/* ========================================
   AI Automation Canvas - Modern Styles 2025
   ======================================== */

/* CSS Variables - Color Palette - PMLean Tech Brand */
:root {
    /* PMLean Brand Colors */
    --pmlean-cyan: #00d9ff;
    --pmlean-blue: #5b7cff;
    --pmlean-purple: #a855f7;
    --pmlean-orange: #ff6b35;
    --pmlean-gradient: linear-gradient(135deg, #00d9ff 0%, #5b7cff 35%, #a855f7 65%, #ff6b35 100%);
    
    /* Primary Colors - Based on PMLean */
    --primary-blue: #5b7cff;
    --primary-blue-light: #7d93ff;
    --primary-blue-dark: #4a63d9;
    --teal: #00d9ff;
    --teal-light: #33e1ff;
    --teal-dark: #00b8d9;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Accent Colors - PMLean Palette */
    --accent-purple: #a855f7;
    --accent-green: #10b981;
    --accent-orange: #ff6b35;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--pmlean-gradient);
    min-height: 100vh;
    padding: var(--spacing-lg);
    color: var(--gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

/* Header */
.header {
    background: #000000;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0, 217, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(168, 85, 247, 0.05) 0%, transparent 50%);
    color: var(--white);
    padding: var(--spacing-xl);
    position: relative;
    border-bottom: 4px solid transparent;
    border-image: var(--pmlean-gradient) 1;
}

.header-content {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* Language Selector */
.language-selector {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    gap: var(--spacing-xs);
    z-index: 10;
}

.lang-btn {
    width: 40px;
    height: 28px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    cursor: pointer;
    padding: 2px;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.lang-btn img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 2px;
}

.lang-btn:hover {
    border-color: var(--pmlean-cyan);
    background: rgba(0, 217, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 217, 255, 0.3);
}

.lang-btn.active {
    border-color: var(--pmlean-cyan);
    background: rgba(0, 217, 255, 0.15);
    box-shadow: 0 0 0 2px rgba(0, 217, 255, 0.2);
}

.lang-btn:active {
    transform: translateY(0);
}

/* Auth Button */
.btn-auth {
    width: 40px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1rem;
    margin-left: var(--spacing-xs);
}

.btn-auth:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-auth:active {
    transform: translateY(0);
}

.btn-auth.logged-in {
    background: rgba(16, 185, 129, 0.2);
    border-color: rgba(16, 185, 129, 0.5);
}

.btn-auth.logged-in:hover {
    background: rgba(16, 185, 129, 0.3);
    border-color: rgba(16, 185, 129, 0.7);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
}

.logo i {
    font-size: 2.5rem;
    animation: pulse 2s ease-in-out infinite;
}

.logo img {
    height: 50px;
    width: auto;
    filter: drop-shadow(0 4px 8px rgba(0, 217, 255, 0.3));
    transition: filter 0.3s ease;
}

.logo img:hover {
    filter: drop-shadow(0 6px 12px rgba(0, 217, 255, 0.5)) 
            drop-shadow(0 0 20px rgba(168, 85, 247, 0.3));
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    background: linear-gradient(135deg, #ffffff 0%, rgba(0, 217, 255, 0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
    white-space: nowrap;
}

.btn i {
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-blue);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

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

.btn-accent:hover {
    background: #7c3aed;
    transform: translateY(-2px);
}

.btn-info {
    background: var(--teal);
    color: var(--white);
}

.btn-info:hover {
    background: var(--teal-dark);
    transform: translateY(-2px);
}

/* Auto-save Indicator */
.autosave-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(16, 185, 129, 0.2);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.autosave-indicator.show {
    opacity: 1;
}

.autosave-indicator i {
    color: var(--accent-green);
}

/* Project Title Section */
.project-title-section {
    padding: var(--spacing-xl);
    border-bottom: 2px solid var(--gray-100);
    background: var(--gray-50);
}

.project-title-section label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-title-input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--gray-900);
    transition: all var(--transition-normal);
}

.project-title-input:focus {
    outline: none;
    border-color: var(--pmlean-cyan);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.project-title-input::placeholder {
    color: var(--gray-400);
    font-weight: 400;
}

/* Canvas Grid */
.canvas-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
}

/* Canvas Sections */
.canvas-section {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.canvas-section:hover {
    border-color: var(--pmlean-cyan);
    box-shadow: 0 10px 25px -5px rgba(0, 217, 255, 0.2), 0 4px 6px -2px rgba(91, 124, 255, 0.1);
    transform: translateY(-2px);
}

