:root {
    --bg-color: #1A1008;
    --text-color: #FFF7ED;
    --primary-color: #F97316;
    --secondary-color: #FDBA74;
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --glass-blur: 10px;
    --border-radius: 12px;
    --font-family: 'Inter', sans-serif;
    --transition: all 0.3s ease;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

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

h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

h2, h3 {
    margin: 0 0 0.5rem 0;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.input-section textarea {
    width: 100%;
    height: 300px;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    color: var(--text-color);
    padding: 1.5rem;
    font-family: var(--font-family);
    font-size: 1.125rem;
    line-height: 1.6;
    resize: vertical;
    outline: none;
    transition: var(--transition);
}

.input-section textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(249, 115, 22, 0.2);
}

.input-section textarea::placeholder {
    color: rgba(255, 247, 237, 0.3);
}

.stats-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.stat-card h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--secondary-color);
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    line-height: 1.1;
    background: linear-gradient(to right, #FFF, #CCC);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.6;
    margin-top: 0.5rem;
}

.visualization-section {
    margin-top: 1rem;
}

.visualization-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.word-cloud {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    min-height: 250px;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

.word-cloud-item {
    color: var(--secondary-color);
    transition: var(--transition);
    cursor: default;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.word-cloud-item:hover {
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.05);
    transform: scale(1.1);
}

.placeholder-text {
    color: rgba(255, 247, 237, 0.3);
    font-style: italic;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

@media (max-width: 768px) {
    .app-container {
        padding: 1rem;
    }

    .stats-dashboard {
        grid-template-columns: 1fr 1fr;
    }

    h1 {
        font-size: 1.5rem;
    }

    .stat-value {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .stats-dashboard {
        grid-template-columns: 1fr;
    }

    header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .btn-primary {
        width: 100%;
    }
}