/* Deepseek Chat Interface - Version 3.0 */

:root {
    --deepseek-primary: #2271b1;
    --deepseek-primary-hover: #135e96;
    --deepseek-secondary: #00a32a;
    --deepseek-accent: #7e57c2;
    --deepseek-warning: #dba617;
    --deepseek-danger: #d63638;
    --deepseek-success: #00a32a;
    
    --deepseek-bg: #ffffff;
    --deepseek-surface: #f8f9fa;
    --deepseek-text: #1d2327;
    --deepseek-text-secondary: #646970;
    --deepseek-border: #e0e0e0;
    --deepseek-input-bg: #ffffff;
    --deepseek-message-user: #e3f2fd;
    --deepseek-message-assistant: #ffffff;
    --deepseek-header-bg: #f8f9fa;
    --deepseek-chat-bg: #ffffff;
    
    --deepseek-shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --deepseek-shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --deepseek-shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    
    --deepseek-radius-sm: 6px;
    --deepseek-radius-md: 12px;
    --deepseek-radius-lg: 16px;
    
    --deepseek-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --deepseek-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

/* Dark Theme */
[data-theme="dark"] {
    --deepseek-bg: #1a1a1a;
    --deepseek-surface: #2d2d2d;
    --deepseek-text: #ffffff;
    --deepseek-text-secondary: #a8a8a8;
    --deepseek-border: #404040;
    --deepseek-input-bg: #2d2d2d;
    --deepseek-message-user: #1e3a5f;
    --deepseek-message-assistant: #2d2d2d;
    --deepseek-header-bg: #242424;
    --deepseek-chat-bg: #1a1a1a;
}

/* Auto Theme - System Preference */
@media (prefers-color-scheme: dark) {
    [data-theme="auto"] {
        --deepseek-bg: #1a1a1a;
        --deepseek-surface: #2d2d2d;
        --deepseek-text: #ffffff;
        --deepseek-text-secondary: #a8a8a8;
        --deepseek-border: #404040;
        --deepseek-input-bg: #2d2d2d;
        --deepseek-message-user: #1e3a5f;
        --deepseek-message-assistant: #2d2d2d;
        --deepseek-header-bg: #242424;
        --deepseek-chat-bg: #1a1a1a;
    }
}

/* Accessibility Helper */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Container */
.deepseek-container {
    display: flex;
    flex-direction: column;
    height: 600px;
    max-height: 90vh;
    background: var(--deepseek-bg);
    border: 1px solid var(--deepseek-border);
    border-radius: var(--deepseek-radius-lg);
    box-shadow: var(--deepseek-shadow-lg);
    font-family: var(--deepseek-font);
    overflow: hidden;
    transition: var(--deepseek-transition);
    position: relative;
}

.deepseek-container.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    z-index: 999999;
}

/* Header */
.deepseek-header {
    padding: 1rem 1.5rem;
    background: var(--deepseek-header-bg);
    border-bottom: 1px solid var(--deepseek-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
}

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

.deepseek-brand svg {
    width: 28px;
    height: 28px;
    color: var(--deepseek-primary);
}

.deepseek-brand span {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--deepseek-text);
    letter-spacing: -0.02em;
}

.deepseek-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Model Selector */
.model-selector {
    position: relative;
}

#deepseek-model {
    padding: 0.5rem 2.5rem 0.5rem 1rem;
    background: var(--deepseek-surface);
    border: 1px solid var(--deepseek-border);
    border-radius: var(--deepseek-radius-sm);
    color: var(--deepseek-text);
    font-size: 0.9rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M10.293 3.293L6 7.586 1.707 3.293A1 1 0 00.293 4.707l5 5a1 1 0 001.414 0l5-5a1 1 0 10-1.414-1.414z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.7rem center;
    transition: var(--deepseek-transition);
}

#deepseek-model:hover {
    border-color: var(--deepseek-primary);
}

#deepseek-model:focus {
    outline: none;
    border-color: var(--deepseek-primary);
    box-shadow: 0 0 0 3px rgba(34, 113, 177, 0.1);
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    border: 1px solid var(--deepseek-border);
    background: var(--deepseek-surface);
    border-radius: var(--deepseek-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--deepseek-transition);
}

