/* DocGenius Main Layout Styles */

/* Global visibility control */
[hidden] {
    display: none !important;
}

/* App Container */
.app {
    display: flex;
    height: 100vh;
    width: 100%;
    overflow: hidden;
    background-color: var(--color-bg-primary);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-index-modal);
    transition: opacity var(--transition-normal);
}

.loading-overlay[aria-hidden="true"] {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    text-align: center;
    color: var(--color-text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--spacing-4);
    border: 3px solid var(--color-gray-200);
    border-top: 3px solid var(--color-primary-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Toast Notifications */
.toast {
    position: fixed;
    top: var(--spacing-6);
    right: var(--spacing-6);
    min-width: 300px;
    max-width: 400px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-error);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: translateX(calc(100% + var(--spacing-6)));
    transition: transform var(--transition-normal);
    z-index: var(--z-index-toast);
    pointer-events: none;
}

.toast.show {
    transform: translateX(0);
    pointer-events: auto;
}

.toast-success {
    border-left-color: var(--color-success);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
}

.toast-content .material-symbols-outlined {
    font-size: 20px;
    color: var(--color-error);
    flex-shrink: 0;
}

.toast-success .material-symbols-outlined {
    color: var(--color-success);
}

.toast-message {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
}

.toast-close {
    padding: var(--spacing-1);
    border-radius: var(--radius-base);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.toast-close:hover {
    color: var(--color-text-primary);
}

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 100vh;
    overflow: hidden;
    background-color: var(--color-bg-primary);
}

/* App Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 var(--spacing-6);
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: var(--z-index-sticky);
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    min-width: 0;
    flex: 1;
}

.mobile-menu-toggle {
    display: none;
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.app-title {
    min-width: 0;
}

.app-title h1 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0;
    white-space: nowrap;
}

.app-title p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin: 0;
    white-space: nowrap;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex-shrink: 0;
}

.header-action {
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.header-action:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

/* Chat Container */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

/* Welcome Screen */
.welcome-screen {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8);
    width: 100%;
    overflow-y: auto;
}

.welcome-content {
    text-align: center;
    max-width: 700px;
    width: 100%;
    margin: 0 auto;
}

.welcome-icon {
    margin: 0 auto var(--spacing-6);
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    border-radius: var(--radius-2xl);
    color: var(--color-white);
}

.welcome-icon .material-symbols-outlined {
    font-size: 40px;
}

.welcome-content h2 {
    margin-bottom: var(--spacing-4);
    color: var(--color-text-primary);
}

.welcome-content > p {
    margin-bottom: var(--spacing-8);
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
    width: 100%;
}

.feature-card {
    padding: var(--spacing-6);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-card .material-symbols-outlined {
    font-size: 32px;
    color: var(--color-primary-500);
    margin-bottom: var(--spacing-3);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2);
    color: var(--color-text-primary);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

.welcome-actions {
    display: flex;
    justify-content: center;
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.messages-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-6);
    scroll-behavior: smooth;
    display: flex;
    flex-direction: column;
}

.message {
    display: flex;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-6);
    max-width: 100%;
    width: 100%;
    align-items: flex-start;
}

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

.message.user .message-avatar {
    background-color: var(--color-primary-500);
    color: var(--color-white);
}

.message.assistant .message-avatar {
    background-color: var(--color-gray-200);
    color: var(--color-text-primary);
}

.message-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.message-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-1);
}

.message-author {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.message-time {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.message-text {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: pre-wrap;
}

.message-actions {
    display: flex;
    gap: var(--spacing-1);
    margin-top: var(--spacing-2);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

.message-action {
    padding: var(--spacing-1);
    border-radius: var(--radius-base);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.message-action:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

/* File Context */
.file-context {
    padding: var(--spacing-3) var(--spacing-6);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.context-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.context-header .material-symbols-outlined {
    font-size: 20px;
    color: var(--color-primary-500);
}

.context-filename {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    flex: 1;
}

.context-close {
    padding: var(--spacing-1);
    border-radius: var(--radius-base);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.context-close:hover {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

