/* ============================================================
   ImageTools — Dark theme stylesheet
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg:          #1a1b1e;
    --surface:     #25262b;
    --surface2:    #2c2d33;
    --border:      #373840;
    --text:        #c9cad4;
    --text-dim:    #787a8a;
    --accent:      #4a90d9;
    --accent-h:    #5aa0e9;
    --danger:      #d94a4a;
    --success:     #4ad97a;
    --warn:        #d9a94a;
    --handle-tl:   #ff6b6b;
    --handle-tr:   #51cf66;
    --handle-br:   #339af0;
    --handle-bl:   #fcc419;
    --radius:      6px;
    --shadow:      0 2px 12px rgba(0,0,0,.4);
}

body {
    font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
}

/* Editor page: full-viewport locked layout */
body.page-editor {
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* ---- Utility ---- */
.hidden { display: none !important; }
.flex   { display: flex; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.flex-1 { flex: 1; }
.ml-auto{ margin-left: auto; }

button {
    cursor: pointer;
    border: none;
    border-radius: var(--radius);
    font-size: 13px;
    font-family: inherit;
    padding: 7px 14px;
    transition: background .15s, opacity .15s;
}
button:disabled { opacity: .4; cursor: default; }

.btn-primary   { background: var(--accent);  color: #fff; }
.btn-primary:hover:not(:disabled)  { background: var(--accent-h); }
.btn-danger    { background: var(--danger);  color: #fff; }
.btn-danger:hover:not(:disabled)   { background: #e95a5a; }
.btn-ghost     { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover:not(:disabled)    { background: var(--surface2); }
.btn-success   { background: var(--success); color: #111; }
.btn-success:hover:not(:disabled)  { background: #5ae98a; }

input[type=text], input[type=password], input[type=number], select {
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: var(--radius);
    padding: 7px 10px;
    font-size: 14px;
    font-family: inherit;
    width: 100%;
}
input:focus, select:focus {
    outline: 2px solid var(--accent);
    outline-offset: -1px;
}

label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 4px; }

/* ---- Layout ---- */
/* Legacy SPA wrapper — kept for app.js compatibility */
#app { height: 100vh; display: flex; flex-direction: column; }

/* Editor-page body-level flex wrapper */
.editor-layout {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* ---- Login ---- */
#view-login {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}
.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 40px 36px;
    width: 360px;
    box-shadow: var(--shadow);
}
.login-card h1 {
    font-size: 22px;
    color: #fff;
    margin-bottom: 6px;
}
.login-card p {
    color: var(--text-dim);
    margin-bottom: 28px;
    font-size: 13px;
}
.login-card .field { margin-bottom: 16px; }
.login-card button { width: 100%; padding: 9px; font-size: 15px; margin-top: 8px; }
.login-error { color: var(--danger); font-size: 13px; margin-top: 10px; min-height: 20px; }

/* ---- Top bar ---- */
#topbar {
    height: 48px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
    flex-shrink: 0;
}
#topbar .logo { font-weight: 700; font-size: 16px; color: #fff; letter-spacing: -.3px; }
#topbar .breadcrumb { color: var(--text-dim); font-size: 13px; }
#topbar .breadcrumb span { color: var(--text); }
#topbar .breadcrumb .sep { margin: 0 6px; }

/* ---- Projects view ---- */
#view-projects { flex: 1; overflow-y: auto; padding: 24px; }

.projects-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}
.projects-header h2 { font-size: 20px; color: #fff; flex: 1; }

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    cursor: pointer;
    transition: border-color .15s, box-shadow .15s;
}
.project-card:hover { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.project-card h3 { color: #fff; font-size: 16px; margin-bottom: 6px; }
.project-card .meta { color: var(--text-dim); font-size: 12px; }
.project-card .actions {
    margin-top: 14px;
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

/* ---- Project (images) view — SPA variant ---- */
#view-project { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

/* ---- Project page (multi-page variant) — scrollable column ---- */
body:not(.page-editor) .project-toolbar ~ .images-grid {
    /* already a CSS grid — no extra rules needed */
}

.project-toolbar {
    height: 48px;
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 10px;
    flex-shrink: 0;
}

/* Vertical-scrolling CSS grid for project image library */
.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
    padding: 20px;
    overflow-y: auto;
    align-content: start;
}