.theme-toggle:hover {
    background: var(--deepseek-bg);
    border-color: var(--deepseek-primary);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    color: var(--deepseek-text);
}

[data-theme="dark"] .sun-icon,
[data-theme="light"] .moon-icon {
    display: none;
}

/* Messages Container */
.deepseek-messages {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    background: var(--deepseek-chat-bg);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: var(--deepseek-text-secondary);
    animation: fadeIn 0.5s ease;
}

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

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.3;
}

.empty-state-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--deepseek-text);
    margin-bottom: 0.5rem;
}

.empty-state-text {
    font-size: 1rem;
    max-width: 400px;
    line-height: 1.6;
}

/* Quick Prompts */
.quick-prompts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-top: 2rem;
    max-width: 500px;
}

.quick-prompt {
    background: var(--deepseek-surface);
    border: 1px solid var(--deepseek-border);
    border-radius: var(--deepseek-radius-md);
    padding: 1rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--deepseek-transition);
    text-align: left;
}

.quick-prompt:hover {
    background: var(--deepseek-primary);
    color: white;
    border-color: var(--deepseek-primary);
    transform: translateY(-2px);
    box-shadow: var(--deepseek-shadow-md);
}

/* Messages */
.message {
    display: flex;
    gap: 1rem;
    animation: messageSlide 0.3s ease;
    max-width: 85%;
}

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

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

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.message.user .message-avatar {
    background: var(--deepseek-primary);
    color: white;
}

.message.assistant .message-avatar {
    background: var(--deepseek-secondary);
    color: white;
}

.message-content {
    background: var(--deepseek-message-assistant);
    border: 1px solid var(--deepseek-border);
    border-radius: var(--deepseek-radius-md);
    padding: 1rem 1.25rem;
    position: relative;
    box-shadow: var(--deepseek-shadow-sm);
}

.message.user .message-content {
    background: var(--deepseek-message-user);
    border-color: transparent;
}

.message-content::before {
    content: '';
    position: absolute;
    top: 12px;
    width: 0;
    height: 0;
    border: 6px solid transparent;
}

.message.assistant .message-content::before {
    left: -12px;
    border-right-color: var(--deepseek-border);
}

.message.assistant .message-content::after {
    content: '';
    position: absolute;
    top: 12px;
    left: -11px;
    width: 0;
    height: 0;
    border: 6px solid transparent;
    border-right-color: var(--deepseek-message-assistant);
}

.message.user .message-content::before {
    right: -12px;
    border-left-color: var(--deepseek-message-user);
}

/* Message Actions */
.message-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.message:hover .message-actions {
    opacity: 1;
}

.message-action-btn {
    background: transparent;
    border: none;
    color: var(--deepseek-text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: var(--deepseek-radius-sm);
    transition: var(--deepseek-transition);
}

.message-action-btn:hover {
    background: var(--deepseek-surface);
    color: var(--deepseek-primary);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--deepseek-message-assistant);
    border: 1px solid var(--deepseek-border);
    border-radius: var(--deepseek-radius-md);
    max-width: 100px;
    animation: messageSlide 0.3s ease;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--deepseek-primary);
    border-radius: 50%;
    animation: typingDot 1.4s infinite;
}

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

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

@keyframes typingDot {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.7;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* Input Area */
.deepseek-input {
    padding: 1.5rem;
    background: var(--deepseek-surface);
    border-top: 1px solid var(--deepseek-border);
}

.input-wrapper {
    position: relative;
    background: var(--deepseek-input-bg);
    border: 1px solid var(--deepseek-border);
    border-radius: var(--deepseek-radius-lg);
    transition: var(--deepseek-transition);
}

.input-wrapper:focus-within {
    border-color: var(--deepseek-primary);
    box-shadow: 0 0 0 3px rgba(34, 113, 177, 0.1);
}

#deepseek-prompt {
    width: 100%;
    min-height: 50px;
    max-height: 150px;
    padding: 1rem 4rem 1rem 1.25rem;
    border: none;
    background: transparent;
    color: var(--deepseek-text);
    resize: none;
    font-size: 1rem;
    line-height: 1.5;
    font-family: var(--deepseek-font);
}

#deepseek-prompt:focus {
    outline: none;
}

#deepseek-prompt::placeholder {
    color: var(--deepseek-text-secondary);
}

.input-actions {
    position: absolute;
    right: 0.5rem;
    bottom: 0.5rem;
    display: flex;
    gap: 0.5rem;
}

