/* === Variables (based on e5g.dev/minimal.css) === */
:root {
    --stone-050: #fafaf9;
    --stone-100: #f5f5f4;
    --stone-200: #e7e5e4;
    --stone-300: #d6d3d1;
    --stone-400: #a8a29e;
    --stone-500: #78716c;
    --stone-800: #292524;
    --stone-900: #1c1917;
    --stone-950: #0c0a09;
    --blue: #3b82f6;
    --green: #22c55e;
    --indigo: #6366f1;
    --red: #ef4444;
    --amber: #f59e0b;
    --amber-dim: rgba(245, 158, 11, 0.12);
    --red-dim: rgba(239, 68, 68, 0.10);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", Consolas, monospace;
    --font-size: 16px;
}

/* === Reset === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border-radius: 0 !important;
}

html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

body {
    background-color: var(--stone-950);
    color: var(--stone-200);
    font-family: var(--font-sans);
    line-height: 1.6;
}

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 5px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--stone-800);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--stone-500);
}

/* === Editor === */
#editor {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    color: var(--stone-200);
    border: none;
    outline: none;
    resize: none;
    padding: 48px 80px 60px;
    font-family: var(--font-mono);
    font-size: var(--font-size);
    line-height: 1.7;
    caret-color: var(--blue);
    tab-size: 4;
    -moz-tab-size: 4;
    overflow-y: auto;
    overflow-x: hidden;
    word-wrap: break-word;
    white-space: pre-wrap;
}

#editor::placeholder {
    color: var(--stone-500);
    opacity: 0.6;
}

#editor::selection {
    background-color: rgba(59, 130, 246, 0.3);
}

/* === Preview === */
#preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 48px 80px 60px;
    overflow-y: auto;
    overflow-x: hidden;
    font-family: var(--font-sans);
    font-size: var(--font-size);
    line-height: 1.8;
    user-select: text;
    cursor: default;
}

.hidden {
    display: none !important;
}

/* === Preview Typography === */
#preview h1 {
    font-size: 2em;
    font-weight: 700;
    color: var(--stone-100);
    margin: 0.6em 0 0.3em;
    letter-spacing: -0.02em;
}

#preview h2 {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--stone-100);
    margin: 0.5em 0 0.25em;
}

#preview h3 {
    font-size: 1.2em;
    font-weight: 600;
    color: var(--stone-200);
    margin: 0.4em 0 0.2em;
}

#preview p {
    margin: 0.3em 0;
}

#preview strong {
    color: var(--stone-100);
    font-weight: 600;
}

#preview em {
    color: var(--stone-300);
}

#preview del {
    color: var(--stone-500);
}

#preview a {
    color: var(--blue);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

#preview a:hover {
    border-bottom-color: var(--blue);
}

#preview .inline-code {
    background: var(--stone-900);
    border: 1px solid var(--stone-800);
    padding: 1px 6px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--stone-300);
}

#preview pre {
    background: var(--stone-900);
    border: 1px solid var(--stone-800);
    padding: 16px 20px;
    margin: 0.8em 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.9em;
    line-height: 1.5;
    color: var(--stone-300);
}

#preview pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: inherit;
    color: inherit;
}

#preview blockquote {
    border-left: 3px solid var(--stone-500);
    padding-left: 16px;
    color: var(--stone-400);
    margin: 0.5em 0;
    font-style: italic;
}

#preview hr {
    border: none;
    border-top: 1px solid var(--stone-800);
    margin: 1.2em 0;
}

.empty-line {
    height: 0.5em;
}

/* === Lists === */
.list-item {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 2px 0;
    margin-left: 4px;
}

.bullet {
    color: var(--stone-500);
    font-size: 0.7em;
    flex-shrink: 0;
    transform: translateY(-1px);
}

/* === Task Items === */
.task-line {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 6px 0;
    cursor: pointer;
    transition: opacity 0.15s ease;
    user-select: none;
}

.task-line:hover {
    opacity: 0.85;
}

.task-line.subtask {
    margin-left: 32px;
    padding-left: 12px;
    border-left: 2px solid var(--stone-800);
    font-size: 0.93em;
}

.task-line.subtask.priority-medium {
    margin-left: 32px;
    border-left: 2px solid var(--amber);
}

