/* ======================================
   FP Pallet Optimizer — Styles
   ====================================== */

/* --- Design Tokens --- */
:root,
[data-theme='light'] {
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
    --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Industrial Blue palette inspired by FP */
    --color-bg: #f0f3f7;
    --color-surface: #ffffff;
    --color-surface-2: #f7f9fc;
    --color-surface-offset: #e8ecf2;
    --color-border: #d0d7e2;
    --color-divider: #e2e7ef;
    --color-text: #1a2332;
    --color-text-muted: #5a6577;
    --color-text-faint: #9aa4b2;
    --color-primary: #31358a;
    --color-primary-hover: #252870;
    --color-primary-active: #1c1f59;
    --color-primary-highlight: #e8e9f5;
    --color-accent: #2e86de;
    --color-accent-hover: #2472c2;
    --color-success: #1a8754;
    --color-success-bg: #e6f4ed;
    --color-warning: #b86e00;
    --color-warning-bg: #fef3e2;
    --color-error: #c42b47;

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    --shadow-sm: 0 1px 3px rgba(26,35,50,0.06);
    --shadow-md: 0 4px 12px rgba(26,35,50,0.08);
    --shadow-lg: 0 8px 24px rgba(26,35,50,0.12);

    --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

    --font-body: 'Satoshi', 'Inter', sans-serif;
    --font-display: 'General Sans', 'Helvetica Neue', sans-serif;
}

[data-theme='dark'] {
    --color-bg: #0f1219;
    --color-surface: #181c25;
    --color-surface-2: #1e2230;
    --color-surface-offset: #151821;
    --color-border: #2c3344;
    --color-divider: #252c3b;
    --color-text: #cdd2dc;
    --color-text-muted: #7e889a;
    --color-text-faint: #4e5668;
    --color-primary: #7b80d4;
    --color-primary-hover: #9296e0;
    --color-primary-active: #a5a8e8;
    --color-primary-highlight: #252840;
    --color-accent: #5ba3e8;
    --color-accent-hover: #78b5f0;
    --color-success: #3dbe7a;
    --color-success-bg: #162a1f;
    --color-warning: #e8a030;
    --color-warning-bg: #2a2010;
    --color-error: #e8556a;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.35);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        --color-bg: #0f1219;
        --color-surface: #181c25;
        --color-surface-2: #1e2230;
        --color-surface-offset: #151821;
        --color-border: #2c3344;
        --color-divider: #252c3b;
        --color-text: #cdd2dc;
        --color-text-muted: #7e889a;
        --color-text-faint: #4e5668;
        --color-primary: #7b80d4;
        --color-primary-hover: #9296e0;
        --color-primary-active: #a5a8e8;
        --color-primary-highlight: #252840;
        --color-accent: #5ba3e8;
        --color-accent-hover: #78b5f0;
        --color-success: #3dbe7a;
        --color-success-bg: #162a1f;
        --color-warning: #e8a030;
        --color-warning-bg: #2a2010;
        --color-error: #e8556a;
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
        --shadow-md: 0 4px 12px rgba(0,0,0,0.35);
        --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
    }
}

/* --- Base Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}
body {
    min-height: 100dvh;
    line-height: 1.6;
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--color-text);
    background-color: var(--color-bg);
}
img, svg { display: block; max-width: 100%; height: auto; }
input, button, select { font: inherit; color: inherit; }
h1,h2,h3,h4 { line-height: 1.2; font-family: var(--font-display); }
button { cursor: pointer; background: none; border: none; }
a, button, input, select {
    transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* --- Header --- */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-6);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}
.header-logo {
    height: 36px;
    width: auto;
}
[data-theme='dark'] .header-logo {
    filter: brightness(0) invert(1) brightness(0.85);
}
.header-text h1 {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-primary);
}
.header-sub {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: -2px;
}
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
}
.theme-toggle:hover {
    background: var(--color-surface-offset);
    color: var(--color-text);
}

/* --- Main Layout --- */
.app-layout {
    display: grid;
    grid-template-columns: 360px 1fr;
    min-height: calc(100dvh - 65px);
}
@media (max-width: 900px) {
    .app-layout {
        grid-template-columns: 1fr;
    }
}

