:root {
    --primary-color: #005f73; /* Dark Teal Blue */
    --secondary-color: #0a9396; /* Medium Teal Blue */
    --accent-color: #94d2bd; /* Light Teal */
    --light-bg: #f8f9fa;
    --medium-bg: #e9ecef;
    --dark-text: #212529;
    --medium-text: #495057;
    --light-text: #6c757d;
    --border-color: #dee2e6;
    --warning-bg: #fff3cd;
    --warning-border: #ffeeba;
    --warning-text: #856404;
    --success-bg: #d1e7dd;
    --success-border: #badbcc;
    --success-text: #0f5132;
    --error-bg: #f8d7da;
    --error-border: #f5c2c7;
    --error-text: #842029;
}

body {
    font-family: 'Roboto', sans-serif; /* Use Roboto for body */
    padding: 0; /* Remove body padding, handle spacing within elements */
    background: linear-gradient(175deg, var(--light-bg) 0%, #ffffff 30%, #ffffff 70%, var(--light-bg) 100%); /* Subtle gradient */
    color: var(--dark-text);
    line-height: 1.6;
}

/* Header Area Container */
.header-container {
    background-color: var(--primary-color);
    color: #fff;
    padding: 30px 20px 20px 20px;
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 5px solid var(--secondary-color);
}

h1 {
    color: #fff; 
    margin-bottom: 5px; /* Reduced margin */
    font-family: 'Montserrat', sans-serif; /* Use Montserrat */
    font-weight: 700; /* Bolder */
    font-size: 2.2em; /* Slightly larger */
    letter-spacing: 1px; /* Add spacing */
}

/* Style for the new subtitle */
.subtitle {
    font-size: 1em;
    color: rgba(255, 255, 255, 0.85); /* Lighter text on dark bg */
    margin-top: 0; /* Remove negative margin */
    margin-bottom: 0; /* Remove margin */
    font-family: 'Roboto', sans-serif;
    font-weight: 400;
}
.subtitle a {
    color: var(--accent-color); /* Use accent for links */
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}
.subtitle a:hover {
    color: #fff;
    text-decoration: underline;
}

h3 {
    color: var(--primary-color); /* Use primary color */
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.3em; /* Larger */
    border-bottom: 2px solid var(--secondary-color); /* Bolder border */
    padding-bottom: 8px;
    font-family: 'Montserrat', sans-serif; /* Use Montserrat */
    font-weight: 600;
}

#app {
    background-color: #fff;
    padding: 30px 40px;
    border-radius: 8px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1); /* Slightly stronger shadow */
    max-width: 800px; /* Wider */
    margin: 0 auto 30px auto; /* Center horizontally, add bottom margin */
    border: 1px solid var(--border-color);
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500; /* Medium weight */
    color: var(--medium-text);
    font-size: 0.95em;
    font-family: 'Roboto', sans-serif;
}

input[type="file"],
input[type="radio"],
input[type="text"] { /* Group input styles */
    margin-bottom: 10px; /* Consistent spacing */
}

input[type="file"] {
    border: 1px solid var(--border-color);
    padding: 8px 10px;
    border-radius: 4px;
    background-color: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
input[type="file"]:hover {
    border-color: var(--secondary-color);
}
input[type="file"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 95, 115, 0.2); /* Focus ring */
}

button {
    font-family: 'Montserrat', sans-serif; /* Match headings */
    font-weight: 600;
    padding: 12px 25px; /* Larger padding */
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease; 
    margin-right: 10px; /* Space between buttons */
    margin-top: 10px; /* Space above buttons */
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
button:last-of-type {
    margin-right: 0;
}

button:hover:not(:disabled) {
    background-color: var(--secondary-color);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}
button:active:not(:disabled) {
    transform: translateY(0px);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}
button:disabled {
    background-color: var(--medium-bg);
    color: var(--light-text);
    cursor: not-allowed;
}

#results {
    margin-top: 25px;
    padding: 15px 20px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--light-bg);
    min-height: 50px; /* Ensure it has some height even when empty */
    white-space: pre-wrap; /* Allow wrapping and preserve line breaks */
}

/* Specific result message styles */
#results.results-processing p,
#results.results-note p {
    color: var(--medium-text);
    font-style: italic;
}
#results.results-success p {
    color: var(--success-text);
    font-weight: 500;
}
#results.results-error p {
    color: var(--error-text);
    font-weight: 500;
}
#results.results-success { background-color: var(--success-bg); border-color: var(--success-border); }
#results.results-error { background-color: var(--error-bg); border-color: var(--error-border); }


#graph {
    min-height: 350px; /* Keep height */
    height: 350px;
    margin-top: 25px;
    display: none; /* Hide initially */
    background-color: #fff;
    border: 1px solid var(--border-color);
    padding: 20px; /* More padding */
    box-shadow: 0 4px 10px rgba(0,0,0,0.08); /* Enhanced shadow */
    border-radius: 4px;
}