.task-line.subtask.priority-high {
    margin-left: 32px;
    border-left: 2px solid var(--red);
}

.task-line.subtask .task-checkbox {
    width: 15px;
    height: 15px;
    min-width: 15px;
}

.task-checkbox {
    width: 18px;
    height: 18px;
    min-width: 18px;
    background: var(--stone-800);
    border: 1.5px solid var(--stone-500);
    cursor: pointer;
    position: relative;
    transition: background-color 0.25s ease, border-color 0.25s ease, transform 0.15s ease;
    flex-shrink: 0;
}

.task-checkbox:hover {
    border-color: var(--blue);
    transform: scale(1.1);
}

.task-checkbox.checked {
    background: var(--blue);
    border-color: var(--blue);
}

/* === Priority Styling === */
.task-line.priority-medium {
    padding-left: 10px;
    border-left: 2px solid var(--amber);
}

.task-line.priority-medium .task-text {
    color: var(--amber);
}

.task-line.priority-medium .task-checkbox {
    border-color: var(--amber);
}

.task-line.priority-medium .task-checkbox:hover {
    border-color: var(--amber);
    background: rgba(245, 158, 11, 0.15);
}

.task-line.priority-medium .task-checkbox.checked {
    background: var(--amber);
    border-color: var(--amber);
}

.task-line.priority-medium.checked .task-text {
    color: var(--stone-500);
}

.task-line.priority-high {
    padding-left: 10px;
    border-left: 2px solid var(--red);
}

.task-line.priority-high .task-text {
    color: var(--red);
    font-weight: 600;
}

.task-line.priority-high .task-checkbox {
    border-color: var(--red);
}

.task-line.priority-high .task-checkbox:hover {
    border-color: var(--red);
    background: rgba(239, 68, 68, 0.15);
}

.task-line.priority-high .task-checkbox.checked {
    background: var(--red);
    border-color: var(--red);
}

.task-line.priority-high.checked .task-text {
    color: var(--stone-500);
    font-weight: normal;
}

.priority-badge {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    padding: 1px 6px;
    flex-shrink: 0;
    user-select: none;
}

.priority-badge.medium {
    color: var(--amber);
    background: var(--amber-dim);
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.priority-badge.high {
    color: var(--red);
    background: var(--red-dim);
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.task-checkbox.checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 1px;
    width: 4px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    animation: checkmark-in 0.2s ease forwards;
}

@keyframes checkmark-in {
    from {
        opacity: 0;
        transform: rotate(45deg) scale(0.5);
    }
    to {
        opacity: 1;
        transform: rotate(45deg) scale(1);
    }
}

.task-text {
    transition: opacity 0.35s ease, color 0.35s ease;
    line-height: 1.5;
}

.task-line.checked .task-text {
    text-decoration: line-through;
    text-decoration-color: var(--stone-500);
    text-decoration-thickness: 1.5px;
    opacity: 0.35;
    color: var(--stone-500);
}

/* Subtle green flash on check */
@keyframes task-flash {
    0% { background-color: transparent; }
    40% { background-color: rgba(34, 197, 94, 0.08); }
    100% { background-color: transparent; }
}

.task-line.just-toggled {
    animation: task-flash 0.5s ease;
}

/* === Empty State === */
.empty-state {
    color: var(--stone-500);
    font-size: 1rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    user-select: none;
    pointer-events: none;
}

/* === Controls === */
#controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    gap: 6px;
    z-index: 101;
}

.ctrl-btn {
    width: 38px;
    height: 38px;
    background: var(--stone-900);
    border: 1px solid var(--stone-800);
    color: var(--stone-500);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.ctrl-btn:hover {
    color: var(--stone-200);
    border-color: var(--stone-500);
    background: var(--stone-800);
}

.ctrl-btn svg {
    width: 16px;
    height: 16px;
}

/* === Status Bar === */
#status-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    gap: 16px;
    font-size: 0.72rem;
    color: var(--stone-500);
    z-index: 100;
    user-select: none;
    letter-spacing: 0.02em;
    padding: 16px 24px 10px;
    background: linear-gradient(to top, var(--stone-950) 40%, rgba(12, 10, 9, 0.85) 70%, transparent);
    pointer-events: none;
}

#status-bar span {
    pointer-events: auto;
}

/* === Settings Overlay === */
#settings-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

