-glass);
}

.message-text pre code {
    background: none;
    padding: 0;
    color: var(--text-secondary);
}

.message-text ul, .message-text ol {
    margin: 0.5em 0;
    padding-left: 1.5em;
}

.message-text li {
    margin: 0.3em 0;
}

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

.message-text em {
    color: var(--text-secondary);
    font-style: italic;
}

.message-text a {
    color: var(--accent-info);
    text-decoration: none;
    transition: var(--transition-fast);
}

.message-text a:hover {
    color: var(--primary-gold);
    text-decoration: underline;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-weight: 500;
}

/* Thinking Indicator - Animated */
.thinking {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    backdrop-filter: blur(20px);
    background: var(--bg-glass);
    border-radius: var(--radius);
    border: 1px solid var(--border-glass);
    max-width: fit-content;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.thinking-dots {
    display: flex;
    gap: 6px;
}

.thinking-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary-gold);
    animation: bounce 1.4s infinite ease-in-out;
    box-shadow: 0 0 10px var(--primary-gold-glow);
}

.thinking-dots span:nth-child(1) { animation-delay: -0.32s; }
.thinking-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { 
        transform: scale(0);
        opacity: 0.5;
    }
    40% { 
        transform: scale(1.2);
        opacity: 1;
    }
}

/* Error Message - Modern Alert */
.error-message {
    padding: 1.25rem 1.5rem;
    backdrop-filter: blur(20px);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.2);
}

/* Input Container - Glass Effect */
.input-container {
    padding: 1.5rem 2rem 2rem;
    backdrop-filter: blur(20px) saturate(180%);
    background: var(--bg-glass);
    border-top: 1px solid var(--border-glass);
    box-shadow: var(--shadow-lg);
}

.input-wrapper {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

#user-input {
    flex: 1;
    min-height: 56px;
    max-height: 200px;
    padding: 1rem 1.25rem;
    backdrop-filter: blur(10px);
    background: var(--bg-glass-light);
    color: var(--text-primary);
    border: 2px solid var(--border-glass);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    resize: none;
    transition: var(--transition);
    line-height: 1.5;
}

#user-input:focus {
    outline: none;
    border-color: var(--primary-gold);
    background: var(--bg-tertiary);
    box-shadow: 0 0 0 4px var(--primary-gold-glow), var(--glow-gold);
}

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

.send-btn {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--primary-gold-dark) 100%);
    color: var(--bg-primary);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px var(--primary-gold-glow);
    position: relative;
    overflow: hidden;
}

.send-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.send-btn:hover::before {
    width: 300px;
    height: 300px;
}

.send-btn:hover:not(:disabled) {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 30px var(--primary-gold-glow);
}

.send-btn:active:not(:disabled) {
    transform: translateY(-1px) scale(0.98);
}

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

.send-btn svg {
    position: relative;
    z-index: 1;
}

.input-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.input-hint {
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: 1.25rem 1.5rem;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .chat-container {
        padding: 1.5rem 1rem;
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .input-container {
        padding: 1.25rem 1.5rem;
    }
    
    .welcome-message {
        margin: 2rem auto;
    }
    
    .welcome-icon {
        font-size: 4rem;
    }
    
    .welcome-message h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1rem;
    }
    
    .status-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .clear-btn {
        width: 100%;
    }
    
    .message-content {
        max-width: 90%;
    }
    
    .input-wrapper {
        gap: 0.75rem;
    }
    
    #user-input {
        min-height: 48px;
    }
    
    .send-btn {
        width: 48px;
        height: 48px;
    }
}

/* Smooth transitions for all interactive elements */
button, .message-bubble, .capabilities li, .status-indicator, .message-avatar {
    will-change: transform;
}