/* Стили для утилит */
.utility-tabs {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 1rem 2rem;
    border: none;
    background: var(--lighter);
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark);
    box-shadow: var(--shadow);
}

[data-theme="dark"] .tab-btn {
    background: var(--dark);
    color: white;
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.tab-btn:hover:not(.active) {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.utilities-container {
    background: var(--lighter);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    min-height: 500px;
    transition: var(--transition);
}

/* Стили для калькулятора */
.calculator {
    max-width: 400px;
    margin: 0 auto;
}

.calc-display {
    background: var(--light);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: right;
    overflow: hidden;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.1);
}

.calc-expression {
    font-size: 1rem;
    color: var(--gray);
    min-height: 1.5rem;
    margin-bottom: 0.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
}

.calc-result {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    overflow: hidden;
    text-overflow: ellipsis;
    min-height: 3rem;
}

[data-theme="dark"] .calc-result {
    color: white;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.calc-btn {
    height: 70px;
    border: none;
    background: var(--lighter);
    border-radius: 12px;
    font-size: 1.4rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--dark);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .calc-btn {
    background: var(--dark);
    color: white;
}

.calc-btn:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.calc-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.calc-btn.operator {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}

.calc-btn.operator:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.calc-btn.clear {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.calc-btn.clear:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
}

.calc-btn.equals {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: white;
    grid-column: span 2;
}

.calc-btn.equals:hover {
    background: linear-gradient(135deg, var(--secondary-dark), var(--secondary));
}

.calc-btn.zero {
    grid-column: span 2;
}

/* Специальные стили для кнопки backspace */
.calc-btn[data-action="backspace"] {
    font-size: 1.2rem;
}

/* Убедимся, что все кнопки одинакового размера */
.calc-btn i {
    font-size: 1.2rem;
}

/* Улучшенная сетка для мобильных устройств */
@media (max-width: 480px) {
    .calc-grid {
        gap: 0.6rem;
    }
    
    .calc-btn {
        height: 60px;
        font-size: 1.2rem;
    }
    
    .calc-btn[data-action="backspace"] {
        font-size: 1rem;
    }
}

/* Стили для конвертера */
.converter {
    max-width: 600px;
    margin: 0 auto;
}

.converter-row {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1.5rem;
}

.converter-input {
    flex: 1;
    padding: 1rem;
    border: 2px solid var(--gray-light);
    border-radius: 12px;
    font-size: 1.5rem;
    font-weight: 600;
    background: var(--light);
    color: var(--dark);
    transition: var(--transition);
    text-align: center;
}

[data-theme="dark"] .converter-input {
    background: var(--dark);
    color: white;
    border-color: var(--gray);
}

.converter-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.converter-select {
    flex: 1;
    padding: 1rem;
    border: 2px solid var(--gray-light);
    border-radius: 12px;
    font-size: 1rem;
    background: var(--light);
    color: var(--dark);
    cursor: pointer;
    transition: var(--transition);
}

[data-theme="dark"] .converter-select {
    background: var(--dark);
    color: white;
    border-color: var(--gray);
}

.converter-select:focus {
    outline: none;
    border-color: var(--primary);
}

.converter-flag {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 0.5rem;
}

.swap-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.swap-btn:hover {
    background: var(--primary-dark);
    transform: rotate(180deg);
}

.converter-info {
    text-align: center;
    color: var(--gray);
    margin-top: 2rem;
    padding: 1rem;
    background: var(--light);
    border-radius: 12px;
}

[data-theme="dark"] .converter-info {
    background: var(--dark);
}

/* Стили для шифратора */
.encoder {
    max-width: 800px;
    margin: 0 auto;
}

.encoder-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.encoder-textarea {
    flex: 1;
    min-height: 150px;
    padding: 1.2rem;
    border: 2px solid var(--gray-light);
    border-radius: 12px;
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    background: var(--light);
    color: var(--dark);
    resize: vertical;
    transition: var(--transition);
}