/* Portrait card — aspect-ratio keeps cards consistently sized */
.image-card {
    position: relative;
    aspect-ratio: 3/4;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid var(--border);
    background: #111;
    transition: border-color .15s, box-shadow .15s;
}
.image-card:hover { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.image-card.is-ready { border-color: var(--success); }

/* Thumbnail fills the full card */
.image-card .thumb {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.image-card .thumb-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 6px;
    color: var(--text-dim);
    font-size: 28px;
    background: var(--surface2);
}

/* Page number — top-left badge */
.image-card .page-num {
    position: absolute;
    top: 5px; left: 5px;
    background: rgba(0,0,0,.65);
    color: #fff;
    font-size: 10px;
    font-weight: 600;
    padding: 1px 5px;
    border-radius: 3px;
    z-index: 2;
    line-height: 1.5;
    pointer-events: none;
}

/* Ready toggle button — top right, always visible, toggles state */
.image-card .card-ready {
    position: absolute;
    top: 5px; right: 5px;
    width: 22px; height: 22px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,.35);
    background: rgba(0,0,0,.55);
    color: rgba(255,255,255,.55);
    font-size: 11px;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    padding: 0;
    z-index: 3;
    transition: background .15s, border-color .15s, color .15s;
    line-height: 1;
}
.image-card .card-ready:hover { border-color: var(--success); color: var(--success); }
.image-card .card-ready.is-ready {
    background: var(--success);
    border-color: var(--success);
    color: #111;
}

/* Bottom gradient + name overlay */
.image-card .card-overlay {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 28px 6px 5px;
    background: linear-gradient(transparent, rgba(0,0,0,.82));
    display: flex;
    align-items: flex-end;
    gap: 3px;
    z-index: 2;
}
.image-card .card-name-input {
    flex: 1;
    font-size: 10px;
    color: #fff;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 3px;
    padding: 1px 3px;
    min-width: 0;
    cursor: text;
    font-family: inherit;
    width: 100%;
    text-shadow: 0 1px 3px rgba(0,0,0,.9);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.image-card .card-name-input:hover { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.25); }
.image-card .card-name-input:focus { background: rgba(0,0,0,.6); border-color: var(--accent); outline: none; text-overflow: clip; }
.image-card .card-name {
    flex: 1;
    font-size: 10px;
    color: #fff;
    text-shadow: 0 1px 3px rgba(0,0,0,.9);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Delete — revealed on hover, inside overlay */
.image-card .card-del,
.image-card .card-layout {
    background: transparent;
    color: rgba(255,255,255,.55);
    border: none;
    padding: 1px 4px;
    font-size: 12px;
    border-radius: 3px;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity .15s, color .15s;
}
.image-card:hover .card-del,
.image-card:hover .card-layout { opacity: 1; }
.image-card .card-del:hover { color: var(--danger); background: rgba(217,74,74,.2); }
.image-card .card-layout:hover { color: var(--accent); background: rgba(100,160,255,.2); }

/* Local/pending cards */
.image-card.local-pending { border-color: var(--warn); }
.image-card.local-pending:hover { border-color: #f0c040; }

/* Drag-over indicator */
.image-card.drag-over { border-color: var(--warn); box-shadow: 0 0 0 2px var(--warn); }

/* Text page cards */
.image-card.text-page-card { border-color: #5a7fa0; }
.image-card.text-page-card:hover { border-color: var(--accent); }

.page-type-badge {
    position: absolute; top: 6px; right: 6px; z-index: 2;
    background: #3a6fa0; color: #fff; font-size: 10px; font-weight: 700;
    width: 18px; height: 18px; border-radius: 3px;
    display: flex; align-items: center; justify-content: center;
    pointer-events: none;
}

/* Export dropdown */
.export-menu {
    position: absolute; right: 0; top: calc(100% + 4px);
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 6px; min-width: 200px; z-index: 200;
    box-shadow: 0 4px 16px rgba(0,0,0,.4);
}
.export-menu a {
    display: block; padding: 9px 16px;
    color: var(--text); text-decoration: none; font-size: 13px;
    white-space: nowrap;
}
.export-menu a:hover { background: rgba(255,255,255,.07); }
.export-menu a:first-of-type { border-radius: 0; }
.export-menu a:last-of-type  { border-radius: 0 0 6px 6px; }
.export-section-label {
    font-size: 10px; font-weight: 700; letter-spacing: .6px; text-transform: uppercase;
    color: var(--text-dim); padding: 7px 16px 4px;
    border-top: 1px solid var(--border); margin-top: 2px;
}
.export-section-label:first-child { border-top: none; margin-top: 0; padding-top: 8px; }
.export-section-label--ready { color: var(--success); }

