/* CSS Variables for Colors */
:root {
    --accent: #8a2be2;
    --heading: #8a2be2;
    --blue: #3498db;
    --green: #28a745;
    --red: #dc3545;
    --orange: #f39c12;
    
    /* Light Mode Colors */
    --text-color: #333;
    --bg-color-1: #fff;
    --bg-color-2: #f4f7f6;
    --bg-color-3: #e3e6e5;
    --bg-color-4: #d2d5d4;
    --border-color: #ccc;

    /* Theme Icon Colors */
    --theme-icon-color: #2c3e50; /* Moon icon color in light mode */

    /* Table & History Page Specific Colors */
    --table-bg: #ffffff;
    --table-header-bg: #e9ecef;
    --table-border: #ddd;
    --table-row-even-bg: #f9f9f9;
    --table-row-hover-bg: #f1f1f1;
}

/* Dark Mode Colors */
body.dark-mode {
    --text-color: #ecf0f1;
    
    --bg-color-1: #1b2d3f;
    --bg-color-2: #2c3e50;
    --bg-color-3: #34495e;
    --bg-color-4: #4a647b;
    
    --border-color: #4a647b;

    /* Hidden Chars Visualizer for Dark Mode */
    --visualizer-bg: #1a242f;
    --visualizer-border: #4a647b;
    --revealed-char-bg: #7f3f00;
    --revealed-char-color: #ffcc80;

    /* Theme Icon Colors Dark Mode */
    --theme-icon-color: #f1c40f; /* Sun icon color in dark mode */

    /* Table & History Page Specific Colors Dark Mode */
    --table-bg: #34495e;
    --table-header-bg: #4a647b;
    --table-border: #4a647b;
    --table-row-even-bg: #2c3e50;
    --table-row-hover-bg: #40576e;
}

* {
    transition: all .3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color-2);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    box-sizing: border-box;
}

header, 
footer {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 20px 0;
    background-color: var(--bg-color-3);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header-inner, 
.footer-inner {
    position: relative;
    width: 80%;
    max-width: 1080px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; 
    gap: 15px;
}

/* New CSS for header controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-inner .title {
    position: relative;
}
.header-inner .title::before {
    content: 'BETA';
    position: absolute;
    left: -1.75em;
    padding: .1em .5em .2em;
    background: var(--bg-color-2);
    border-radius: .5em;
    font-weight: 600;
    color: var(--accent);
    transform: rotate(-45deg);
}

header h1 {
    margin: 0;
    font-size: 2em;
    color: var(--accent);
}

.container {
    width: 80%;
    max-width: 1080px;
    padding: 20px;
    text-align: center;
}

footer nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1em;
}

p {
    margin-bottom: 25px;
    line-height: 1.5;
}

a {
    color: var(--text-color);
    text-decoration: none;
}

.text-left {
    text-align: left;
}

a:hover {
    color: var(--accent);
}

textarea {
    width: 100%;
    height: 200px;
    padding: 10px;
    margin-bottom: 20px;
    resize: vertical;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    box-sizing: border-box;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08);
    background-color: var(--bg-color-3);
    color: var(--text-color);
}

.cleaning-options-group {
    background-color: var(--bg-color-4);
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: left;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 15px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: var(--text-color);
}

.checkbox-group input[type="checkbox"] {
    margin-right: 8px;
    width: 18px; /* Custom size for checkbox */
    height: 18px;
    accent-color: var(--accent); /* The accent color of the checkbox itself */
    cursor: pointer;
}


.buttons {
    position: relative;
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

button {
    background-color: var(--accent);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

button:hover {
    transform: translateY(-2px);
    filter: brightness(.9);
}
button#cleanButton:hover {
	background: var(--blue);
}
button#copyButton:hover, 
button.copy-entry-button:hover {
	background: var(--green);
}
button#clearButton:hover, 
button.delete-entry-button:hover {
	background: var(--red);
}
button#hiddenCharsToggle:hover, 
button.show-chars-button:hover {
	background: var(--orange);
}

/* Global message box styling */
.message {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 600px;
    z-index: 1000;
    padding: 10px;
    border-radius: 5px;
    min-height: 1em;
    border: 1px solid;
    font-size: 0.9em;
    text-align: center;
}

.message.hidden {
    opacity: 0;
    user-select: none;
    pointer-events: none;
    display: none !important;
}
.message.success { background-color: var(--green); }
.message.error { background-color: var(--red); }
.message.info { background-color: var(--blue); }

.theme-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    cursor: pointer;
}

.theme-icon:hover {
    transform: scale(1.1);
}

.theme-svg {
    width: 24px;
    height: 24px;
    fill: var(--theme-icon-color);
}

.hidden {
    display: none !important;
}

/* Hidden Characters Visualizer Styling */
.hidden-chars-visualizer {
    display: none;
    background-color: var(--bg-color-1);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 15px;
    margin-top: 20px;
    margin-bottom: 20px;
    text-align: left;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 250px;
    overflow-y: auto;
}

