:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-soft: #fcfcfd;
    --text: #17202a;
    --muted: #667085;
    --border: #e3e7ed;
    --accent: #176b52;
    --accent-soft: #e8f5ef;
    --danger: #b42318;
    --danger-soft: #fee4e2;
    --warning: #b54708;
    --warning-soft: #fffaeb;
    --info: #175cd3;
    --info-soft: #eff8ff;
    --purple: #6938ef;
    --purple-soft: #f4f3ff;
    --cancelled: #667085;
    --cancelled-soft: #f2f4f7;
    --shadow: 0 1px 3px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Tahoma, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}
button, input, select { font: inherit; }
button, select { cursor: pointer; }
a { color: inherit; }
.page-shell { max-width: 1500px; margin: 0 auto; padding: 24px; }
.narrow-page { max-width: 820px; }

.topbar {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 20px;
}
.compact-topbar { align-items: center; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 6px; font-size: 30px; }
h2 { font-size: 20px; }
.topbar p, .section-heading p, .hint, .auth-subtitle { color: var(--muted); margin-bottom: 0; }
.topbar-actions { display: flex; align-items: end; gap: 8px; flex-wrap: wrap; }
.month-switcher { min-width: 220px; }
.month-switcher label, .field label, .form-grid label, .payment-row label, .add-payment-form label, .auth-form label {
    display: block;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 6px;
}

input, select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 9px;
    background: #fff;
    color: var(--text);
    padding: 10px 12px;
    min-height: 42px;
}
input:focus, select:focus { outline: 2px solid #b7dfd0; border-color: var(--accent); }
button, .button-link {
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    border-radius: 9px;
    padding: 10px 14px;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
}
button:hover, .button-link:hover { filter: brightness(.98); }
button.primary, .button-link.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.secondary, .button-link.secondary { color: var(--accent); border-color: #b7dfd0; background: var(--accent-soft); }
.danger-btn { color: var(--danger); background: var(--danger-soft); border-color: #fecaca; }
.logout-form { margin: 0; }

.summary-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}
.summary-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    box-shadow: var(--shadow);
}
.summary-card span { color: var(--muted); display: block; margin-bottom: 8px; font-size: 13px; }
.summary-card strong { font-size: 24px; direction: ltr; display: block; text-align: right; font-variant-numeric: tabular-nums; }
.summary-card.good { background: var(--accent-soft); }
.summary-card.danger { background: var(--danger-soft); }

.actions-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 14px; margin-bottom: 18px; }
.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
    margin-bottom: 18px;
    box-shadow: var(--shadow);
}
details > summary { cursor: pointer; font-weight: 700; font-size: 17px; }
.panel > summary { margin-bottom: 14px; }
.inline-form { display: flex; gap: 10px; }
.inline-form input { flex: 1; }
.form-grid { display: grid; grid-template-columns: repeat(3, minmax(150px, 1fr)); gap: 12px; align-items: end; }
.form-grid.two-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid.one-col { grid-template-columns: 1fr; }
.form-grid label { margin: 0; }
.form-grid button { min-height: 42px; }
.span-two { grid-column: span 2; }
.hint { margin-top: 10px; font-size: 13px; }

.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; }
.section-heading h2 { margin-bottom: 4px; }
.expense-list { display: flex; flex-direction: column; gap: 12px; }
.expense-card {
    border: 1px solid var(--border);
    border-inline-start: 5px solid var(--danger);
    border-radius: 13px;
    background: var(--surface-soft);
    overflow: hidden;
}
.expense-status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    background: #fff;
}
.status-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 5px 10px;
    font-size: 12px;
    font-weight: 800;
    white-space: nowrap;
}
.status-badge-unpaid { color: var(--danger); background: var(--danger-soft); }
.status-badge-paid { color: var(--accent); background: var(--accent-soft); }
.status-badge-partial { color: var(--purple); background: var(--purple-soft); }
.status-badge-scheduled { color: var(--info); background: var(--info-soft); }
.status-badge-deferred, .status-badge-reserved { color: var(--warning); background: var(--warning-soft); }
.status-badge-cancelled { color: var(--cancelled); background: var(--cancelled-soft); text-decoration: line-through; }
.status-unpaid { border-inline-start-color: var(--danger); }
.status-paid { border-inline-start-color: var(--accent); }
.status-partial { border-inline-start-color: var(--purple); }
.status-scheduled { border-inline-start-color: var(--info); }
.status-deferred, .status-reserved { border-inline-start-color: var(--warning); }
.status-cancelled { border-inline-start-color: var(--cancelled); opacity: .82; }

