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

:root {
    --bg-primary: #0a0c0f;
    --bg-secondary: #12161c;
    --bg-tertiary: #1a1f28;
    --border-primary: #2a3240;
    --border-accent: #f5a623;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --text-muted: #5f6368;
    --accent: #f5a623;
    --accent-hover: #ffb940;
    --success: #4caf50;
    --danger: #ff6b6b;
    --header-height: 38px;
    --gap-xs: 2px;
    --gap-sm: 4px;
    --gap-md: 6px;
    --gap-lg: 8px;
    --gap-xl: 10px;
}

body {
    font-family: 'Rajdhani', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 12px;
    background-image: 
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 20px 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--gap-sm) var(--gap-xl);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-accent);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
}

.logo-icon {
    font-size: 1.1rem;
    color: var(--accent);
}

.logo-text {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stats {
    display: flex;
    gap: var(--gap-lg);
    align-items: center;
}

.stat {
    display: flex;
    align-items: baseline;
    gap: 3px;
    padding: var(--gap-xs) var(--gap-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 2px;
}

.stat-label {
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.stat-value {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent-hover);
}

.stat-unit {
    font-size: 0.6rem;
    color: var(--text-secondary);
}

.solver-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: var(--gap-xs) var(--gap-lg);
    border: 1px solid var(--accent);
    color: var(--accent);
    font-family: inherit;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

.solver-checkbox input[type="checkbox"] {
    accent-color: var(--accent);
    width: 12px;
    height: 12px;
    cursor: pointer;
}

.solver-checkbox:has(input:checked) {
    background: var(--accent);
    color: var(--bg-primary);
}

.instance-frozen {
    border-left: 2px solid var(--accent);
    padding-left: 4px;
    background: rgba(245, 166, 35, 0.04);
}

.instance-output-locked {
    border-left: 2px solid var(--amber);
    padding-left: 4px;
}

.frozen-lock {
    font-size: 0.7rem;
    opacity: 0.6;
    cursor: default;
    padding: 0 2px;
}

.output-lock-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.75rem;
    opacity: 0.4;
    padding: 0 2px;
    transition: opacity 0.15s;
}

.output-lock-btn:hover {
    opacity: 0.9;
}

.output-lock-btn--on {
    opacity: 0.85;
}

.main {
    padding: var(--gap-lg);
    padding-bottom: 60px;
    display: flex;
    flex-direction: column;
    gap: var(--gap-xl);
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.resource-grid {
    display: flex;
    gap: var(--gap-xl);
}

.row {
    margin-bottom: var(--gap-xl);
}

.row-label {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.15em;
    margin-bottom: var(--gap-sm);
    padding-left: var(--gap-xs);
}

.row-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap-md);
}

.row-content-stacked {
    display: flex;
    flex-direction: column;
    gap: var(--gap-md);
}

.box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 2px;
    min-width: 310px;
    flex: 1 1 420px;
}

.box-stacked {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 2px;
}

.box-deficit {
    border-color: var(--danger);
    background: rgba(255, 107, 107, 0.05);
}

.box-header {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
    padding: var(--gap-sm) var(--gap-md);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-primary);
}

.box-name {
    font-weight: 600;
    font-size: 0.75rem;
    flex: 1;
}

.box-rate {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    color: var(--success);
}

.box-rate-deficit {
    color: var(--danger);
}

.box-power {
    font-size: 0.65rem;
    cursor: help;
    opacity: 0.6;
}

.box-content {
    padding: var(--gap-sm);
    display: flex;
    flex-direction: column;
    gap: var(--gap-xs);
}

.instance {
    display: flex;
    align-items: center;
    gap: var(--gap-xs);
    flex-wrap: wrap;
    min-width: 0;
}

.empty {
    color: var(--text-muted);
    font-size: 0.65rem;
    font-style: italic;
    padding: var(--gap-xs);
}

input[type="number"] {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    color: var(--text-primary);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.65rem;
    padding: var(--gap-xs) var(--gap-sm);
    width: 36px;
    text-align: center;
    border-radius: 1px;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--accent);
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
}

select {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.65rem;
    padding: var(--gap-xs);
    border-radius: 1px;
    cursor: pointer;
    min-width: 50px;
}

select:focus {
    outline: none;
    border-color: var(--accent);
}

.input-label {
    font-size: 0.6rem;
    color: var(--text-muted);
}

.instance-output {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.65rem;
    color: var(--text-secondary);
    min-width: 50px;
    text-align: right;
}

.add-btn {
    background: transparent;
    border: 1px dashed var(--border-primary);
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: var(--gap-xs) var(--gap-md);
    cursor: pointer;
    transition: all 0.2s;
    margin: var(--gap-sm);
}

.add-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.delete-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    padding: 0 var(--gap-xs);
    line-height: 1;
}

