/* ===== Unit Converter App Styles ===== */
.unit-converter-app {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 320px;
}

.converter-category-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.converter-category-section label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.converter-select {
    padding: 0.75rem 1rem;
    background: #1a1a2e;
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 10px;
    color: #e2e8f0;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.converter-select option {
    background: #1a1a2e;
    color: #e2e8f0;
}

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

.converter-main {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1rem;
    align-items: end;
}

.converter-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.converter-input-group label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.converter-input-wrapper {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.converter-input {
    padding: 0.75rem 1rem;
    background: var(--bg-card);
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: 'Consolas', monospace;
    transition: var(--transition);
}

.converter-input:focus {
    border-color: var(--primary-violet);
    outline: none;
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.converter-input:read-only {
    background: rgba(139, 92, 246, 0.1);
}

.converter-unit-select {
    padding: 0.625rem 0.75rem;
    background: #1a1a2e;
    border: 2px solid rgba(139, 92, 246, 0.3);
    border-radius: 10px;
    color: #e2e8f0;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.converter-unit-select option {
    background: #1a1a2e;
    color: #e2e8f0;
}

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

.converter-swap-btn {
    width: 48px;
    height: 48px;
    background: var(--gradient-main);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.converter-swap-btn:hover {
    transform: rotate(180deg) scale(1.1);
    box-shadow: var(--shadow-violet);
}

.converter-result-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(139, 92, 246, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.converter-formula {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    font-family: 'Consolas', monospace;
    word-break: break-all;
}

.converter-copy-btn {
    padding: 0.75rem 1.5rem;
    background: var(--gradient-main);
    border: none;
    border-radius: 30px;
    color: white;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    align-self: center;
}

.converter-copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-violet);
}

.converter-quick-conversions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.converter-quick-conversions > label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.quick-conversion-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.quick-conversion-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 0.875rem;
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid rgba(139, 92, 246, 0.2);
    font-size: 0.85rem;
}

.quick-from {
    color: var(--primary-violet);
    font-weight: 500;
}

.quick-equals {
    color: var(--text-secondary);
}

.quick-to {
    color: var(--text-primary);
    font-family: 'Consolas', monospace;
}

/* Mobile Responsive */
@media (max-width: 600px) {
    .converter-main {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .converter-swap-btn {
        width: 100%;
        height: 40px;
        border-radius: 20px;
        margin: 0;
    }

    .converter-swap-btn:hover {
        transform: scale(1.02);
    }

    .quick-conversion-list {
        grid-template-columns: 1fr;
    }

    .converter-formula {
        font-size: 0.95rem;
    }
}

/* Number input styling */
.converter-input::-webkit-outer-spin-button,
.converter-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.converter-input[type=number] {
    -moz-appearance: textfield;
    appearance: textfield;
}

/* ===== Unit Converter About Section ===== */
.uc-about-container {
    background: rgba(15, 15, 26, 0.6);
    border: 1px solid rgba(139, 92, 246, 0.15);
    border-radius: 16px;
    padding: 1.5rem;
    margin-top: 8rem;
    padding-top: 1rem;
    border-top: 2px solid rgba(139, 92, 246, 0.2);
}

.uc-info-section h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.uc-info-section p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.uc-info-section h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.uc-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.uc-info-card {
    background: var(--bg-card);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 12px;
    padding: 1.25rem;
    transition: var(--transition);
}

.uc-info-card:hover {
    border-color: var(--primary-violet);
    transform: translateY(-2px);
}

.uc-info-card h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0;
    color: var(--primary-violet);
    font-size: 1rem;
}

.uc-info-card p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

.uc-steps {
    list-style: decimal;
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

.uc-steps li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.uc-features {
    background: rgba(139, 92, 246, 0.1);
    border-radius: 12px;
    padding: 1.25rem;
    margin: 1.5rem 0;
}