#deepseek-submit {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--deepseek-primary);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--deepseek-transition);
}

#deepseek-submit:hover:not(:disabled) {
    background: var(--deepseek-primary-hover);
    transform: scale(1.05);
}

#deepseek-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#deepseek-submit svg {
    width: 20px;
    height: 20px;
}

.input-info {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--deepseek-text-secondary);
}

/* New Chat Button */
.deepseek-reset {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--deepseek-surface);
    border: 1px solid var(--deepseek-border);
    color: var(--deepseek-text);
    padding: 0.5rem 1rem;
    border-radius: var(--deepseek-radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--deepseek-transition);
}

.deepseek-reset:hover {
    background: var(--deepseek-danger);
    color: white;
    border-color: var(--deepseek-danger);
}

.deepseek-reset svg {
    width: 16px;
    height: 16px;
}

/* Markdown Formatting */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.3;
}

.message-content h1 { font-size: 1.75rem; }
.message-content h2 { font-size: 1.5rem; }
.message-content h3 { font-size: 1.25rem; }
.message-content h4 { font-size: 1.1rem; }

.message-content p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

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

.message-content ul,
.message-content ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.message-content li {
    margin-bottom: 0.5rem;
}

.message-content blockquote {
    border-left: 4px solid var(--deepseek-primary);
    margin: 1rem 0;
    padding-left: 1rem;
    color: var(--deepseek-text-secondary);
    font-style: italic;
}

.message-content code {
    background: var(--deepseek-surface);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
}

.message-content pre {
    background: var(--deepseek-surface);
    border: 1px solid var(--deepseek-border);
    border-radius: var(--deepseek-radius-sm);
    padding: 1rem;
    overflow-x: auto;
    margin: 1rem 0;
}

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

.message-content a {
    color: var(--deepseek-primary);
    text-decoration: none;
}

.message-content a:hover {
    text-decoration: underline;
}

.message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.message-content th,
.message-content td {
    border: 1px solid var(--deepseek-border);
    padding: 0.5rem;
    text-align: left;
}

.message-content th {
    background: var(--deepseek-surface);
    font-weight: 600;
}

/* Scrollbar Styling */
.deepseek-messages::-webkit-scrollbar {
    width: 8px;
}

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

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

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

/* RTL Support */
[dir="rtl"] .message.user {
    flex-direction: row;
}

[dir="rtl"] .message.assistant {
    flex-direction: row-reverse;
}

[dir="rtl"] .message.assistant .message-content::before {
    left: auto;
    right: -12px;
    border-left-color: var(--deepseek-border);
    border-right-color: transparent;
}

[dir="rtl"] .message.assistant .message-content::after {
    left: auto;
    right: -11px;
    border-left-color: var(--deepseek-message-assistant);
    border-right-color: transparent;
}

[dir="rtl"] .message.user .message-content::before {
    right: auto;
    left: -12px;
    border-right-color: var(--deepseek-message-user);
    border-left-color: transparent;
}

[dir="rtl"] #deepseek-prompt {
    padding: 1rem 1.25rem 1rem 4rem;
}

[dir="rtl"] .input-actions {
    right: auto;
    left: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .deepseek-container {
        height: 100vh;
        max-height: none;
        border-radius: 0;
        border: none;
    }
    
    .deepseek-header {
        padding: 1rem;
    }
    
    .deepseek-brand span {
        display: none;
    }
    
    .deepseek-messages {
        padding: 1rem;
    }
    
    .message {
        max-width: 95%;
    }
    
    .quick-prompts {
        grid-template-columns: 1fr;
    }
    
    .deepseek-input {
        padding: 1rem;
    }
}

/* Print Styles */
@media print {
    .deepseek-header,
    .deepseek-input,
    .message-actions,
    .empty-state,
    .typing-indicator {
        display: none;
    }
    
    .deepseek-container {
        height: auto;
        box-shadow: none;
        border: none;
    }
    
    .deepseek-messages {
        height: auto;
        overflow: visible;
    }
}

/* Loading Animation */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Focus Styles for Accessibility */
*:focus-visible {
    outline: 2px solid var(--deepseek-primary);
    outline-offset: 2px;
}