.thumb-text {
    display: flex; flex-direction: column; align-items: center;
    justify-content: center; gap: 4px; color: var(--text-dim); font-size: 13px;
}

/* ---- Upload drop zone ---- */
/* Shown only when there are no images; hidden once images exist */
.drop-zone {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 40px 28px;
    text-align: center;
    color: var(--text-dim);
    transition: border-color .2s, background .2s;
    cursor: pointer;
    margin: 20px 20px 0;
    flex-shrink: 0;
}
.drop-zone.dragover { border-color: var(--accent); background: rgba(74,144,217,.08); color: var(--text); }
.drop-zone .drop-icon { font-size: 36px; margin-bottom: 10px; }
.drop-zone p { font-size: 13px; }
.drop-zone p strong { color: var(--accent); }

/* ---- Editor view (SPA + multi-page) ---- */
#view-editor,
.editor-layout {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.editor-canvas-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #111;
    position: relative;
    overflow: hidden;
    padding: 16px;
}
.editor-canvas-area canvas {
    max-width: 100%;
    max-height: 100%;
    cursor: crosshair;
    display: block;
    touch-action: none;
}

/* Canvas scrollbars — positioned by JS relative to canvas bounds */
.sb-track {
    position: absolute;
    background: rgba(255,255,255,0.08);
    border-radius: 4px;
    pointer-events: auto;
}
.sb-hidden { display: none; }
.sb-thumb {
    position: absolute;
    background: rgba(255,255,255,0.35);
    border-radius: 4px;
    cursor: grab;
    transition: background 0.15s;
    min-width: 16px;
    min-height: 16px;
}
.sb-thumb:hover  { background: rgba(255,255,255,0.6); }
.sb-thumb:active { cursor: grabbing; background: rgba(255,255,255,0.75); }

.editor-sidebar {
    width: 300px;
    flex-shrink: 0;
    background: var(--surface);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.editor-toolbar {
    height: 42px;
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 8px;
    gap: 4px;
    flex-shrink: 0;
}
.editor-toolbar + .editor-toolbar {
    border-top: none;
}
.editor-toolbar--retouch {
    height: 36px;
    padding: 4px 8px;
}

.editor-controls {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.control-section {
    margin-bottom: 20px;
}
.control-section h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .6px;
    color: var(--text-dim);
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.slider-row label {
    width: 90px;
    flex-shrink: 0;
    margin: 0;
    font-size: 12px;
    color: var(--text-dim);
}
.slider-row input[type=range] {
    flex: 1;
    accent-color: var(--accent);
    cursor: pointer;
    height: 4px;
    background: var(--surface2);
    border: none;
    border-radius: 2px;
    padding: 0;
}
.slider-row .val {
    width: 42px;
    text-align: right;
    font-size: 12px;
    color: var(--text);
    font-variant-numeric: tabular-nums;
}
.slider-row select {
    flex: 1;
    width: auto;
    padding: 4px 8px;
    font-size: 12px;
}

/* Perspective instructions */
.corner-instructions {
    background: rgba(74,144,217,.1);
    border: 1px solid rgba(74,144,217,.3);
    border-radius: var(--radius);
    padding: 8px 10px;
    margin-bottom: 10px;
    font-size: 12px;
    color: var(--text);
    line-height: 1.4;
}
.corner-instructions strong { color: var(--accent); }

/* Inline colour dot used in mesh warp legend */
.dot {
    display: inline-block;
    width: 10px; height: 10px;
    border-radius: 50%;
    margin-right: 5px;
    vertical-align: middle;
}

/* Corner legend */
.corner-legend {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    font-size: 12px;
    margin-bottom: 12px;
}
.corner-legend .dot {
    display: inline-block;
    width: 10px; height: 10px;
    border-radius: 50%;
    margin-right: 5px;
    vertical-align: middle;
}

/* Crop toggle */
.toggle-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.toggle-row label { margin: 0; flex: 1; color: var(--text); }