.uc-features h4 {
    margin-top: 0;
}

.uc-features ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.5rem;
    list-style: none;
    padding: 0;
}

.uc-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.uc-features li i {
    color: #22C55E;
    font-size: 0.85rem;
}

.uc-faq {
    margin-top: 1.5rem;
}

.uc-faq .faq-item {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(139, 92, 246, 0.1);
}

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

.uc-faq .faq-item strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.5rem;
}

.uc-faq .faq-item p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* ===== Light Theme ===== */
.unit-converter-app.light-theme {
    background: #ffffff;
    border-radius: 16px;
    padding: 1.5rem;
}

.unit-converter-app.light-theme .converter-category-section label {
    color: #666;
}

.unit-converter-app.light-theme .converter-select {
    background: #f8f9fa;
    border-color: #e0e0e0;
    color: #1a1a2e;
}

.unit-converter-app.light-theme .converter-select option {
    background: #f8f9fa;
    color: #1a1a2e;
}

.unit-converter-app.light-theme .converter-input-group label {
    color: #666;
}

.unit-converter-app.light-theme .converter-input {
    background: #f8f9fa;
    border-color: #e0e0e0;
    color: #1a1a2e;
}

.unit-converter-app.light-theme .converter-unit-select {
    background: #f0f0f0;
    color: #1a1a2e;
}

.unit-converter-app.light-theme .converter-swap-btn {
    background: #f0f0f0;
    border-color: #e0e0e0;
    color: var(--primary-violet);
}

.unit-converter-app.light-theme .converter-swap-btn:hover {
    background: var(--primary-violet);
    color: white;
}

.unit-converter-app.light-theme .converter-result-section {
    background: #f8f9fa;
    border-color: #e0e0e0;
}

.unit-converter-app.light-theme .converter-formula {
    color: #1a1a2e;
}

.unit-converter-app.light-theme .converter-quick-conversions label {
    color: #666;
}

.unit-converter-app.light-theme .quick-conversion-item {
    background: #f8f9fa;
    border-color: #e0e0e0;
    color: #666;
}

.unit-converter-app.light-theme .quick-conversion-item .conversion-value {
    color: #1a1a2e;
}

.uc-about-container.light-theme {
    background: #ffffff;
    border-color: #e0e0e0;
}

.uc-about-container.light-theme h3 {
    color: #1a1a2e;
}

.uc-about-container.light-theme p,
.uc-about-container.light-theme li {
    color: #666;
}

.uc-about-container.light-theme .uc-faq .faq-item strong {
    color: #1a1a2e;
}

/* ===== LANDSCAPE RESPONSIVE DESIGN ===== */

/* Large Tablets and Small Laptops in Landscape (1024px - 1200px) */
@media screen and (orientation: landscape) and (max-width: 1200px) {
    .unit-converter-app {
        gap: 0.875rem;
        min-height: 300px;
    }
    
    .uc-about-container {
        margin-top: 6rem;
        padding: 1.25rem;
    }
    
    .uc-info-section h3 {
        font-size: 1.3rem;
    }
    
    .uc-info-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

/* Tablets in Landscape (768px - 1024px) */
@media screen and (orientation: landscape) and (max-width: 1024px) and (min-width: 768px) {
    .unit-converter-app {
        gap: 0.75rem;
        min-height: 280px;
    }
    
    .converter-category-section {
        gap: 0.4rem;
    }
    
    .converter-category-section label {
        font-size: 0.75rem;
    }
    
    .converter-select {
        padding: 0.6rem 0.8rem;
        font-size: 0.9rem;
        border-radius: 8px;
    }
    
    .converter-main {
        gap: 0.75rem;
    }
    
    .converter-input-group {
        gap: 0.4rem;
    }
    
    .converter-input-group label {
        font-size: 0.75rem;
    }
    
    .converter-input-wrapper {
        gap: 0.4rem;
    }
    
    .converter-input {
        padding: 0.6rem 0.8rem;
        font-size: 0.9rem;
        border-radius: 8px;
    }
    