/* --- Controls Panel --- */
.controls-panel {
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    padding: var(--space-5);
    overflow-y: auto;
    max-height: calc(100dvh - 65px);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}
.ctrl-section {
    background: var(--color-surface-2);
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}
.ctrl-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-3);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* --- Toggle Bars --- */
.toggle-bar {
    display: flex;
    gap: 2px;
    background: var(--color-surface-offset);
    border-radius: var(--radius-md);
    padding: 2px;
}
.toggle-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: calc(var(--radius-md) - 2px);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-muted);
    white-space: nowrap;
}
.toggle-btn:hover {
    color: var(--color-text);
    background: var(--color-surface);
}
.toggle-btn.active {
    background: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-sm);
}
.toggle-btn svg { flex-shrink: 0; }

/* --- Input Fields --- */
.input-stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
.input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
}
.input-grid.cols-3 {
    grid-template-columns: 1fr 1fr 1fr;
}
.input-field.full-width {
    grid-column: 1 / -1;
}
.input-field label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: var(--space-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.input-with-unit {
    display: flex;
    align-items: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.input-with-unit:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(46,134,222,0.15);
}
.input-with-unit input {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    border: none;
    background: transparent;
    font-size: var(--text-sm);
    font-variant-numeric: tabular-nums;
    min-width: 0;
}
.input-with-unit input:focus { outline: none; }
.input-with-unit input::-webkit-inner-spin-button,
.input-with-unit input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.input-with-unit input[type="number"] { -moz-appearance: textfield; }
.unit-badge {
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-primary-highlight);
    white-space: nowrap;
    user-select: none;
}

select {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a6577' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}
select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(46,134,222,0.15);
}

/* --- Roll Options --- */
.option-group {
    margin-bottom: var(--space-3);
}
.option-group:last-child { margin-bottom: 0; }
.option-label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: var(--space-2);
}
.option-hint {
    font-size: var(--text-xs);
    color: var(--color-text-faint);
    margin-top: var(--space-1);
    font-style: italic;
}

/* --- Calculate Button --- */
.calculate-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary);
    color: #fff;
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-top: var(--space-2);
}
.calculate-btn:hover {
    background: var(--color-primary-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}
.calculate-btn:active {
    background: var(--color-primary-active);
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* --- 3D Viewport --- */
.viz-panel {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    overflow: hidden;
}
.viz-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-4);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    z-index: 10;
}
.view-toggles {
    display: flex;
    gap: 2px;
    background: var(--color-surface-offset);
    border-radius: var(--radius-sm);
    padding: 2px;
}
.view-btn {
    padding: var(--space-1) var(--space-3);
    border-radius: calc(var(--radius-sm) - 2px);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-muted);
}
.view-btn:hover { color: var(--color-text); background: var(--color-surface); }
.view-btn.active {
    background: var(--color-accent);
    color: #fff;
}
.pdf-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
}
.pdf-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: var(--color-primary-highlight);
}
.pdf-btn svg { flex-shrink: 0; }

/* Recommendation Cards */
.reco-cards { display: flex; flex-direction: column; gap: var(--space-2); }
.reco-card {
    padding: var(--space-3);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
    background: var(--color-surface);
}
.reco-card:hover { border-color: var(--color-primary); }
.reco-card.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.15);
    background: var(--color-primary-highlight);
}
.reco-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-1);
}
.reco-rank {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-primary);
}
.reco-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}
.reco-suggestion-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: #fef3c7;
    color: #92400e;
    padding: 1px 6px;
    border-radius: 4px;
    margin-left: 6px;
    vertical-align: middle;
}
.reco-stats {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-1);
    margin-bottom: var(--space-2);
}
.reco-stat {
    text-align: center;
    padding: var(--space-1) 0;
    border-radius: var(--radius-sm);
    background: var(--color-bg);
}
.reco-stat-accent {
    background: var(--color-primary);
    color: #fff;
}
.reco-stat-accent .reco-val { color: #fff; }
.reco-stat-accent .reco-key { color: rgba(255,255,255,0.7); }
.reco-val {
    display: block;
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}
.reco-key {
    display: block;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
}
.reco-meta {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-1);
}
.reco-desc {
    font-size: var(--text-xs);
    color: var(--color-text-faint);
    line-height: 1.4;
}

