.unit-converter-section {
    padding: 40px 0;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
}

.unit-converter-section .container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.calculator-header {
    text-align: center;
    margin-bottom: 40px;
}

.header-content {
    color: #fff;
}

.calculator-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.calculator-title i {
    font-size: 2.8rem;
}

.calculator-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 20px;
}

.calculator-badge {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.badge-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
}

.converter-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 30px;
}

.input-section {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

.category-tab {
    padding: 8px 16px;
    background: #f5f5f5;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-tab:hover {
    background: #ffe0e0;
}

.category-tab.active {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    color: #fff;
}

.input-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.input-value {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e8e8e8;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.input-value:focus {
    outline: none;
    border-color: #ff9a9e;
}

.select-row {
    display: flex;
    align-items: center;
    gap: 15px;
    margin: 20px 0;
}

.select-group {
    flex: 1;
}

.select-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: #666;
    margin-bottom: 8px;
}

.unit-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e8e8e8;
    border-radius: 8px;
    font-size: 0.95rem;
    background: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
}

.unit-select:focus {
    outline: none;
    border-color: #ff9a9e;
}

.swap-btn {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.swap-btn:hover {
    transform: rotate(180deg);
}

.convert-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.convert-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 154, 158, 0.4);
}

.result-section {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.result-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.result-title i {
    color: #ff9a9e;
}

.result-content {
    min-height: 180px;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
}

.empty-state i {
    font-size: 2.5rem;
    color: #ccc;
    margin-bottom: 15px;
}

.empty-state p {
    color: #999;
}

.convert-result {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.convert-from, .convert-to {
    display: flex;
    align-items: baseline;
    gap: 10px;
    text-align: center;
}

.convert-from .value, .convert-to .value {
    font-size: 1.8rem;
    font-weight: 700;
    color: #333;
}

.convert-to .value.highlight {
    font-size: 2.2rem;
    color: #ff9a9e;
}

.convert-from .unit, .convert-to .unit {
    font-size: 1rem;
    color: #666;
    font-weight: 600;
}

.convert-arrow {
    font-size: 1.5rem;
    color: #ff9a9e;
}

.quick-convert-section {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.quick-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.quick-grid {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.quick-btn {
    padding: 12px 20px;
    background: #f5f5f5;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.quick-btn:hover {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    color: #fff;
}

.calculator-guide {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.guide-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.guide-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.guide-item {
    text-align: center;
}

.guide-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 1.3rem;
    color: #fff;
}

.guide-item h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.guide-item p {
    font-size: 0.85rem;
    color: #666;
    line-height: 1.5;
}

.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: #333;
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

@media (max-width: 768px) {
    .calculator-title {
        font-size: 1.8rem;
    }

    .converter-main {
        grid-template-columns: 1fr;
    }

    .select-row {
        flex-direction: column;
        gap: 15px;
    }

    .select-group {
        width: 100%;
    }
}