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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1b1b32 0%, #2d2d5a 100%);
    min-height: 100vh;
    color: #fff;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

.input-section {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 3rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.input-group {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

label {
    font-weight: bold;
    font-size: 1.1rem;
}

input {
    flex: 1;
    min-width: 300px;
    padding: 1rem;
    border: none;
    border-radius: 10px;
    background: rgba(10, 10, 35, 0.8);
    color: white;
    font-size: 1rem;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

input:focus {
    outline: none;
    border-color: #4ecdc4;
    box-shadow: 0 0 20px rgba(78, 205, 196, 0.3);
}

input::placeholder {
    color: #a0a0c0;
}

button {
    padding: 1rem 2rem;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
    border: none;
    border-radius: 10px;
    color: white;
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

small {
    display: block;
    text-align: center;
    margin-top: 1rem;
    opacity: 0.7;
}

.results-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    color: #4ecdc4;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.stat-header h3 {
    font-size: 1.3rem;
    color: #ff6b6b;
}

.info {
    cursor: help;
    opacity: 0.7;
    font-size: 0.9rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, #fff, #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-desc {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .input-group {
        flex-direction: column;
    }

    input {
        min-width: 100%;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 1rem;
    }
}

/* Loading state */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Error state */
.error {
    color: #ff6b6b;
    border-color: #ff6b6b;
}