/* Stability indicators */
.reco-stability {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    font-weight: 600;
}
.stability-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    display: inline-block;
}
.stability-excellent .stability-dot, .stability-excellent { color: #16a34a; }
.stability-excellent .stability-dot { background: #16a34a; }
.stability-good .stability-dot, .stability-good { color: #2563eb; }
.stability-good .stability-dot { background: #2563eb; }
.stability-fair .stability-dot, .stability-fair { color: #d97706; }
.stability-fair .stability-dot { background: #d97706; }
.stability-caution .stability-dot, .stability-caution { color: #dc2626; }
.stability-caution .stability-dot { background: #dc2626; }

/* HUD stability coloring */
.hud-value.stability-excellent { color: #16a34a !important; }
.hud-value.stability-good { color: #2563eb !important; }
.hud-value.stability-fair { color: #d97706 !important; }
.hud-value.stability-caution { color: #dc2626 !important; }

/* Manual Override details */
.ctrl-summary {
    cursor: pointer;
    user-select: none;
    list-style: none;
}
.ctrl-summary::-webkit-details-marker { display: none; }
.ctrl-summary::after {
    content: '\25B8';
    float: right;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    transition: transform 0.15s;
}
details[open] > .ctrl-summary::after { transform: rotate(90deg); }

.no-configs {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-align: center;
    padding: var(--space-3);
}
.viz-info {
    font-size: var(--text-xs);
    color: var(--color-text-faint);
    font-variant-numeric: tabular-nums;
}
#three-container {
    flex: 1;
    position: relative;
    min-height: 400px;
}
#three-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}
.loading-msg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-faint);
    font-size: var(--text-sm);
    text-align: center;
}
.loading-msg svg {
    opacity: 0.4;
}

/* --- Results Panel --- */
.results-panel {
    padding: var(--space-6);
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}
.results-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-5);
}
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}
.result-card {
    background: var(--color-surface-2);
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    text-align: center;
}
.result-card.primary {
    background: var(--color-primary-highlight);
    border-color: var(--color-primary);
}
.result-card.accent {
    background: var(--color-primary);
    border-color: var(--color-primary);
}
.result-card.accent .result-value,
.result-card.accent .result-label {
    color: #fff;
}
.result-value {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
}
.result-card.primary .result-value {
    color: var(--color-primary);
}
.result-label {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
    font-weight: 500;
}

/* --- Optimization Panel --- */
.optimization-panel,
.comparison-panel {
    background: var(--color-surface-2);
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-4);
}
.optimization-panel {
    border-color: var(--color-warning);
    border-left: 4px solid var(--color-warning);
}
.comparison-panel {
    border-color: var(--color-accent);
    border-left: 4px solid var(--color-accent);
}
.opt-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface-offset);
    border-bottom: 1px solid var(--color-divider);
}
.opt-header h3 {
    font-size: var(--text-sm);
    font-weight: 600;
}
.optimization-panel .opt-header svg { color: var(--color-warning); }
.comparison-panel .opt-header svg { color: var(--color-accent); }
.opt-body {
    padding: var(--space-4);
    font-size: var(--text-sm);
    line-height: 1.7;
}
.opt-body strong {
    color: var(--color-text);
    font-weight: 600;
}
.opt-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-divider);
}
.opt-row:last-child { border-bottom: none; }
.opt-row-label {
    color: var(--color-text-muted);
}
.opt-row-value {
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}
.opt-row-value.better {
    color: var(--color-success);
}
.opt-highlight {
    background: var(--color-warning-bg);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    margin-top: var(--space-3);
    font-weight: 500;
}

/* --- Floating HUD --- */
.viz-hud {
    position: absolute;
    bottom: var(--space-4);
    left: var(--space-4);
    right: var(--space-4);
    z-index: 20;
    pointer-events: none;
}
.hud-stats {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    pointer-events: auto;
}
.hud-stat {
    flex: 1;
    min-width: 72px;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.hud-stat.highlight {
    background: rgba(232,233,245,0.92);
    border-color: var(--color-primary);
}
.hud-stat.accent {
    background: var(--color-primary);
    border-color: var(--color-primary);
}
.hud-stat.accent .hud-value,
.hud-stat.accent .hud-label {
    color: #fff;
}
.hud-value {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
}
.hud-stat.highlight .hud-value {
    color: var(--color-primary);
}
.hud-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 1px;
}
.hud-tips {
    margin-top: var(--space-2);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    pointer-events: auto;
}
.hud-tip {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    line-height: 1.4;
}
.hud-tip.tip-opt {
    border-left: 3px solid var(--color-warning);
}
.hud-tip.tip-cmp {
    border-left: 3px solid var(--color-accent);
}
.hud-tip strong {
    color: var(--color-text);
}

