/* =========================================
   COMPOUND INTEREST CALCULATOR CSS
   ========================================= */

:root {
    --ci-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --ci-gradient-green: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --ci-gradient-blue: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --ci-gradient-gold: linear-gradient(135deg, #f7971e 0%, #ffd200 100%);
    --ci-gradient-pink: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --ci-bg-dark: #0f172a;
    --ci-bg-card: #1e293b;
    --ci-bg-input: #0f172a;
    --ci-border: #334155;
    --ci-border-light: #475569;
    --ci-white: #ffffff;
    --ci-gray: #cbd5e1;
    --ci-muted: #94a3b8;
    --ci-success: #22c55e;
    --ci-purple: #a855f7;
    --ci-cyan: #06b6d4;
    --ci-orange: #f97316;
}

.ci-calc-wrapper {
    background: linear-gradient(to bottom, var(--ci-bg-dark), var(--ci-bg-card));
    padding: 3rem 1.5rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--ci-white);
    line-height: 1.6;
    min-height: 100vh;
}

.ci-calc-wrapper * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.ci-calc-container {
    max-width: 1000px;
    margin: 0 auto;
}

/* Header */
.ci-calc-wrapper .calc-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.ci-calc-wrapper .calc-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--ci-white);
    margin-bottom: 1rem;
    background: var(--ci-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ci-calc-wrapper .calc-description {
    font-size: 1.1rem;
    color: var(--ci-gray);
    max-width: 700px;
    margin: 0 auto;
}

/* Card */
.ci-calc-wrapper .calc-card {
    background: var(--ci-bg-card);
    border: 1px solid var(--ci-border);
    border-radius: 1.5rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

/* Mode Tabs */
.ci-calc-wrapper .mode-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    background: var(--ci-bg-input);
    padding: 0.5rem;
    border-radius: 1rem;
}

.ci-calc-wrapper .mode-tab {
    flex: 1;
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    border-radius: 0.75rem;
    color: var(--ci-muted);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-direction: column;
    text-align: center;
}

.ci-calc-wrapper .mode-tab:hover {
    color: var(--ci-white);
    background: rgba(255,255,255,0.05);
}

.ci-calc-wrapper .mode-tab.active {
    background: var(--ci-gradient);
    color: var(--ci-white);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.3);
}

.ci-calc-wrapper .mode-tab i {
    font-size: 1.5rem;
}

/* Mode Content */
.ci-calc-wrapper .mode-content {
    display: none;
}

.ci-calc-wrapper .mode-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Section Title */
.ci-calc-wrapper .section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ci-white);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.ci-calc-wrapper .section-title i {
    color: var(--ci-purple);
}

/* Form */
.ci-calc-wrapper .form-section {
    margin-bottom: 2rem;
}

.ci-calc-wrapper .form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.ci-calc-wrapper .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.ci-calc-wrapper .form-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ci-gray);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ci-calc-wrapper .form-label i {
    color: var(--ci-purple);
}

.ci-calc-wrapper .form-select,
.ci-calc-wrapper .form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--ci-border-light);
    border-radius: 0.75rem;
    background: var(--ci-bg-input);
    color: var(--ci-white);
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.ci-calc-wrapper .form-select:focus,
.ci-calc-wrapper .form-input:focus {
    outline: none;
    border-color: var(--ci-purple);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
}

.ci-calc-wrapper .input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.ci-calc-wrapper .input-prefix,
.ci-calc-wrapper .input-suffix {
    position: absolute;
    font-weight: 600;
    color: var(--ci-muted);
    pointer-events: none;
}

.ci-calc-wrapper .input-prefix {
    left: 1.25rem;
}

.ci-calc-wrapper .input-suffix {
    right: 1.25rem;
}

.ci-calc-wrapper .input-wrapper .form-input {
    padding-left: 2.5rem;
}

/* Range Slider */
.ci-calc-wrapper .form-range {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--ci-border);
    outline: none;
    -webkit-appearance: none;
}

.ci-calc-wrapper .form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--ci-gradient);
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
}

.ci-calc-wrapper .form-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.ci-calc-wrapper .form-range::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 50%;
    background: var(--ci-gradient);
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.ci-calc-wrapper .range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--ci-muted);
    margin-top: 0.5rem;
}

/* Contributions Section */
.ci-calc-wrapper .contributions-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--ci-border);
}