/* Chat Input */
.chat-input-container {
    padding: var(--spacing-4) var(--spacing-6);
    background-color: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

.chat-form {
    margin-bottom: var(--spacing-3);
}

.input-group {
    display: flex;
    gap: var(--spacing-3);
    align-items: flex-end;
}

.input-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: var(--spacing-4);
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.chat-input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-12) var(--spacing-3) var(--spacing-12);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    background-color: var(--color-bg-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    resize: none;
    min-height: 48px;
    max-height: 120px;
    transition: all var(--transition-fast);
    box-sizing: border-box;
}

.chat-input:focus {
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

.input-actions {
    position: absolute;
    right: var(--spacing-3);
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: var(--spacing-1);
}

.input-action {
    padding: var(--spacing-2);
    border-radius: var(--radius-base);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.input-action:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.send-btn {
    padding: var(--spacing-3);
    background-color: var(--color-primary-500);
    color: var(--color-white);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    min-width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.send-btn:hover:not(:disabled) {
    background-color: var(--color-primary-600);
    transform: scale(1.05);
}

.send-btn:disabled {
    background-color: var(--color-gray-300);
    transform: none;
}

/* Quick Actions */
.quick-actions {
    display: flex;
    gap: var(--spacing-2);
    flex-wrap: wrap;
    align-items: center;
}

.quick-action {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.quick-action:hover {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-primary-300);
    color: var(--color-text-primary);
}

.quick-action .material-symbols-outlined {
    font-size: 16px;
}

/* Typing Indicator */
.typing-indicator {
    padding: var(--spacing-4) var(--spacing-6);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.typing-dots {
    display: flex;
    gap: var(--spacing-1);
}

.typing-dots span {
    width: 6px;
    height: 6px;
    background-color: var(--color-text-muted);
    border-radius: var(--radius-full);
    animation: typing 1.4s infinite ease-in-out;
}

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

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

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
    z-index: var(--z-index-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay:not([hidden]) {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    max-height: 80vh;
    width: 90%;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.modal-overlay:not([hidden]) .modal {
    transform: scale(1);
}

.modal-content {
    display: flex;
    flex-direction: column;
    max-height: 80vh;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
    margin: 0;
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
}

.modal-close {
    padding: var(--spacing-2);
    border-radius: var(--radius-base);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.modal-body {
    padding: var(--spacing-6);
    overflow-y: auto;
    flex: 1;
}

/* Settings Styles */
.setting-group {
    margin-bottom: var(--spacing-6);
}

.setting-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.setting-select {
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
}

.setting-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-base);
    background-color: var(--color-bg-primary);
    cursor: pointer;
}

.setting-checkbox:checked {
    background-color: var(--color-primary-500);
    border-color: var(--color-primary-500);
}

/* Help Styles */
.help-section {
    margin-bottom: var(--spacing-6);
}

.help-section h3 {
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
}

.help-section ul {
    list-style: disc;
    padding-left: var(--spacing-6);
}

.help-section li {
    margin-bottom: var(--spacing-2);
    color: var(--color-text-secondary);
}

kbd {
    padding: var(--spacing-1) var(--spacing-2);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    font-family: monospace;
    font-size: var(--font-size-xs);
    color: var(--color-text-primary);
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary-500);
    color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-600);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-border);
    color: var(--color-text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-gray-300);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .app-header {
        padding: 0 var(--spacing-4);
    }
    
    .chat-container {
        height: calc(100vh - var(--header-height));
    }
    
    .chat-input-container {
        padding: var(--spacing-4);
    }
    
    .messages-container {
        padding: var(--spacing-4);
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }
    
    .quick-actions {
        justify-content: center;
    }
    
    .welcome-content {
        padding: var(--spacing-4);
        width: 100%;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .input-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .send-btn {
        align-self: flex-end;
        width: fit-content;
    }
    
    .toast {
        left: var(--spacing-4);
        right: var(--spacing-4);
        width: auto;
        min-width: 0;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .chat-input-container,
    .welcome-screen,
    .modal-overlay,
    .toast,
    .loading-overlay {
        display: none !important;
    }
    
    .main-content {
        width: 100% !important;
    }
}