/* Dark mode HUD */
[data-theme='dark'] .hud-stat {
    background: rgba(24,28,37,0.88);
    border-color: rgba(44,51,68,0.7);
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
[data-theme='dark'] .hud-stat.highlight {
    background: rgba(37,40,64,0.92);
}
[data-theme='dark'] .hud-stat.accent {
    background: var(--color-primary);
}
[data-theme='dark'] .hud-tip {
    background: rgba(24,28,37,0.92);
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

/* ============================================
   Container / Load Optimizer Styles
   ============================================ */

/* Container info badge */
.container-info-badge {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--space-1);
}
.container-info-badge span {
    white-space: nowrap;
}

/* Custom fields inner spacing */
#container-custom-fields {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
#container-custom-fields.hidden {
    display: none !important;
}

/* Stacking Optimization */
.stacking-reco {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}
.stacking-subtitle {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
    margin-top: calc(-1 * var(--space-2));
}
.stacking-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
.stack-card {
    padding: var(--space-3);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
    background: var(--color-surface);
    position: relative;
}
.stack-card:hover { border-color: var(--color-primary); }
.stack-card.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.15);
    background: var(--color-primary-highlight);
}
.stack-card.weight-exceeded {
    border-color: #dc2626;
    opacity: 0.75;
}
.stack-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-1);
}
.stack-level-label {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-primary);
}
.stack-badge-best {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: #16a34a;
    color: #fff;
    padding: 2px 7px;
    border-radius: 20px;
}
.stack-badge-na {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: #dc2626;
    color: #fff;
    padding: 2px 7px;
    border-radius: 20px;
}
.stack-card-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}
.stack-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-1);
    margin-bottom: var(--space-2);
}
.stack-stat {
    text-align: center;
    padding: var(--space-1) 0;
    border-radius: var(--radius-sm);
    background: var(--color-bg);
}
.stack-stat-accent {
    background: var(--color-primary);
    color: #fff;
}
.stack-stat-accent .stack-val { color: #fff; }
.stack-stat-accent .stack-key { color: rgba(255,255,255,0.7); }
.stack-val {
    display: block;
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}
.stack-key {
    display: block;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
}
.stack-meta {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    line-height: 1.5;
}
.stack-meta .height-rec {
    font-weight: 600;
    color: var(--color-text);
}
.stack-meta .weight-warn {
    color: #dc2626;
    font-weight: 600;
}
[data-theme="dark"] .stack-meta .weight-warn {
    color: #f87171;
}

/* Load results panel */
.load-results {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}
.section-sub-title {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}
.load-summary {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
.load-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-sm);
}
.load-stat-label {
    color: var(--color-text-muted);
}
.load-stat-val {
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: var(--color-text);
    text-align: right;
}
.load-stat-val.accent {
    color: var(--color-primary);
    font-size: var(--text-base);
}
.load-weight-status {
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 600;
    margin-top: var(--space-2);
    min-height: 0;
}
.load-weight-status:empty {
    display: none;
}
.weight-ok {
    background: #dcfce7;
    color: #16a34a;
}
.weight-warning {
    background: #fef2f2;
    color: #dc2626;
}
[data-theme="dark"] .weight-ok {
    background: rgba(22, 163, 74, 0.15);
    color: #4ade80;
}
[data-theme="dark"] .weight-warning {
    background: rgba(220, 38, 38, 0.15);
    color: #f87171;
}

@media (max-width: 900px) {
    .controls-panel {
        max-height: none;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }
    #three-container { min-height: 350px; }
    .results-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .hud-stats {
        gap: var(--space-1);
    }
    .hud-stat {
        min-width: 55px;
        padding: var(--space-1) var(--space-2);
    }
    .hud-value {
        font-size: var(--text-base);
    }
}

/* ============================================
   HEADER AUTH AREA
   ============================================ */
.header-auth {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-left: var(--space-3);
}

/* Sign In button */
.sign-in-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
    letter-spacing: -0.01em;
    white-space: nowrap;
}
.sign-in-btn:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 4px 12px rgba(49, 53, 138, 0.3);
}
.sign-in-btn:active {
    background: var(--color-primary-active);
    transform: scale(0.97);
}

