:root {
    --bg-color: #f7f9fa; /* Light grey background similar to Sabadell */
    --surface-color: #ffffff; /* White cards */
    --text-color: #1a1a1a;
    --text-muted: #5e6c84; /* Darker grey for secondary text */
    --primary-color: #005ce6; /* Sabadell Blue */
    --primary-hover: #004bbd; /* Darker Blue */
    --accent-color: #00A388; /* Sabadell Green Accent */
    --border-color: #e2e8f0;
    --input-bg: #ffffff;
    --danger-color: #d32f2f;
    --danger-bg: #fdeceb;
    --warning-color: #ed8e00;
    --warning-bg: #fff5e6;
    --success-color: #0b8a4f;
    --success-bg: #e6f6ec;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    padding: 0; /* Reset padding for full width header */
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Header styling */
header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

header p {
    color: var(--text-muted);
    font-size: 1rem;
}

.app-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.main-split {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 2.5rem;
    align-items: start;
}

@media (max-width: 1024px) {
    .main-split {
        grid-template-columns: 1fr;
    }
}

/* White clean panels */
.panel {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px; /* Softer radius for corporate look */
    padding: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color);
}

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

.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--input-bg);
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.2s ease;
    font-family: inherit;
}

.input-suffix {
    position: absolute;
    right: 1rem;
    color: var(--text-muted);
    font-weight: 500;
    pointer-events: none;
}

.form-group input[type="number"]:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 92, 230, 0.15);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.form-group small.warning {
    color: var(--danger-color);
    background: var(--danger-bg);
    padding: 0.75rem;
    border-radius: 6px;
    border-left: 4px solid var(--danger-color);
    margin-top: 0.75rem;
    font-size: 0.85rem;
}

.hidden {
    display: none !important;
}

/* Checkbox styling */
input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--primary-color);
    cursor: pointer;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
}

.checkbox-label {
    font-size: 0.95rem;
    color: var(--text-color);
    cursor: pointer;
    line-height: 1.4;
    user-select: none;
}

/* Range slider styling */
input[type="range"] {
    width: 100%;
    accent-color: var(--primary-color);
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    outline: none;
    appearance: none;
    margin-top: 0.5rem;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    border: 2px solid white;
}

.range-value {
    text-align: right;
    font-weight: 600;
    margin-top: 0.5rem;
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-top: 1rem;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

/* Summary Panel */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-left: 4px solid var(--primary-color);
}

.card#loan-card { border-left-color: var(--primary-color); }
.card:nth-child(2) { border-left-color: var(--warning-color); }
.card:nth-child(3) { border-left-color: var(--accent-color); }

.card h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.card p.highlight {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.card small {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Results header */
.mortgage-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.mortgage-list-header h2 {
    margin-bottom: 0;
    font-size: 1.25rem;
}

.filters {
    display: flex;
    gap: 0.5rem;
    background-color: #f1f5f9;
    padding: 0.25rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.filter-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.filter-btn:hover {
    color: var(--text-color);
}

.filter-btn.active {
    background-color: white;
    color: var(--primary-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Mortgage Item styled like corporate cards */
.mortgage-grid {
    display: grid;
    gap: 1.5rem;
    min-height: 50vh;
}

.mortgage-item {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.mortgage-item.denied {
    opacity: 0.6;
    background-color: #fafafa;
}

.mortgage-item:hover {
    border-color: #cbd5e1;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
}

.mortgage-item.denied:hover {
    border-color: rgba(239, 68, 68, 0.3);
}

.bank-info {
    flex: 1 1 200px;
}

.bank-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mortgage-type {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

/* Rates layout */
.rates {
    display: flex;
    gap: 2rem;
    flex: 1 1 250px;
    justify-content: center;
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    padding: 0 2rem;
    margin: 0 1.5rem;
}

.rate-box {
    text-align: center;
}

.rate-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.rate-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.1rem;
    font-weight: 500;
}

/* Payment Layout */
.payment-info {
    text-align: right;
    flex: 1 1 160px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.monthly-payment {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
}

.monthly-payment.danger {
    color: var(--danger-color);
}

.payment-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

/* Corporate Badges */
.req-badge {
    display: inline-block;
    background-color: #f1f5f9;
    color: var(--text-muted);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 0.25rem;
    border: 1px solid #e2e8f0;
}

.req-badge.error {
    background-color: var(--danger-bg);
    color: var(--danger-color);
    border-color: #fca5a5;
    margin-top: 0.5rem;
}

.req-badge.warning {
    background-color: var(--success-bg);
    color: var(--success-color);
    border-color: #a7f3d0;
    margin-top: 0.5rem;
}

.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
    background-color: var(--surface-color);
    border-radius: 8px;
    border: 1px dashed var(--border-color);
    font-size: 1rem;
}

footer {
    text-align: center;
    margin-top: 4rem;
    padding: 2rem 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Navigation Header */
.nav-header { display: flex; flex-wrap: wrap; justify-content: flex-start; gap: 2rem; margin-top: 1rem; }
.nav-link { display: inline-block; width: max-content; text-decoration: none; color: var(--text-muted); font-weight: 600; font-size: 1.05rem; padding: 0.5rem 0; border-bottom: 2px solid transparent; transition: all 0.2s; }
.nav-link:hover { color: var(--primary-color); }
.nav-link.active { color: var(--primary-color); border-bottom-color: var(--primary-color); }

/* Modal styling */
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.hidden {
    display: none !important;
}

.modal-content {
    background: var(--surface-color);
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    border-radius: 8px;
    padding: 0;
    overflow: hidden;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: #f8fafc;
}

.modal-header h2 { margin: 0; font-size: 1.25rem; }

.close-btn {
    background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-muted); padding: 0.5rem; line-height: 1; border-radius: 4px; transition: background 0.2s;
}

.close-btn:hover {
    background: #e2e8f0; color: var(--text-color);
}

.table-container {
    padding: 0;
    overflow-y: auto;
}

#amortization-table {
    width: 100%; border-collapse: collapse; text-align: right;
}

#amortization-table th, #amortization-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

#amortization-table th { background: white; position: sticky; top: 0; color: var(--text-muted); font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
#amortization-table tr:hover { background-color: #f8fafc; }

@media (max-width: 900px) {
    .mortgage-item {
        flex-direction: column;
        align-items: stretch;
        gap: 1.5rem;
    }
    .payment-info {
        text-align: center;
        align-items: center;
        border-top: 1px solid var(--border-color);
        padding-top: 1.5rem;
    }
    .rates {
        justify-content: space-around;
        padding: 1.5rem 0;
        margin: 0;
        border-left: none;
        border-right: none;
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }
    header { padding: 1.5rem; }
    .app-container { padding: 0 1rem; }
}