/* ============================================
   STOICHIOMETRY CALCULATOR - POLISHED STYLES
   ============================================ */

/* Layout */
.tool-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 24px;
}

.tool-header-copy {
    min-width: 0;
}

.main-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 24px;
    margin-top: 24px;
}

@media (max-width: 1200px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .main-layout {
        gap: 16px;
    }

    .panel {
        padding: 16px;
    }

    .stoich-table {
        font-size: 0.75rem;
    }

    .stoich-table th, .stoich-table td {
        padding: 8px 4px;
    }

    .equation-display {
        font-size: 1.25rem;
    }

    .main-input {
        padding: 10px 12px;
        font-size: 0.95rem;
    }

    /* Prevent table from squishing too much */
    .table-container {
        margin-top: 8px;
        border-radius: 8px;
        border: 1px solid var(--border-color);
    }
}

/* Panels & Cards */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.panel-header h2 {
    margin: 0 0 4px 0;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.panel-header p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Status Badges */
.status-badges {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.status-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s ease;
}

.status-badge.ok { border-color: rgba(34, 197, 94, 0.4); color: var(--accent-success); background: rgba(34, 197, 94, 0.05); }
.status-badge.warn { border-color: rgba(234, 179, 8, 0.4); color: var(--accent-warning); background: rgba(234, 179, 8, 0.05); }
.status-badge.err { border-color: rgba(239, 68, 68, 0.4); color: var(--accent-error); background: rgba(239, 68, 68, 0.05); }

/* Equation Readout */
.equation-readout {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    margin-bottom: 24px;
}

.equation-display {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Input Styles */
.equation-input-group {
    display: flex;
    gap: 12px;
}

.main-input {
    flex: 1;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    padding: 14px 18px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    background: var(--bg-input);
    color: var(--text-primary);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-input:focus {
    outline: none;
    border-color: var(--accent-biochemical);
    box-shadow: 0 0 0 3px rgba(139, 195, 74, 0.16);
}

/* Data Table */
.table-container {
    overflow-x: auto;
    margin-top: 12px;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px;
}

.table-container::-webkit-scrollbar {
    height: 6px;
}

.table-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.stoich-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 8px;
}

.stoich-table th {
    position: relative;
    text-align: left;
    padding: 12px 16px;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    min-width: 100px;
}

.stoich-table th:first-child {
    min-width: 180px;
}

.stoich-table tr.row-item {
    background: var(--bg-secondary);
    transition: all 0.2s ease;
}

.stoich-table tr.row-item:hover {
    transform: translateX(4px);
    background: var(--bg-card-hover);
}

.stoich-table td {
    padding: 16px;
    vertical-align: middle;
}

.stoich-table td:first-child { border-top-left-radius: 10px; border-bottom-left-radius: 10px; }
.stoich-table td:last-child { border-top-right-radius: 10px; border-bottom-right-radius: 10px; }

/* Composition Bar */
.composition-container {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
    display: flex;
    margin-top: 8px;
}

.comp-segment {
    height: 100%;
    transition: width 0.3s ease;
}

/* Sidebar Specifics */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: 24px;
}

.metric-card {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.metric-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-family: 'JetBrains Mono', monospace;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-biochemical);
    font-family: 'Space Grotesk', sans-serif;
}

/* Token Preview */
.token-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
    min-height: 24px;
}

.example-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.example-btn {
    cursor: pointer;
}

.token-chip {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    padding: 2px 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    animation: fadeIn 0.2s ease;
}

/* Tooltips */
.help-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-input);
    color: var(--text-muted);
    font-size: 9px;
    font-weight: 700;
    cursor: pointer;
    margin-left: 4px;
    border: 1px solid var(--border-color);
    padding: 0;
    vertical-align: middle;
}

.help-chip:hover,
.help-chip:focus-visible,
.help-chip[aria-expanded="true"] {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.help-tooltip {
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    font-family: sans-serif;
    font-size: 0.75rem;
    font-weight: 400;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

.help-chip:hover + .help-tooltip,
.help-chip:focus-visible + .help-tooltip,
.help-chip[aria-expanded="true"] + .help-tooltip {
    opacity: 1;
    visibility: visible;
}

/* Row States */
.limiting-row {
    border-left: 4px solid var(--accent-warning) !important;
    background: rgba(234, 179, 8, 0.05) !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-yellow {
    0% { background-color: var(--bg-secondary); }
    50% { background-color: rgba(234, 179, 8, 0.15); }
    100% { background-color: var(--bg-secondary); }
}

.animate-pulse {
    animation: pulse-yellow 1s ease-in-out infinite;
}

/* Animations */
@keyframes slideUpFade {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: slideUpFade 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Helpers */
.hidden { display: none !important; }

.error-message {
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(239, 68, 68, 0.1);
    border-left: 4px solid var(--accent-error);
    border-radius: 4px;
    color: var(--accent-error);
    font-size: 0.875rem;
    font-weight: 500;
}

.formula-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 600;
}

.formula-label.product { color: var(--accent-it); }

/* Liability disclaimer */
.liability-disclaimer {
    margin-top: 24px;
    padding: 14px 16px;
    border-radius: 12px;
    border: 1px solid var(--accent-warning);
    background-color: var(--accent-warning-dim);
    color: var(--text-primary);
}

.liability-disclaimer strong {
    display: block;
    margin-bottom: 6px;
    color: var(--accent-warning);
}

.liability-disclaimer p {
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.liability-disclaimer p + p {
    margin-top: 8px;
}

.liability-disclaimer p strong {
    display: inline;
    margin: 0;
    color: var(--text-primary);
}

/* Sidebar metric cards (extracted from inline styles) */
.metric-card + .metric-card {
    margin-top: 20px;
}

.legend-swatch {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-family: 'JetBrains Mono', monospace;
}

.copy-pill {
    cursor: pointer;
    padding: 6px 12px;
    font-size: 0.6rem;
    position: absolute;
    top: 12px;
    right: 12px;
}

.copy-icon {
    margin-right: 4px;
}

.status-pill {
    background: var(--accent-biochemical-dim);
    color: var(--accent-biochemical);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
}

.excess-cell {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    text-align: center;
}

.excess-cell--limiting { color: var(--accent-warning); }
.excess-cell--consumed { color: var(--text-muted); }
.excess-cell--excess   { color: var(--accent-success); }
.excess-cell--derived  { color: var(--accent-biochemical); }
.excess-cell--idle     { color: var(--text-muted); }

.td-mono {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
}

.metric-status {
    width: fit-content;
    margin-top: 4px;
}

.stacked-panel {
    margin-top: 24px;
}

.legend-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.under-determined-warning {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid rgba(234, 179, 8, 0.4);
    background: rgba(234, 179, 8, 0.05);
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.under-determined-warning strong {
    color: var(--accent-warning);
}