* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--app-font-family);
    color: var(--app-text-primary);
}

.calculators-page {
    max-width: var(--app-page-max-width);
    margin: 0 auto;
    padding: var(--app-page-padding);
}

.panel {
    border-radius: var(--app-radius-card);
    padding: 26px;
    background: var(--app-surface-bg);
    border: 1px solid var(--app-surface-border);
    backdrop-filter: blur(16px);
    box-shadow: var(--app-surface-shadow);
}

.panel-header {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 18px;
}

.panel-header h3,
.tabs-header h2,
.calculators-hero h1 {
    margin: 0;
}

.panel-kicker {
    color: var(--app-link-accent);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.calculators-hero {
    display: grid;
    gap: 18px;
    margin-bottom: 24px;
    background: var(--app-card-bg-strong);
}

.calculators-hero h1 {
    font-size: clamp(2rem, 3.5vw, 3rem);
    margin-bottom: 10px;
}

.calculators-hero p {
    max-width: 100%;
    margin: 0;
    color: var(--app-text-secondary);
    line-height: 1.6;
}

.calculator-tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.calculator-tab {
    width: 100%;
    padding: 18px;
    border-radius: 20px;
    border: 1px solid var(--app-item-border-soft);
    background: var(--app-item-bg-soft);
    color: var(--app-text-primary);
    text-align: left;
    cursor: pointer;
    transition: 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.calculator-tab:hover {
    transform: translateY(-1px);
    background: var(--app-row-hover-bg);
}

.calculator-tab.is-active {
    border-color: var(--app-secondary-border);
    background: var(--app-secondary-bg);
}

.tab-title {
    font-weight: 700;
    font-size: 1rem;
}

.tab-subtitle {
    color: var(--app-text-muted);
    font-size: 0.92rem;
}

.calculator-view[hidden] {
    display: none;
}

.calculator-main-grid {
    display: grid;
    grid-template-columns: 1.35fr 0.95fr;
    gap: 22px;
    margin-bottom: 24px;
}

.bottom-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 22px;
    margin-bottom: 24px;
}

.single-column-grid {
    grid-template-columns: 1fr;
}

.form-panel {
    display: flex;
    flex-direction: column;
}

.calculator-form {
    display: grid;
    gap: 18px;
}

.form-grid {
    display: grid;
    gap: 16px;
}

.form-grid.two-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.field-group span {
    color: var(--app-text-secondary);
    font-size: 0.92rem;
}

.field-group input,
.field-group select {
    width: 100%;
    padding: 13px 14px;
    border-radius: 14px;
    background: var(--app-input-bg);
    border: 1px solid var(--app-input-border);
    color: var(--app-text-primary);
    outline: none;
    transition: 0.2s ease;
}

.field-group select,
.field-group input[type="number"] {
    color-scheme: var(--app-color-scheme);
}

.field-group select option,
.field-group select optgroup {
    background: var(--app-select-option-bg);
    color: var(--app-select-option-text);
}

.field-group select optgroup {
    color: var(--app-text-secondary);
}

.field-group input:focus,
.field-group select:focus {
    border-color: var(--app-focus-border-color);
    box-shadow: var(--app-focus-ring);
}

.checkbox-card {
    justify-content: center;
    min-height: 100%;
    padding: 14px;
    border-radius: 16px;
    background: var(--app-item-bg-soft);
    border: 1px solid var(--app-item-border-soft);
}

.inline-checkbox {
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

.inline-checkbox input {
    width: 18px;
    height: 18px;
    margin: 0;
}

.inline-checkbox span {
    color: var(--app-text-primary);
    line-height: 1.45;
}

.hero-summary-card {
    padding: 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--app-card-bg-strong);
}

.summary-accent-blue {
    background: rgba(30, 64, 175, 0.22);
}

.summary-accent-cyan {
    background: rgba(8, 47, 73, 0.86);
}

.summary-accent-emerald {
    background: rgba(6, 95, 70, 0.86);
}

.summary-label {
    color: var(--app-link-accent);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
}

.hero-summary-card h2 {
    font-size: clamp(2.4rem, 5vw, 4rem);
    margin: 0;
    line-height: 1;
}

.hero-summary-caption {
    margin: 14px 0 24px;
    color: var(--app-text-secondary);
    line-height: 1.5;
}

.hero-summary-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.hero-summary-metrics div {
    padding: 16px;
    border-radius: 18px;
    background: var(--app-item-bg-soft);
    border: 1px solid var(--app-item-border-soft);
}

