:root {
    --ink: #0f172a;
    --ink-soft: #334155;
    --muted: #64748b;
    --paper: #f1f5f9;
    --paper-2: #e2e8f0;
    --surface: #ffffff;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-soft: #dbeafe;
    --navy: #0f172a;
    --success: #15803d;
    --success-bg: #dcfce7;
    --fail: #b91c1c;
    --fail-bg: #fee2e2;
    --warn-bg: #fef9c3;
    --line: #e2e8f0;
    --shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
    --radius: 8px;
    --radius-lg: 12px;
    --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.6;
    color: var(--ink);
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
.brand strong,
.auth-brand strong {
    font-family: var(--font);
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 0;
}

a {
    color: var(--primary);
    text-decoration: none;
}

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

code {
    font-size: 0.9em;
    background: var(--paper);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Auth / login */
.auth-body {
    background: var(--paper);
    min-height: 100vh;
}

.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    gap: 20px;
}

.auth-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.auth-brand strong {
    display: block;
    font-size: 18px;
    color: var(--ink);
}

.auth-brand small {
    display: block;
    font-size: 13px;
    color: var(--muted);
    font-weight: 400;
}

.auth-card {
    width: min(400px, 100%);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-md);
}

.auth-card h1 {
    font-size: 22px;
    margin-bottom: 4px;
    color: var(--ink);
}

.auth-subtitle {
    margin: 0 0 24px;
    font-size: 14px;
    color: var(--muted);
}

.auth-card form {
    display: grid;
    gap: 4px;
}

/* Public pages */
.public-body {
    background: var(--paper);
    color: var(--ink);
}

.public-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--navy);
    color: #fff;
    border-bottom: none;
}

.public-main {
    padding: 32px 24px 48px;
    max-width: 1200px;
    margin: 0 auto;
}

.brand,
.brand-dark {
    display: flex;
    gap: 12px;
    align-items: center;
    color: inherit;
    text-decoration: none;
}

.brand strong,
.brand-dark strong {
    font-size: 15px;
    font-weight: 600;
}

.brand small,
.brand-dark small {
    display: block;
    font-size: 12px;
    font-weight: 400;
    opacity: 0.75;
    margin-top: 1px;
}

.brand-mark {
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    display: grid;
    place-items: center;
    background: var(--primary);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.ghost-link {
    color: #e2e8f0;
    font-size: 13px;
    font-weight: 500;
}

.ghost-link:hover {
    color: #fff;
}

/* Checkout */
.checkout-shell,
.result-shell {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 32px;
    align-items: start;
}

.checkout-copy h1,
.result-card h1 {
    font-size: 24px;
    line-height: 1.3;
    margin: 8px 0 12px;
    color: var(--ink);
}

.checkout-copy > p {
    color: var(--muted);
    font-size: 14px;
    margin: 0 0 16px;
}

.eyebrow {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    margin: 0;
    text-transform: none;
    letter-spacing: 0;
}

.flow-list,
.bank-note {
    padding-left: 18px;
    line-height: 1.7;
    color: var(--muted);
    font-size: 14px;
    margin: 0;
}

.checkout-form,
.result-card {
    background: var(--surface);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
}

.checkout-form fieldset {
    border: 0;
    margin: 0 0 20px;
    padding: 0;
}

.checkout-form legend {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--ink);
}

label {
    display: grid;
    gap: 6px;
    margin-bottom: 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--ink-soft);
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--line);
    background: var(--surface);
    border-radius: var(--radius);
    padding: 10px 12px;
    font: inherit;
    color: var(--ink);
    transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-soft);
}

.grid-2,
.grid-3 {
    display: grid;
    gap: 12px;
}

.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }

.card-box {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px;
}

.btn-primary,
.btn-secondary {
    border: 0;
    cursor: pointer;
    border-radius: var(--radius);
    padding: 11px 18px;
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    transition: background 0.15s;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    width: 100%;
}

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--surface);
    border: 1px solid var(--line);
    color: var(--ink-soft);
}

.btn-secondary:hover {
    background: var(--paper);
}

.fine-print,
.muted {
    font-size: 12px;
    color: var(--muted);
    margin-top: 12px;
}

.field-error {
    color: var(--fail);
    font-weight: 500;
    font-size: 12px;
}

.flash {
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 16px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid transparent;
    width: 100%;
    max-width: 400px;
}

.flash-error {
    background: var(--fail-bg);
    color: var(--fail);
    border-color: #fecaca;
}

.flash-success {
    background: var(--success-bg);
    color: var(--success);
    border-color: #bbf7d0;
}

.result-shell {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
}

.result-card dl,
.kv {
    display: grid;
    gap: 8px;
}

.result-card dl div,
.kv div {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 8px;
    font-size: 13px;
}

.pill {
    display: inline-flex;
    border-radius: 4px;
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 600;
}

.pill-success { background: var(--success-bg); color: var(--success); }
.pill-failure,
.pill-callback_failed { background: var(--fail-bg); color: var(--fail); }
.pill-initialized,
.pill-pending { background: var(--warn-bg); color: #854d0e; }