    .converter-unit-select {
        padding: 0.5rem 0.6rem;
        font-size: 0.8rem;
        border-radius: 8px;
    }
    
    .converter-swap-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .converter-result-section {
        padding: 0.8rem;
        border-radius: 10px;
        gap: 0.6rem;
    }
    
    .converter-formula {
        font-size: 1rem;
    }
    
    .converter-copy-btn {
        padding: 0.6rem 1.25rem;
        font-size: 0.85rem;
    }
    
    .converter-quick-conversions {
        gap: 0.5rem;
    }
    
    .converter-quick-conversions > label {
        font-size: 0.75rem;
    }
    
    .quick-conversion-list {
        gap: 0.4rem;
    }
    
    .quick-conversion-item {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
        border-radius: 6px;
    }
    
    /* About Section */
    .uc-about-container {
        margin-top: 4rem;
        padding: 1rem;
    }
    
    .uc-info-section h3 {
        font-size: 1.15rem;
    }
    
    .uc-info-section p {
        font-size: 0.85rem;
    }
    
    .uc-info-section h4 {
        font-size: 1rem;
        margin-top: 1rem;
    }
    
    .uc-info-grid {
        gap: 0.75rem;
    }
    
    .uc-info-card {
        padding: 1rem;
    }
    
    .uc-info-card h4 {
        font-size: 0.9rem;
    }
    
    .uc-info-card p {
        font-size: 0.8rem;
    }
    
    .uc-steps li {
        font-size: 0.85rem;
    }
    
    .uc-features {
        padding: 1rem;
    }
    
    .uc-features ul {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .uc-features li {
        font-size: 0.85rem;
    }
    
    .uc-faq .faq-item strong {
        font-size: 0.9rem;
    }
    
    .uc-faq .faq-item p {
        font-size: 0.8rem;
    }
}

/* Small Tablets / Large Phones in Landscape (600px - 768px) */
@media screen and (orientation: landscape) and (max-width: 768px) and (min-width: 480px) {
    .unit-converter-app {
        gap: 0.6rem;
        min-height: auto;
    }
    
    .converter-category-section {
        gap: 0.3rem;
    }
    
    .converter-category-section label {
        font-size: 0.65rem;
    }
    
    .converter-select {
        padding: 0.5rem 0.6rem;
        font-size: 0.8rem;
        border-radius: 6px;
    }
    
    .converter-main {
        gap: 0.5rem;
    }
    
    .converter-input-group {
        gap: 0.3rem;
    }
    
    .converter-input-group label {
        font-size: 0.65rem;
    }
    
    .converter-input-wrapper {
        gap: 0.3rem;
    }
    
    .converter-input {
        padding: 0.4rem 0.6rem;
        font-size: 0.75rem;
        border-radius: 6px;
    }
    
    .converter-unit-select {
        padding: 0.4rem 0.5rem;
        font-size: 0.7rem;
        border-radius: 6px;
    }
    
    .converter-swap-btn {
        width: 34px;
        height: 34px;
        font-size: 0.85rem;
    }
    
    .converter-result-section {
        padding: 0.6rem;
        border-radius: 8px;
        gap: 0.5rem;
    }
    
    .converter-formula {
        font-size: 0.85rem;
    }
    
    .converter-copy-btn {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
        gap: 0.3rem;
    }
    
    .converter-quick-conversions {
        gap: 0.4rem;
    }
    
    .converter-quick-conversions > label {
        font-size: 0.65rem;
    }
    
    .quick-conversion-list {
        gap: 0.35rem;
    }
    
    .quick-conversion-item {
        padding: 0.4rem 0.6rem;
        font-size: 0.7rem;
        border-radius: 5px;
    }
    
    /* About Section */
    .uc-about-container {
        margin-top: 2rem;
        padding: 0.875rem;
        border-radius: 12px;
    }
    
