:root {
    --bg: #0b1220;
    /* main background */
    --panel: #111827;
    /* panels/cards */
    --panel-2: #0f172a;
    /* inner areas */
    --muted: #9aa4b2;
    /* secondary texts */
    --text: #e5e7eb;
    /* texts */
    --accent: #60a5fa;
    /* main accent */
    --accent-2: #34d399;
    /* success */
    --danger: #f87171;
    /* error */
    --border: #1f2937;
    /* border */
    --shadow: rgba(0, 0, 0, .35);
    --btn: #1f2937;
    /* button base */
    --btn-hover: #334155;
    /* hover */
    --gutter: #0b1426;
    --hl: #1e3a8a33;
    /* search highlight */
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    overflow-x: hidden;
    /* prevents global lateral overflow */
    overflow-y: auto;
    /* allows scrolling if needed */
}

/* General layout */
.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
}

.app-header {
    flex: 0 0 auto;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, #0e1a33 0%, #0b1220 50%, #0e1a33 100%);
    box-shadow: 0 6px 20px var(--shadow);
}

.title {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 1rem;
}

.title h1 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
}

.title small {
    color: var(--muted);
    display: block;
    margin-top: 2px;
}

.toolbar {
    flex: 0 0 auto;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    padding: 0.5rem;
    border: 1px solid var(--border);
    background: var(--panel);
    border-radius: 1rem;
}

.toolbar .field {
    display: flex;
    align-items: center;
    gap: 5px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 5px 10px;
}

.toolbar input[type="text"],
.toolbar input[type="number"],
.toolbar select {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text);
    max-width: 60vw;
}

.toolbar input[type="number"] {
    width: 6rem;
}

#replaceQuery, #searchQuery {
    width: 7rem;
}

.panel-actions .field {
    display: flex;
    align-items: center;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.3rem;
    color: #fff;
}

.btn {
    background: var(--btn);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 0.5rem;
    border-radius: 10px;
    cursor: pointer;
    transition: .18s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    background: var(--btn-hover);
    transform: translateY(-1px);
    box-shadow: 0 8px 20px var(--shadow);
}

.btn.primary {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    border-color: #3b82f6;
    color: #0b1220;
    font-weight: 700;
}

.btn.success {
    background: linear-gradient(135deg, #10b981, #34d399);
    border-color: #10b981;
    color: #06261d;
    font-weight: 700;
}

.app-main {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

#url-fetch {
    width: 25vw;
}

#url {
    width: 100%;
}

#btnCopy{
    display: none;
}
#btnDownload{
    padding: 0.3rem;
}
#exportExt{
    padding: 0;
}
/* IMPORTANT: minmax(0,1fr) prevents layout from "pushing" when wrap is on */
.grid {
    flex: 1 1 auto;
    min-height: 0;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1rem;
    padding: 1rem 0.3rem
}

@media (max-width: 1000px) {
    .grid {
    grid-template-columns: minmax(0, 1fr);
    }
}

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 5px;
    display: flex;
    flex-direction: column;
    min-height: 0;
    min-width: 0;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 5px;
}

.panel-title {
    font-weight: 700;
    color: #cbd5e1;
    display: flex;
    align-items: center;
    gap: 5px;
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-wrap: wrap;
}

.editor-wrap {
    flex: 1 1 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

input, select, label {
    margin-bottom: 0;
    width: auto;
    padding: 0;
}

/* INPUT editor with gutter */
.input-view {
    flex: 1 1 0;
    min-height: 0;
    display: flex;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--panel-2);
    min-width: 0;
}

.gutter-input {
    background: var(--gutter);
    color: #93a4bb;
    text-align: right;
    padding: 8px 6px;
    overflow: hidden;
    user-select: none;
    border-right: 1px solid var(--border);
}

.gutter-input span {
    display: block;
    line-height: 1.6;
}

.gutter-input span.cont {
    color: #6b7a90;
    opacity: .7;
}

textarea#input {
    flex: 1 1 0;
    min-height: 0;
    resize: none;
    width: 100%;
    background: transparent;
    color: var(--text);
    border: none;
    padding: 8px 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    font-size: 16px;
    line-height: 1.6;
    overflow: auto;
    min-width: 0;
    /* prevents lateral overflow when wrap is off */
}

/* OUTPUT viewer with gutter and folding */
.viewer {
    flex: 1 1 0;
    min-height: 0;
    display: flex;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--panel-2);
    min-width: 0;
}

.gutter {
    background: var(--gutter);
    color: #93a4bb;
    text-align: right;
    padding: 8px 10px;
    overflow: hidden;
    user-select: none;
    border-right: 1px solid var(--border);
}

.gutter span {
    display: block;
    line-height: 1.6;
}

.code {
    flex: 1 1 auto;
    overflow: auto;
    padding: 6px 8px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    line-height: 1.6;
    color: #dde7f7;
    min-width: 0;
}

.code-line {
    display: flex;
    padding: 0 6px;
}

.code.wrap-on .code-line {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.code.wrap-off .code-line {
    white-space: pre;
    overflow-wrap: normal;
}

.children {
    margin-left: 16px;
}

.fold-toggle {
    cursor: pointer;
    color: #93c5fd;
    margin-right: 6px;
    user-select: none;
}

.line-highlight {
    background: var(--hl);
    border-radius: 6px;
}

/* Syntax tokens */
.tok-pi {
    color: #a5b4fc;
}

.tok-comment {
    color: #94a3b8;
    font-style: italic;
}

.tok-cdata {
    color: #facc15;
}

.tok-tag {
    color: #93c5fd;
}

.tok-ns {
    color: #60a5fa;
}

.tok-name {
    color: #bfdbfe;
}

.tok-attr {
    color: #f9a8d4;
}

.tok-eq {
    color: #e5e7eb;
}

.tok-val {
    color: #86efac;
}

.tok-text {
    color: #e5e7eb;
}

.stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    color: #9ca3af;
    font-size: 12px;
    padding: 0 2px;
}

.footer {
    flex: 0 0 auto;
    border-top: 1px solid var(--border);
    padding: 8px 18px;
    color: #9ca3af;
    font-size: 12px;
}

.file-label {
    position: relative;
    overflow: hidden;
}

.file-label input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.toasts {
    position: fixed;
    right: 16px;
    bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 9999;
}

.toast {
    background: #0b1426;
    color: #dbeafe;
    border: 1px solid #1e3a8a;
    padding: 10px 12px;
    border-radius: 10px;
    box-shadow: 0 10px 30px var(--shadow);
    opacity: 0;
    transform: translateY(8px);
    animation: show .25s forwards;
}

.toast.ok {
    border-color: #065f46;
    color: #d1fae5;
}

.toast.err {
    border-color: #7f1d1d;
    color: #fee2e2;
}

@keyframes show {
    to {
    opacity: 1;
    transform: translateY(0);
    }
}

/* Advanced options dropdown */
details.adv {
    display: contents;
}

details.adv>summary {
    list-style: none;
    cursor: pointer;
}

details.adv>summary::-webkit-details-marker {
    display: none;
}

details.adv>summary.btn::after {
    content: '▼';
    margin-left: 6px;
    font-size: 10px;
    opacity: .7;
}

details.adv[open]>summary.btn::after {
    content: '▲';
}

.adv-content {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px;
}


@media (max-width: 768px) {
    #url-fetch {
        width: auto;
    }

}