body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    min-height: 100vh;
    color: #2c3e50;
    position: relative;
}

.container {
    background: rgba(213, 249, 249, 0.95);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    animation: slideIn 0.8s cubic-bezier(0.23, 1, 0.32, 1);
    position: relative;
}

@keyframes slideIn {
    0% { opacity: 0; transform: translateY(-20px); }
    100% { opacity: 1; transform: translateY(0); }
}

h1 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2.5em;
    animation: fadeInUp 0.8s ease;
    position: relative;
}

h1::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 3px;
    background: #3498db;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

.analysis-count {
    position: absolute;
    top: 20px;
    right: 20px;
    background: #3498db;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9em;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(52, 152, 219, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(52, 152, 219, 0); }
    100% { box-shadow: 0 0 0 0 rgba(52, 152, 219, 0); }
}

.file-input-container {
    text-align: center;
    margin: 25px 0;
    animation: fadeIn 1s ease;
}

.file-input {
    display: none;
}

.file-label {
    padding: 15px 30px;
    background: linear-gradient(135deg, #2c3e50, #3498db);
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    font-weight: 500;
    gap: 10px;
}

.file-label:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 5px 15px rgba(44, 62, 80, 0.3);
}

.analyze-btn {
    display: block;
    margin: 30px auto 0;
    padding: 15px 40px;
    background: linear-gradient(135deg, #3498db, #2c3e50);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.analyze-btn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 8px 15px rgba(52, 152, 219, 0.3);
}

.file-name {
    margin-top: 10px;
    color: #3498db;
    font-size: 0.9em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

#loader {
    display: none;
    text-align: center;
    margin: 40px 0;
    position: relative;
    color: #3498db;
}

#loader::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    border: 4px solid #3498db;
    border-top: 4px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 10px;
}

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

.result-container {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.result-container.show {
    opacity: 1;
    transform: translateY(0);
}

.score-card {
    background: #cff0f9;
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.score-card:hover {
    transform: translateY(-5px);
}

.score-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.score-icon {
    font-size: 1.5em;
    color: #3498db;
}

.score-value {
    font-size: 2em;
    font-weight: bold;
    color: #2c3e50;
}

.tips {
    margin-top: 20px;
    padding: 15px;
    background: #ecf0f1;
    border-left: 5px solid #3498db;
    font-size: 1em;
    border-radius: 8px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.score-table {
    width: 100%;
    margin-top: 20px;
    border-collapse: collapse;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.score-table th, .score-table td {
    border: 1px solid #3498db;
    padding: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.score-table th {
    background-color: #3498db;
    color: white;
}

.score-table tr:hover {
    background-color: #f8f9fa;
}

.animated-icon {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-15px); }
    60% { transform: translateY(-10px); }
}

#footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    color: #000;
    font-size: 12px;
    text-align: center;
    padding: 10px;
    background: rgba(246, 244, 244, 0.8);
}