.ci-calc-wrapper .section-toggle {
    margin-bottom: 1.5rem;
}

.ci-calc-wrapper .toggle-label {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    background: var(--ci-bg-input);
    border: 1px solid var(--ci-border);
    border-radius: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ci-calc-wrapper .toggle-label:hover {
    border-color: var(--ci-purple);
}

.ci-calc-wrapper .toggle-contributions {
    width: 20px;
    height: 20px;
    accent-color: var(--ci-purple);
    cursor: pointer;
}

.ci-calc-wrapper .toggle-label span {
    font-weight: 500;
    color: var(--ci-gray);
}

.ci-calc-wrapper .toggle-label span i {
    color: var(--ci-success);
}

.ci-calc-wrapper .contributions-fields {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 200px;
    }
}

/* Buttons */
.ci-calc-wrapper .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1.25rem 2.5rem;
    border: none;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ci-calc-wrapper .btn-primary {
    background: var(--ci-gradient);
    color: var(--ci-white);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.ci-calc-wrapper .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
}

.ci-calc-wrapper .btn-secondary {
    background: var(--ci-border);
    color: var(--ci-white);
}

.ci-calc-wrapper .btn-secondary:hover {
    background: var(--ci-border-light);
}

.ci-calc-wrapper .controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.ci-calc-wrapper .controls .btn {
    flex: 1;
    min-width: 180px;
}

/* Result Section */
.ci-calc-wrapper .result-section {
    display: none;
    padding-top: 2rem;
    border-top: 2px solid var(--ci-border);
}

.ci-calc-wrapper .result-section.show {
    display: block;
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Main Result */
.ci-calc-wrapper .main-result {
    margin-bottom: 2.5rem;
}

.ci-calc-wrapper .result-card {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 3rem;
    background: var(--ci-gradient-green);
    border-radius: 1.5rem;
    box-shadow: 0 20px 50px rgba(16, 185, 129, 0.3);
}

.ci-calc-wrapper .result-icon {
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--ci-white);
}

.ci-calc-wrapper .result-info {
    flex: 1;
}

.ci-calc-wrapper .result-label {
    font-size: 1rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ci-calc-wrapper .result-value {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--ci-white);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.ci-calc-wrapper .result-subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
}

/* Summary Grid */
.ci-calc-wrapper .summary-section {
    margin-bottom: 2.5rem;
}

.ci-calc-wrapper .summary-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.ci-calc-wrapper .summary-box {
    background: var(--ci-bg-input);
    border: 1px solid var(--ci-border);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.ci-calc-wrapper .summary-box:hover {
    border-color: var(--ci-purple);
    transform: translateY(-3px);
}

.ci-calc-wrapper .summary-icon {
    width: 50px;
    height: 50px;
    min-width: 50px;
    background: var(--ci-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--ci-white);
}

.ci-calc-wrapper .summary-label {
    font-size: 0.85rem;
    color: var(--ci-muted);
    margin-bottom: 0.25rem;
}

.ci-calc-wrapper .summary-value {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--ci-white);
}

/* Breakdown Visual */
.ci-calc-wrapper .breakdown-visual {
    margin-bottom: 2.5rem;
}

.ci-calc-wrapper .breakdown-chart {
    background: var(--ci-bg-input);
    border: 1px solid var(--ci-border);
    border-radius: 1rem;
    padding: 2rem;
}

.ci-calc-wrapper .chart-bars {
    display: flex;
    gap: 3rem;
    justify-content: center;
    align-items: flex-end;
}

.ci-calc-wrapper .chart-bar {
    flex: 1;
    max-width: 200px;
    text-align: center;
}

.ci-calc-wrapper .bar-fill {
    width: 100%;
    max-height: 300px;
    background: var(--ci-gradient);
    border-radius: 0.5rem 0.5rem 0 0;
    transition: height 0.6s ease;
    position: relative;
}

.ci-calc-wrapper .interest-bar .bar-fill {
    background: var(--ci-gradient-gold);
}

.ci-calc-wrapper .bar-label {
    font-size: 0.9rem;
    color: var(--ci-muted);
    margin-top: 0.75rem;
}

.ci-calc-wrapper .bar-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ci-white);
    margin-top: 0.5rem;
}

/* Yearly Breakdown Table */
.ci-calc-wrapper .yearly-breakdown {
    margin-bottom: 2.5rem;
}