    .uc-info-section h3 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }
    
    .uc-info-section p {
        font-size: 0.75rem;
        margin-bottom: 0.75rem;
        line-height: 1.5;
    }
    
    .uc-info-section h4 {
        font-size: 0.85rem;
        margin-top: 0.75rem;
        margin-bottom: 0.5rem;
    }
    
    .uc-info-grid {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 0.5rem;
        margin: 0.75rem 0;
    }
    
    .uc-info-card {
        padding: 0.75rem;
        border-radius: 10px;
    }
    
    .uc-info-card h4 {
        font-size: 0.75rem;
        gap: 0.3rem;
    }
    
    .uc-info-card p {
        font-size: 0.65rem;
    }
    
    .uc-steps {
        padding-left: 1.25rem;
    }
    
    .uc-steps li {
        font-size: 0.7rem;
        margin-bottom: 0.3rem;
    }
    
    .uc-features {
        padding: 0.75rem;
        border-radius: 10px;
        margin: 0.75rem 0;
    }
    
    .uc-features h4 {
        font-size: 0.8rem;
    }
    
    .uc-features ul {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 0.3rem;
    }
    
    .uc-features li {
        font-size: 0.65rem;
        gap: 0.3rem;
    }
    
    .uc-features li i {
        font-size: 0.6rem;
    }
    
    .uc-faq {
        margin-top: 0.75rem;
    }
    
    .uc-faq .faq-item {
        margin-bottom: 0.75rem;
        padding-bottom: 0.75rem;
    }
    
    .uc-faq .faq-item strong {
        font-size: 0.75rem;
        margin-bottom: 0.3rem;
    }
    
    .uc-faq .faq-item p {
        font-size: 0.65rem;
    }
}

/* Mobile Phones in Landscape (height < 500px) */
@media screen and (orientation: landscape) and (max-height: 500px) {
    .unit-converter-app {
        gap: 0.5rem;
        min-height: auto;
    }
    
    .converter-category-section {
        gap: 0.2rem;
    }
    
    .converter-category-section label {
        font-size: 0.55rem;
    }
    
    .converter-select {
        padding: 0.35rem 0.5rem;
        font-size: 0.65rem;
        border-radius: 5px;
        border-width: 1.5px;
    }
    
    .converter-main {
        gap: 0.4rem;
    }
    
    .converter-input-group {
        gap: 0.2rem;
    }
    
    .converter-input-group label {
        font-size: 0.55rem;
    }
    
    .converter-input-wrapper {
        gap: 0.25rem;
    }
    
    .converter-input {
        padding: 0.3rem 0.5rem;
        font-size: 0.65rem;
        border-radius: 5px;
        border-width: 1.5px;
    }
    
    .converter-unit-select {
        padding: 0.3rem 0.4rem;
        font-size: 0.6rem;
        border-radius: 5px;
        border-width: 1.5px;
    }
    
    .converter-swap-btn {
        width: 28px;
        height: 28px;
        font-size: 0.7rem;
        margin-bottom: 0.25rem;
    }
    
    .converter-result-section {
        padding: 0.5rem;
        border-radius: 6px;
        gap: 0.4rem;
    }
    
    .converter-formula {
        font-size: 0.7rem;
    }
    
    .converter-copy-btn {
        padding: 0.4rem 0.75rem;
        font-size: 0.65rem;
        gap: 0.25rem;
        border-radius: 20px;
    }
    
    .converter-copy-btn i {
        font-size: 0.6rem;
    }
    
    .converter-quick-conversions {
        gap: 0.3rem;
    }
    
    .converter-quick-conversions > label {
        font-size: 0.55rem;
    }
    
    .quick-conversion-list {
        gap: 0.25rem;
    }
    
    .quick-conversion-item {
        padding: 0.3rem 0.5rem;
        font-size: 0.6rem;
        border-radius: 4px;
        gap: 0.3rem;
    }
    