.mini-metrics { display: flex; flex-wrap: wrap; gap: 8px 16px; color: var(--muted); font-size: 12px; }
.mini-metrics span { display: inline-flex; gap: 5px; align-items: baseline; }
.mini-metrics strong { color: var(--text); direction: ltr; font-variant-numeric: tabular-nums; }

.expense-editor {
    display: grid;
    grid-template-columns: 1.6fr .7fr 1fr 1.3fr auto auto;
    gap: 10px;
    align-items: end;
    padding: 12px;
}
.field label { margin: 0 0 5px; }
.checks { display: flex; flex-direction: column; gap: 7px; min-width: 125px; padding-bottom: 5px; }
.checks label, .checkbox-label {
    font-size: 12px !important;
    color: var(--text) !important;
    display: flex !important;
    align-items: center;
    gap: 7px;
}
.checks input, .checkbox-label input { width: auto; min-height: auto; }
.row-actions { display: flex; gap: 6px; }
.row-actions button { padding-inline: 11px; }

.payments-details { border-top: 1px solid var(--border); background: #fff; }
.payments-details > summary {
    list-style: none;
    padding: 11px 14px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.payments-details > summary::-webkit-details-marker { display: none; }
.payments-details > summary::before { content: '▸'; color: var(--muted); transition: transform .15s ease; }
.payments-details[open] > summary::before { transform: rotate(90deg); }
.payment-count {
    display: inline-flex;
    min-width: 24px;
    height: 24px;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--cancelled-soft);
    color: var(--muted);
    font-size: 11px;
}
.details-hint { margin-inline-start: auto; color: var(--muted); font-size: 12px; font-weight: 400; }
.payment-list { padding: 0 12px 6px; display: flex; flex-direction: column; gap: 8px; }
.payment-row {
    display: grid;
    grid-template-columns: .8fr .8fr 1.7fr auto;
    gap: 8px;
    align-items: end;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 9px;
}
.payment-row label, .add-payment-form label { margin: 0; }
.payment-actions { display: flex; gap: 6px; }
.payment-actions button { padding: 8px 10px; min-height: 42px; }
.empty-payment { color: var(--muted); font-size: 13px; margin: 0; padding: 4px 14px 12px; }
.add-payment-area { border-top: 1px dashed var(--border); padding: 12px; background: #fafcfb; }
.add-payment-form {
    display: grid;
    grid-template-columns: .8fr .8fr 1.7fr auto;
    gap: 8px;
    align-items: end;
}
.mark-paid-form { margin-top: 8px; display: flex; justify-content: flex-end; }
.paid-complete { margin: 0 12px 12px; padding: 10px 12px; border-radius: 9px; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 13px; }
.empty-state { text-align: center; padding: 30px; color: var(--muted); }
.add-panel h2 { margin-bottom: 14px; }

.flash, .fatal-error {
    border-radius: 12px;
    padding: 13px 15px;
    margin-bottom: 18px;
    border: 1px solid var(--border);
    background: #fff;
}
.flash-success { background: var(--accent-soft); border-color: #b7dfd0; color: var(--accent); }
.flash-info { background: var(--info-soft); border-color: #b2ddff; color: var(--info); }
.flash-error, .fatal-error { background: var(--danger-soft); border-color: #fecdca; color: var(--danger); }
.fatal-error p:last-child { margin-bottom: 0; }
code { direction: ltr; display: inline-block; }
.footer { color: var(--muted); font-size: 12px; text-align: center; padding: 8px 0 22px; }

