/* Professional Chat Styles - EPSF Sinai */
/* Following the established design system and theme */

/* ===== CHAT PAGE SPECIFIC STYLES ===== */

/* Hero Section for Chat */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8) var(--spacing-4);
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    z-index: 2;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

/* AI Assistant Header */
.ai-assistant-header {
    margin-bottom: var(--spacing-8);
    animation: slideInUp 0.8s ease-out;
}

.ai-logo-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-6);
}

.ai-logo {
    width: 120px;
    height: 120px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    box-shadow: var(--epsf-glow-strong);
    animation: pulse 2s infinite;
}

.ai-logo i {
    font-size: 3rem;
    color: var(--primary-white);
    animation: spin 3s linear infinite;
}

.ai-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 160px;
    height: 160px;
    background: var(--primary-gradient);
    border-radius: 50%;
    opacity: 0.3;
    filter: blur(20px);
    animation: pulse 2s infinite reverse;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-4);
    letter-spacing: -0.02em;
}

.ai-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-6);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-12);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Chat Interface */
.chat-interface {
    background: var(--glass-background);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
    animation: fadeIn 1s ease-out 0.3s both;
}

/* Chat Header */
.chat-header {
    background: var(--primary-gradient);
    padding: var(--spacing-6) var(--spacing-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-4);
}

.chat-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    color: var(--primary-white);
    font-weight: 500;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--success-green);
    box-shadow: 0 0 10px var(--success-green);
    animation: pulse 2s infinite;
}

.status-indicator.online {
    background: var(--success-green);
    box-shadow: 0 0 10px var(--success-green);
}

.chat-features {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.feature-badge {
    background: rgba(255, 255, 255, 0.2);
    color: var(--primary-white);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--border-radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-badge i {
    font-size: 0.75rem;
}

/* Model Selection */
.model-selection {
    background: var(--card-background);
    padding: var(--spacing-6) var(--spacing-8);
    border-bottom: 1px solid var(--border-color);
}

.model-tabs {
    display: flex;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
}

.model-tab {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex: 1;
    min-width: 120px;
    justify-content: center;
}

.model-tab:hover {
    background: var(--bg-accent-light);
    border-color: var(--epsf-blue-light);
    color: var(--epsf-blue);
}

.model-tab.active {
    background: var(--epsf-blue);
    color: var(--primary-white);
    border-color: var(--epsf-blue);
    box-shadow: var(--epsf-glow);
}

.model-tab i {
    font-size: 0.875rem;
}

.model-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-style: italic;
}

/* Chat Messages */
.chat-messages {
    height: 400px;
    overflow-y: auto;
    padding: var(--spacing-6) var(--spacing-8);
    background: var(--card-background);
    scroll-behavior: smooth;
}

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

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

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

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--epsf-blue-light);
}

/* Message Styles */
.message {
    margin-bottom: var(--spacing-6);
    animation: slideInUp 0.3s ease-out;
}

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

.message.assistant {
    text-align: left;
}

.message-content {
    display: inline-block;
    max-width: 80%;
    padding: var(--spacing-4) var(--spacing-5);
    border-radius: var(--border-radius-lg);
    position: relative;
    word-wrap: break-word;
}

.message.user .message-content {
    background: var(--epsf-blue);
    color: var(--primary-white);
    border-bottom-right-radius: var(--border-radius-sm);
}

.message.assistant .message-content {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-bottom-left-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-2);
    opacity: 0.7;
}

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

/* Typing Indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-5);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border-bottom-left-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    max-width: 80px;
    margin-bottom: var(--spacing-6);
}

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

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }
.typing-dot:nth-child(3) { animation-delay: 0s; }

@keyframes typingPulse {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Chat Input Section */
.chat-input-section {
    background: var(--card-background);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-6) var(--spacing-8);
}

/* Upload Area */
.upload-area {
    background: var(--bg-accent-light);
    border: 2px dashed var(--epsf-blue-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-8);
    text-align: center;
    margin-bottom: var(--spacing-4);
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    background: var(--bg-accent);
    border-color: var(--epsf-blue);
}

.upload-area.dragover {
    background: var(--bg-accent);
    border-color: var(--epsf-blue);
    transform: scale(1.02);
}

.upload-content i {
    font-size: 3rem;
    color: var(--epsf-blue);
    margin-bottom: var(--spacing-4);
}

.upload-content p {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
    font-weight: 500;
}

.upload-content span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Uploaded Files */
.uploaded-files {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.files-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-3);
    font-weight: 500;
    color: var(--text-primary);
}

.clear-btn {
    background: none;
    border: none;
    color: var(--error-red);
    font-size: 0.875rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
}

.clear-btn:hover {
    background: var(--error-red);
    color: var(--primary-white);
}

.files-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.file-item {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-3);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    max-width: 200px;
}

.file-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-accent-light);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--epsf-blue);
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-1);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-size {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.remove-file {
    background: none;
    border: none;
    color: var(--error-red);
    cursor: pointer;
    padding: var(--spacing-1);
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
}

.remove-file:hover {
    background: var(--error-red);
    color: var(--primary-white);
}

/* Chat Form */
.chat-form {
    position: relative;
}

.input-wrapper {
    display: flex;
    align-items: center;
    background: var(--card-background);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.input-wrapper:focus-within {
    border-color: var(--epsf-blue);
    box-shadow: var(--epsf-glow);
}

