@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&family=Pretendard:wght@400;600&display=swap');

:root {
    --primary-color: #2C3E50;
    --background-color: #F7F9FB;
    --card-bg-color: #FFFFFF;
    --border-color: #E5E8EC;
    --income-color: #2ECC71;
    --income-bg-color: rgba(46, 204, 113, 0.1);
    --expense-color: #E74C3C;
    --expense-bg-color: rgba(231, 76, 60, 0.1);
    --neutral-color: #95A5A6;
    --highlight-color: #3498DB;
    --warning-color: #F39C12;
    --font-family: 'Inter', 'Pretendard', sans-serif;
    --page-title-size: 24px;
    --section-title-size: 18px;
    --body-text-size: 14px;
    --key-number-size: 18px;
    --caption-size: 12px;
    --font-weight-normal: 400;
    --font-weight-bold: 600;
    --max-width: 1500px; /* Increased max-width */
    --card-border-radius: 10px;
    --card-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

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

body { font-family: var(--font-family); background-color: var(--background-color); color: var(--primary-color); line-height: 1.6; font-size: var(--body-text-size); }

.container { max-width: var(--max-width); margin: 0 auto; padding: 20px; }

header { margin-bottom: 25px; display: flex; justify-content: space-between; align-items: flex-start; border-bottom: 1px solid var(--border-color); padding-bottom: 20px; }
header .header-content { text-align: left; }
header h1 { font-size: var(--page-title-size); font-weight: var(--font-weight-bold); margin-bottom: 5px; }
header h1 a { text-decoration: none; color: inherit; }

/* Main Layout Grid */
.main-grid {
    display: grid;
    grid-template-columns: 600px 1fr; /* Widened the left settings panel */
    grid-template-areas:
        "ad-top ad-top"
        "settings right-column"
        "ad-bottom ad-bottom";
    gap: 25px;
    align-items: flex-start;
}

#ad-slot-top { grid-area: ad-top; }
.settings-panel { grid-area: settings; }
.right-column { grid-area: right-column; display: flex; flex-direction: column; gap: 25px; }
#ad-slot-bottom { grid-area: ad-bottom; }

.panel { background: var(--card-bg-color); padding: 25px; border-radius: var(--card-border-radius); box-shadow: var(--card-shadow); }

.settings-panel {
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.charts-panel { display: flex; flex-direction: column; gap: 25px; background: none; padding: 0; box-shadow: none; }

.ad-slot { background-color: var(--card-bg-color); border: 1px dashed var(--border-color); display: flex; align-items: center; justify-content: center; border-radius: var(--card-border-radius); min-height: 90px; box-shadow: var(--card-shadow); }
#ad-slot-header { min-height: 70px; flex-basis: 320px; margin-left: 20px; }
.ad-slot-main-top { grid-area: ad-top; }
.ad-slot-main-bottom { grid-area: ad-bottom; }

.settings-panel h2, .report-panel h2, .monthly-details-container h3 {
    font-size: var(--section-title-size);
    font-weight: var(--font-weight-bold);
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    display: flex;
    align-items: center;
}
.settings-panel h2 .icon, .monthly-details-container h3 .icon, .report-header h2 .icon { margin-right: 10px; color: var(--neutral-color); }
hr { border: none; border-top: 1px solid var(--border-color); margin: 25px 0; }

.input-group, .flow-group { margin-bottom: 25px; }
.input-group label, .flow-group h3 { display: block; font-weight: var(--font-weight-bold); margin-bottom: 12px; font-size: 1rem; }

.input-group input, .input-group select { width: 100%; padding: 12px; border: 1px solid var(--border-color); border-radius: 6px; font-size: var(--body-text-size); font-family: var(--font-family); }
.input-group input:focus, .input-group select:focus { outline: none; border-color: var(--highlight-color); box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2); }
.date-range-group { display: flex; gap: 15px; }
.date-range-group > div { flex: 1; }

/* Flow Table Styles */
.flow-table { display: flex; flex-direction: column; gap: 10px; margin-bottom: 15px; }

.flow-header, .flow-row { display: grid; gap: 8px; align-items: center; font-size: var(--caption-size); }
/* Adjusted grid for wider recurring flow inputs */
#recurring-flows-container .flow-header, #recurring-flows-container .flow-row { grid-template-columns: 1fr 70px 90px 45px 90px 90px 30px; }
#variable-flows-container .flow-header { grid-template-columns: 1fr 80px 100px 100px 30px; }
#variable-flows-container .flow-row { grid-template-columns: 2fr 1fr 1.5fr 1.5fr 0.5fr; } /* FIX: Layout adjustment */


.flow-header { font-weight: var(--font-weight-bold); color: var(--neutral-color); padding: 0 10px; border-bottom: 1px solid var(--border-color); padding-bottom: 8px; }
.flow-row { background-color: var(--background-color); padding: 10px; border-radius: 8px; border: 1px solid var(--border-color); }