/* User menu */
.user-menu {
    position: relative;
}

.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.625rem 0.375rem 0.375rem;
    background: var(--color-surface-offset);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    max-width: 200px;
}
.user-menu-trigger:hover {
    background: var(--color-primary-highlight);
    border-color: var(--color-primary);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.user-avatar-fallback {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.user-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.user-menu-chevron {
    flex-shrink: 0;
    color: var(--color-text-muted);
    transition: transform var(--transition);
}

.user-menu.is-open .user-menu-chevron {
    transform: rotate(180deg);
}

/* User dropdown */
.user-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 180px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    z-index: 1000;
    animation: dropdown-in 180ms cubic-bezier(0.16, 1, 0.3, 1) both;
    display: none;
}

.user-menu.is-open .user-dropdown {
    display: block;
}

@keyframes dropdown-in {
    from { opacity: 0; transform: translateY(-6px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    width: 100%;
    padding: 0.625rem 1rem;
    background: none;
    border: none;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    text-align: left;
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
}

.user-dropdown-item:hover {
    background: var(--color-surface-2);
}

.user-dropdown-item--danger {
    color: var(--color-error);
}
.user-dropdown-item--danger:hover {
    background: rgba(196, 43, 71, 0.06);
}

.user-dropdown-divider {
    height: 1px;
    background: var(--color-divider);
    margin: 0.25rem 0;
}

/* Save Config button (in toolbar) */
.save-config-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4375rem 0.875rem;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}
.save-config-btn:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 4px 12px rgba(49,53,138,0.28);
}

/* ============================================
   AUTH MODAL — from auth-ui.html
   ============================================ */
.fp-auth-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 18, 26, 0.62);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 180ms cubic-bezier(0.16, 1, 0.3, 1), visibility 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

.fp-auth-backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

.fp-auth-modal {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 40px rgba(26, 35, 50, 0.18), 0 2px 8px rgba(26, 35, 50, 0.08);
    width: 100%;
    max-width: 420px;
    overflow: hidden;
    transform: translateY(12px) scale(0.98);
    transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.fp-auth-backdrop.is-open .fp-auth-modal {
    transform: translateY(0) scale(1);
}

.fp-auth-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-faint);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
}
.fp-auth-close:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.fp-auth-header {
    padding: 2rem 2rem 0;
    text-align: center;
}

.fp-auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.fp-auth-logo-mark {
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.fp-auth-logo-text {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.01em;
    line-height: 1.2;
    text-align: left;
}

.fp-auth-logo-text span {
    display: block;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    letter-spacing: 0.02em;
}

.fp-auth-headline {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.015em;
    line-height: 1.3;
}

.fp-auth-sub {
    margin-top: 0.375rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.fp-auth-tabs {
    display: flex;
    border-bottom: 1.5px solid var(--color-border);
    margin-top: 1.5rem;
    padding: 0 2rem;
    gap: 0;
}

.fp-auth-tab {
    flex: 1;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.625rem 0;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -1.5px;
    transition: color var(--transition), border-color var(--transition);
    text-align: center;
}

.fp-auth-tab.is-active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.fp-auth-body {
    padding: 1.5rem 2rem;
}

.fp-auth-panel {
    display: none;
}
.fp-auth-panel.is-active {
    display: block;
}

.fp-auth-oauth {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    margin-bottom: 1.25rem;
}

.fp-oauth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    padding: 0.625rem 1rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
    border: 1.5px solid transparent;
    text-decoration: none;
    width: 100%;
    text-align: center;
}

.fp-oauth-btn:active { transform: scale(0.985); }

.fp-oauth-btn--google {
    background: #ffffff;
    color: #1a2332;
    border-color: var(--color-border);
    box-shadow: 0 1px 3px rgba(26,35,50,0.06);
}
.fp-oauth-btn--google:hover {
    background: var(--color-bg);
    box-shadow: 0 2px 6px rgba(26,35,50,0.10);
}

.fp-oauth-btn--microsoft {
    background: #2f2f2f;
    color: #ffffff;
    border-color: #2f2f2f;
}
.fp-oauth-btn--microsoft:hover {
    background: #1d1d1d;
}

.fp-auth-divider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.fp-auth-divider::before,
.fp-auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.fp-auth-divider-label {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--color-text-faint);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.fp-auth-form {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
}

.fp-auth-field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.fp-auth-label {
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text);
}

