/**
 * Knowbot - Estilos Principales
 * Sistema de Chat Basado en Conocimiento
 */

/* ==========================================
   CSS Variables / Design Tokens
   ========================================== */
:root {
    /* Primary Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    
    /* Secondary Colors */
    --secondary: #8b5cf6;
    --secondary-dark: #7c3aed;
    
    /* Accent Colors */
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-blue: #3b82f6;
    
    /* Neutral Colors */
    --bg-dark: #0f0f1a;
    --bg-darker: #080810;
    --bg-card: #1a1a2e;
    --bg-card-hover: #252540;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    /* Glass Effect */
    --glass-bg: rgba(26, 26, 46, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.5);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-dark: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

/* ==========================================
   Base Styles
   ========================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ==========================================
   Chat Page Styles
   ========================================== */
.chat-body {
    background: var(--bg-darker);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    min-height: 100vh;
}

.chat-container {
    width: 100%;
    max-width: 500px;
    height: 90vh;
    max-height: 700px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

/* Chat Header */
.chat-header {
    padding: var(--space-lg);
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.bot-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.bot-avatar {
    position: relative;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.avatar-icon {
    font-size: 24px;
}

.status-dot {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 14px;
    height: 14px;
    background: var(--accent-green);
    border: 3px solid var(--bg-card);
    border-radius: 50%;
}

.bot-details h1 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.bot-details .status {
    font-size: 13px;
    color: var(--accent-green);
}

.admin-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 18px;
    transition: var(--transition-fast);
}

.admin-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(90deg);
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

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

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

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

/* Messages */
.message {
    display: flex;
    gap: var(--space-sm);
    max-width: 85%;
    animation: messageIn 0.3s ease;
}

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

.bot-message {
    align-self: flex-start;
}

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

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

.bot-message .message-avatar {
    background: var(--gradient-primary);
}

.message-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.message-bubble {
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    font-size: 14px;
    line-height: 1.5;
}

.bot-message .message-bubble {
    background: var(--bg-card);
    border-bottom-left-radius: var(--space-xs);
}

.user-message .message-bubble {
    background: var(--gradient-primary);
    border-bottom-right-radius: var(--space-xs);
}

.message-time {
    font-size: 11px;
    color: var(--text-muted);
    padding: 0 var(--space-xs);
}

.user-message .message-time {
    text-align: right;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 4px 0;
}

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

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

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

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

/* Chat Input */
.chat-input-area {
    padding: var(--space-lg);
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--glass-border);
}

.chat-form {
    display: flex;
    gap: var(--space-sm);
}

.input-wrapper {
    flex: 1;
    display: flex;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    overflow: hidden;
    transition: var(--transition-fast);
}

.input-wrapper:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.chat-form input {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}

.chat-form input::placeholder {
    color: var(--text-muted);
}

.send-button {
    width: 48px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.send-button:hover,
.send-button.active {
    color: var(--primary);
}

.send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.send-icon {
    font-size: 18px;
}

.powered-by {
    text-align: center;
    font-size: 11px;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}

.powered-by strong {
    color: var(--text-secondary);
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 540px) {
    .chat-body {
        padding: 0;
    }
    
    .chat-container {
        max-width: 100%;
        height: 100vh;
        max-height: none;
        border-radius: 0;
    }
}

/* ==========================================
   Utility Classes
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

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

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
}

.btn-danger {
    background: var(--accent-red);
    color: white;
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: 12px;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-green);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-orange);
}

.badge-info {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent-blue);
}

.badge-primary {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-light);
}

.alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-size: 14px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--accent-green);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}