    /* About Section */
    .uc-about-container {
        margin-top: 1.5rem;
        padding: 0.75rem;
        border-radius: 10px;
    }
    
    .uc-info-section h3 {
        font-size: 0.85rem;
        margin-bottom: 0.5rem;
    }
    
    .uc-info-section p {
        font-size: 0.65rem;
        margin-bottom: 0.5rem;
        line-height: 1.4;
    }
    
    .uc-info-section h4 {
        font-size: 0.75rem;
        margin-top: 0.5rem;
        margin-bottom: 0.35rem;
    }
    
    .uc-info-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 0.4rem;
        margin: 0.5rem 0;
    }
    
    .uc-info-card {
        padding: 0.5rem;
        border-radius: 8px;
    }
    
    .uc-info-card h4 {
        font-size: 0.65rem;
        gap: 0.25rem;
        margin-bottom: 0.25rem;
    }
    
    .uc-info-card h4 i {
        font-size: 0.6rem;
    }
    
    .uc-info-card p {
        font-size: 0.55rem;
        line-height: 1.3;
    }
    
    .uc-steps {
        padding-left: 1rem;
    }
    
    .uc-steps li {
        font-size: 0.6rem;
        margin-bottom: 0.2rem;
        line-height: 1.3;
    }
    
    .uc-features {
        padding: 0.5rem;
        border-radius: 8px;
        margin: 0.5rem 0;
    }
    
    .uc-features h4 {
        font-size: 0.7rem;
        margin-bottom: 0.3rem;
    }
    
    .uc-features ul {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 0.2rem;
    }
    
    .uc-features li {
        font-size: 0.55rem;
        gap: 0.2rem;
    }
    
    .uc-features li i {
        font-size: 0.5rem;
    }
    
    .uc-faq {
        margin-top: 0.5rem;
    }
    
    .uc-faq .faq-item {
        margin-bottom: 0.5rem;
        padding-bottom: 0.5rem;
    }
    
    .uc-faq .faq-item strong {
        font-size: 0.65rem;
        margin-bottom: 0.2rem;
    }
    
    .uc-faq .faq-item p {
        font-size: 0.55rem;
        line-height: 1.3;
    }
}

/* Very small mobile landscape (height < 400px) */
@media screen and (orientation: landscape) and (max-height: 400px) {
    .unit-converter-app {
        gap: 0.35rem;
    }
    
    .converter-category-section label {
        font-size: 0.5rem;
    }
    
    .converter-select {
        padding: 0.25rem 0.4rem;
        font-size: 0.55rem;
    }
    
    .converter-input-group label {
        font-size: 0.5rem;
    }
    
    .converter-input {
        padding: 0.25rem 0.4rem;
        font-size: 0.55rem;
    }
    
    .converter-unit-select {
        padding: 0.25rem 0.35rem;
        font-size: 0.5rem;
    }
    
    .converter-swap-btn {
        width: 24px;
        height: 24px;
        font-size: 0.6rem;
    }
    
    .converter-result-section {
        padding: 0.35rem;
    }
    
    .converter-formula {
        font-size: 0.6rem;
    }
    
    .converter-copy-btn {
        padding: 0.3rem 0.6rem;
        font-size: 0.55rem;
    }
    
    .quick-conversion-item {
        padding: 0.25rem 0.4rem;
        font-size: 0.5rem;
    }
    
    .uc-about-container {
        margin-top: 1rem;
        padding: 0.5rem;
    }
    
    .uc-info-section h3 {
        font-size: 0.7rem;
    }
    
    .uc-info-section p {
        font-size: 0.55rem;
    }
    
    .uc-info-grid {
        gap: 0.3rem;
    }
    
    .uc-info-card {
        padding: 0.4rem;
    }
    
    .uc-info-card h4 {
        font-size: 0.55rem;
    }
    
    .uc-info-card p {
        font-size: 0.45rem;
    }
}