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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 10px;
}

.logo i {
    font-size: 2.5rem;
    color: #4ade80;
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.tagline {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Main Content */
.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* Input Section */
.input-section {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

.input-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: #374151;
    font-size: 1.1rem;
}

.input-label i {
    color: #667eea;
    font-size: 1.2rem;
}

.notes-input {
    width: 100%;
    padding: 20px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: all 0.3s ease;
    background: #f9fafb;
}

.notes-input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.notes-input::placeholder {
    color: #9ca3af;
    font-style: italic;
}

.input-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.generate-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    justify-content: center;
    min-width: 200px;
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

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

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

.clear-btn {
    background: #f3f4f6;
    color: #374151;
    border: 2px solid #e5e7eb;
    padding: 15px 25px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.clear-btn:hover {
    background: #e5e7eb;
    border-color: #d1d5db;
}

/* Output Section */
.output-section {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f3f4f6;
}

.output-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #374151;
    font-size: 1.2rem;
    font-weight: 600;
}

.output-header i {
    color: #10b981;
    font-size: 1.3rem;
}

.copy-btn {
    background: #10b981;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-btn:hover:not(:disabled) {
    background: #059669;
    transform: translateY(-1px);
}

.copy-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.output-content {
    flex: 1;
    min-height: 300px;
    padding: 20px;
    background: #f9fafb;
    border-radius: 12px;
    border: 2px solid #e5e7eb;
    font-size: 1rem;
    line-height: 1.7;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-y: auto;
}

.placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #9ca3af;
    text-align: center;
}

.placeholder i {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

.placeholder p {
    font-size: 1.1rem;
    font-style: italic;
}

/* Loading State */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    color: white;
}

.loading.hidden {
    display: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid #4ade80;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

.loading p {
    font-size: 1.1rem;
    text-align: center;
    max-width: 300px;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    color: white;
    margin-top: auto;
}

.footer p {
    margin-bottom: 10px;
    opacity: 0.9;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-link {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-link:hover {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .input-section,
    .output-section {
        padding: 20px;
    }
    
    .input-actions {
        flex-direction: column;
    }
    
    .generate-btn,
    .clear-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Success/Error States */
.success {
    border-color: #10b981 !important;
    background: #f0fdf4 !important;
}

.error {
    border-color: #ef4444 !important;
    background: #fef2f2 !important;
}

/* Animation for content updates */
.output-content {
    transition: all 0.3s ease;
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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