.input-controls {
    display: flex;
    gap: var(--spacing-2);
    padding: 0 var(--spacing-3);
}

.upload-btn,
.voice-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: var(--spacing-2);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-btn:hover,
.voice-btn:hover {
    background: var(--bg-accent-light);
    color: var(--epsf-blue);
}

.upload-btn.recording,
.voice-btn.recording {
    background: var(--error-red);
    color: var(--primary-white);
    animation: pulse 1s infinite;
}

.chat-input {
    flex: 1;
    border: none;
    outline: none;
    padding: var(--spacing-4) var(--spacing-3);
    font-size: 1rem;
    background: transparent;
    color: var(--text-primary);
    resize: none;
    min-height: 24px;
    max-height: 120px;
}

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

.chat-send-btn {
    background: var(--epsf-blue);
    color: var(--primary-white);
    border: none;
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: var(--spacing-2);
    min-width: 48px;
    min-height: 48px;
}

.chat-send-btn:hover:not(:disabled) {
    background: var(--epsf-blue-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.chat-send-btn:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.6;
}

.chat-send-btn.disabled {
    background: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    opacity: 0.6;
}

.chat-send-btn.loading {
    background: var(--epsf-blue);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.chat-send-btn.loading i {
    animation: spin 1s linear infinite;
}

/* Voice Recording */
.voice-recording {
    background: var(--error-red);
    color: var(--primary-white);
    padding: var(--spacing-4);
    border-radius: var(--border-radius-lg);
    margin-top: var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: slideInUp 0.3s ease-out;
}

.recording-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-weight: 500;
}

.recording-indicator i {
    animation: pulse 1s infinite;
}

.stop-recording-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--primary-white);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
}

.stop-recording-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Chat Suggestions */
.chat-suggestions {
    margin-top: var(--spacing-6);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    align-items: center;
}

.suggestion-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-right: var(--spacing-2);
}

.suggestion-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--border-radius-full);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.suggestion-btn:hover {
    background: var(--epsf-blue);
    color: var(--primary-white);
    border-color: var(--epsf-blue);
    transform: translateY(-1px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .chat-interface {
        margin: 0 var(--spacing-4);
    }
    
    .chat-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-4);
    }
    
    .chat-features {
        justify-content: flex-start;
    }
    
    .model-tabs {
        justify-content: center;
    }
    
    .model-tab {
        flex: none;
        min-width: auto;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-6) var(--spacing-3);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .ai-logo {
        width: 100px;
        height: 100px;
    }
    
    .ai-logo i {
        font-size: 2.5rem;
    }
    
    .ai-glow {
        width: 140px;
        height: 140px;
    }
    
    .chat-interface {
        margin: 0 var(--spacing-2);
        border-radius: var(--border-radius-lg);
    }
    
    .chat-header,
    .model-selection,
    .chat-messages,
    .chat-input-section {
        padding: var(--spacing-4) var(--spacing-6);
    }
    
    .chat-messages {
        height: 300px;
    }
    
    .message-content {
        max-width: 90%;
    }
    
    .model-tabs {
        flex-direction: column;
    }
    
    .model-tab {
        justify-content: flex-start;
    }
    
    .chat-features {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .feature-badge {
        width: 100%;
        justify-content: center;
    }
    
    .input-controls {
        padding: 0 var(--spacing-2);
    }
    
    .chat-suggestions {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .suggestion-label {
        margin-right: 0;
        margin-bottom: var(--spacing-2);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .ai-subtitle {
        font-size: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .chat-interface {
        margin: 0 var(--spacing-1);
        border-radius: var(--border-radius);
    }
    
    .chat-header,
    .model-selection,
    .chat-messages,
    .chat-input-section {
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .chat-messages {
        height: 250px;
    }
    
    .message-content {
        max-width: 95%;
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .input-wrapper {
        flex-direction: column;
        gap: var(--spacing-2);
    }
    
    .input-controls {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-2);
    }
    
    .chat-input {
        width: 100%;
        text-align: center;
    }
    
    .chat-send-btn {
        width: 100%;
        margin-left: 0;
        margin-top: var(--spacing-2);
    }
    
    .upload-area {
        padding: var(--spacing-6);
    }
    
    .upload-content i {
        font-size: 2.5rem;
    }
    
    .files-list {
        flex-direction: column;
    }
    
    .file-item {
        max-width: none;
    }
}

/* Loading States */
.chat-interface.loading {
    opacity: 0.7;
    pointer-events: none;
}

.chat-interface.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--epsf-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Empty State */
.chat-messages:empty::before {
    content: 'Start a conversation with EPSF SINAI AI';
    display: block;
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    padding: var(--spacing-8);
}

/* File Preview Styles */
.file-preview {
    margin-top: var(--spacing-3);
    border-radius: var(--border-radius);
    overflow: hidden;
    max-width: 300px;
}

.file-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.file-preview audio {
    width: 100%;
    height: 40px;
}

/* Error States */
.message.error .message-content {
    background: var(--error-red);
    color: var(--primary-white);
}

.message.warning .message-content {
    background: var(--warning-orange);
    color: var(--primary-white);
}

.message.success .message-content {
    background: var(--success-green);
    color: var(--primary-white);
}

/* Animation Keyframes */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

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