/* Color Theme */
:root {
    --primary-color: #008080; /* Teal */
    --secondary-color: #005f5f;
    --error-color: #f44336;
}

/* Reset & Base Styles */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f8f8;
}

/* Sticky Header */
.sticky-header {
    position: sticky;
    top: 0;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

.sticky-header h1 {
    margin: 0;
    font-size: 20px;
}

.sticky-header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.sticky-header nav ul li {
    margin: 0 10px;
}

.sticky-header nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.sticky-header nav ul li a:hover {
    text-decoration: underline;
}

/* Page Layout */
.page {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Hidden Pages */
.hidden {
    display: none;
}

/* Upload Section */
.upload-container {
    border: 2px dashed var(--primary-color);
    padding: 20px;
    text-align: center;
    margin: 20px 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-container.drag-over {
    background: rgba(0, 128, 128, 0.1);
}

/* Progress Bar */
.progress-container {
    width: 100%;
    height: 20px;
    background-color: #f0f0f0;
    border-radius: 10px;
    overflow: hidden;
    margin: 20px 0;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

/* Results */
.results-container {
    display: flex;
    justify-content: space-around;
    margin: 20px 0;
}

.result-card {
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    text-align: center;
    background: #e0f7f7;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Buttons */
button {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 16px;
}

button:hover {
    background-color: var(--secondary-color);
}

button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

/* Charts */
.charts-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    gap: 20px;
    margin: 20px 0;
}

.chart-wrapper {
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}