/* Login / installer */
.auth-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 20px;
    background: linear-gradient(160deg, #eef6f2, var(--bg) 55%);
}
.auth-shell { width: min(100%, 440px); }
.install-shell { width: min(100%, 820px); }
.auth-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 26px;
    box-shadow: 0 12px 35px rgba(16, 24, 40, .08);
}
.auth-card h1 { text-align: center; margin-bottom: 6px; }
.auth-subtitle { text-align: center; margin-bottom: 20px; }
.brand-mark {
    width: 54px;
    height: 54px;
    border-radius: 15px;
    background: var(--accent);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 26px;
    font-weight: 900;
    margin: 0 auto 12px;
}
.auth-form { display: grid; gap: 12px; }
.auth-form label { margin: 0; }
.full-button { width: 100%; }
.form-section-title { font-weight: 800; margin: 18px 0 10px; padding-bottom: 7px; border-bottom: 1px solid var(--border); }
.form-section-title:first-of-type { margin-top: 0; }
.account-form { max-width: 520px; }

@media (max-width: 1180px) {
    .summary-grid { grid-template-columns: repeat(2, 1fr); }
    .actions-grid { grid-template-columns: 1fr; }
    .expense-editor { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .checks, .row-actions { grid-column: span 1; }
    .payment-row, .add-payment-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .payment-note { grid-column: span 1; }
}

@media (max-width: 760px) {
    .page-shell { padding: 14px; }
    .topbar { align-items: stretch; flex-direction: column; }
    .topbar-actions { align-items: stretch; display: grid; grid-template-columns: 1fr 1fr; }
    .month-switcher { min-width: 0; grid-column: 1 / -1; }
    .logout-form button, .topbar-actions .button-link { width: 100%; }
    .summary-grid { grid-template-columns: 1fr 1fr; }
    .summary-card { padding: 13px; }
    .summary-card strong { font-size: 19px; }
    .form-grid, .form-grid.two-col, .expense-editor, .payment-row, .add-payment-form { grid-template-columns: 1fr; }
    .span-two, .payment-note { grid-column: auto; }
    .inline-form { flex-direction: column; }
    .row-actions, .payment-actions { display: grid; grid-template-columns: 1fr 1fr; }
    .section-heading { align-items: stretch; flex-direction: column; }
    .expense-status-bar { align-items: flex-start; flex-direction: column; }
    .mini-metrics { width: 100%; justify-content: space-between; }
    .details-hint { display: none; }
    .mark-paid-form { justify-content: stretch; }
    .mark-paid-form button { width: 100%; }
    .auth-card { padding: 20px; }
}

@media (max-width: 460px) {
    .summary-grid { grid-template-columns: 1fr; }
    h1 { font-size: 25px; }
}

/* ===== واجهة أوضح - v2.1 ===== */
body {
    background:
        radial-gradient(circle at 90% 0%, rgba(23, 107, 82, .07), transparent 28%),
        var(--bg);
}

.page-shell { max-width: 1540px; }

.topbar {
    align-items: center;
    background: rgba(255, 255, 255, .94);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px 20px;
    box-shadow: 0 8px 28px rgba(16, 24, 40, .055);
}
.topbar h1 { letter-spacing: -.4px; }
.topbar p { max-width: 610px; }

input, select {
    transition: border-color .16s ease, box-shadow .16s ease, background-color .16s ease;
}
input:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(23, 107, 82, .12);
}

.summary-grid { gap: 14px; }
.summary-card {
    position: relative;
    min-height: 126px;
    border-top: 4px solid #d0d5dd;
    padding: 17px 18px;
    box-shadow: 0 6px 20px rgba(16, 24, 40, .045);
}
.summary-card::after {
    content: '';
    position: absolute;
    inset-inline-end: -24px;
    top: -28px;
    width: 86px;
    height: 86px;
    border-radius: 50%;
    background: rgba(102, 112, 133, .045);
}
.summary-card span { font-weight: 700; }
.summary-card strong { font-size: 25px; margin-bottom: 7px; }
.summary-card small { color: var(--muted); font-size: 11px; }
.summary-salary { border-top-color: var(--info); }
.summary-total { border-top-color: var(--warning); }
.summary-paid { border-top-color: var(--accent); }
.summary-pending { border-top-color: var(--purple); }
.summary-balance.good { border-top-color: var(--accent); }
.summary-balance.danger { border-top-color: var(--danger); }

