:root {
    /* Palette from image */
    --dark: #181824;
    --primary-green: #38CE3C;
    --support-pink: #FF4D6B;
    --support-yellow: #FFDE73;
    --support-purple: #8E32E9;
    
    --bg-color: #f4f5f9;
    --card-bg: #ffffff;
    --text-dark: #2d2d3a;
    --text-light: #7b7b8a;
    --border-color: #e2e4ea;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-dark);
    padding-bottom: 40px;
}

/* Top Navigation */
header {
    background-color: var(--dark);
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    font-size: 1.2rem;
    font-weight: 600;
}

.date-picker-container input {
    background-color: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    outline: none;
    color-scheme: dark;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 0 15px;
}

/* Input Controls Section */
.controls-section {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    margin-bottom: 20px;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.input-row {
    display: flex;
    gap: 10px;
}

.input-row input {
    flex: 1;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.input-row input:focus {
    outline: none;
    border-color: var(--primary-green);
}

.btn {
    background-color: var(--dark);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-calc { background-color: var(--primary-green); color: white; }

.equation-display {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 5px;
    min-height: 18px;
}

/* Toggle Switch */
.toggle-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-color);
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    border: 1px solid var(--border-color);
}

.toggle-label {
    font-weight: 600;
    font-size: 0.95rem;
}

.toggle-desc {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 3px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.switch input { 
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--support-pink);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-green);
}

input:checked + .slider:before {
    transform: translateX(22px);
}

/* Results / Capture Area */
#capture-area {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    margin-bottom: 20px;
}

.report-header {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px dashed var(--border-color);
}

.report-date {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
}

.net-income-block {
    text-align: center;
    margin-bottom: 25px;
}

.net-income-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-light);
    font-weight: 600;
}

.net-income-amount {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--dark);
    margin: 5px 0;
}

.word-amount {
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
}

/* Input Expressions Section */
.input-expressions {
    margin-bottom: 25px;
    padding: 15px;
    background: var(--bg-color);
    border-radius: 8px;
    border-left: 4px solid var(--primary-green);
}

.expression-item {
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-dark);
}

.expression-label {
    font-weight: 600;
    color: var(--text-dark);
}

/* 2x2 Grid setup */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.partner-card {
    background: var(--bg-color);
    padding: 15px;
    border-radius: 8px;
    border-top: 4px solid #ccc;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Partner Theme Colors */
.card-is { border-top-color: var(--primary-green); }
.card-is .p-name { color: var(--primary-green); }

.card-kr { border-top-color: var(--support-pink); }
.card-kr .p-name { color: var(--support-pink); }

.card-rk { border-top-color: var(--support-yellow); }
.card-rk .p-name { color: #d6b333; /* slightly darker for readability on white */ }

.card-ac { border-top-color: var(--support-purple); }
.card-ac .p-name { color: var(--support-purple); }

.p-name {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.p-amount {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 5px;
}

/* Action Buttons */
.action-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.btn-download { background-color: var(--support-purple); }
.btn-copy { background-color: var(--dark); }

/* Modal Settings */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0; top: 0; width: 100%; height: 100%;
    background-color: rgba(24, 24, 36, 0.7);
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background-color: white;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    max-width: 350px;
    width: 100%;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.modal-content h3 { color: var(--support-pink); margin-bottom: 10px; }
.modal-content p { color: var(--text-dark); font-size: 0.95rem; margin-bottom: 20px; }

@media (max-width: 480px) {
    .partner-grid {
        gap: 10px;
    }
    .partner-card {
        padding: 12px 8px;
    }
    .p-amount { font-size: 1.1rem; }
    .net-income-amount { font-size: 1.8rem; }
}