.fraction-calculator {
    padding-top: 18px;
}

.fraction-header {
    max-width: 900px;
    margin: 36px 0 38px;
}

.fraction-kicker,
.fraction-feedback-label {
    margin: 0 0 12px;
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.fraction-header h1 {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(50px, 7vw, 78px);
    font-weight: 400;
    line-height: 0.98;
    letter-spacing: -0.055em;
    text-wrap: balance;
}

.fraction-lead {
    max-width: 780px;
    margin: 20px 0 0;
    color: var(--muted);
    font-size: clamp(17px, 1.8vw, 20px);
    line-height: 1.6;
}

.fraction-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: 20px;
    align-items: stretch;
}

.fraction-panel {
    min-width: 0;
    padding: clamp(26px, 3.2vw, 40px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.82);
    box-shadow: var(--shadow-soft);
}

.fraction-panel h2,
.fraction-panel h3 {
    margin: 0;
}

.fraction-panel h2 {
    font-family: var(--font-display);
    font-size: clamp(30px, 3.2vw, 42px);
    font-weight: 400;
    line-height: 1.06;
    letter-spacing: -0.04em;
    text-wrap: balance;
}

.fraction-form-panel > form {
    margin-top: 28px;
}

.fraction-form-panel .form-group {
    margin: 24px 0 0;
}

.fraction-form-panel .form-group label {
    font-size: 15px;
}

.fraction-form-panel input {
    min-height: 52px;
    font-size: 16px;
}

.fraction-mode-fieldset {
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.fraction-mode-fieldset legend {
    margin-bottom: 10px;
    padding: 0;
    font-size: 15px;
    font-weight: 700;
}

.fraction-mode-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.fraction-mode-option {
    min-width: 0;
    padding: 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.72);
    display: flex;
    align-items: flex-start;
    gap: 11px;
    cursor: pointer;
    transition:
        border-color var(--motion-standard),
        background var(--motion-standard),
        box-shadow var(--motion-standard);
}

.fraction-mode-option:hover {
    border-color: rgba(31, 95, 74, 0.3);
    background: rgba(237, 247, 242, 0.86);
}

.fraction-mode-option:has(input:checked) {
    border-color: rgba(31, 95, 74, 0.44);
    background: var(--accent-soft);
    box-shadow: inset 0 0 0 1px rgba(31, 95, 74, 0.08);
}

.fraction-mode-option:has(input:focus-visible) {
    outline: 3px solid rgba(31, 95, 74, 0.24);
    outline-offset: 3px;
}

.fraction-mode-option input {
    width: 18px;
    height: 18px;
    min-height: 0;
    margin: 2px 0 0;
    padding: 0;
    flex: 0 0 auto;
    accent-color: var(--accent);
}

.fraction-mode-option strong,
.fraction-mode-option small {
    display: block;
}

.fraction-mode-option strong {
    font-size: 14px;
    line-height: 1.35;
}

.fraction-mode-option small {
    margin-top: 5px;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.45;
}

.fraction-input-with-unit {
    position: relative;
}

.fraction-input-with-unit input {
    padding-right: 70px;
}

.fraction-input-with-unit > span {
    position: absolute;
    top: 50%;
    right: 16px;
    color: var(--muted);
    font-size: 14px;
    transform: translateY(-50%);
    pointer-events: none;
}

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

.fraction-field-note {
    margin: 10px 0 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.6;
}

.fraction-submit {
    width: 100%;
    min-height: 52px;
    margin-top: 26px;
    font-size: 15px;
}

.fraction-feedback {
    scroll-margin-top: 100px;
    background: linear-gradient(145deg, rgba(232, 243, 237, 0.94), rgba(248, 251, 249, 0.96));
}

.fraction-feedback:focus-visible {
    outline: 3px solid rgba(31, 95, 74, 0.24);
    outline-offset: 4px;
}

.fraction-feedback > p:not(.fraction-feedback-label, .fraction-copy-status) {
    margin: 20px 0 0;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.7;
}

.fraction-examples {
    margin: 28px 0 0;
}

.fraction-examples > div {
    padding: 20px 0;
    border-top: 1px solid rgba(31, 95, 74, 0.16);
}

.fraction-examples dt {
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.fraction-examples dd {
    margin: 8px 0 0;
    font-size: 22px;
    font-weight: 700;
    line-height: 1.3;
}

.fraction-result-description {
    padding-bottom: 22px;
    border-bottom: 1px solid rgba(31, 95, 74, 0.16);
}

.fraction-copy {
    margin-top: 20px;
    border: 1px solid rgba(31, 95, 74, 0.22);
    background: rgba(255, 255, 255, 0.68);
    color: var(--accent-hover);
    box-shadow: none;
}

.fraction-copy:hover {
    background: #ffffff;
}

.fraction-copy-status {
    min-height: 1.5em;
    margin: 10px 0 0;
    color: var(--muted);
    font-size: 13px;
}

.fraction-download {
    margin-top: 18px;
    padding-top: 24px;
    border-top: 1px solid rgba(31, 95, 74, 0.16);
    display: flex;
    flex-wrap: wrap;
    gap: 14px 12px;
    align-items: center;
}

.fraction-download h3 {
    flex-basis: 100%;
    font-size: 17px;
}

.fraction-download .pdf-brand-option {
    width: fit-content;
    min-height: 42px;
    margin: 0;
    padding: 10px 12px;
    border: 1px solid rgba(31, 95, 74, 0.16);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.68);
    gap: 10px;
    cursor: pointer;
}

.fraction-download .pdf-brand-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
}

.fraction-error {
    border-color: var(--danger-border);
    background: var(--danger-bg);
}

.fraction-error .fraction-feedback-label,
.fraction-error h2,
.fraction-error > p:not(.fraction-feedback-label) {
    color: var(--danger-text);
}

.fraction-calculator > .related-articles {
    margin-top: 34px;
}

@media (max-width: 860px) {
    .fraction-calculator {
        padding-top: 0;
    }

    .fraction-header {
        margin: 28px 0 30px;
    }

    .fraction-header h1 {
        font-size: clamp(46px, 13vw, 62px);
    }

    .fraction-layout {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

@media (max-width: 540px) {
    .fraction-header h1 {
        font-size: clamp(41px, 12.5vw, 52px);
    }

    .fraction-panel {
        padding: 24px 20px;
        border-radius: var(--radius-md);
    }

    .fraction-mode-options,
    .fraction-time-grid {
        grid-template-columns: 1fr;
    }

    .fraction-download button,
    .fraction-download .pdf-brand-option {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .fraction-calculator *,
    .fraction-calculator *::before,
    .fraction-calculator *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}