#settings-overlay.active {
    opacity: 1;
    visibility: visible;
}

#settings-panel {
    background: var(--stone-900);
    border: 1px solid var(--stone-800);
    padding: 28px 32px;
    min-width: 380px;
    max-width: 480px;
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(8px);
    transition: transform 0.2s ease;
}

#settings-overlay.active #settings-panel {
    transform: translateY(0);
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.settings-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--stone-100);
}

.close-btn {
    background: none;
    border: none;
    color: var(--stone-400);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px 8px;
    transition: color 0.2s;
    line-height: 1;
}

.close-btn:hover {
    color: var(--stone-100);
}

/* === Setting Sections === */
.setting-section {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--stone-800);
}

.setting-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.setting-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--stone-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.setting-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.setting-row span {
    font-size: 0.85rem;
    color: var(--stone-300);
    min-width: 40px;
    font-family: var(--font-mono);
}

/* Range input */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    flex: 1;
    height: 4px;
    background: var(--stone-800);
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--blue);
    cursor: pointer;
    border: none;
    transition: transform 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--blue);
    cursor: pointer;
    border: none;
}

/* === Page List === */
#page-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 10px;
}

.page-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--stone-950);
    border: 1px solid var(--stone-800);
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}

.page-item:hover {
    border-color: var(--stone-500);
}

.page-item.active {
    border-left: 3px solid var(--blue);
    background: rgba(59, 130, 246, 0.06);
}

.page-title {
    font-size: 0.9rem;
    color: var(--stone-200);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.page-meta {
    font-size: 0.7rem;
    color: var(--stone-500);
    margin-left: 12px;
    flex-shrink: 0;
}

.page-delete {
    background: none;
    border: none;
    color: var(--stone-500);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0 4px;
    margin-left: 8px;
    transition: color 0.2s;
    line-height: 1;
}

.page-delete:hover {
    color: var(--red);
}

/* === Buttons === */
.action-btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    background-color: var(--blue);
    color: var(--stone-050);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.15s;
    text-decoration: none;
    font-family: inherit;
    width: 100%;
    text-align: center;
}

.action-btn.small {
    padding: 8px 16px;
    font-size: 0.8rem;
}

.action-btn:hover {
    transform: translateY(-1px);
}

.action-btn.secondary {
    background-color: var(--stone-800);
    color: var(--stone-200);
}

.action-btn.secondary:hover {
    background-color: var(--stone-500);
}

.action-btn.danger {
    background-color: transparent;
    color: var(--stone-500);
    border: 1px solid var(--stone-800);
    margin-top: 8px;
}

.action-btn.danger:hover {
    color: var(--red);
    border-color: var(--red);
    background-color: rgba(239, 68, 68, 0.08);
}

.button-row {
    display: flex;
    gap: 8px;
}

.button-row .action-btn {
    flex: 1;
}

/* === Shortcuts / Syntax Reference === */
.shortcuts {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.shortcut {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
}

.shortcut kbd {
    background: var(--stone-950);
    border: 1px solid var(--stone-800);
    padding: 2px 8px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--stone-300);
    min-width: 80px;
    text-align: center;
}

.shortcut code {
    background: var(--stone-950);
    border: 1px solid var(--stone-800);
    padding: 2px 8px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--stone-300);
    min-width: 80px;
    text-align: center;
}

.shortcut span {
    color: var(--stone-400);
}

/* === Notification Settings === */
.notif-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.notif-row label {
    font-size: 0.85rem;
    color: var(--stone-300);
    min-width: 80px;
}

.notif-select {
    flex: 1;
    background: var(--stone-950);
    border: 1px solid var(--stone-800);
    color: var(--stone-200);
    padding: 6px 10px;
    font-family: inherit;
    font-size: 0.82rem;
    cursor: pointer;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    transition: border-color 0.2s;
}

.notif-select:hover,
.notif-select:focus {
    border-color: var(--stone-500);
}

.notif-status {
    font-size: 0.75rem;
    color: var(--stone-500);
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.notif-dot {
    width: 6px;
    height: 6px;
    display: inline-block;
    flex-shrink: 0;
}