/* Target size display */
.info-badge {
    background: var(--surface2);
    border-radius: var(--radius);
    padding: 8px 10px;
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 12px;
}
.info-badge strong { color: var(--text); }

.editor-footer {
    padding: 10px 12px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-shrink: 0;
}
.editor-footer .btn-primary { padding: 9px; font-size: 14px; }

.pending-changes {
    display: flex;
    flex-direction: column;
    gap: 2px;
    max-height: 130px;
    overflow-y: auto;
    min-height: 18px;
}
.pending-item {
    font-size: 11px;
    color: var(--text-dim);
    padding: 2px 4px;
    border-left: 2px solid var(--accent);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.pending-item::before {
    content: counter(step) '. ';
    counter-increment: step;
    color: var(--text-dim);
    opacity: 0.6;
}
.pending-changes { counter-reset: step; }
.pending-none {
    font-size: 11px;
    color: var(--text-dim);
    font-style: italic;
    padding: 2px 0;
}

/* ---- Progress overlay ---- */
.processing-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.65);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
    gap: 14px;
}
.spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.processing-overlay p { color: #fff; font-size: 14px; }

/* ---- Image load progress overlay ---- */
.load-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 99;
    gap: 10px;
}
.load-overlay p { color: #fff; font-size: 13px; margin: 0; }
.load-bar-track {
    width: 240px;
    height: 6px;
    background: rgba(255,255,255,.2);
    border-radius: 3px;
    overflow: hidden;
}
.load-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--accent);
    border-radius: 3px;
    transition: width .1s linear;
}

/* ---- Modal ---- */
.modal-backdrop {
    position: fixed; inset: 0;
    background: rgba(0,0,0,.6);
    z-index: 500;
    display: flex; align-items: center; justify-content: center;
}
.modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px;
    width: 380px;
    box-shadow: var(--shadow);
}
.modal h3 { color: #fff; font-size: 17px; margin-bottom: 16px; }
.modal .field { margin-bottom: 14px; }
.modal .modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }

/* ---- Notifications ---- */
#notifications {
    position: fixed;
    bottom: 20px; right: 20px;
    display: flex; flex-direction: column; gap: 8px;
    z-index: 1000;
}
.notif {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    padding: 10px 14px;
    font-size: 13px;
    box-shadow: var(--shadow);
    animation: slideIn .2s ease;
    max-width: 320px;
}
.notif.error { border-left-color: var(--danger); }
.notif.success { border-left-color: var(--success); }
@keyframes slideIn { from { transform: translateX(20px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }

/* Enhanced slider row with number input + reset */
.slider-row {
    display: grid;
    grid-template-columns: 76px 1fr 50px 26px;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}
.slider-row label { width: auto; margin: 0; font-size: 12px; color: var(--text-dim); }

.val-input {
    width: 50px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--text);
    padding: 2px 4px;
    font-size: 11px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}
.val-input:focus { outline: 1px solid var(--accent); outline-offset: -1px; }

.reset-btn {
    width: 24px; height: 24px; padding: 0;
    background: none; border: 1px solid transparent;
    border-radius: 3px; color: var(--text-dim);
    font-size: 14px; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
}
.reset-btn:hover { border-color: var(--border); color: var(--text); }

/* Colour Balance + dialog channel tabs */
.cb-tabs { display: flex; gap: 4px; margin-bottom: 10px; }
.cb-tab {
    flex: 1; font-size: 10px; padding: 4px 2px; text-align: center;
    background: var(--surface2); border: 1px solid var(--border);
    border-radius: 3px; color: var(--text-dim); cursor: pointer;
}
.cb-tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.cb-panel { display: none; }
.cb-panel.active { display: block; }

/* Section header line with right-aligned Edit button */
.section-h {
    display: flex; align-items: center;
    margin-bottom: 8px; padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}
.section-h span {
    font-size: 11px; text-transform: uppercase;
    letter-spacing: .6px; color: var(--text-dim);
}
.section-h .btn-ghost { margin-left: auto; font-size: 10px; padding: 3px 8px; }
.section-summary { font-size: 11px; color: var(--text-dim); margin-bottom: 4px; }

/* Curves canvas inside modal */
#curves-canvas { display: block; cursor: crosshair; }

/* Wider modals for Levels / Curves */
.modal-wide { width: 420px; }