.fp-auth-input {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-text);
    background: var(--color-surface);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
    resize: vertical;
}

.fp-auth-input::placeholder { color: var(--color-text-faint); }

.fp-auth-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(49, 53, 138, 0.12);
}

.fp-auth-input.is-error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(196, 43, 71, 0.10);
}

.fp-auth-pw-wrap {
    position: relative;
}

.fp-auth-pw-wrap .fp-auth-input {
    padding-right: 2.75rem;
}

.fp-auth-pw-toggle {
    position: absolute;
    right: 0.625rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-faint);
    display: flex;
    padding: 0.25rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition);
}
.fp-auth-pw-toggle:hover { color: var(--color-text-muted); }

.fp-auth-submit {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--color-primary);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 700;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    margin-top: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    letter-spacing: -0.01em;
}

.fp-auth-submit:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 4px 12px rgba(49, 53, 138, 0.28);
}

.fp-auth-submit:active {
    background: var(--color-primary-active);
    transform: scale(0.985);
}

.fp-auth-submit:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.fp-auth-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: fp-spin 0.6s linear infinite;
    display: none;
}
.fp-auth-spinner.is-visible { display: block; }
@keyframes fp-spin { to { transform: rotate(360deg); } }

.fp-auth-status {
    display: none;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.fp-auth-status.is-error {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    background: rgba(196, 43, 71, 0.08);
    color: var(--color-error);
    border: 1px solid rgba(196,43,71,0.15);
}

.fp-auth-status.is-success {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid rgba(26,135,84,0.15);
}

.fp-auth-footer {
    padding: 0.875rem 2rem 1.5rem;
    text-align: center;
}

.fp-auth-footer-text {
    font-family: var(--font-body);
    font-size: 0.8125rem;
    color: var(--color-text-faint);
    line-height: 1.5;
}

.fp-auth-footer-text a {
    color: var(--color-text-muted);
    text-decoration: underline;
    text-decoration-color: var(--color-border);
    transition: color var(--transition);
}
.fp-auth-footer-text a:hover { color: var(--color-text); }

/* ============================================
   SAVE CONFIG MODAL
   ============================================ */
.fp-save-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 18, 26, 0.62);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 180ms cubic-bezier(0.16,1,0.3,1), visibility 180ms cubic-bezier(0.16,1,0.3,1);
}
.fp-save-modal-backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

.fp-save-modal {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 40px rgba(26,35,50,0.18), 0 2px 8px rgba(26,35,50,0.08);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
    transform: translateY(12px) scale(0.98);
    transition: transform 180ms cubic-bezier(0.16,1,0.3,1);
    position: relative;
}
.fp-save-modal-backdrop.is-open .fp-save-modal {
    transform: translateY(0) scale(1);
}

.fp-save-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-divider);
}
.fp-save-modal-header h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.01em;
}
.fp-save-modal-body {
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
}
.fp-save-notes {
    min-height: 72px;
}
.fp-save-modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.625rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-divider);
}
.fp-save-cancel {
    padding: 0.5rem 1rem;
    background: none;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
}
.fp-save-cancel:hover {
    border-color: var(--color-text-muted);
    background: var(--color-bg);
}
.fp-save-confirm {
    width: auto;
    padding: 0.5rem 1.125rem;
    margin-top: 0;
}

/* ============================================
   SAVED CONFIGS DRAWER — from saved-configs-panel.html
   ============================================ */
.fp-configs-drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 18, 26, 0.4);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 8998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 220ms cubic-bezier(0.16,1,0.3,1), visibility 220ms cubic-bezier(0.16,1,0.3,1);
}
.fp-configs-drawer-backdrop.is-open {
    opacity: 1;
    visibility: visible;
}

.fp-configs-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 340px;
    max-width: 100vw;
    z-index: 8999;
    transform: translateX(100%);
    transition: transform 260ms cubic-bezier(0.16,1,0.3,1);
    display: flex;
    flex-direction: column;
}
.fp-configs-drawer.is-open {
    transform: translateX(0);
}

.fp-configs-drawer-inner {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Panel shell */
.configs-panel {
    background: var(--color-surface);
    border-left: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    width: 100%;
}

.configs-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--color-divider);
    background: var(--color-surface-2);
    gap: 0.5rem;
}

.configs-header-title {
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    flex: 1;
}

