/* UniPub - Bulletproof Dark Theme Layout */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --header-height: 70px;
    --pane-gap: 1px;
    --editor-width: 380px;
    --ai-width: 360px;
    
    /* Dark Theme Colors */
    --bg-main: #0a0e1a;
    --bg-pane: #151923;
    --bg-header: #1c2333;
    --border: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --gradient: linear-gradient(135deg, #667eea, #764ba2);
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-main);
    color: var(--text-primary);
}

/* Fixed Header */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-left: 1rem;
}

.credits-badge {
    background: var(--gradient);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
}

/* Main Layout Container - BULLETPROOF */
.app-main {
    position: fixed !important;
    top: var(--header-height) !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    display: flex !important;
    flex-direction: row !important;
    gap: var(--pane-gap) !important;
    background: var(--bg-main) !important;
}

/* Fixed Width Panes */
.pane {
    background: var(--bg-pane);
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important;
    position: relative !important;
}

.editor-pane {
    width: var(--editor-width) !important;
    flex-shrink: 0 !important;
    flex-grow: 0 !important;
}

.preview-pane {
    flex: 1 1 auto !important;
    min-width: 400px !important;
}

.ai-pane {
    width: var(--ai-width) !important;
    flex-shrink: 0 !important;
    flex-grow: 0 !important;
}

/* Pane Headers */
.pane-header {
    height: 50px;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border);
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.pane-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.pane-title i {
    color: var(--accent);
}

/* Pane Content - Scrollable */
.pane-content {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1.5rem;
}

/* Editor Styles */
.quick-upload {
    border: 2px dashed var(--border);
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 1rem;
}

.quick-upload:hover {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.05);
}

.quick-upload.drag-over {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.1);
}

.editor-controls {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    background: var(--bg-header);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.btn-small:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.content-editor {
    width: 100%;
    min-height: 200px;
    max-height: 400px;
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1rem;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    resize: vertical;
}

.content-editor:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Transform Buttons */
.transform-content {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.transform-content h4 {
    margin-bottom: 1rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.transform-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.transform-btn {
    padding: 0.875rem 1rem;
    background: var(--bg-header);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.transform-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    transform: translateX(4px);
}

.transform-btn i {
    font-size: 1.1rem;
    color: var(--accent);
}

.transform-btn:hover i {
    color: white;
}

/* Preview Styles */
.preview-controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
}

.format-selector {
    padding: 0.5rem;
    background: var(--bg-header);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.export-btn {
    padding: 0.5rem 1rem;
    background: var(--accent);
    border: none;
    color: white;
    border-radius: 0.375rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.export-btn:hover {
    background: var(--accent-hover);
}

.preview-area {
    background: white;
    color: #1a202c;
    border-radius: 0.5rem;
    padding: 2rem;
    min-height: 400px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.preview-placeholder {
    text-align: center;
    padding: 3rem;
    color: #64748b;
}

/* AI Chat Styles */
.chat-area {
    flex: 1;
    overflow-y: auto;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--bg-main);
    border-radius: 0.5rem;
}

.chat-message {
    margin-bottom: 1rem;
    padding: 1rem;
    border-radius: 0.5rem;
    line-height: 1.6;
}

.chat-message.user {
    background: var(--accent);
    color: white;
    margin-left: 2rem;
}

.chat-message.assistant {
    background: var(--bg-header);
    margin-right: 2rem;
    border: 1px solid var(--border);
}

.chat-input-area {
    display: flex;
    gap: 0.5rem;
}

.chat-input {
    flex: 1;
    padding: 0.75rem;
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.chat-input:focus {
    outline: none;
    border-color: var(--accent);
}

.send-btn {
    padding: 0.75rem 1.5rem;
    background: var(--accent);
    border: none;
    color: white;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.send-btn:hover {
    background: var(--accent-hover);
}

/* Modal Styles - Hidden by default */
.export-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: none !important;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

/* Modal base styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal.active {
    display: flex !important;
}

.modal .modal-content {
    background: var(--bg-pane);
    border-radius: 0.75rem;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    border: 1px solid var(--border);
    position: relative;
    z-index: 2001;
}

.modal .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal .modal-header h3 {
    font-size: 1.5rem;
}

.modal-close, .close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem;
    border-radius: 0.25rem;
}

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

.export-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.export-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.export-option:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
}

.export-option i {
    font-size: 1.5rem;
    color: var(--accent);
}

.export-option span {
    font-weight: 500;
}

.export-option small {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.original-close-modal {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
}

.export-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.export-option {
    padding: 2rem 1rem;
    background: var(--bg-header);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.export-option:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.export-option i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.loading-overlay.active {
    display: flex;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top: 3px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.loading-text {
    color: var(--text-primary);
    font-weight: 500;
}

/* Notification */
.notification {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    background: var(--accent);
    color: white;
    font-weight: 500;
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 4000;
}

.notification.show {
    transform: translateX(0);
}

.notification.error {
    background: #ef4444;
}

.notification.success {
    background: #10b981;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    :root {
        --editor-width: 320px;
        --ai-width: 300px;
    }
}

@media (max-width: 768px) {
    .app-main {
        flex-direction: column !important;
    }
    
    .editor-pane,
    .preview-pane,
    .ai-pane {
        width: 100% !important;
        height: 33.33vh !important;
        min-width: unset !important;
    }
    
    .header-center {
        display: none;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-main);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

/* Ensure nothing can break the layout */
* {
    max-width: 100%;
    overflow-wrap: break-word;
}

input[type="file"] {
    display: none;
}