:root {
    --accent-hue: 207;
    --accent-dark: hsl(var(--accent-hue), 70%, 25%);
    --accent-mid: hsl(var(--accent-hue), 70%, 45%);
    --accent-hover: hsl(var(--accent-hue), 70%, 35%);
    --accent-bg: hsl(var(--accent-hue), 35%, 95%);
    --accent-preview: hsl(var(--accent-hue), 40%, 88%);
    --accent-link: hsl(var(--accent-hue), 70%, 35%);
    --error: #e05555;
    --disabled: hsl(var(--accent-hue), 20%, 70%);
}

body {
    font-family: 'Roboto', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--accent-bg);
    padding: 20px;
    max-width: 700px;
    margin: auto;
    font-size: 16px;
    transition: background 0.3s;
}

h1 {
    text-align: center;
    color: var(--accent-dark);
    font-size: 2em;
    transition: color 0.3s;
}

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

input, select, textarea, button {
    width: 100%;
    padding: 12px;
    margin: 6px 0 16px 0;
    border-radius: 5px;
    border: 1px solid #ccc;
    box-sizing: border-box;
    font-size: 1em;
}

select {
    background: white;
    color: black;
}

select option[value=""] {
    color: #999;
}

select option:not([value=""]) {
    color: black;
}

select:has(option[value=""]:checked) {
    color: #999;
}

textarea {
    height: 90px;
    font-family: 'Roboto', Arial, sans-serif;
    font-size: 1em;
}

.url-container {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.url-container input {
    flex: 1;
}

#autofillButton {
    width: auto;
    white-space: nowrap;
    background-color: var(--accent-mid);
    color: white;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
    padding: 12px 16px;
}

#autofillButton:hover {
    background-color: var(--accent-hover);
}

#autofillButton:disabled {
    background-color: var(--disabled);
    cursor: not-allowed;
}



.flex-container {
    display: flex;
    gap: 10px;
}

.flex-container input,
.flex-container select {
    flex: 1;
    min-width: 0;
}

#buttonContainer {
    display: flex;
    gap: 10px;
}

#buttonContainer button,
#copyButton {
    flex: 1;
    font-size: 1.1em;
    background-color: var(--accent-mid);
    color: white;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
}

#buttonContainer button:hover,
#copyButton:hover:not(:disabled) {
    background-color: var(--accent-hover);
}

#copyButton:disabled {
    background-color: var(--disabled);
    cursor: not-allowed;
}

#citationPreview {
    background-color: var(--accent-preview);
    padding: 12px;
    border-radius: 5px;
    min-height: 60px;
    font-family: 'Roboto', Arial, sans-serif;
    font-size: 1em;
    transition: background 0.3s;
    user-select: none;
}

#citationPreview i {
    font-style: italic;
    color: black;
}

#citationPreview a {
    color: var(--accent-link);
    text-decoration: underline;
    transition: color 0.3s;
}

#outputSection {
    display: none;
}

.required {
    color: var(--error);
}

.field-error {
    border-color: var(--error) !important;
}

.error-msg {
    color: var(--error);
    font-size: 0.85em;
    margin-top: -12px;
    margin-bottom: 10px;
    display: none;
}