.configs-header-actions {
    display: flex;
    gap: 0.25rem;
}

.configs-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    transition: background var(--transition), color var(--transition);
    flex-shrink: 0;
}

.configs-icon-btn:hover {
    background: var(--color-primary-highlight);
    color: var(--color-primary);
}

.configs-search-wrap {
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid var(--color-divider);
    position: relative;
}

.configs-search {
    width: 100%;
    padding: 0.4375rem 0.625rem 0.4375rem 2rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    font-family: var(--font-body);
    font-size: 0.8125rem;
    color: var(--color-text);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.configs-search::placeholder { color: var(--color-text-faint); }

.configs-search:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(49,53,138,0.10);
    background: var(--color-surface);
}

.configs-search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-faint);
    pointer-events: none;
}

.configs-filters {
    display: flex;
    padding: 0.375rem 0.75rem;
    gap: 0.25rem;
    border-bottom: 1px solid var(--color-divider);
}

.configs-filter-btn {
    padding: 0.25rem 0.625rem;
    border-radius: 100px;
    border: none;
    background: none;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.configs-filter-btn.is-active {
    background: var(--color-primary-highlight);
    color: var(--color-primary);
}

.configs-filter-btn:not(.is-active):hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.configs-list {
    flex: 1;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.configs-list::-webkit-scrollbar { width: 4px; }
.configs-list::-webkit-scrollbar-track { background: transparent; }
.configs-list::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 100px; }

.config-item {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-divider);
    cursor: pointer;
    transition: background var(--transition);
    position: relative;
    text-align: left;
    width: 100%;
    background: none;
    border-left: none;
    border-right: none;
    border-top: none;
    font-family: var(--font-body);
}

.config-item:last-child { border-bottom: none; }
.config-item:hover { background: var(--color-surface-2); }
.config-item.is-active { background: var(--color-primary-highlight); }

.config-item.is-active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.config-body {
    flex: 1;
    min-width: 0;
}

.config-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.35;
}

.config-meta {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    line-height: 1.45;
    margin-top: 0.1875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.config-date {
    font-size: 0.6875rem;
    color: var(--color-text-faint);
    margin-top: 0.125rem;
}

.config-type {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.4375rem;
    border-radius: 100px;
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-right: 0.25rem;
}

.config-type--roll {
    background: #e0f2fe;
    color: #0369a1;
}

.config-type--box {
    background: #f0fdf4;
    color: #15803d;
}

.config-actions {
    display: flex;
    gap: 0.25rem;
    flex-shrink: 0;
    margin-top: -0.125rem;
}

.config-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: var(--radius-sm);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-faint);
    transition: background var(--transition), color var(--transition);
}

.config-action-btn:hover {
    background: var(--color-bg);
    color: var(--color-text-muted);
}

.config-action-btn--danger:hover {
    background: rgba(196,43,71,0.08);
    color: var(--color-error);
}

.configs-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2.5rem 1.5rem;
    text-align: center;
    gap: 0.75rem;
    color: var(--color-text-faint);
}

.configs-empty-icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.25rem;
}

.configs-empty-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.configs-empty-body {
    font-size: 0.8125rem;
    line-height: 1.5;
    max-width: 200px;
}

/* Skeleton loading */
.configs-skeleton {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-divider);
    display: flex;
    gap: 0.625rem;
    align-items: flex-start;
}

@keyframes shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position: 200%  0; }
}

.skel {
    background: linear-gradient(90deg, var(--color-divider) 25%, var(--color-bg) 50%, var(--color-divider) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.2s infinite;
    border-radius: var(--radius-sm);
}

.skel-circle { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; margin-top: 2px; }
.skel-block  { flex: 1; }
.skel-title  { height: 12px; width: 70%; margin-bottom: 6px; }
.skel-meta   { height: 10px; width: 90%; margin-bottom: 4px; }
.skel-date   { height: 8px;  width: 40%; }

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.fp-toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-end;
    pointer-events: none;
}

.fp-toast {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.75rem 1.125rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    pointer-events: auto;
    animation: toast-in 220ms cubic-bezier(0.16,1,0.3,1) both;
    max-width: 320px;
}

.fp-toast.is-success { border-left: 3px solid var(--color-success); }
.fp-toast.is-error   { border-left: 3px solid var(--color-error); }

@keyframes toast-in {
    from { opacity: 0; transform: translateY(12px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}