/* Section Header */
.section-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    border-bottom: 2px solid var(--gray-100);
}

.section-number {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    background: var(--pmlean-gradient);
    color: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    box-shadow: var(--shadow-md);
}

.section-title h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
    letter-spacing: -0.025em;
}

.section-subtitle {
    font-size: 0.85rem;
    color: var(--gray-600);
    line-height: 1.4;
}

/* Section Content */
.section-content {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
}

.section-with-questions {
    gap: var(--spacing-md);
}

/* Question Fields */
.question-field {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.question-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.question-label::before {
    content: "•";
    color: var(--pmlean-cyan);
    font-size: 1.2rem;
    font-weight: bold;
}

.editable-field {
    width: 100%;
    min-height: 200px;
    padding: var(--spacing-sm);
    border: 2px dashed var(--gray-200);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--gray-800);
    resize: vertical;
    transition: all var(--transition-normal);
    background: var(--gray-50);
    flex: 1;
}

.editable-field:hover {
    border-color: var(--pmlean-blue);
    background: var(--white);
}

.editable-field:focus {
    outline: none;
    border-style: solid;
    border-color: var(--pmlean-cyan);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.editable-field::placeholder {
    color: var(--gray-400);
    font-style: italic;
}

.editable-field:not(:placeholder-shown) {
    border-style: solid;
    background: var(--white);
}

/* Editable Field Small (for individual questions) */
.editable-field-small {
    width: 100%;
    min-height: 80px;
    padding: var(--spacing-sm);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--gray-800);
    resize: vertical;
    transition: all var(--transition-normal);
    background: var(--white);
}

.editable-field-small:hover {
    border-color: var(--pmlean-blue);
    box-shadow: 0 2px 8px rgba(91, 124, 255, 0.1);
}

.editable-field-small:focus {
    outline: none;
    border-color: var(--pmlean-cyan);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.editable-field-small::placeholder {
    color: var(--gray-400);
    font-style: italic;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--gray-900) 0%, #0a0e1a 100%);
    color: var(--white);
    padding: var(--spacing-lg);
    text-align: center;
    border-top: 3px solid transparent;
    border-image: var(--pmlean-gradient) 1;
}

.footer p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.footer-note {
    font-size: 0.85rem;
    opacity: 0.7;
    color: var(--pmlean-cyan);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    animation: fadeIn var(--transition-normal);
}

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

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    position: relative;
    animation: slideUp var(--transition-normal);
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close-modal {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 2rem;
    color: var(--gray-400);
    cursor: pointer;
    transition: color var(--transition-fast);
    line-height: 1;
}

.close-modal:hover {
    color: var(--gray-900);
}

.modal-content h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.modal-content h2 i {
    background: var(--pmlean-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.share-link-container {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.share-link-container input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.share-note {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--gray-600);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .canvas-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
    }
    
    .header-content {
        text-align: center;
    }
    
    .logo {
        flex-direction: column;
        text-align: center;
    }
    
    .logo img {
        margin: 0 auto;
    }
    
    .logo h1 {
        font-size: 1.8rem;
        text-align: center;
        width: 100%;
        display: block;
    }
    
    .subtitle {
        font-size: 0.9rem;
        text-align: center;
        margin-top: var(--spacing-xs);
        width: 100%;
        display: block;
    }
    
    .header {
        padding: var(--spacing-lg);
    }
    
    .language-selector {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .lang-btn {
        width: 36px;
        height: 25px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .project-title-input {
        font-size: 1.2rem;
    }
    
    .canvas-grid {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .section-number {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.2rem;
    }
    
    .section-title h2 {
        font-size: 1rem;
    }
    
    .editable-field {
        min-height: 150px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .logo {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .logo i {
        font-size: 2rem;
    }
    
    .modal-content {
        padding: var(--spacing-lg);
    }
    
    .share-link-container {
        flex-direction: column;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        padding: 0;
    }
    
    .header {
        background: white;
        color: black;
        border-bottom: 3px solid var(--gray-900);
    }
    
    .action-buttons,
    .autosave-indicator,
    .footer {
        display: none;
    }
    
    .canvas-section {
        page-break-inside: avoid;
    }
    
    .editable-field {
        border-style: solid;
        background: white;
    }
}

/* Accessibility */
.btn:focus-visible,
.project-title-input:focus-visible,
.editable-field:focus-visible {
    outline: 3px solid var(--pmlean-cyan);
    outline-offset: 2px;
}

/* Loading Animation */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading {
    animation: spin 1s linear infinite;
}