/* Form Sections and Fieldsets */
.form-section {
    margin-bottom: 30px; /* More space between sections */
    padding-bottom: 20px;
    border-bottom: 1px solid var(--medium-bg);
}
.form-section:last-of-type { /* Remove border from last section */
     border-bottom: none;
     margin-bottom: 10px; /* Less margin if it's the last one before buttons */
}

fieldset {
    border: 1px solid var(--border-color);
    padding: 15px 20px; /* More padding */
    margin-bottom: 20px;
    border-radius: 4px;
    background-color: #fff; /* Ensure white background */
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.04);
}

legend {
    font-family: 'Montserrat', sans-serif; /* Use Montserrat */
    font-weight: 600;
    background-color: var(--primary-color);
    color: #fff;
    padding: 4px 12px;
    border-radius: 4px;
    margin-left: -5px; /* Adjust position slightly */
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

fieldset label {
    display: inline-block;
    margin-right: 15px;
    margin-left: 3px;
    font-weight: normal; /* Normal weight for radio labels */
    color: var(--dark-text); /* Use default text color */
    font-size: 0.95em;
}
input[type="radio"] {
    margin-right: 4px; /* Space between radio and label */
    vertical-align: middle;
}
input[type="radio"]:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-color); /* Use box-shadow for focus */
}


.note, .warning strong {
    font-size: 0.9em;
    color: var(--light-text); /* Use variable */
    margin-top: 5px;
    margin-bottom: 5px; /* Consistent spacing */
    line-height: 1.4;
}
.warning strong {
    color: var(--warning-text); /* Use warning text color */
    font-weight: 600;
}

/* Download link in results */
#results .download-link {
     display: inline-block;
     margin-top: 15px;
     padding: 8px 12px;
     background-color: var(--secondary-color);
     color: white;
     text-decoration: none;
     border-radius: 4px;
     font-weight: 500;
     transition: background-color 0.2s ease;
}
#results .download-link:hover {
    background-color: var(--primary-color);
    text-decoration: none;
}

/* Standalone download link (appended to #app) */
#app > p > .download-link {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 15px; /* Match button size */
    background-color: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: background-color 0.2s ease;
}
#app > p > .download-link:hover {
    background-color: var(--primary-color);
    text-decoration: none;
}


/* Style for the map container */
#map {
    height: 350px;
    width: 100%;
    border: 1px solid var(--border-color);
    margin-bottom: 10px;
    border-radius: 4px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08); /* Enhanced shadow */
}


/* Intro Section */
.intro-section {
    max-width: 850px; /* Wider */
    margin: 30px auto 30px auto;
    padding: 25px 30px;
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08); /* Enhanced shadow */
}
.intro-section p {
    margin-bottom: 12px;
    line-height: 1.6;
}

.warning { /* Style for general warnings */
    color: var(--warning-text);
    background-color: var(--warning-bg);
    border: 1px solid var(--warning-border);
    padding: 10px 15px;
    border-radius: 4px;
    margin-top: 10px;
    margin-bottom: 15px !important;
    font-size: 0.95em;
}


.download-link a { /* For the initial download link */
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}
.download-link a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* Data Table Styles */
#monthlyDataTableContainer,
#designStormTableContainer { /* Group table containers */
    margin-top: 25px;
    padding: 20px;
    background-color: #fff; /* White background */
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08); /* Enhanced shadow */
}


table { /* Base table styles */
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 15px;
    font-size: 0.95em; /* Slightly larger */
}

th, td {
    border: 1px solid var(--border-color); /* Use variable */
    padding: 10px 12px; /* More padding */
    text-align: left;
    vertical-align: middle; /* Align cell content vertically */
}

th {
    background-color: var(--medium-bg); /* Use variable */
    font-family: 'Montserrat', sans-serif; /* Use Montserrat */
    font-weight: 600;
    color: var(--medium-text);
    font-size: 0.98em;
}

/* Specific table cell alignments */
#adjustmentTable td:last-child, /* Monthly value */
#designStormTable td:nth-child(n+2) /* Storm values */
{
    text-align: right;
    font-variant-numeric: tabular-nums; /* Helps align numbers */
}


tbody tr:nth-child(even) {
    background-color: var(--light-bg); /* Use variable */
}

tbody tr:hover {
    background-color: var(--medium-bg); /* Use variable */
}

.small-button { /* Copy buttons */
    padding: 6px 12px; /* Adjust padding */
    font-size: 0.9em;
    cursor: pointer;
    background-color: var(--light-text); /* Use variable */
    color: white;
    border: none;
    border-radius: 3px;
    transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
    margin-top: 5px; /* Add space above */
    font-family: 'Roboto', sans-serif;
    font-weight: 500;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}
.small-button:hover:not(:disabled) {
     background-color: var(--medium-text);
     box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
     transform: translateY(-1px);
}
.small-button:active:not(:disabled) {
    transform: translateY(0px);
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
.small-button:disabled {
    background-color: var(--medium-bg);
    color: var(--light-text);
    cursor: not-allowed;
}

/* Styling for Adjustment Type Options */
.adjustment-type-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); /* Responsive columns */
    gap: 8px 15px; /* Row gap and column gap */
    padding-top: 8px;
}

.adjustment-option {
    display: flex;
    align-items: center;
    background-color: var(--light-bg); /* Add subtle bg */
    padding: 8px 10px; /* Add padding */
    border-radius: 4px;
    border: 1px solid var(--border-color);
    transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.adjustment-option:hover {
    border-color: var(--secondary-color);
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transform: translateY(-1px);
}
.adjustment-option input[type="radio"] {
    margin-right: 8px; /* More space between radio and label */
    margin-bottom: 0; /* Remove bottom margin */
}
.adjustment-option label { /* Style the label within */
    margin: 0;
    font-weight: normal;
    font-size: 0.95em;
    color: var(--dark-text);
}