/* ============================================
   DESIGN SYSTEM - SCOPED TO .kot-calc-root
   ============================================ */
.kot-calc-root {
    /* Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-input: #ffffff;
    --border-subtle: rgba(0, 0, 0, 0.08);
    --border-focus: #2D835C;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --accent-green: #2D835C;
    --accent-green-glow: rgba(45, 131, 92, 0.1);
    --accent-burgundy: #851B30;
    --accent-burgundy-glow: rgba(133, 27, 48, 0.1);
    --gradient-card: linear-gradient(145deg, #ffffff, #f8fafc);
    --gradient-accent: linear-gradient(135deg, #2D835C, #1e593e);
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 10px 30px rgba(45, 131, 92, 0.08);
    /* Spacing & Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
}

.kot-calc-root *, .kot-calc-root *::before, .kot-calc-root *::after {
    box-sizing: border-box;
}

/* ============================================
   LAYOUT
   ============================================ */
.kot-calc-root .calculator-wrapper {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 0 40px; /* Reduced header padding */
}

/* ============================================
   CARD STYLES
   ============================================ */
.kot-calc-root .card {
    background: var(--gradient-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-soft);
    transition: border-color 0.3s ease;
}

.kot-calc-root .card:hover {
    border-color: rgba(45, 131, 92, 0.2);
}

.kot-calc-root .card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.kot-calc-root .card-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.kot-calc-root .card-icon.blue { background: var(--accent-green-glow); color: var(--accent-green); }
.kot-calc-root .card-icon.emerald { background: var(--accent-green-glow); color: var(--accent-green); }
.kot-calc-root .card-icon.amber { background: var(--accent-burgundy-glow); color: var(--accent-burgundy); }
.kot-calc-root .card-icon.violet { background: var(--accent-green-glow); color: var(--accent-green); }

.kot-calc-root .card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
}

.kot-calc-root .card-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.kot-calc-root .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.kot-calc-root .form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.kot-calc-root .form-group.full-width {
    grid-column: 1 / -1;
}

.kot-calc-root .form-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.kot-calc-root .form-label .tooltip-icon {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(100, 116, 139, 0.2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--text-muted);
    cursor: help;
    position: relative;
}

.kot-calc-root .form-label .tooltip-icon:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: #1e293b;
    color: white;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 400;
    white-space: nowrap;
    border: 1px solid var(--border-subtle);
    z-index: 100;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.kot-calc-root .form-input,
.kot-calc-root .form-select {
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
    outline: none;
    width: 100%;
}

.kot-calc-root .form-input:focus,
.kot-calc-root .form-select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-green-glow);
}

/* Fixed bureau costs field */
.kot-calc-root .form-input.bureau-costs-fixed {
    background: #f1f5f9;
    color: var(--text-muted);
    cursor: not-allowed;
}

.kot-calc-root .form-prefix {
    position: relative;
}

.kot-calc-root .form-prefix .prefix {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    pointer-events: none;
}

.kot-calc-root .form-prefix .form-input {
    padding-left: 30px;
}

.kot-calc-root .form-select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8.5L1 3.5h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

/* ============================================
   CHILDREN SECTION
   ============================================ */
.kot-calc-root .child-entry {
    padding: 20px;
    background: #f8fafc;
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 12px;
    position: relative;
}

.kot-calc-root .child-entry-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.kot-calc-root .child-entry-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-green);
    display: flex;
    align-items: center;
    gap: 8px;
}

.kot-calc-root .child-badge {
    font-size: 10px;
    padding: 2px 8px;
    background: var(--accent-green-glow);
    color: var(--accent-green);
    border-radius: 100px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kot-calc-root .remove-child-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-burgundy-glow);
    border: 1px solid rgba(133, 27, 48, 0.1);
    color: var(--accent-burgundy);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all 0.2s ease;
}

.kot-calc-root .remove-child-btn:hover {
    background: rgba(133, 27, 48, 0.2);
    transform: scale(1.1);
}

.kot-calc-root .add-child-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 16px;
    border: 2px solid var(--accent-green);
    border-radius: var(--radius-md);
    background: rgba(45, 131, 92, 0.08);
    color: var(--accent-green);
    font-family: inherit;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s ease;
}

.kot-calc-root .add-child-btn:hover {
    background: var(--accent-green);
    color: #ffffff;
}

/* ============================================
   RESULTS
   ============================================ */
.kot-calc-root .results-card {
    background: #ffffff;
    border: 1px solid rgba(45, 131, 92, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

/* Results grid */
.kot-calc-root .results-grid.results-grid-single {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.kot-calc-root .result-tile {
    background: #f8fafc;
    border-radius: var(--radius-md);
    padding: 18px;
    border: 1px solid var(--border-subtle);
    transition: transform 0.2s ease;
    text-align: center;
}

.kot-calc-root .result-tile.result-tile-prominent {
    width: 100%;
    max-width: 500px;
    padding: 32px 24px;
}

.kot-calc-root .result-tile:hover {
    transform: translateY(-2px);
}

.kot-calc-root .result-tile.highlight {
    background: var(--accent-green-glow);
    border-color: rgba(45, 131, 92, 0.1);
}

.kot-calc-root .result-tile.negative {
    background: var(--accent-burgundy-glow);
    border-color: rgba(133, 27, 48, 0.08);
}

.kot-calc-root .result-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.kot-calc-root .result-tile-prominent .result-label {
    font-size: 13px;
    margin-bottom: 12px;
}

.kot-calc-root .result-value {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.kot-calc-root .result-tile-prominent .result-value {
    font-size: 42px;
}

