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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

.tabs {
    display: flex;
    background: #f7f7f7;
    border-bottom: 2px solid #e0e0e0;
}

.tab-btn {
    flex: 1;
    padding: 16px;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: #666;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: #ececec;
}

.tab-btn.active {
    background: white;
    color: #667eea;
    border-bottom: 3px solid #667eea;
}

.tab-content {
    display: none;
    padding: 40px;
}

.tab-content.active {
    display: block;
}

.form-section h2 {
    margin-bottom: 24px;
    color: #333;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-group textarea,
.form-group input[type="url"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group textarea:focus,
.form-group input[type="url"]:focus {
    outline: none;
    border-color: #667eea;
}

.form-group.checkbox {
    display: flex;
    align-items: center;
}

.form-group.checkbox label {
    display: flex;
    align-items: center;
    margin: 0;
    cursor: pointer;
}

.form-group.checkbox input {
    margin-right: 8px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

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

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
}

.output-section {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 2px solid #e0e0e0;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.output-header h3 {
    color: #333;
}

.output-actions {
    display: flex;
    gap: 8px;
}

.day-info {
    background: #f0f4ff;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    color: #667eea;
    font-weight: 600;
}

.content-box {
    background: #f9f9f9;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 20px;
    white-space: pre-wrap;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    max-height: 600px;
    overflow-y: auto;
}

.content-box-plain {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 30px;
    white-space: pre-wrap;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 1rem;
    line-height: 1.8;
    max-height: 600px;
    overflow-y: auto;
    color: #333;
}

.file-saved {
    margin-top: 12px;
    color: #28a745;
    font-weight: 600;
}

.history-list {
    display: grid;
    gap: 16px;
}

.history-item {
    background: #f9f9f9;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.history-item:hover {
    border-color: #667eea;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.1);
}

.history-item h4 {
    color: #333;
    margin-bottom: 8px;
}

.history-item p {
    color: #666;
    font-size: 0.9rem;
}

.loading {
    text-align: center;
    color: #999;
    padding: 40px;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loading-overlay p {
    color: white;
    font-size: 1.2rem;
    margin-top: 20px;
}

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

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

.error {
    background: #fee;
    border: 2px solid #fcc;
    color: #c33;
    padding: 12px 16px;
    border-radius: 8px;
    margin-top: 16px;
}

.subtitle-text {
    color: #666;
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.info-text {
    color: #667eea;
    font-size: 0.9rem;
    margin-top: 12px;
    font-weight: 600;
}

select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: white;
    cursor: pointer;
    transition: border-color 0.3s;
}

select:focus {
    outline: none;
    border-color: #667eea;
}

.memory-item {
    background: #f9f9f9;
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 12px;
    border: 1px solid #e0e0e0;
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.tag {
    background: #667eea;
    color: white;
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.tag-remove {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.tag-remove:hover {
    color: #ffcccc;
}

.btn-remove {
    background: #ff4444;
    color: white;
    border: none;
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

.btn-remove:hover {
    background: #cc0000;
}

h3 {
    color: #333;
    margin-top: 24px;
    margin-bottom: 16px;
    font-size: 1.2rem;
}