.hidden-chars-visualizer h3 {
    margin-top: 0;
    color: var(--heading-color);
}

.revealed-char {
    background-color: var(--bg-color-1);
    color: var(--accent);
    filter: brightness(1.5);
    padding: 2px 4px;
    border-radius: 3px;
    font-weight: bold;
    white-space: nowrap;
}

/* Spinner Styles */
.spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 4px solid var(--bg-color-3);
    border-top: 4px solid var(--accent);
    border-radius: 50%;
    width: 2em;
    height: 2em;
    animation: spin 1s linear infinite;
    display: none;
    z-index: 10;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Table & History Page Specific Styles */
table {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto 40px auto;
    border-collapse: collapse;
    background-color: var(--bg-color-3);
    border-radius: 8px;
    overflow: hidden;
}
table th, 
table td {
    border: 1px solid var(--border-color);
    padding: 12px;
    text-align: left;
    vertical-align: top;
}
table th {
    background-color: var(--bg-color-4);
    color: var(--text-color);
    font-weight: bold;
    position: sticky;
    top: 0;
    z-index: 1;
}
table tr:nth-child(even) {
    background-color: var(--bg-color-2);
}
table tr:hover {
    background-color: var(--bg-color-1);
}
table td.text-column {
    white-space: pre-wrap;
    word-break: break-word;
    max-width: 700px;
}
.no-data {
    text-align: center;
    padding: 20px;
}
.controls {
    text-align: center;
    margin-top: 20px;
    margin-bottom: 20px;
}
.controls button:hover, 
.clear-history-button:hover {
    background-color: var(--red);
}
table td[data-label="Timestamp"] {
    text-align: center;
}
td[data-label="Actions"] button {
	display: block;
	padding: 8px 16px;
	margin: 0 auto 12px;
	width: 100%;
}


/* Custom Confirmation Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6); /* Semi-transparent black background */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000; /* Ensure it's on top of other content */
    opacity: 1; /* Start visible, handled by JS 'hidden' class */
    transition: opacity 0.3s ease-in-out;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none; /* Make it unclickable when hidden */
    display: none; /* Hide completely after transition */
}

.modal-content {
    background-color: var(--bg-color-1);
    color: var(--text-color);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    text-align: center;
    max-width: 400px;
    width: 90%;
    transform: translateY(0); /* Start visible, handled by JS */
    transition: transform 0.3s ease-in-out;
}

.modal-overlay.hidden .modal-content {
    transform: translateY(-50px); /* Move up when hidden */
}

.modal-content h3 {
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--accent);
}

.modal-content p {
    margin-bottom: 25px;
    line-height: 1.5;
}

.modal-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.modal-buttons button {
    /* Inherit button styles, but allow overrides */
    background-color: var(--blue); /* Default for primary */
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.95rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.modal-buttons button.button-primary {
    background-color: var(--green); /* Green for Yes/Confirm */
}

.modal-buttons button.button-primary:hover {
    filter: brightness(0.9);
}

.modal-buttons button.button-secondary {
    background-color: var(--red); /* Red for No/Cancel */
}

.modal-buttons button.button-secondary:hover {
    filter: brightness(0.9);
}

/* Specific styles for buttons on history page */
.button-danger {
    background-color: var(--red);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.button-danger:hover {
    transform: translateY(-2px);
    filter: brightness(.9);
}

/* Hide the individual delete form itself, buttons will trigger it */
.delete-single-entry-form {
    display: none;
}


/* Responsive adjustments */
@media (max-width: 768px) {
    .header-inner,
    .footer-inner,
    .header-controls { 
        flex-direction: column;
        text-align: center;
        gap: 10px;
        padding: 15px;
    }
    header h1 {
        font-size: 1.6em;
    }
    .header-inner .title::before {
        left: -2.2em;
    }
    .container {
        width: 95%;
        padding: 0 10px;
    }
    p {
        padding: 0;
    }
    textarea {
        width: calc(100% - 20px);
    }
    .buttons,
    .checkbox-group {
        flex-direction: column;
        gap: 10px;
        text-align: center;
        align-items: center;
        width: max-content;
        margin: 0 auto 20px;
    }
    .buttons button,
    .checkbox-group label {
        width: 100%;
    }
    .spinner {
        position: static;
        margin: 10px auto;
        transform: none;
    }
    /* Table specific responsive adjustments */
    table, table thead, table tbody, table th, table td, table tr {
        display: block;
    }
    table thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }
    table tr {
        margin-bottom: 10px;
        border-radius: 5px;
        overflow: hidden;
        border: 1px solid var(--border-color);
    }
    table td {
        border: none;
        position: relative;
        padding-left: 50%;
        border: 1px solid var(--border-color);
    }
    table td:last-child {
        border-bottom: 0;
    }
    table td:before {
        position: absolute;
        top: 12px;
        left: 12px;
        width: 45%;
        padding-right: 10px;
        white-space: nowrap;
        text-align: left;
        font-weight: bold;
        content: attr(data-label);
    }
    table td.text-column {
        max-width: none;
    }
}