.payment-progress-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 16px;
    margin: -4px 0 18px;
    box-shadow: var(--shadow);
}
.progress-copy {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 9px;
}
.progress-copy > div { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.progress-copy strong { font-size: 14px; }
.progress-copy span { color: var(--muted); font-size: 12px; direction: ltr; }
.progress-copy b { font-size: 18px; color: var(--accent); direction: ltr; }
.payment-progress {
    width: 100%;
    height: 10px;
    border: 0;
    border-radius: 999px;
    overflow: hidden;
    display: block;
    background: #edf0f2;
}
.payment-progress::-webkit-progress-bar { background: #edf0f2; border-radius: 999px; }
.payment-progress::-webkit-progress-value { background: var(--accent); border-radius: 999px; }
.payment-progress::-moz-progress-bar { background: var(--accent); border-radius: 999px; }

.actions-grid .panel { margin-bottom: 0; }
.actions-grid { margin-bottom: 18px; }

.expense-panel { padding: 20px; }
.section-heading {
    padding-bottom: 14px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
}
.section-heading h2 { font-size: 22px; }

.expense-list { gap: 13px; }
.expense-card {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 3px 14px rgba(16, 24, 40, .035);
    transition: box-shadow .18s ease, transform .18s ease, border-color .18s ease;
}
.expense-card:hover {
    box-shadow: 0 8px 24px rgba(16, 24, 40, .07);
    transform: translateY(-1px);
}
.expense-status-bar { padding: 13px 15px; }
.expense-identity {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.expense-title {
    font-size: 16px;
    line-height: 1.35;
    max-width: 430px;
    overflow-wrap: anywhere;
}
.status-badge { padding: 5px 9px; }
.zero-amount-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 8px;
    font-size: 11px;
    font-weight: 800;
    color: var(--cancelled);
    background: var(--cancelled-soft);
}
.mini-metrics {
    background: #f8fafb;
    border: 1px solid #edf0f2;
    border-radius: 10px;
    padding: 7px 10px;
}
.mini-metrics strong { font-size: 13px; }

.expense-editor { background: #fcfdfd; padding: 14px 15px; }
.expense-editor .field input,
.expense-editor .field select { background: #fff; }
.row-actions button:first-child { color: var(--accent); border-color: #b7dfd0; background: var(--accent-soft); }

.payments-details > summary { padding: 12px 15px; }
.payments-details[open] > summary { background: #fbfcfc; }

.zero-expenses-divider {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: 10px 0 0;
    padding: 15px 16px;
    border: 1px dashed #cfd4dc;
    border-radius: 13px;
    background: #f8f9fa;
    color: var(--cancelled);
}
.zero-expenses-divider > div { min-width: 0; }
.zero-expenses-divider strong { display: block; color: var(--text); font-size: 15px; margin-bottom: 2px; }
.zero-expenses-divider span { display: block; font-size: 12px; color: var(--muted); }
.zero-expenses-divider b {
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    min-width: 34px;
    height: 34px;
    padding: 0 8px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--border);
    color: var(--muted);
}
.expense-card.is-zero-amount {
    border-inline-start-color: #98a2b3;
    border-style: solid;
    background: #fafbfc;
}
.expense-card.is-zero-amount .expense-status-bar { background: #fafbfc; }
.expense-card.is-zero-amount .mini-metrics { background: #fff; }
.expense-card.is-zero-amount .amount-field input { border-style: dashed; border-color: #98a2b3; }

@media (max-width: 1180px) {
    .summary-grid { grid-template-columns: repeat(3, 1fr); }
    .summary-balance { grid-column: span 2; }
    .expense-title { max-width: 320px; }
}

@media (max-width: 760px) {
    .topbar { padding: 15px; border-radius: 15px; }
    .summary-grid { grid-template-columns: 1fr 1fr; }
    .summary-card { min-height: 112px; }
    .summary-balance { grid-column: 1 / -1; }
    .payment-progress-panel { margin-top: -3px; }
    .expense-panel { padding: 14px; }
    .expense-identity { width: 100%; }
    .expense-title { width: 100%; max-width: none; font-size: 17px; }
    .mini-metrics { width: 100%; }
    .zero-expenses-divider { align-items: flex-start; }
}

@media (max-width: 460px) {
    .summary-grid { grid-template-columns: 1fr; }
    .summary-balance { grid-column: auto; }
    .summary-card { min-height: 0; }
    .progress-copy { align-items: flex-start; }
    .progress-copy > div { display: block; }
    .progress-copy span { display: block; margin-top: 2px; }
}