.kot-calc-root .result-value.text-emerald { color: var(--accent-green); }
.kot-calc-root .result-value.text-blue { color: var(--accent-green); }
.kot-calc-root .result-value.text-amber { color: var(--accent-burgundy); }
.kot-calc-root .result-value.text-rose { color: var(--accent-burgundy); }

.kot-calc-root .result-sub {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ============================================
   SPECIFICATION TOGGLE BUTTON
   ============================================ */
.kot-calc-root .toggle-spec-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 16px;
    background: rgba(133, 27, 48, 0.08);
    border: 2px solid var(--accent-burgundy);
    border-radius: var(--radius-md);
    color: var(--accent-burgundy);
    font-family: inherit;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s ease;
    margin-top: 20px;
}

.kot-calc-root .toggle-spec-btn:hover {
    background: var(--accent-burgundy);
    color: #ffffff;
}

/* Breakdown Table */
.kot-calc-root .breakdown-section {
    margin-top: 16px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.kot-calc-root .breakdown-table {
    width: 100%;
    border-collapse: collapse;
}

.kot-calc-root .breakdown-table th {
    text-align: left;
    font-size: 10px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-subtle);
}

.kot-calc-root .breakdown-table td {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 10px 12px;
    border-bottom: 1px solid rgba(0,0,0,0.02);
}

.kot-calc-root .breakdown-table .positive { color: var(--accent-green); font-weight: 700; }
.kot-calc-root .breakdown-table .cost { color: var(--accent-burgundy); font-weight: 700; }
.kot-calc-root .breakdown-table .net { color: var(--accent-green); font-weight: 700; }

.kot-calc-root .breakdown-table tfoot td {
    font-weight: 700;
    color: var(--text-primary);
    border-top: 2px solid var(--accent-green-glow);
    padding-top: 12px;
}

/* ============================================
   INFO BAR
   ============================================ */
.kot-calc-root .info-bar {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 18px;
    background: var(--accent-burgundy-glow);
    border: 1px solid rgba(133, 27, 48, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.kot-calc-root .info-bar-text {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ============================================
   CALCULATE BUTTON
   ============================================ */
.kot-calc-root .calculate-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px 24px;
    background: var(--gradient-accent);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-family: inherit;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(45, 131, 92, 0.2);
    margin-bottom: 20px;
}

.kot-calc-root .calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(45, 131, 92, 0.3);
}

/* ============================================
   PERCENTAGE INDICATOR
   ============================================ */
.kot-calc-root .percentage-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: #f1f5f9;
    border-radius: var(--radius-sm);
    margin-top: 12px;
}

.kot-calc-root .percentage-track {
    flex: 1;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    overflow: hidden;
}

.kot-calc-root .percentage-fill {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 3px;
    transition: width 0.5s ease;
}

.kot-calc-root .percentage-value {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent-green);
    min-width: 52px;
    text-align: right;
}

/* ============================================
   CTA SECTION
   ============================================ */
.kot-calc-root .cta-card {
    background: var(--gradient-card);
    border: 1px solid rgba(45, 131, 92, 0.15);
}

.kot-calc-root .cta-content {
    display: flex;
    align-items: center;
    gap: 20px;
}

.kot-calc-root .cta-icon {
    font-size: 36px;
    flex-shrink: 0;
}

.kot-calc-root .cta-text {
    flex: 1;
}

.kot-calc-root .cta-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.kot-calc-root .cta-description {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

.kot-calc-root .cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: var(--gradient-accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(45, 131, 92, 0.2);
    white-space: nowrap;
    flex-shrink: 0;
}

.kot-calc-root .cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(45, 131, 92, 0.3);
}

/* ============================================
   FOOTER
   ============================================ */
.kot-calc-root .calc-footer {
    text-align: center;
    margin-top: 24px;
    padding: 12px;
}

.kot-calc-root .calc-footer p {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 640px) {
    .kot-calc-root .form-grid { grid-template-columns: 1fr; }
    .kot-calc-root .results-grid.results-grid-single { flex-direction: column; }
    .kot-calc-root .result-tile.result-tile-prominent { padding: 24px 16px; }
    .kot-calc-root .result-tile-prominent .result-value { font-size: 32px; }

    /* Stacked Table Layout */
    .kot-calc-root .breakdown-section { overflow-x: visible; }
    .kot-calc-root .breakdown-table thead { display: none; }
    .kot-calc-root .breakdown-table, 
    .kot-calc-root .breakdown-table tbody, 
    .kot-calc-root .breakdown-table tfoot,
    .kot-calc-root .breakdown-table tr, 
    .kot-calc-root .breakdown-table td { 
        display: block; 
        width: 100%; 
    }
    
    .kot-calc-root .breakdown-table tr {
        margin-bottom: 16px;
        background: #f8fafc;
        border-radius: var(--radius-md);
        padding: 12px;
        border: 1px solid var(--border-subtle);
    }
    
    .kot-calc-root .breakdown-table tfoot tr {
        background: var(--accent-green-glow);
        border-color: var(--accent-green);
    }

    .kot-calc-root .breakdown-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 8px 0;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        text-align: right;
        font-size: 13px;
    }
    
    .kot-calc-root .breakdown-table td:last-child { border-bottom: none; }
    
    .kot-calc-root .breakdown-table td::before {
        content: attr(data-label);
        font-weight: 700;
        text-transform: uppercase;
        font-size: 10px;
        color: var(--text-muted);
        text-align: left;
        margin-right: 12px;
    }

    .kot-calc-root .cta-content { flex-direction: column; text-align: center; }
    .kot-calc-root .cta-button { width: 100%; }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.kot-calc-root .animate-in {
    animation: fadeInUp 0.4s ease forwards;
}

.kot-calc-root .results-card {
    animation: fadeInUp 0.4s ease forwards;
}