/* Responsive CSS for Kindle e-paper browsers with theme support */
:root {
    --bg-color: #ffffff;
    --text-color: #000000;
    --border-color: #000000;
    --user-bg: #e0e0e0;
    --assistant-bg: #f0f0f0;
    --message-text: #000000;
    --button-bg: #ffffff;
    --button-text: #000000;
    --button-alt-bg: #ffffff;
    --button-alt-text: #000000;
}

[data-theme="dark"] {
    --bg-color: #000000;
    --text-color: #ffffff;
    --border-color: #ffffff;
    --user-bg: #2a2a2a;
    --assistant-bg: #1a1a1a;
    --message-text: #ffffff;
    --button-bg: #000000;
    --button-text: #ffffff;
    --button-alt-bg: #000000;
    --button-alt-text: #ffffff;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.3;
    font-size: 16px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Font size classes */
[data-font-size="1"] {
    font-size: 14px;
}

[data-font-size="2"] {
    font-size: 15px;
}

[data-font-size="3"] {
    font-size: 16px;
}

[data-font-size="4"] {
    font-size: 18px;
}

[data-font-size="5"] {
    font-size: 20px;
}

header {
    border-bottom: 1px solid var(--border-color);
    padding: 8px 12px;
    height: 40px;
    box-sizing: border-box;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

header h1 {
    margin: 0;
    font-size: 1.1em;
    line-height: 1;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.model-selector {
    margin: 0;
}

.model-selector select {
    padding: 2px 4px;
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    font-size: 0.85em;
    min-width: 120px;
}

.auth-info {
    display: flex;
    align-items: center;
    gap: 8px;
    line-height: 1;
}

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

.logout-button {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 0.9em;
    cursor: pointer;
    padding: 4px 10px;
    font-family: Arial, Helvetica, sans-serif;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 1.2em;
    cursor: pointer;
    padding: 2px 6px;
    line-height: 1;
}

main {
    padding: 8px 12px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    height: calc(100vh - 56px); /* Account for header height */
    overflow: hidden;
}

.chat-wrapper {
    flex-grow: 1;
    display: flex;
    margin-bottom: 8px;
    min-height: 0;
    position: relative;
}

.chat-container {
    flex-grow: 1;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    padding: 4px;
    display: flex;
    flex-direction: column;
    min-height: 0;
    scrollbar-width: auto;
}

/* Custom scrollbar styling for webkit browsers */
.chat-container::-webkit-scrollbar {
    width: 20px;
}

.chat-container::-webkit-scrollbar-track {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
}

.chat-container::-webkit-scrollbar-thumb {
    background: var(--user-bg);
    border: 1px solid var(--border-color);
}


.scroll-controls {
    display: flex;
    flex-direction: column;
    width: 40px;
    margin-left: 4px;
    height: 100%;
    gap: 2px;
}

.scroll-up, .scroll-down, .scroll-top, .scroll-bottom {
    flex: 1;
    width: 40px;
    background-color: var(--button-alt-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-up, .scroll-down {
    font-size: 1.2em;
}

.scroll-top, .scroll-bottom {
    font-size: 2.4em;
}



.message {
    padding: 8px;
    border-radius: 4px;
    max-width: 70%;
    cursor: pointer;
    transition: opacity 0.2s;
    color: var(--message-text);
    width: fit-content;
}


button.message {
    display: block;
    width: auto;
    text-align: inherit;
    border: none;
    font: inherit;
    background: none;
    padding: 8px;
    margin: 0;
}

.message.user {
    background-color: var(--user-bg);
    text-align: right;
}

.message.user .message-role,
.message.user .message-content {
    text-align: right;
}

.message.assistant {
    background-color: var(--assistant-bg);
    text-align: left;
}

.message.assistant .message-role,
.message.assistant .message-content {
    text-align: left;
}

.message-form {
    display: flex;
    margin-bottom: 8px;
}

.message-form.user {
    justify-content: flex-end;
}

.message-form.assistant {
    justify-content: flex-start;
}

.message-role {
    font-weight: bold;
    margin-bottom: 2px;
    font-size: 0.9em;
}

.message-content {
    white-space: normal;
    font-size: 0.9em;
}

.input-container {
    border-top: 1px solid var(--border-color);
    padding-top: 8px;
    flex-shrink: 0;
    position: relative;
}

.input-form {
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

.button-column {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.message-input-form {
    flex-grow: 1;
    display: flex;
}

.message-input-form textarea {
    width: 100%;
    height: 80px;
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 4px;
    font-size: 0.9em;
    box-sizing: border-box;
    resize: vertical;
}

.button-column {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.send-button {
    height: 52px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    cursor: pointer;
    font-size: 0.9em;
    min-width: 70px;
}

.reset-button {
    height: 26px;
    background-color: var(--button-alt-bg);
    color: var(--button-alt-text);
    border: 1px solid var(--border-color);
    padding: 4px 12px;
    cursor: pointer;
    font-size: 0.9em;
    min-width: 70px;
}