.hero-summary-metrics span {
    display: block;
    color: var(--app-text-muted);
    font-size: 0.88rem;
    margin-bottom: 8px;
}

.hero-summary-metrics strong {
    font-size: 1.15rem;
}

.insight-panel {
    display: flex;
    flex-direction: column;
}

.stack-bars,
.projection-bars {
    display: grid;
    gap: 14px;
}

.bar-item,
.projection-item {
    display: grid;
    gap: 8px;
}

.bar-item-header,
.projection-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.95rem;
}

.bar-track,
.projection-track {
    width: 100%;
    height: 14px;
    border-radius: 999px;
    overflow: hidden;
    background: var(--app-item-bg-soft);
    border: 1px solid var(--app-item-border-soft);
}

.bar-fill,
.projection-fill {
    height: 100%;
    border-radius: inherit;
    background: rgba(59, 130, 246, 0.85);
}

.projection-fill {
    background: rgba(16, 185, 129, 0.85);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.stat-card {
    padding: 22px;
    border-radius: 22px;
    background: var(--app-item-bg-soft);
    border: 1px solid var(--app-item-border-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    min-height: 152px;
}

.stat-label {
    color: var(--app-text-muted);
    font-size: 0.95rem;
    margin-bottom: 8px;
    text-align: center;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
}

.stat-subvalue {
    margin-top: 8px;
    color: var(--app-text-secondary);
    font-size: 0.95rem;
    font-weight: 700;
    text-align: center;
}

.calculator-note-card {
    align-items: flex-start;
    justify-content: flex-start;
}

.calculator-note {
    margin: 6px 0 0;
    color: var(--app-text-secondary);
    line-height: 1.55;
}

.panel-scrollable {
    display: flex;
    flex-direction: column;
}

.result-table-shell {
    overflow-x: auto;
    border-radius: 18px;
    background: var(--app-item-bg-soft);
    border: 1px solid var(--app-item-border-soft);
}

.large-shell {
    max-height: 460px;
    overflow: auto;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 680px;
}

.result-table thead th {
    position: sticky;
    top: 0;
    z-index: 1;
    background: var(--app-surface-bg-strong);
}

.result-table th,
.result-table td {
    text-align: left;
    padding: 14px 16px;
    border-bottom: 1px solid var(--app-row-divider-soft);
    font-size: 0.95rem;
}

.result-table th {
    color: var(--app-text-secondary);
    font-weight: 700;
}

.result-table td {
    color: var(--app-text-primary);
}

.result-table td:last-child,
.result-table th:last-child {
    text-align: right;
}

.result-table td:nth-child(2),
.result-table th:nth-child(2),
.result-table td:nth-child(3),
.result-table th:nth-child(3),
.result-table td:nth-child(4),
.result-table th:nth-child(4) {
    text-align: right;
}

.status-good {
    color: #86efac;
}

.status-warning {
    color: #fcd34d;
}

.status-bad {
    color: #fca5a5;
}

@media (max-width: 1150px) {
    .calculator-main-grid,
    .bottom-grid,
    .calculator-tabs,
    .metrics-grid,
    .form-grid.two-columns {
        grid-template-columns: 1fr;
    }

}

@media (max-width: 720px) {
    .calculators-page {
        padding: 18px;
    }

    .calculators-hero {
        gap: 12px;
        padding: 16px;
    }

    .calculators-hero h1 {
        font-size: 1.65rem;
    }

    .calculators-hero p {
        font-size: 0.92rem;
        line-height: 1.5;
    }

    .calculator-tabs {
        gap: 8px;
    }

    .calculator-tab {
        padding: 10px 8px;
        border-radius: 14px;
        min-height: 0;
        gap: 2px;
        align-items: center;
        text-align: center;
    }

    .tab-title {
        font-size: 0.88rem;
    }

    .tab-subtitle {
        display: none;
    }

    .panel,
    .hero-summary-card {
        padding: 20px;
        border-radius: 22px;
    }

    .field-group input,
    .field-group select {
        padding: 11px 12px;
    }

    .hero-summary-metrics {
        grid-template-columns: 1fr;
    }

    .stat-card {
        min-height: auto;
        padding: 18px;
    }

    .result-table-shell {
        overflow: hidden;
    }

    .large-shell {
        max-height: none;
        overflow: hidden;
    }

    .result-table {
        min-width: 0;
        table-layout: fixed;
    }

    .result-table th,
    .result-table td {
        padding: 12px 10px;
        font-size: 0.88rem;
        white-space: normal;
        overflow-wrap: anywhere;
    }
}