/* =========================================================
   Loans & Payments - Professional UI
   ========================================================= */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --dark: #111827;
    --dark-2: #1f2937;
    --text: #1f2937;
    --muted: #6b7280;
    --border: #e5e7eb;
    --background: #f5f7fb;
    --white: #ffffff;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --radius: 10px;
    --shadow: 0 2px 10px rgba(15, 23, 42, 0.06);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Arial,
        sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.5;
}

/* =========================================================
   Top Navigation
   ========================================================= */

.topbar {
    background: var(--dark);
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.nav {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
}

.brand {
    color: #fff;
    text-decoration: none;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.nav nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

.nav nav a {
    color: #d1d5db;
    text-decoration: none;
    padding: 9px 12px;
    border-radius: 7px;
    font-size: 14px;
    transition: all .15s ease;
}

.nav nav a:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
}

/* =========================================================
   Layout
   ========================================================= */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

main.container {
    min-height: calc(100vh - 145px);
    padding-top: 5px;
    padding-bottom: 35px;
}

/* =========================================================
   Page Header
   ========================================================= */

.page-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin: 30px 0 22px;
}

.page-head h1 {
    margin: 0;
    font-size: 28px;
    line-height: 1.2;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: -0.5px;
}

.page-head .muted {
    margin-top: 5px;
}

/* =========================================================
   Cards
   ========================================================= */

.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}

.card h2,
.card h3 {
    margin-top: 0;
    color: var(--dark);
}

/* =========================================================
   Dashboard Grid
   ========================================================= */

.grid {
    display: grid;
    gap: 18px;
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

/* =========================================================
   Dashboard Metrics
   ========================================================= */

.metric {
    margin-top: 8px;
    font-size: 27px;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: -0.5px;
}

.muted {
    color: var(--muted);
    font-size: 14px;
}

/* =========================================================
   Buttons
   ========================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 9px 15px;
    border: 1px solid transparent;
    border-radius: 7px;
    background: var(--primary);
    color: #fff;
    text-decoration: none;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s ease, transform .05s ease;
}

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

.btn:active {
    transform: translateY(1px);
}

.btn.secondary {
    background: #fff;
    border-color: #d1d5db;
    color: #374151;
}

.btn.secondary:hover {
    background: #f9fafb;
}

.btn.danger {
    background: var(--danger);
}

.actions {
    display: flex;
    align-items: center;
    gap: 9px;
    flex-wrap: wrap;
}

/* =========================================================
   Forms
   ========================================================= */

.form-card {
    max-width: 760px;
}

.field {
    margin-bottom: 17px;
}

.field label {
    display: block;
    margin-bottom: 6px;
    color: #374151;
    font-size: 14px;
    font-weight: 600;
}

.field input,
.field select,
.field textarea {
    width: 100%;
    min-height: 42px;
    padding: 9px 11px;
    border: 1px solid #d1d5db;
    border-radius: 7px;
    background: #fff;
    color: #111827;
    font: inherit;
    outline: none;
    transition: border-color .15s ease, box-shadow .15s ease;
}

.field textarea {
    min-height: 100px;
    resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .10);
}

.check {
    display: flex !important;
    align-items: center;
    gap: 8px;
    font-weight: 500 !important;
}

.check input {
    width: auto;
    min-height: auto;
}

/* =========================================================
   Tables
   ========================================================= */

.table-wrap {
    overflow-x: auto;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 13px 15px;
    text-align: left;
    border-bottom: 1px solid #edf0f3;
    white-space: nowrap;
}

.table th {
    background: #f8fafc;
    color: #4b5563;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .3px;
}

.table td {
    font-size: 14px;
}

.table tbody tr:last-child td {
    border-bottom: 0;
}

.table tbody tr:hover {
    background: #fafcff;
}

/* =========================================================
   Badges
   ========================================================= */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 9px;
    border-radius: 999px;
    background: #eef2f7;
    color: #4b5563;
    font-size: 12px;
    font-weight: 600;
}

.badge.good {
    background: #eaf7ee;
    color: #166534;
}

.badge.warn {
    background: #fff4df;
    color: #92400e;
}

.badge.danger {
    background: #feecec;
    color: #991b1b;
}

/* =========================================================
   Alerts
   ========================================================= */