/* Admin */
.admin-body {
    display: grid;
    grid-template-columns: 220px 1fr;
    min-height: 100vh;
    background: var(--paper);
}

.sidebar {
    background: var(--navy);
    color: #f8fafc;
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar nav {
    display: grid;
    gap: 2px;
}

.sidebar nav a {
    color: #cbd5e1;
    padding: 9px 12px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
}

.sidebar nav a.active,
.sidebar nav a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.sidebar-foot {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: #94a3b8;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-foot a {
    color: #cbd5e1;
}

.admin-main {
    padding: 24px 28px;
}

.page-head,
.panel-head,
.filter-bar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: end;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.page-head h1,
.panel h2 {
    margin: 4px 0 0;
    font-size: 22px;
    font-weight: 600;
    color: var(--ink);
}

.stat-grid,
.detail-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 20px;
}

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

.stat-card,
.panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 18px;
    box-shadow: var(--shadow);
}

.stat-card strong {
    display: block;
    font-size: 22px;
    font-weight: 600;
    margin: 6px 0 4px;
    color: var(--ink);
}

.stat-card span,
.stat-card small {
    font-size: 12px;
    color: var(--muted);
}

.stat-card.warn {
    background: #fffbeb;
    border-color: #fde68a;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

th {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--line);
    font-size: 11px;
    font-weight: 600;
    color: var(--muted);
    background: var(--paper);
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
    color: var(--ink-soft);
}

td small {
    display: block;
    color: var(--muted);
    font-size: 12px;
}

.filter-bar input,
.filter-bar select {
    min-width: 140px;
}

.pager {
    display: flex;
    gap: 6px;
    padding-top: 14px;
}

.pager a {
    padding: 6px 10px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--line);
    font-size: 13px;
}

.copy-row {
    display: flex;
    gap: 8px;
}

.copy-row input {
    flex: 1;
}

.admin-body .stat-card {
    text-decoration: none;
    color: inherit;
}

.admin-body .stat-card:hover {
    border-color: #cbd5e1;
}

.settings-panel form {
    max-width: 520px;
}

/* POS checkout - single screen, no side gap */
.pos-checkout {
    max-width: 1280px;
}

.page-head--tight {
    margin-bottom: 12px;
    align-items: center;
}

.page-head--tight h1 {
    margin: 0;
    font-size: 20px;
}

.page-head--tight .muted {
    margin: 2px 0 0;
    font-size: 12px;
}

.pos-form {
    padding: 16px 18px;
}

.pos-form label {
    margin-bottom: 8px;
    font-size: 12px;
}

.pos-form input,
.pos-form select,
.pos-form textarea {
    padding: 8px 10px;
    font-size: 13px;
}

.pos-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr) minmax(0, 1.15fr);
    gap: 16px;
    align-items: start;
}

.pos-block-title {
    margin: 0 0 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--line);
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-soft);
}

.pos-block--card {
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 12px;
}

.pos-hint {
    margin: 4px 0 0;
    font-size: 11px;
}

.pos-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--line);
}

.pos-actions .btn-primary {
    width: auto;
    min-width: 220px;
}

.checkout-shell--public {
    max-width: 1080px;
    margin: 0 auto;
}

.report-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 14px;
}

.report-panel h2 {
    margin: 0 0 8px;
    font-size: 15px;
}

.report-panel .muted {
    margin: 0 0 10px;
    font-size: 12px;
}

.report-panel--failed {
    border-color: #fecaca;
    background: #fffafa;
}

.report-panel--success {
    border-color: #bbf7d0;
    background: #fafffb;
}

.iyzico-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    margin-bottom: 14px;
    font-size: 13px;
}

.iyzico-status-bar strong {
    margin-right: 8px;
}

.iyzico-status-bar__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--muted);
    white-space: nowrap;
}

.iyzico-status-bar--success {
    background: var(--success-bg);
    border-color: #bbf7d0;
    color: var(--success);
}

.iyzico-status-bar--error {
    background: var(--fail-bg);
    border-color: #fecaca;
    color: var(--fail);
}

.iyzico-status-bar--warning {
    background: var(--warn-bg);
    border-color: #fde68a;
    color: #92400e;
}

@media (max-width: 1100px) {
    .pos-grid,
    .report-split {
        grid-template-columns: 1fr;
    }

    .pos-block--card {
        grid-column: 1 / -1;
    }
}

@media (max-width: 980px) {
    .checkout-shell,
    .pos-grid,
    .admin-body,
    .stat-grid,
    .detail-grid,
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .pos-actions .btn-primary {
        width: 100%;
    }

    .sidebar {
        position: sticky;
        top: 0;
        z-index: 10;
        flex-direction: row;
        overflow-x: auto;
    }

    .sidebar nav {
        grid-auto-flow: column;
        grid-auto-columns: max-content;
    }

    .sidebar-foot {
        display: none;
    }

    .public-header,
    .public-main,
    .admin-main {
        padding: 16px;
    }
}