.notif-dot.active {
    background: var(--green);
}

.notif-dot.inactive {
    background: var(--stone-500);
}

.notif-test-btn {
    background: none;
    border: 1px solid var(--stone-800);
    color: var(--stone-400);
    font-size: 0.75rem;
    padding: 3px 10px;
    cursor: pointer;
    font-family: inherit;
    transition: color 0.2s, border-color 0.2s;
}

.notif-test-btn:hover {
    color: var(--stone-200);
    border-color: var(--stone-500);
}

/* === Tab Bar (disabled) === */
/*
#tab-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 36px;
    background: var(--stone-950);
    border-top: 1px solid var(--stone-800);
    display: flex;
    align-items: stretch;
    z-index: 150;
    overflow: hidden;
}

#tabs-container {
    display: flex;
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
}

#tabs-container::-webkit-scrollbar {
    display: none;
}

.tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 16px;
    font-size: 0.75rem;
    color: var(--stone-500);
    background: transparent;
    border: none;
    border-right: 1px solid var(--stone-800);
    cursor: pointer;
    white-space: nowrap;
    font-family: var(--font-sans);
    transition: color 0.15s, background-color 0.15s;
    flex-shrink: 0;
    min-width: 0;
    max-width: 180px;
    position: relative;
}

.tab:hover {
    color: var(--stone-300);
    background: var(--stone-900);
}

.tab.active {
    color: var(--stone-100);
    background: var(--stone-900);
    border-top: 2px solid var(--blue);
}

.tab-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tab-close {
    font-size: 0.85rem;
    color: var(--stone-500);
    opacity: 0;
    transition: opacity 0.15s, color 0.15s;
    line-height: 1;
    flex-shrink: 0;
}

.tab:hover .tab-close {
    opacity: 1;
}

.tab-close:hover {
    color: var(--red);
}

.tab-rename-input {
    background: var(--stone-800);
    border: 1px solid var(--blue);
    color: var(--stone-100);
    font-size: 0.75rem;
    font-family: var(--font-sans);
    padding: 1px 4px;
    outline: none;
    width: 100px;
}

#tab-add {
    padding: 0 14px;
    background: transparent;
    border: none;
    border-left: 1px solid var(--stone-800);
    color: var(--stone-500);
    font-size: 1rem;
    cursor: pointer;
    transition: color 0.15s, background-color 0.15s;
    font-family: var(--font-sans);
    flex-shrink: 0;
}

#tab-add:hover {
    color: var(--stone-200);
    background: var(--stone-900);
}
*/

/* === Preview Images === */
#preview img {
    max-width: 50%;
    height: auto;
    display: block;
    margin: 0.5em 0;
    border: 1px solid var(--stone-800);
}

/* === Preview Link Embeds === */
.link-embed {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.link-embed .link-favicon {
    width: 1em;
    height: 1em;
    vertical-align: middle;
    flex-shrink: 0;
}

.link-embed a {
    color: var(--blue);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.link-embed a:hover {
    border-bottom-color: var(--blue);
}

/* === Code Block Highlight Overrides === */
#preview pre {
    position: relative;
}

#preview pre code.hljs {
    background: var(--stone-900) !important;
    padding: 0 !important;
    font-family: var(--font-mono);
}

#preview pre .code-lang-label {
    position: absolute;
    top: 4px;
    right: 8px;
    font-size: 0.65rem;
    color: var(--stone-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    pointer-events: none;
    user-select: none;
}

/* === Drag overlay === */
.drag-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(59, 130, 246, 0.06);
    border: 2px dashed var(--blue);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}

.drag-overlay.visible {
    opacity: 1;
}

.drag-overlay-text {
    color: var(--blue);
    font-size: 1.1rem;
    font-weight: 600;
    padding: 12px 24px;
    background: var(--stone-900);
    border: 1px solid var(--stone-800);
}

/* === Responsive === */
@media (max-width: 768px) {
    #editor, #preview {
        padding: 24px 20px 60px;
    }

    #controls {
        bottom: 20px;
        right: 14px;
    }

    #status-bar {
        bottom: 0;
        padding: 16px 16px 10px;
        font-size: 0.65rem;
    }

    #settings-panel {
        min-width: 0;
        width: calc(100% - 32px);
        margin: 16px;
        padding: 20px 24px;
    }

    .ctrl-btn {
        width: 34px;
        height: 34px;
    }

    .tab {
        padding: 0 12px;
        max-width: 140px;
    }
}