* {
    box-sizing: border-box;
}

:root {
  --default-font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Microsoft YaHei Light", sans-serif;
  --mermaid-font: var(--default-font);
  --reveal-font: var(--default-font);
  --font-monospace: 'Source Code Pro', monospace;
}

html, body {
    background-color: #0f0f0f;
    color: #e8e8e8;
    font-family: var(--default-font);
}

body {
    padding: 0;
    margin: 0;
}

.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.card {
    background-color: #1a1a1a;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.card-header {
    background-color: #151515;
    border-bottom: 1px solid #2a2a2a;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: #e8e8e8;
}

.card-body {
    padding: 2rem;
}

.intro-text {
    color: #a8a8a8;
    margin-bottom: 2rem;
    line-height: 1.6;
    font-size: 0.95rem;
    max-width: 80ch;
}

.layout-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 992px) {
    .layout-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
}

.layout-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-weight: 500;
    margin-bottom: 0;
    color: #e8e8e8;
    font-size: 0.95rem;
}

.form-text {
    font-size: 0.8rem;
    color: #888888;
    margin-top: 0.25rem;
}

.form-control,
.form-select {
    background-color: #252525;
    border: 1px solid #3a3a3a;
    color: #e8e8e8;
    padding: 0.625rem 0.875rem;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: all 0.15s;
}

.form-control::placeholder {
    color: #666666;
}

.form-control:focus,
.form-select:focus {
    background-color: #252525;
    border-color: #4a90e2;
    color: #e8e8e8;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
    outline: none;
}

textarea#markdownText,
textarea#frontMarkdownText {
    min-height: 150px;
    font-family: var(--font-monospace);
    font-size: 0.85rem;
    resize: vertical;
}

.form-control-color {
    width: 100%;
    height: 42px;
    cursor: pointer;
    background-color: #252525;
    border: 1px solid #3a3a3a;
    border-radius: 6px;
    padding: 4px;
}

.form-control-color:focus {
    border-color: #4a90e2;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.section-header {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #e8e8e8;
}

.option-group {
    background-color: #202020;
    border: 1px solid #303030;
    border-radius: 6px;
    padding: 1.25rem;
}

.form-check {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.form-check-input {
    margin-top: 0.3rem;
    background-color: #252525;
    border: 1px solid #3a3a3a;
    cursor: pointer;
    flex-shrink: 0;
    width: 1rem;
    height: 1rem;
}

.form-check-input:checked {
    background-color: #4a90e2;
    border-color: #4a90e2;
}

.form-check-label {
    cursor: pointer;
    color: #e8e8e8;
    font-size: 0.9rem;
    line-height: 1.4;
    flex: 1;
}

.form-check-label span {
    font-weight: 500;
}

.form-check-label .form-text {
    margin-top: 0.25rem;
    display: block;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem 1.5rem;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.btn-group-customize {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.btn {
    transition: all 0.15s;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
}

.btn-primary {
    background-color: #4a90e2;
    border-color: #4a90e2;
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #357abd;
    border-color: #357abd;
}

.btn-primary:disabled {
    background-color: #2a5a9e;
    border-color: #2a5a9e;
    opacity: 0.6;
}

.btn-outline-secondary {
    color: #a8a8a8;
    border: 1px solid #3a3a3a;
    background-color: transparent;
    font-size: 0.85rem;
    padding: 0.375rem 0.75rem;
}

.btn-outline-secondary:hover {
    background-color: #252525;
    border-color: #4a4a4a;
    color: #e8e8e8;
}

.btn-success {
    background-color: #48bb78;
    border-color: #48bb78;
    color: #ffffff;
}

.btn-success:hover {
    background-color: #38a169;
    border-color: #38a169;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

#status {
    text-align: center;
    font-weight: 500;
    padding: 0.875rem 1rem;
    border-radius: 6px;
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

.alert {
    border: none;
    border-radius: 6px;
}

.alert-info {
    background-color: #1a3a4a;
    color: #7dd3fc;
}

.alert-success {
    background-color: #1a3a2a;
    color: #86efac;
}

.alert-danger {
    background-color: #3a1a1a;
    color: #fca5a5;
}

#download-container {
    margin-top: 1rem;
    text-align: center;
}

#download-container a {
    display: inline-block;
}

hr {
    border-color: #2a2a2a;
    margin: 2rem 0;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.2em;
    margin-right: 0.5rem;
}

/* Accordion Overrides */
.accordion {
    --bs-accordion-color: #e8e8e8;
    --bs-accordion-bg: #1a1a1a;
    --bs-accordion-border-color: #2a2a2a;
    --bs-accordion-border-radius: 6px;
    --bs-accordion-inner-border-radius: 6px;
    --bs-accordion-btn-padding-x: 1.25rem;
    --bs-accordion-btn-padding-y: 1rem;
    --bs-accordion-btn-color: #e8e8e8;
    --bs-accordion-btn-bg: #1c1c1c;
    --bs-accordion-btn-focus-border-color: #4a90e2;
    --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
    --bs-accordion-body-padding-x: 1.25rem;
    --bs-accordion-body-padding-y: 1.25rem;
    --bs-accordion-active-color: #e8e8e8;
    --bs-accordion-active-bg: #202020;
}

.accordion-button {
    font-weight: 500;
    font-size: 1rem;
}

.accordion-button:not(.collapsed) {
    box-shadow: inset 0 -1px 0 var(--bs-accordion-border-color);
}

.accordion-button::after {
    --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23e8e8e8'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23e8e8e8'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.accordion-item {
    background-color: #202020;
    border: 1px solid #303030;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.accordion-item:first-of-type,
.accordion-item:last-of-type {
    border-radius: 6px;
}

.accordion-item:first-of-type .accordion-button {
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
}

.accordion-item:last-of-type .accordion-button.collapsed {
    border-bottom-left-radius: 6px;
    border-bottom-right-radius: 6px;
}

.accordion-body {
    background-color: #1a1a1a;
    border-top: 1px solid #2a2a2a;
    padding: 1.5rem;
}

/* Override Bootstrap defaults for dark mode */
.form-control:-webkit-autofill,
.form-control:-webkit-autofill:hover,
.form-control:-webkit-autofill:focus {
    -webkit-box-shadow: 0 0 0 1000px #252525 inset !important;
    -webkit-text-fill-color: #e8e8e8 !important;
}