.ci-calc-wrapper .table-wrapper {
    background: var(--ci-bg-input);
    border: 1px solid var(--ci-border);
    border-radius: 1rem;
    overflow: hidden;
    max-height: 400px;
    overflow-y: auto;
}

.ci-calc-wrapper .breakdown-table {
    width: 100%;
    border-collapse: collapse;
}

.ci-calc-wrapper .breakdown-table thead {
    background: var(--ci-gradient);
    position: sticky;
    top: 0;
    z-index: 1;
}

.ci-calc-wrapper .breakdown-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--ci-white);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ci-calc-wrapper .breakdown-table tbody tr {
    border-bottom: 1px solid var(--ci-border);
    transition: all 0.3s ease;
}

.ci-calc-wrapper .breakdown-table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

.ci-calc-wrapper .breakdown-table td {
    padding: 1rem;
    color: var(--ci-gray);
    font-size: 0.95rem;
}

.ci-calc-wrapper .breakdown-table td:first-child {
    font-weight: 600;
    color: var(--ci-white);
}

/* Comparison Section */
.ci-calc-wrapper .comparison-section {
    margin-bottom: 2.5rem;
}

.ci-calc-wrapper .comparison-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.ci-calc-wrapper .comparison-box {
    flex: 1;
    max-width: 300px;
    background: var(--ci-bg-input);
    border: 2px solid var(--ci-border);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
}

.ci-calc-wrapper .comparison-box.compound {
    border-color: var(--ci-success);
    box-shadow: 0 0 30px rgba(34, 197, 94, 0.2);
}

.ci-calc-wrapper .comparison-header {
    font-size: 0.9rem;
    color: var(--ci-muted);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ci-calc-wrapper .comparison-amount {
    font-size: 2rem;
    font-weight: 800;
    color: var(--ci-white);
    margin-bottom: 0.75rem;
}

.ci-calc-wrapper .comparison-interest {
    font-size: 0.9rem;
    color: var(--ci-gray);
}

.ci-calc-wrapper .comparison-vs {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.ci-calc-wrapper .vs-badge {
    width: 60px;
    height: 60px;
    background: var(--ci-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--ci-white);
}

.ci-calc-wrapper .advantage {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ci-success);
    padding: 0.5rem 1rem;
    background: rgba(34, 197, 94, 0.1);
    border-radius: 2rem;
}

/* Insights */
.ci-calc-wrapper .insights-section {
    margin-bottom: 2rem;
}

.ci-calc-wrapper .insights-container {
    display: grid;
    gap: 1rem;
}

.ci-calc-wrapper .insight-item {
    display: flex;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--ci-bg-input);
    border: 1px solid var(--ci-border);
    border-radius: 0.75rem;
    border-left: 4px solid var(--ci-purple);
}

.ci-calc-wrapper .insight-item i {
    color: var(--ci-purple);
    font-size: 1.25rem;
    margin-top: 0.125rem;
}

.ci-calc-wrapper .insight-item p {
    color: var(--ci-gray);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.ci-calc-wrapper .insight-item strong {
    color: var(--ci-white);
}

/* Info Cards */
.ci-calc-wrapper .info-card {
    background: var(--ci-bg-card);
    border: 1px solid var(--ci-border);
    border-radius: 1.5rem;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.ci-calc-wrapper .info-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ci-white);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.ci-calc-wrapper .info-title i {
    color: var(--ci-purple);
}

.ci-calc-wrapper .info-card p {
    color: var(--ci-gray);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* Formula Box */
.ci-calc-wrapper .formula-box {
    background: var(--ci-bg-input);
    border: 1px solid var(--ci-border);
    border-radius: 1rem;
    padding: 2rem;
    margin: 1.5rem 0;
}

.ci-calc-wrapper .formula-main {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--ci-purple);
    font-family: 'Georgia', serif;
    margin-bottom: 1.5rem;
}

.ci-calc-wrapper .formula-explanation {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.ci-calc-wrapper .formula-item {
    padding: 0.75rem 1rem;
    background: var(--ci-bg-card);
    border-radius: 0.5rem;
    font-size: 0.9rem;
    color: var(--ci-gray);
}

.ci-calc-wrapper .formula-item strong {
    color: var(--ci-white);
    font-size: 1.1rem;
}

/* Example Box */
.ci-calc-wrapper .example-box {
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-top: 1.5rem;
}

