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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    background: white;
    border-radius: 12px;
    padding: 20px 30px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

header h1 {
    font-size: 24px;
    color: #667eea;
}

#auth-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-input {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-input label {
    font-weight: 500;
    color: #555;
}

.user-input input {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    min-width: 200px;
}

.user-input input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

#telegram-login {
    min-height: 40px;
    min-width: 200px;
    position: relative;
    z-index: 1;
}

#telegram-login iframe {
    pointer-events: auto !important;
    z-index: 1 !important;
}

#user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

#user-name {
    font-weight: 500;
    color: #555;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card h2 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #667eea;
}

.select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    margin-bottom: 15px;
    transition: border-color 0.3s;
}

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

.select:disabled {
    background-color: #f5f5f5;
    cursor: not-allowed;
}

.editor-container {
    margin-bottom: 15px;
}

.editor {
    width: 100%;
    min-height: 400px;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.3s;
}

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

.editor.error {
    border-color: #e74c3c;
    background-color: #fee;
}

.editor.valid {
    border-color: #27ae60;
}

.error-message {
    margin-top: 10px;
    padding: 12px;
    background-color: #fee;
    border-left: 4px solid #e74c3c;
    border-radius: 4px;
    color: #c0392b;
    font-size: 14px;
}

.error-message.show {
    display: block;
}

.btn-primary, .btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    margin-right: 10px;
    margin-top: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: #f0f0f0;
    color: #333;
}

.btn-secondary:hover {
    background: #e0e0e0;
}

.editor-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.preview {
    min-height: 200px;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 8px;
    border: 2px solid #e0e0e0;
}

.preview .placeholder {
    color: #999;
    font-style: italic;
    text-align: center;
    padding: 40px;
}

.state-item {
    margin-bottom: 20px;
    padding: 15px;
    background: white;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.state-name {
    font-weight: bold;
    color: #667eea;
    margin-bottom: 10px;
    font-size: 18px;
}

.state-message {
    margin-bottom: 15px;
    line-height: 1.6;
    color: #555;
}

.buttons-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.button-item {
    padding: 8px 16px;
    background: #667eea;
    color: white;
    border-radius: 6px;
    font-size: 14px;
    display: inline-block;
}

.button-item::after {
    content: " → " attr(data-next-state);
    opacity: 0.8;
    font-size: 12px;
}

#login-prompt {
    text-align: center;
    padding: 40px;
}

#login-prompt h2 {
    margin-bottom: 15px;
}

#login-prompt p {
    color: #666;
    font-size: 16px;
}

.loading {
    text-align: center;
    padding: 20px;
    color: #667eea;
}

.success-message {
    margin-top: 10px;
    padding: 12px;
    background-color: #d4edda;
    border-left: 4px solid #27ae60;
    border-radius: 4px;
    color: #155724;
    font-size: 14px;
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        text-align: center;
    }

    .editor {
        min-height: 300px;
    }

    .editor-actions {
        flex-direction: column;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        margin-right: 0;
    }
}