.delete-btn:hover {
    color: var(--danger);
}

.potential-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 2px;
    padding: var(--gap-sm);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
    min-width: 200px;
}

.potential-box .box-name {
    flex: 1;
}

/* Save bar */
.save-bar {
    display: flex;
    align-items: center;
    gap: 4px;
}
.save-bar input {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.65rem;
    background: #12161c;
    color: #e8eaed;
    border: 1px solid #2a3240;
    border-radius: 2px;
    padding: 2px 6px;
    outline: none;
}
.save-bar input:focus {
    border-color: #f5a623;
}
#save-name { width: 130px; }
#save-slug  { width: 52px; text-align: center; letter-spacing: 0.1em; }
.save-bar button {
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 8px;
    background: #2a3240;
    color: #f5a623;
    border: 1px solid #f5a623;
    border-radius: 2px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.save-bar button:hover { background: #f5a623; color: #0a0c0f; }

/* Resources sticky sub-header */
.resources-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #12161c;
    border-bottom: 1px solid var(--border-accent);
    padding: 4px 6px;
    z-index: 101;
}
.resources-header .row {
    background: transparent;
    border: none;
    padding: 0;
}

/* Generators sticky footer */
.generators-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #12161c;
    border-top: 1px solid #f5a623;
    padding: 4px 6px;
    z-index: 100;
}
.generators-footer .row {
    background: transparent;
    border: none;
    padding: 0;
}

/* Manifold modal */
.manifold-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.75);
    z-index: 200;
    display: flex;
    flex-direction: column;
    padding: 20px;
}
.manifold-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px;
    background: #12161c;
    border: 1px solid #f5a623;
    border-bottom: none;
    border-radius: 3px 3px 0 0;
}
.manifold-title {
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: #f5a623;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.manifold-close {
    font-size: 1rem;
    color: #5f6368;
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
    padding: 0 4px;
}
.manifold-close:hover { color: #e8eaed; }
.manifold-body {
    flex: 1;
    display: flex;
    min-height: 0;
}
.manifold-outer {
    width: 220px;
    flex-shrink: 0;
    background: #0d1117;
    border: 1px solid #f5a623;
    border-right: none;
    border-top: none;
    border-radius: 0 0 0 3px;
    padding: 8px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.outer-heading {
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    color: #f5a623;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}
.outer-row {
    display: flex;
    flex-direction: column;
    gap: 1px;
    padding: 3px 0;
    border-bottom: 1px solid #1e2530;
}
.outer-row:last-child { border-bottom: none; }
.outer-row-constraint .outer-name { color: #ffb74d; }
.outer-name {
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.65rem;
    font-weight: 600;
    color: #9aa0a6;
}
.outer-rate {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.6rem;
    color: #e8eaed;
}
.outer-constraint {
    color: #ffb74d;
    font-size: 0.55rem;
}
.manifold-canvas-wrap {
    flex: 1;
    background: #0a0c0f;
    border: 1px solid #f5a623;
    border-top: none;
    border-radius: 0 0 3px 0;
    overflow: hidden;
}
.manifold-btn {
    font-size: 0.65rem;
    color: #5f6368;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0 2px;
    line-height: 1;
}
.manifold-btn:hover { color: #f5a623; }

/* Ghosted (inactive) product boxes */
.box-ghost {
    opacity: 0.35;
    border-style: dashed;
}
.box-ghost:hover {
    opacity: 0.65;
}
/* Ensure dropdowns inside instances are not clipped by stacking contexts */
.instance {
    isolation: auto;
}

/* Custom recipe dropdown */
.recipe-dropdown {
    position: relative;
    display: inline-block;
    vertical-align: middle;
}
.recipe-dropdown-selected {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.65rem;
    background: #12161c;
    color: #e8eaed;
    border: 1px solid #2a3240;
    border-radius: 2px;
    padding: 2px 20px 2px 6px;
    cursor: pointer;
    white-space: nowrap;
    min-width: 90px;
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    user-select: none;
}
.recipe-dropdown-selected::after {
    content: '▾';
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    color: #5f6368;
    font-size: 0.7rem;
    pointer-events: none;
}
.recipe-dropdown.open .recipe-dropdown-selected {
    border-color: #f5a623;
}
.recipe-dropdown-list {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 500;
    background: #12161c;
    border: 1px solid #f5a623;
    border-radius: 2px;
    min-width: 240px;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: 0 4px 16px rgba(0,0,0,0.6);
}
.recipe-dropdown-option {
    padding: 6px 8px 4px;
    cursor: pointer;
    border-bottom: 1px solid #1e2530;
}
.recipe-dropdown-option:last-child { border-bottom: none; }
.recipe-dropdown-option:hover { background: #1a2230; }
.recipe-dropdown-option.selected { background: #1a2a1a; }
.rdo-name {
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    color: #e8eaed;
    margin-bottom: 3px;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
}
.rdo-ratio {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--accent);
    white-space: nowrap;
    flex-shrink: 0;
}
.rdo-sep {
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.55rem;
    font-weight: 600;
    color: #5f6368;
    letter-spacing: 0.1em;
    margin: 2px 0 1px;
    text-transform: uppercase;
}
.rdo-item {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.6rem;
    padding-left: 6px;
}
.rdo-in  { color: #9aa0a6; }
.rdo-out { color: #81c784; }