.alert {
    margin-bottom: 18px;
    padding: 12px 15px;
    border: 1px solid #fecaca;
    border-radius: 8px;
    background: #fef2f2;
    color: #991b1b;
    font-size: 14px;
}

.alert.success {
    border-color: #bbf7d0;
    background: #f0fdf4;
    color: #166534;
}

/* =========================================================
   Login
   ========================================================= */

.login {
    width: 100%;
    max-width: 430px;
    margin: 70px auto;
}

.login h1 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 25px;
    color: var(--dark);
}

/* =========================================================
   Footer
   ========================================================= */

.footer {
    margin-top: auto;
    padding: 22px 0;
    border-top: 1px solid var(--border);
    background: #fff;
    color: #6b7280;
    text-align: center;
    font-size: 13px;
}

.footer a {
    color: #374151;
    text-decoration: none;
    font-weight: 600;
}

.footer a:hover {
    color: var(--primary);
}

/* =========================================================
   Mobile
   ========================================================= */

@media (max-width: 900px) {

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav {
        min-height: auto;
        padding-top: 14px;
        padding-bottom: 14px;
        align-items: flex-start;
        flex-direction: column;
    }

    .nav nav {
        width: 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
    }

    .nav nav a {
        white-space: nowrap;
    }
}

@media (max-width: 600px) {

    .container {
        padding-left: 14px;
        padding-right: 14px;
    }

    main.container {
        min-height: calc(100vh - 170px);
    }

    .grid-4,
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .page-head {
        align-items: flex-start;
        flex-direction: column;
        margin-top: 22px;
    }

    .page-head h1 {
        font-size: 24px;
    }

    .card {
        padding: 17px;
    }

    .metric {
        font-size: 25px;
    }
}

/* =========================================================
   INSTALLMENT FORM
   ========================================================= */

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: #1f2937;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    box-sizing: border-box;
    padding: 11px 13px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    background: #ffffff;
    color: #172033;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.4;
    outline: none;
    transition: border-color 0.15s ease,
                box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-group input[readonly] {
    background: #f1f5f9;
    color: #0f172a;
    font-weight: 600;
}

.form-help {
    display: block;
    color: #64748b;
    font-size: 12px;
    line-height: 1.4;
}

.calculated-field {
    background: #f8fafc !important;
    border-color: #94a3b8 !important;
    font-weight: 700 !important;
}


/* =========================================================
   INSTALLMENT SUMMARY
   ========================================================= */

.installment-summary {
    margin-top: 24px;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;

    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
}

.installment-summary > div {
    padding: 14px 16px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
}

.installment-summary span {
    display: block;
    margin-bottom: 6px;
    color: #64748b;
    font-size: 12px;
    font-weight: 500;
}

.installment-summary strong {
    display: block;
    color: #172033;
    font-size: 17px;
    font-weight: 700;
}


/* =========================================================
   ALERTS
   ========================================================= */

.alert {
    margin-bottom: 20px;
    padding: 13px 16px;
    border-radius: 8px;
    font-size: 14px;
}

.alert-danger {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}


/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 800px) {

    .form-grid {
        grid-template-columns: 1fr;
    }

    .installment-summary {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 500px) {

    .installment-summary {
        grid-template-columns: 1fr;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px;
    }
}

/* =========================================================
   SITE FOOTER
   ========================================================= */

.site-footer {
    margin-top: 50px;
    background: #111827;
    border-top: 1px solid #1f2937;
    color: #cbd5e1;
}

.site-footer .container {
    width: 100%;
}

.footer-content {
    min-height: 72px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 20px;
}

.footer-brand {
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
}

.footer-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;

    gap: 9px;

    color: #94a3b8;
    font-size: 13px;
    line-height: 1.5;
    text-align: right;
}

.footer-right strong {
    color: #ffffff;
    font-weight: 600;
}

.footer-separator {
    color: #475569;
}


@media (max-width: 700px) {

    .footer-content {
        min-height: auto;

        padding-top: 20px;
        padding-bottom: 20px;

        flex-direction: column;
        justify-content: center;

        text-align: center;
    }

    .footer-right {
        flex-wrap: wrap;
        justify-content: center;

        text-align: center;
    }

}


@media (max-width: 450px) {

    .footer-right {
        flex-direction: column;
        gap: 4px;
    }

    .footer-separator {
        display: none;
    }

}