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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 800px;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 2.5rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.input-section {
    margin-bottom: 30px;
}

label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #555;
    font-size: 1.1rem;
}

textarea {
    width: 100%;
    height: 150px;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 16px;
    font-family: inherit;
    resize: vertical;
    transition: all 0.3s ease;
    background: #fafbfc;
}

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

.button-group {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

button {
    flex: 1;
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

.clear-btn {
    background: #f8f9fa;
    color: #6c757d;
    border: 2px solid #dee2e6;
}

.clear-btn:hover {
    background: #e9ecef;
    transform: translateY(-2px);
}

.results {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 25px;
    margin-top: 20px;
    display: none;
    animation: fadeIn 0.5s ease-in;
}

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

.sentiment-badge {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.positive {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: white;
}

.negative {
    background: linear-gradient(135deg, #fa709a, #fee140);
    color: white;
}

.neutral {
    background: linear-gradient(135deg, #a8edea, #fed6e3);
    color: #333;
}

.confidence-bar {
    width: 100%;
    height: 20px;
    background: #e9ecef;
    border-radius: 10px;
    overflow: hidden;
    margin: 15px 0;
}

.confidence-fill {
    height: 100%;
    border-radius: 10px;
    transition: width 0.8s ease, background 0.3s ease;
}

.details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.detail-card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.detail-value {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    display: block;
}

.detail-label {
    color: #666;
    font-size: 0.9rem;
    margin-top: 5px;
}

.loading {
    display: none;
    text-align: center;
    margin: 20px 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

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

.example-texts {
    margin-top: 20px;
    padding: 20px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 12px;
}

.example-texts h3 {
    color: #333;
    margin-bottom: 15px;
}

.example-btn {
    display: inline-block;
    margin: 5px;
    padding: 8px 15px;
    background: white;
    color: #667eea;
    border: 1px solid #667eea;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

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