.nukemax-stat {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 2px;
    padding: 8px 4px;
}
.nukemax-stat-val {
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.1rem;
    color: var(--amber);
}
.nukemax-stat-label {
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.6rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ── Solver sidebar ── */
.solver-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: var(--gap-xs) var(--gap-lg);
    border: 1px solid var(--accent);
    background: transparent;
    color: var(--accent);
    font-family: inherit;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.2s;
}
.solver-toggle-btn:hover {
    background: var(--accent);
    color: var(--bg-primary);
}

.solver-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 180px;
    height: calc(100vh - var(--header-height));
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-accent);
    z-index: 200;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.25s ease;
}
.solver-sidebar.open {
    transform: translateX(0);
}
.solver-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--gap-md) var(--gap-lg);
    border-bottom: 1px solid var(--border-accent);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--accent);
}
.solver-sidebar-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.75rem;
    padding: 0 2px;
    line-height: 1;
}
.solver-sidebar-close:hover { color: var(--text-primary); }
.solver-sidebar-body {
    display: flex;
    flex-direction: column;
    gap: var(--gap-lg);
    padding: var(--gap-xl) var(--gap-lg);
}
.solver-sidebar-body .solver-checkbox {
    display: flex;
    width: 100%;
}

.ratio-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    padding: 0 4px;
    border-left: 1px solid var(--border-primary);
    white-space: nowrap;
}

.byproduct-hint {
    font-size: 0.55rem;
    color: var(--text-muted);
    font-style: italic;
    padding: 2px 4px 4px;
    letter-spacing: 0.02em;
}

/* Recipe dropdown selected display */
.recipe-dropdown-selected {
    display: flex;
    align-items: center;
    gap: 4px;
}
.rds-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}
.rds-ratio {
    font-size: 0.6rem;
    color: var(--accent);
    white-space: nowrap;
    flex-shrink: 0;
}

.instance-subfactory {
    opacity: 0.75;
    border-left: 2px solid #7986cb;
    padding-left: 4px;
    gap: 6px;
}
.subfactory-source {
    font-size: 0.6rem;
    color: #7986cb;
    white-space: nowrap;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Derived (byproduct) instance rows */
.instance-derived {
    opacity: 0.6;
    font-size: 0.6rem;
    pointer-events: none;
    gap: 4px;
}
.derived-count {
    font-family: 'Share Tech Mono', monospace;
    color: var(--text-secondary);
    min-width: 20px;
    text-align: right;
}
.derived-label {
    flex: 1;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.derived-ppm {
    font-family: 'Share Tech Mono', monospace;
    color: var(--success);
    white-space: nowrap;
}

/* ── Sinkmax loading animation ── */
.sinkmax-control {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    gap: 0;
}

.sinkmax-loader {
    display: none;
    position: absolute;
    inset: 0;
    overflow: hidden;
    align-items: center;
    justify-content: center;
    gap: 4px;
    background: var(--bg-primary);
    border: 1px solid var(--accent);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.6rem;
    color: var(--accent);
    letter-spacing: 0.12em;
    z-index: 2;
}
.sinkmax-loader.active {
    display: flex;
}

/* Amber sweep scan line */
.sinkmax-scan {
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(245,166,35,0.08) 40%,
        rgba(245,166,35,0.35) 50%,
        rgba(245,166,35,0.08) 60%,
        transparent 100%
    );
    animation: sinkmax-sweep 1.4s ease-in-out infinite;
    pointer-events: none;
}
@keyframes sinkmax-sweep {
    0%   { left: -60%; }
    100% { left: 100%; }
}

.sinkmax-label {
    position: relative;
    z-index: 1;
}

/* Staggered dot pulse */
.sinkmax-dots {
    position: relative;
    z-index: 1;
    display: inline-flex;
    gap: 1px;
}
.sinkmax-dots span {
    animation: sinkmax-dot 1.2s ease-in-out infinite;
    opacity: 0.2;
}
.sinkmax-dots span:nth-child(1) { animation-delay: 0s; }
.sinkmax-dots span:nth-child(2) { animation-delay: 0.2s; }
.sinkmax-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes sinkmax-dot {
    0%, 80%, 100% { opacity: 0.2; }
    40%            { opacity: 1;   }
}