/* ============================================
   手取り計算ページ固有スタイル
   ============================================ */

/* --- Page Header --- */
.page-header {
    text-align: center;
    padding: var(--space-12) var(--space-6) var(--space-8);
    max-width: 700px;
    margin: 0 auto;
    animation: fadeInUp 0.6s ease-out;
}

.page-header__back {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    margin-bottom: var(--space-6);
    transition: color var(--transition-fast);
}

.page-header__back:hover {
    color: var(--color-accent-3);
}

.page-header__title {
    font-size: var(--text-4xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-3);
}

.page-header__desc {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --- Calculator Layout --- */
.calculator {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-6) var(--space-20);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    animation: fadeInUp 0.6s ease-out 0.15s both;
}

/* --- Input Panel --- */
.calc-panel {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    position: sticky;
    top: calc(var(--header-height) + var(--space-6));
    align-self: start;
}

.calc-panel__title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* --- Form Elements --- */
.form-group {
    margin-bottom: var(--space-6);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.form-label__hint {
    font-weight: 400;
    color: var(--color-text-tertiary);
    font-size: var(--text-xs);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper__prefix,
.input-wrapper__suffix {
    position: absolute;
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    pointer-events: none;
    z-index: 2;
}

.input-wrapper__suffix {
    right: var(--space-4);
}

.form-input {
    width: 100%;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-primary);
    font-size: var(--text-lg);
    font-weight: 600;
    text-align: right;
    transition: all var(--transition-fast);
    outline: none;
    -moz-appearance: textfield;
}

.form-input::-webkit-inner-spin-button,
.form-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.form-input--with-suffix {
    padding-right: var(--space-10);
}

.form-input:focus {
    background: var(--color-bg-input-focus);
    border-color: var(--color-accent-1);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-select {
    width: 100%;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-primary);
    font-size: var(--text-base);
    font-weight: 500;
    transition: all var(--transition-fast);
    outline: none;
    cursor: pointer;
    appearance: none;
    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 d='M6 8L1 3h10L6 8z' fill='%238888a0'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.form-select:focus {
    background-color: var(--color-bg-input-focus);
    border-color: var(--color-accent-1);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* Toggle Group */
.toggle-group {
    display: flex;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.toggle-group__btn {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.toggle-group__btn:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: var(--color-border);
}

.toggle-group__btn.is-active {
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
}

.toggle-group__btn:not(.is-active):hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-primary);
}

/* Checkbox */
.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    user-select: none;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-bg-input);
    appearance: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    flex-shrink: 0;
}

.form-checkbox input[type="checkbox"]:checked {
    background: var(--color-accent-1);
    border-color: var(--color-accent-1);
}

.form-checkbox input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 11px;
    font-weight: 700;
}

/* --- Result Panel --- */
.result-panel {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

/* Main Result Card */
.result-main {
    background: var(--gradient-card);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.result-main::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.1), transparent 70%);
    pointer-events: none;
}

.result-main__label {
    position: relative;
    z-index: 1;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-2);
}

.result-main__amount {
    position: relative;
    z-index: 1;
    font-size: var(--text-6xl);
    font-weight: 800;
    letter-spacing: -0.03em;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: var(--space-1);
    transition: transform var(--transition-spring);
}

.result-main__amount.is-updating {
    transform: scale(1.02);
}

.result-main__unit {
    position: relative;
    z-index: 1;
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.result-main__sub {
    position: relative;
    z-index: 1;
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: center;
    gap: var(--space-8);
}

.result-sub-item {
    text-align: center;
}

.result-sub-item__label {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-1);
}

.result-sub-item__value {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

/* Breakdown Card */
.result-breakdown {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
}

.result-breakdown__title {
    font-size: var(--text-base);
    font-weight: 700;
    margin-bottom: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.breakdown-item:last-child {
    border-bottom: none;
}

.breakdown-item__label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.breakdown-item__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.breakdown-item__value {
    font-size: var(--text-sm);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.breakdown-item__value--negative {
    color: var(--color-accent-rose);
}

.breakdown-item--total {
    border-top: 1px solid var(--color-border);
    border-bottom: none;
    padding-top: var(--space-4);
    margin-top: var(--space-2);
}

.breakdown-item--total .breakdown-item__label {
    font-weight: 700;
    color: var(--color-text-primary);
}

.breakdown-item--total .breakdown-item__value {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-accent-green);
}

/* Visual Bar Chart */
.result-chart {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
}

.result-chart__title {
    font-size: var(--text-base);
    font-weight: 700;
    margin-bottom: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.chart-bar-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.chart-bar {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.chart-bar__header {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
}

.chart-bar__track {
    width: 100%;
    height: 28px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
}

.chart-bar__fill {
    height: 100%;
    border-radius: var(--radius-md);
    transition: width var(--transition-slow);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: var(--space-3);
    font-size: var(--text-xs);
    font-weight: 600;
    color: white;
    min-width: 40px;
}

.chart-bar__fill--tedori {
    background: linear-gradient(90deg, #34d399, #6ee7b7);
}

.chart-bar__fill--shakai {
    background: linear-gradient(90deg, #6366f1, #818cf8);
}

.chart-bar__fill--tax {
    background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

/* Stacked bar */
.chart-stacked {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
}

.chart-stacked__title {
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-3);
    color: var(--color-text-secondary);
}

.chart-stacked__bar {
    display: flex;
    height: 40px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    gap: 2px;
}

.chart-stacked__segment {
    transition: width var(--transition-slow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: 600;
    color: white;
    min-width: 0;
    overflow: hidden;
}

.chart-stacked__legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.chart-stacked__legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
}

.chart-stacked__legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* --- Rate Display --- */
.result-rate {
    display: flex;
    gap: var(--space-4);
}

.rate-card {
    flex: 1;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    text-align: center;
}

.rate-card__label {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-2);
}

.rate-card__value {
    font-size: var(--text-2xl);
    font-weight: 700;
}

.rate-card__value--green {
    color: var(--color-accent-green);
}

.rate-card__value--rose {
    color: var(--color-accent-rose);
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .calculator {
        grid-template-columns: 1fr;
    }

    .calc-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: var(--space-8) var(--space-4) var(--space-4);
    }

    .page-header__title {
        font-size: var(--text-2xl);
    }

    .calculator {
        padding: 0 var(--space-4) var(--space-12);
    }

    .calc-panel,
    .result-main,
    .result-breakdown,
    .result-chart {
        padding: var(--space-5);
    }

    .result-main__amount {
        font-size: var(--text-4xl);
    }

    .result-main__sub {
        flex-direction: column;
        gap: var(--space-3);
    }

    .result-rate {
        flex-direction: column;
    }

    .chart-stacked__legend {
        gap: var(--space-3);
    }
}