/**
 * Dự Toán Chi Phí — Pure CSS
 */

.sh-calc { padding: 6rem 0 2rem; background: var(--pi-bg, #f9fafb); min-height: 100vh; border-top: 1px solid var(--pi-border, #e2e8f0); }
.sh-calc__container { max-width: 80rem; margin: 0 auto; padding: 0 1rem; }

/* Header */
.sh-calc__header { text-align: center; margin-bottom: 1.25rem; }
@media (min-width: 1024px) { .sh-calc__header { margin-bottom: 1.5rem; } }
.sh-calc__title { font-size: 1.25rem; font-weight: 900; text-transform: uppercase; letter-spacing: -0.05em; margin: 0; }
@media (min-width: 768px) { .sh-calc__title { font-size: 1.5rem; } }
.sh-calc__title-accent { color: var(--pi-primary, #007d3d); }
.sh-calc__title-muted { color: var(--pi-text-muted, #64748b); }
.sh-calc__subtitle { color: var(--pi-text-3, #94a3b8); margin: 0.25rem 0 0; font-size: 0.75rem; }

/* Layout */
.sh-calc__layout { display: grid; grid-template-columns: 1fr; gap: 1.5rem; align-items: start; }
@media (min-width: 1280px) { .sh-calc__layout { grid-template-columns: 7fr 5fr; gap: 2rem; } }

/* Form */
.sh-calc__form { background: var(--pi-bg-card, #ffffff); padding: 1rem; border-radius: 1rem; box-shadow: 0 20px 40px rgba(0,0,0,0.08); border: 1px solid var(--pi-border-light, #f1f5f9); display: flex; flex-direction: column; gap: 0.75rem; }
@media (min-width: 1024px) { .sh-calc__form { padding: 1.25rem; gap: 1rem; } }

/* Group */
.sh-calc__group-label { display: flex; align-items: center; gap: 0.5rem; font-size: 0.625rem; font-weight: 700; color: var(--pi-primary, #007d3d); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.5rem; border-bottom: 1px solid var(--pi-border-light, #f1f5f9); padding-bottom: 0.25rem; }
.sh-calc__dot { width: 0.375rem; height: 0.375rem; background: var(--pi-secondary, #ffb703); border-radius: 50%; }

/* Rows */
.sh-calc__row { display: grid; gap: 0.75rem; }
.sh-calc__row--2col { grid-template-columns: 1fr 1fr; }
.sh-calc__row--3col { grid-template-columns: 1fr; }
@media (min-width: 768px) { .sh-calc__row--3col { grid-template-columns: 1fr 1fr 1fr; } }

/* Field */
.sh-calc__field-label { display: block; font-size: 0.625rem; font-weight: 700; color: var(--pi-text-3, #94a3b8); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.25rem; }

.sh-calc__select { width: 100%; padding: 0.5rem 0.75rem; font-size: 0.875rem; border: 1px solid var(--pi-border, #e2e8f0); border-radius: 0.5rem; color: var(--pi-text, #1e293b); font-weight: 600; background: var(--pi-bg-card, #ffffff); outline: none; transition: border-color 0.2s; }
.sh-calc__select:focus { border-color: var(--pi-primary, #007d3d); box-shadow: 0 0 0 1px var(--pi-primary, #007d3d); }

.sh-calc__input-box { background: var(--pi-bg-alt, #f3f4f6); border-radius: 0.5rem; padding: 0.75rem; border: 1px solid var(--pi-border-light, #f1f5f9); }

.sh-calc__number-input { width: 100%; background: transparent; border: none; border-bottom: 2px solid var(--pi-border, #e2e8f0); padding: 0.125rem 0; font-size: 1.25rem; font-weight: 900; color: var(--pi-text, #1e293b); outline: none; transition: color 0.2s, border-color 0.2s; }
.sh-calc__number-input:focus { color: var(--pi-primary, #007d3d); border-bottom-color: var(--pi-primary, #007d3d); }

/* Radio Cards */
.sh-calc__radio-card { cursor: pointer; position: relative; display: block; }
.sh-calc__radio-input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.sh-calc__radio-body { padding: 0.75rem; border-radius: 0.5rem; border: 2px solid var(--pi-border, #e2e8f0); transition: all 0.2s; }
.sh-calc__radio-input:checked ~ .sh-calc__radio-body { border-color: var(--pi-primary, #007d3d); background: color-mix(in srgb, var(--pi-primary, #007d3d) 5%, transparent); }
.sh-calc__radio-title { font-weight: 700; font-size: 0.875rem; color: var(--pi-text, #1e293b); }
.sh-calc__radio-desc { font-size: 0.625rem; color: var(--pi-text-3, #94a3b8); }
.sh-calc__radio-check { position: absolute; top: 0.75rem; right: 0.75rem; color: var(--pi-primary, #007d3d); opacity: 0; }
.sh-calc__radio-input:checked ~ .sh-calc__radio-check { opacity: 1; }
.sh-calc__radio-check-icon { width: 1.25rem; height: 1.25rem; }

/* Result Column */
.sh-calc__result-col { position: relative; }
.sh-calc__result-sticky { position: sticky; top: 6rem; }

/* Receipt */
.sh-calc__receipt { background: var(--pi-bg-card, #ffffff); border-radius: 1rem; padding: 1rem; box-shadow: 0 20px 50px -12px rgba(0,0,0,0.1); border: 1px solid var(--pi-border-light, #f1f5f9); }
@media (min-width: 1024px) { .sh-calc__receipt { padding: 1.25rem; } }