.flow-row input, .flow-row select { width: 100%; padding: 8px; border: 1px solid #ccc; border-radius: 4px; font-size: var(--body-text-size); }

.flow-row select[data-field="type"] { transition: background-color 0.2s, border-color 0.2s; }
.flow-row select[data-field="type"] option[value="income"] { background-color: var(--income-bg-color); }
.flow-row select[data-field="type"] option[value="expense"] { background-color: var(--expense-bg-color); }

.flow-row input:focus, .flow-row select:focus { outline: none; border-color: var(--highlight-color); box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2); }
.delete-flow-btn { background: none; border: none; color: var(--expense-color); font-size: 1.4rem; cursor: pointer; opacity: 0.6; transition: opacity 0.2s; padding: 0; display: flex; align-items: center; justify-content: center; }
.delete-flow-btn:hover { opacity: 1; }

.flow-group button { width: 100%; padding: 10px; border: 1px dashed var(--highlight-color); background: none; color: var(--highlight-color); border-radius: 6px; cursor: pointer; transition: all 0.2s; font-weight: var(--font-weight-bold); }
.flow-group button:hover { background: rgba(52, 152, 219, 0.05); }

.actions { display: flex; gap: 10px; }
.actions button { flex: 1; padding: 12px; border-radius: 6px; border: none; font-size: 1rem; font-weight: var(--font-weight-bold); cursor: pointer; transition: background-color 0.2s, transform 0.1s; }
.actions button:active { transform: translateY(1px); }
.actions button.primary { background-color: var(--primary-color); color: white; }
.actions button.primary:hover { background-color: #3e5771; }

.button-group { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

/* Chart & Report Styles */
.chart-container { background: var(--card-bg-color); padding: 20px; border-radius: var(--card-border-radius); box-shadow: var(--card-shadow); position: relative; height: 350px; }
.chart-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; }

.report-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
#print-report-btn { padding: 8px 12px; background-color: var(--highlight-color); color: white; border: none; border-radius: 4px; cursor: pointer; }

.report-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 15px; margin-bottom: 25px; }
.summary-card { background-color: var(--background-color); padding: 15px; border-radius: 8px; border-left: 5px solid var(--highlight-color); }
.summary-card h4 { font-size: var(--caption-size); font-weight: var(--font-weight-bold); color: var(--neutral-color); }
.summary-card p { font-size: var(--key-number-size); font-weight: var(--font-weight-bold); }
.income-text { color: var(--income-color) !important; }
.expense-text { color: var(--expense-color) !important; }

#monthly-details-content { max-height: 500px; overflow-y: auto; padding-right: 10px; }

.daily-flow-list, .flow-details { list-style: none; }
.daily-flow-item { padding: 12px; border-radius: 6px; margin-bottom: 8px; border: 1px solid var(--border-color); }
.day-header { display: flex; justify-content: space-between; align-items: center; font-weight: var(--font-weight-bold); margin-bottom: 8px; font-size: 1rem; }
.flow-details { margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--border-color); }
.flow-detail-item { display: flex; justify-content: space-between; font-size: var(--caption-size); padding: 4px 0; }

footer { text-align: center; margin-top: 40px; padding: 20px; border-top: 1px solid var(--border-color); background-color: var(--card-bg-color); grid-column: 1 / -1; }

@media (max-width: 1400px) { /* Adjust breakpoint for wider layout */
    .main-grid { grid-template-columns: 1fr; grid-template-areas: "ad-top" "settings" "right-column" "ad-bottom"; }
    .settings-panel { position: static; max-height: none; }
}

@media (max-width: 768px) {
    .chart-grid, .button-group { grid-template-columns: 1fr; }

    .flow-header { display: none; }

    .flow-row {
        grid-template-columns: 1fr 1fr; 
        gap: 15px;
        padding: 15px;
    }

    .flow-row > div {
        display: flex; 
        flex-direction: column;
    }

    .flow-row > div[data-label]::before {
        content: attr(data-label);
        font-size: var(--caption-size);
        font-weight: var(--font-weight-bold);
        color: var(--neutral-color);
        margin-bottom: 5px;
    }

    #recurring-flows-container .flow-row,
    #variable-flows-container .flow-row,
    #event-flows-container .flow-row {
        grid-template-columns: 1fr 1fr; 
    }

    .flow-row > div:nth-child(1) { grid-column: 1 / -1; }
    .flow-row > div:last-child { grid-column: 1 / -1; align-items: center; }
    
    .delete-flow-btn { width: 100%; padding: 8px; border: 1px solid var(--expense-color); color: var(--expense-color); background-color: var(--expense-bg-color); border-radius: 4px; font-size: 1rem; }
}