/* Modal styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.modal-content {
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 15% auto;
    padding: 20px;
    border: 1px solid var(--border-color);
    width: 80%;
    max-width: 300px;
    text-align: center;
}

.modal-buttons {
    margin-top: 15px;
}

.modal-buttons button {
    margin: 0 5px;
    padding: 8px 16px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.9em;
    cursor: pointer;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: 1px solid var(--border-color);
}

.modal-buttons .cancel-btn {
    background-color: var(--button-alt-bg);
    color: var(--button-alt-text);
}

.modal-content textarea {
    width: 100%;
    height: 100px;
    margin: 10px 0;
    padding: 8px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.9em;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    box-sizing: border-box;
    resize: vertical;
}

/* Settings button */
.settings-button {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 1.4em;
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
}

/* Settings page styles */
.settings-main {
    padding: 20px;
}

.settings-container {
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.settings-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    width: 100%;
}

.setting-label {
    font-size: 1em;
    color: var(--text-color);
    text-align: left;
    margin-right: auto;
}

.settings-select {
    padding: 6px 10px;
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    font-size: 0.9em;
    min-width: 200px;
}

.theme-buttons {
    display: flex;
    gap: 10px;
}

.theme-button {
    background-color: var(--button-alt-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.9em;
}

.theme-button.selected {
    background-color: var(--text-color);
    color: var(--bg-color);
    border: 2px solid var(--text-color);
    font-weight: bold;
}

.logout-button-large {
    background-color: var(--button-alt-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.9em;
}

.back-button {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 6px 12px;
    cursor: pointer;
    font-size: 0.9em;
}

.settings-link-button {
    background-color: var(--button-alt-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.9em;
}

/* Model selection page styles */

.models-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.model-button {
    width: 100%;
    padding: 15px 10px;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    cursor: pointer;
    font-size: 0.9em;
    font-family: Arial, Helvetica, sans-serif;
}

.model-button.selected {
    background-color: var(--text-color);
    color: var(--bg-color);
    border: 2px solid var(--text-color);
    font-weight: bold;
}

.header-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.chat-selector-button {
    background-color: var(--button-alt-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 4px 12px;
    cursor: pointer;
    font-size: 0.9em;
}

/* Chat list styling */
.new-chat-section {
    margin-bottom: 20px;
}

.new-chat-button {
    width: 100%;
    padding: 15px 10px;
    background-color: var(--button-alt-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    cursor: pointer;
    font-size: 0.9em;
    font-family: Arial, Helvetica, sans-serif;
}

.chat-button-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.chat-button-name {
    text-align: left;
}

.chat-button-date {
    font-size: 0.8em;
    opacity: 0.7;
}

/* Font size selector */
.font-size-selector {
    display: flex;
    gap: 8px;
}

.font-size-button {
    width: 40px;
    height: 40px;
    background-color: var(--button-alt-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.font-size-button.selected {
    background-color: var(--text-color);
    color: var(--bg-color);
    border: 2px solid var(--text-color);
    font-weight: bold;
}

/* System prompt styles */
.system-prompt-section {
    width: 100%;
}

.system-prompt-description {
    margin-bottom: 20px;
    color: var(--text-color);
}

.system-prompt-textarea {
    width: 100%;
    min-height: 200px;
    padding: 12px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.9em;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    box-sizing: border-box;
    resize: vertical;
}

.system-prompt-actions {
    margin-top: 15px;
    display: flex;
    justify-content: flex-end;
}

.save-button {
    background-color: var(--button-alt-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px 20px;
    cursor: pointer;
    font-size: 0.9em;
}

.login-container {
    width: 300px;
    margin: 100px auto 0;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.error {
    color: #ff0000;
    margin-bottom: 15px;
}

.login-info {
    margin-top: 20px;
    font-size: 0.8em;
    text-align: center;
}

/* Markdown content styling */
.message-content > *:first-child {
    margin-top: 0;
}

.message-content > *:last-child {
    margin-bottom: 0;
}

.message-content p:empty {
    display: none; /* Hide empty paragraphs */
}

.message-content code {
    background-color: var(--button-alt-bg);
    padding: 1px 3px;
    border-radius: 2px;
    font-family: monospace;
    font-size: 0.9em;
}

.message-content pre {
    background-color: var(--button-alt-bg);
    padding: 6px;
    border-radius: 3px;
    overflow-x: auto;
    margin: 0.3em 0;
}

.message-content pre code {
    background: none;
    padding: 0;
}


.message-content blockquote {
    border-left: 3px solid var(--border-color);
    padding-left: 0.8em;
    margin: 0.3em 0;
    opacity: 0.8;
}

.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4,
.message-content h5,
.message-content h6 {
    margin: 0.3em 0 0.2em 0;
    font-weight: bold;
}

.message-content table {
    border-collapse: collapse;
    margin: 0.3em 0;
}

.message-content th,
.message-content td {
    border: 1px solid var(--border-color);
    padding: 3px 6px;
}

.message-content th {
    background-color: var(--button-alt-bg);
    font-weight: bold;
}