.ci-calc-wrapper .example-box h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--ci-white);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ci-calc-wrapper .example-box h4 i {
    color: #667eea;
}

.ci-calc-wrapper .example-calculation {
    font-family: 'Courier New', monospace;
    color: var(--ci-purple);
    font-size: 1rem;
    margin-top: 0.75rem;
}

/* Frequency Grid */
.ci-calc-wrapper .frequency-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.ci-calc-wrapper .frequency-item {
    background: var(--ci-bg-input);
    border: 1px solid var(--ci-border);
    border-radius: 1rem;
    padding: 1.5rem;
}

.ci-calc-wrapper .frequency-icon {
    width: 56px;
    height: 56px;
    background: var(--ci-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--ci-white);
    margin-bottom: 1rem;
}

.ci-calc-wrapper .frequency-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--ci-white);
    margin-bottom: 0.5rem;
}

.ci-calc-wrapper .frequency-item p {
    font-size: 0.9rem;
    color: var(--ci-gray);
    margin-bottom: 0.75rem;
}

.ci-calc-wrapper .frequency-badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: var(--ci-gradient);
    color: var(--ci-white);
    border-radius: 2rem;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Power Points */
.ci-calc-wrapper .power-points {
    display: grid;
    gap: 1.5rem;
}

.ci-calc-wrapper .power-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--ci-bg-input);
    border: 1px solid var(--ci-border);
    border-radius: 1rem;
}

.ci-calc-wrapper .power-number {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--ci-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--ci-white);
}

.ci-calc-wrapper .power-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--ci-white);
    margin-bottom: 0.5rem;
}

.ci-calc-wrapper .power-content p {
    font-size: 0.95rem;
    color: var(--ci-gray);
    margin: 0;
    line-height: 1.6;
}

/* Tips Grid */
.ci-calc-wrapper .tips-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.ci-calc-wrapper .tip-box {
    background: var(--ci-bg-input);
    border: 1px solid var(--ci-border);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
}

.ci-calc-wrapper .tip-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    background: var(--ci-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--ci-white);
}

.ci-calc-wrapper .tip-box h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ci-white);
    margin-bottom: 0.5rem;
}

.ci-calc-wrapper .tip-box p {
    font-size: 0.875rem;
    color: var(--ci-gray);
    margin: 0;
    line-height: 1.6;
}

/* FAQ */
.ci-calc-wrapper .faq-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.ci-calc-wrapper .faq-item {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--ci-border);
}

.ci-calc-wrapper .faq-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.ci-calc-wrapper .faq-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--ci-white);
    margin-bottom: 0.75rem;
}

.ci-calc-wrapper .faq-item p {
    color: var(--ci-gray);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 0;
}

/* Responsive */
@media (max-width: 1024px) {
    .ci-calc-wrapper .summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ci-calc-wrapper .tips-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .ci-calc-wrapper {
        padding: 2rem 1rem;
    }
    
    .ci-calc-wrapper .calc-title {
        font-size: 2rem;
    }
    
    .ci-calc-wrapper .calc-card {
        padding: 1.5rem;
    }
    
    .ci-calc-wrapper .mode-tabs {
        flex-direction: column;
    }
    
    .ci-calc-wrapper .form-grid {
        grid-template-columns: 1fr;
    }
    
    .ci-calc-wrapper .controls {
        flex-direction: column;
    }
    
    .ci-calc-wrapper .controls .btn {
        width: 100%;
    }
    
    .ci-calc-wrapper .result-card {
        flex-direction: column;
        text-align: center;
        padding: 2rem;
    }
    
    .ci-calc-wrapper .result-value {
        font-size: 2.5rem;
    }
    
    .ci-calc-wrapper .summary-grid {
        grid-template-columns: 1fr;
    }
    
    .ci-calc-wrapper .comparison-grid {
        flex-direction: column;
    }
    
    .ci-calc-wrapper .comparison-box {
        max-width: 100%;
        width: 100%;
    }
    
    .ci-calc-wrapper .formula-explanation {
        grid-template-columns: 1fr;
    }
    
    .ci-calc-wrapper .frequency-grid,
    .ci-calc-wrapper .tips-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .ci-calc-wrapper .calc-title {
        font-size: 1.75rem;
    }
    
    .ci-calc-wrapper .result-value {
        font-size: 2rem;
    }
    
    .ci-calc-wrapper .formula-main {
        font-size: 1.5rem;
    }
}