/**
 * Simplifying Fraction Calculator Styles
 * 約分計算機スタイル - Simple fraction reducer
 *
 * Features:
 * - Single fraction input (numerator/denominator)
 * - Real-time simplification
 * - GCD calculation display
 * - Mobile-first responsive design
 */

/* ========================================
   1. Calculator Container
   ======================================== */
.simplify-calculator-compact {
    display: flex;
    flex-wrap: nowrap;
    gap: 20px;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ========================================
   2. Input Section
   ======================================== */
.simplify-input-section {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 3px solid #cbd5e0;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.simplify-input-section:hover {
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.08);
    border-color: #0066cc;
}

/* ========================================
   3. Fraction Input
   ======================================== */
.simplify-fraction-input {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 140px;
}

.simplify-fraction-input input {
    text-align: center;
    width: 100%;
    max-width: 140px;
    padding: 12px;
    font-size: 22px;
    font-weight: 600;
    border: 3px solid #cbd5e0;
    border-radius: 12px;
    min-height: 56px;
    transition: all 0.3s ease;
    background: white;
    color: #1a202c;
    -webkit-appearance: none;
    -moz-appearance: textfield;
}

.simplify-fraction-input input:focus {
    outline: none;
    border-color: #0066cc;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.2);
}

/* Remove spinner buttons */
.simplify-fraction-input input::-webkit-inner-spin-button,
.simplify-fraction-input input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* ========================================
   4. Fraction Line
   ======================================== */
.simplify-fraction-line {
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #0066cc 0%, #0088ff 100%);
    margin: 8px 0;
    border-radius: 2px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* ========================================
   5. Equals Sign
   ======================================== */
.simplify-equals {
    font-size: 40px;
    font-weight: bold;
    color: #0066cc;
    margin: 0 12px;
    flex-shrink: 0;
}

/* ========================================
   6. Result Section
   ======================================== */
.simplify-result-section {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 3px solid #0066cc;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.12);
    flex-shrink: 0;
}

/* ========================================
   7. Fraction Result
   ======================================== */
.simplify-fraction-result {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 140px;
}

.simplify-fraction-result-value {
    text-align: center;
    min-width: 120px;
    font-size: 28px;
    font-weight: bold;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0066cc;
}

/* ========================================
   8. Process Display (#process)
   ======================================== */
#process {
    margin-top: 32px;
    padding: 24px;
    background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
    border-radius: 12px;
    overflow-x: auto;
    width: 100%;
    box-sizing: border-box;
    border: 2px solid #fde047;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

#process p {
    margin-bottom: 12px;
}

#process strong {
    color: #0066cc;
}

/* ========================================
   9. Error Message
   ======================================== */
#errorMessage {
    display: none;
    margin-bottom: 16px;
}

#errorMessage[style*="display: block"] {
    display: block !important;
}

/* ========================================
   10. Responsive - Tablet (768px)
   ======================================== */
@media (max-width: 768px) {
    .simplify-calculator-compact {
        gap: 16px;
    }

    .simplify-fraction-input {
        min-width: 120px;
    }

    .simplify-fraction-input input {
        max-width: 120px;
        font-size: 20px;
        padding: 10px;
        min-height: 52px;
    }

    .simplify-equals {
        font-size: 36px;
        margin: 0 8px;
    }

    .simplify-fraction-result {
        min-width: 120px;
    }

    .simplify-fraction-result-value {
        font-size: 24px;
        min-height: 40px;
        min-width: 100px;
    }

    #process {
        padding: 20px;
    }
}

/* ========================================
   11. Responsive - Mobile (640px)
   ======================================== */
@media (max-width: 640px) {
    .simplify-calculator-compact {
        gap: 12px;
        padding: 0 8px;
    }

    .simplify-input-section,
    .simplify-result-section {
        padding: 16px;
    }

    .simplify-fraction-input {
        min-width: 110px;
    }

    .simplify-fraction-input input {
        max-width: 110px;
        font-size: 19px;
        min-height: 50px;
    }

    .simplify-equals {
        font-size: 34px;
        margin: 0 6px;
    }

    .simplify-fraction-result {
        min-width: 110px;
    }

    .simplify-fraction-result-value {
        font-size: 23px;
        min-height: 38px;
        min-width: 90px;
    }

    #process {
        padding: 16px;
        margin-left: -8px;
        margin-right: -8px;
        width: calc(100% + 16px);
    }
}

/* ========================================
   12. Responsive - Small Mobile (480px)
   ======================================== */
@media (max-width: 480px) {
    .simplify-calculator-compact {
        gap: 8px;
    }

    .simplify-input-section,
    .simplify-result-section {
        padding: 14px;
    }

    .simplify-fraction-input {
        min-width: 100px;
    }

    .simplify-fraction-input input {
        max-width: 100px;
        font-size: 18px;
        padding: 10px;
        min-height: 50px;
    }

    .simplify-equals {
        font-size: 32px;
        margin: 0 4px;
    }

    .simplify-fraction-result {
        min-width: 100px;
    }

    .simplify-fraction-result-value {
        font-size: 22px;
        min-height: 36px;
        min-width: 80px;
    }

    .simplify-fraction-line {
        height: 3px;
        margin: 6px 0;
    }

    #process {
        padding: 12px;
    }
}

/* ========================================
   13. Accessibility
   ======================================== */

/* Keyboard focus */
.simplify-fraction-input input:focus-visible {
    outline: 3px solid #0066cc;
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .simplify-fraction-input input,
    .simplify-input-section,
    .simplify-result-section {
        border-width: 4px;
    }

    .simplify-fraction-line {
        height: 6px;
    }
}

/* ========================================
   14. Print Styles
   ======================================== */
@media print {
    .simplify-input-section,
    .simplify-result-section {
        box-shadow: none;
        border: 2px solid #000;
    }

    .simplify-fraction-result-value {
        color: #000 !important;
    }

    .simplify-fraction-line {
        background: #000 !important;
    }

    #process {
        box-shadow: none;
        border: 2px solid #000;
    }
}