[data-theme="dark"] .encoder-textarea {
    background: var(--dark);
    color: white;
    border-color: var(--gray);
}

.encoder-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.encoder-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin: 2rem 0;
}

.encoder-btn {
    padding: 1rem 1.5rem;
    background: var(--light);
    border: 2px solid var(--gray-light);
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

[data-theme="dark"] .encoder-btn {
    background: var(--dark);
    color: white;
    border-color: var(--gray);
}

.encoder-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.encoder-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.encoder-info {
    margin-top: 2rem;
    padding: 1rem;
    background: var(--light);
    border-radius: 12px;
    font-size: 0.9rem;
    color: var(--gray);
}

[data-theme="dark"] .encoder-info {
    background: var(--dark);
}

/* Стили для палитры цветов */
.color-picker {
    max-width: 600px;
    margin: 0 auto;
}

.color-display {
    height: 200px;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.color-values {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.color-value-group {
    flex: 1;
    background: var(--light);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
}

[data-theme="dark"] .color-value-group {
    background: var(--dark);
}

.color-value-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--gray);
}

.color-value-input {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    background: none;
    border: none;
    text-align: center;
    width: 100%;
}

[data-theme="dark"] .color-value-input {
    color: white;
}

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

.color-sliders {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.color-slider {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.slider-label {
    min-width: 80px;
    font-weight: 600;
    color: var(--dark);
}

[data-theme="dark"] .slider-label {
    color: white;
}

.slider-value {
    min-width: 40px;
    text-align: center;
    font-weight: 700;
    color: var(--primary);
}

.slider-input {
    flex: 1;
    height: 8px;
    -webkit-appearance: none;
    background: var(--gray-light);
    border-radius: 4px;
    outline: none;
}

.slider-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.color-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.color-action-btn {
    padding: 1rem 1.5rem;
    background: var(--light);
    border: 2px solid var(--gray-light);
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

[data-theme="dark"] .color-action-btn {
    background: var(--dark);
    color: white;
    border-color: var(--gray);
}

.color-action-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* Стили для QR генератора */
.qr-generator {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.qr-input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--gray-light);
    border-radius: 12px;
    font-size: 1rem;
    background: var(--light);
    color: var(--dark);
    margin-bottom: 2rem;
    transition: var(--transition);
}

[data-theme="dark"] .qr-input {
    background: var(--dark);
    color: white;
    border-color: var(--gray);
}

.qr-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.qr-display {
    width: 250px;
    height: 250px;
    margin: 0 auto 2rem;
    background: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
}

.qr-placeholder {
    color: var(--gray);
    font-size: 0.9rem;
}

.qr-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.qr-btn {
    padding: 1rem 1.5rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.qr-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.qr-btn.secondary {
    background: var(--light);
    color: var(--dark);
    border: 2px solid var(--gray-light);
}

[data-theme="dark"] .qr-btn.secondary {
    background: var(--dark);
    color: white;
}

.qr-btn.secondary:hover {
    background: var(--gray-light);
    color: var(--dark);
}

[data-theme="dark"] .qr-btn.secondary:hover {
    background: var(--gray);
    color: white;
}

.qr-options {
    margin-top: 2rem;
    background: var(--light);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: left;
}

[data-theme="dark"] .qr-options {
    background: var(--dark);
}

.qr-options h4 {
    margin-bottom: 1rem;
    color: var(--dark);
}

[data-theme="dark"] .qr-options h4 {
    color: white;
}

.option-group {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1rem;
}

.option-group label {
    min-width: 100px;
    font-weight: 500;
    color: var(--gray);
}

.option-input {
    flex: 1;
    padding: 0.5rem;
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    background: var(--lighter);
    color: var(--dark);
}

[data-theme="dark"] .option-input {
    background: var(--light);
    color: white;
    border-color: var(--gray);
}