.sh-calc__receipt-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 2px solid var(--pi-primary, #007d3d); padding-bottom: 0.75rem; margin-bottom: 1rem; }
.sh-calc__receipt-title { font-size: 1.125rem; font-weight: 900; color: var(--pi-text, #1e293b); text-transform: uppercase; letter-spacing: -0.05em; margin: 0; }
.sh-calc__receipt-brand { font-weight: 900; color: var(--pi-primary, #007d3d); letter-spacing: -0.05em; font-size: 1rem; }

.sh-calc__receipt-section { margin-bottom: 1rem; }
.sh-calc__receipt-label { font-size: 0.625rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--pi-text-muted, #64748b); margin: 0 0 0.5rem; }
.sh-calc__receipt-rows { display: flex; flex-direction: column; gap: 0.375rem; font-size: 0.875rem; color: var(--pi-text-2, #475569); }

.sh-calc__receipt-total-row { display: flex; justify-content: space-between; align-items: center; margin-top: 0.75rem; padding-top: 0.75rem; border-top: 1px solid var(--pi-border-light, #f1f5f9); }
.sh-calc__receipt-total-label { font-weight: 700; font-size: 0.875rem; color: var(--pi-text, #1e293b); }
.sh-calc__receipt-total-value { font-size: 1rem; font-weight: 900; color: var(--pi-primary, #007d3d); }

/* Price Box */
.sh-calc__receipt-price-box { margin-bottom: 1rem; padding: 0.75rem; background: var(--pi-bg-alt, #f3f4f6); border-radius: 0.5rem; border: 1px solid var(--pi-border-light, #f1f5f9); }
.sh-calc__receipt-price-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.25rem; }
.sh-calc__receipt-price-label { font-size: 0.75rem; font-weight: 600; color: var(--pi-text-2, #475569); }
.sh-calc__receipt-price-value { font-weight: 700; font-size: 0.875rem; color: var(--pi-text, #1e293b); }

.sh-calc__receipt-fee-row { display: flex; justify-content: space-between; align-items: center; font-size: 0.75rem; color: var(--pi-danger, #dc2626); font-style: italic; margin-bottom: 0.25rem; }
.sh-calc__receipt-fee-row span:last-child { font-weight: 700; }

.sh-calc__receipt-grand { margin-top: 0.75rem; padding-top: 0.75rem; border-top: 1px solid var(--pi-border, #e2e8f0); }
.sh-calc__receipt-grand-label { display: block; font-size: 0.625rem; font-weight: 700; color: var(--pi-text-muted, #64748b); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.125rem; }
.sh-calc__receipt-grand-value { font-size: 1.25rem; font-weight: 900; color: var(--pi-secondary, #ffb703); letter-spacing: -0.05em; line-height: 1.2; word-break: break-all; overflow-wrap: anywhere; }
@media (min-width: 640px) { .sh-calc__receipt-grand-value { font-size: 1.5rem; } }

/* CTA */
.sh-calc__receipt-cta { display: block; width: 100%; padding: 0.75rem; background: var(--pi-primary, #007d3d); color: #fff; font-weight: 700; text-align: center; text-transform: uppercase; letter-spacing: 0.1em; text-decoration: none; border-radius: 0.5rem; font-size: 0.75rem; transition: background 0.2s, box-shadow 0.2s; }
.sh-calc__receipt-cta:hover { background: #15803d; box-shadow: 0 4px 12px rgba(0,0,0,0.15); }

.sh-calc__receipt-note { font-size: 0.5625rem; color: var(--pi-text-muted, #64748b); text-align: center; margin: 0.5rem 0 0; font-family: monospace; line-height: 1.625; }

/* Dark Mode */
.dark .sh-calc { background: var(--pi-bg, #0f172a); border-top-color: var(--pi-border, #334155); }
.dark .sh-calc__title-muted { color: var(--pi-text-muted, #64748b); }
.dark .sh-calc__form { background: var(--pi-bg-card, #1e293b); border-color: var(--pi-border, #334155); }
.dark .sh-calc__group-label { border-bottom-color: var(--pi-border, #334155); }
.dark .sh-calc__select { background: var(--pi-bg-elevated, #334155); border-color: var(--pi-border, #334155); color: var(--pi-text, #f1f5f9); }
.dark .sh-calc__input-box { background: var(--pi-bg-elevated, #334155); border-color: var(--pi-border, #334155); }
.dark .sh-calc__number-input { color: var(--pi-text, #f1f5f9); border-bottom-color: var(--pi-border, #334155); }
.dark .sh-calc__field-label { color: var(--pi-text-2, #e2e8f0); }
.dark .sh-calc__radio-body { border-color: var(--pi-border, #334155); }
.dark .sh-calc__radio-input:checked ~ .sh-calc__radio-body { background: color-mix(in srgb, var(--pi-primary, #007d3d) 10%, transparent); }
.dark .sh-calc__radio-title { color: var(--pi-text, #f1f5f9); }
.dark .sh-calc__receipt { background: var(--pi-bg-card, #1e293b); border-color: var(--pi-border, #334155); }
.dark .sh-calc__receipt-title { color: var(--pi-text, #f1f5f9); }
.dark .sh-calc__receipt-rows { color: var(--pi-text-2, #e2e8f0); }
.dark .sh-calc__receipt-total-label { color: var(--pi-text, #f1f5f9); }
.dark .sh-calc__receipt-price-box { background: var(--pi-bg-elevated, #334155); border-color: var(--pi-border, #334155); }
.dark .sh-calc__receipt-price-value { color: var(--pi-text, #f1f5f9); }
.dark .sh-calc__receipt-grand { border-top-color: var(--pi-border, #334155); }