:root {
    --primary-color: #0e7e94;
    --secondary-color: #0a6475;
    --accent-color: #14b8c4;
    --h1-color: #0b1120;
    --h2-color: #111827;
    --h3-color: #1f2937;
    --h4-color: #374151;
    --paragraph-color: #4b5563;
    --bg-color: #ffffff;
    --border-color: #e5e7eb;
    --default-border: #dbe4ea;
    --soft-border: #e8f2f4;
    --hover-border: #0e7e94;
    --focus-border: #0a6475;
    --btn-primary-bg: #0e7e94;
    --btn-primary-hover: #0a6475;
    --btn-primary-text: #ffffff;
    --btn-secondary-bg: #e8f2f4;
    --btn-secondary-hover: #0e7e94;
    --btn-secondary-text: #0e7e94;
    --btn-secondary-hover-text: #ffffff;
    --font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.investment-calculator-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: var(--font-family);
}

.investment-calculator-card {
    background: var(--bg-color);
    border: 1px solid var(--default-border);
    border-radius: 10px;
    padding: 32px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.1);
    transition: box-shadow 0.3s ease;
}

.investment-calculator-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.investment-calculator-header {
    margin-bottom: 28px;
    text-align: center;
}

.investment-calculator-title {
    color: var(--h2-color);
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 12px;
    letter-spacing: -0.5px;
}

.investment-calculator-description {
    color: var(--paragraph-color);
    font-size: 16px;
    line-height: 1.5;
}

/* Input grid */
.investment-calculator-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.investment-calculator-input-group {
    display: flex;
    flex-direction: column;
}

.investment-calculator-label {
    color: var(--h3-color);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
}

.investment-calculator-input {
    padding: 10px 12px;
    font-size: 15px;
    font-family: var(--font-family);
    color: var(--h4-color);
    background: var(--bg-color);
    border: 1px solid var(--default-border);
    border-radius: 8px;
    transition: all 0.3s ease;
    width: 100%;
}

.investment-calculator-input:focus {
    outline: none;
    border-color: var(--focus-border);
    box-shadow: 0 0 0 3px rgba(10,100,117,0.1);
}

.investment-calculator-input:hover {
    border-color: var(--hover-border);
}

.investment-calculator-input[type="number"] {
    -moz-appearance: textfield;
}

.investment-calculator-input[type="number"]::-webkit-outer-spin-button,
.investment-calculator-input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

/* Buttons */
.investment-calculator-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.investment-calculator-btn {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-family);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.investment-calculator-btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
}

.investment-calculator-btn-primary:hover {
    background: var(--btn-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(14,126,148,0.3);
}

.investment-calculator-btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
}

.investment-calculator-btn-secondary:hover {
    background: var(--btn-secondary-hover);
    color: var(--btn-secondary-hover-text);
    transform: translateY(-1px);
}

/* Results */
.investment-calculator-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.investment-calculator-result {
    background: var(--soft-border);
    padding: 16px;
    border-radius: 8px;
    text-align: center;
}

.investment-calculator-result-label {
    display: block;
    color: var(--paragraph-color);
    font-size: 13px;
    margin-bottom: 6px;
    font-weight: 500;
}

.investment-calculator-result-value {
    display: inline-block;
    color: var(--primary-color);
    font-size: 24px;
    font-weight: 700;
}

.investment-calculator-result-value.positive {
    color: #10b981;
}

.investment-calculator-result-value.negative {
    color: #ef4444;
}

/* Chart */
.investment-calculator-chart-container {
    margin: 32px 0 24px;
    padding: 16px;
    background: var(--bg-color);
    border-radius: 10px;
    border: 1px solid var(--default-border);
}

.investment-calculator-chart-container canvas {
    width: 100% !important;
    height: auto !important;
    max-height: 350px;
}

/* Examples */
.investment-calculator-examples {
    padding-top: 24px;
    border-top: 1px solid var(--soft-border);
    margin-bottom: 20px;
}

.investment-calculator-examples-title {
    color: var(--h3-color);
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 16px;
}

.investment-calculator-examples-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.investment-calculator-example-btn {
    padding: 8px 16px;
    font-size: 13px;
    font-family: var(--font-family);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--default-border);
    background: var(--soft-border);
    color: var(--primary-color);
}

.investment-calculator-example-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Tips */
.investment-calculator-tips {
    background: var(--soft-border);
    padding: 12px 16px;
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
}

.investment-calculator-tip {
    color: var(--h4-color);
    font-size: 13px;
    line-height: 1.5;
}

.investment-calculator-tip strong {
    color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .investment-calculator-card { padding: 24px; }
    .investment-calculator-title { font-size: 24px; }
    .investment-calculator-inputs { grid-template-columns: 1fr 1fr; }
    .investment-calculator-results { grid-template-columns: 1fr 1fr; gap: 12px; }
    .investment-calculator-result-value { font-size: 20px; }
    .investment-calculator-actions { flex-direction: column; }
    .investment-calculator-btn { width: 100%; }
    .investment-calculator-examples-list { flex-direction: column; }
    .investment-calculator-example-btn { width: 100%; text-align: center; }
    .investment-calculator-chart-container { padding: 12px; }
}

@media (max-width: 480px) {
    .investment-calculator-card { padding: 20px; }
    .investment-calculator-results { grid-template-columns: 1fr; }
    .investment-calculator-inputs { grid-template-columns: 1fr; }
}

@keyframes fadeIn {
    from { opacity:0; transform:translateY(10px); }
    to { opacity:1; transform:translateY(0); }
}
.investment-calculator-container {
    animation: fadeIn 0.5s ease-in;
}