/* ── CSS Custom Properties ─────────────────────────────────────── */

:root {
    --bg:            #fafafa;
    --surface:       #ffffff;
    --surface-alt:   #f5f5f5;
    --border:        #e5e7eb;
    --text:          #1a1a1a;
    --text-muted:    #6b7280;
    --text-dim:      #9ca3af;
    --primary:       #003366;
    --primary-hover: #002244;
    --nav-bg:        #ffffff;
    --nav-text:      #374151;
    --radius:        4px;
    --transition:    0.15s ease;
    --success:       #16a34a;
    --success-bg:    #f0fdf4;
    --danger:        #dc2626;
    --danger-bg:     #fef2f2;
}

[data-theme="dark"] {
    --bg:            #111111;
    --surface:       #1a1a1a;
    --surface-alt:   #222222;
    --border:        #2e2e2e;
    --text:          #f0f0f0;
    --text-muted:    #888888;
    --text-dim:      #555555;
    --primary:       #4a90d9;
    --primary-hover: #60a5fa;
    --nav-bg:        #1a1a1a;
    --nav-text:      #d0d0d0;
}

/* ── Base ──────────────────────────────────────────────────────── */

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

html {
    transition: background-color var(--transition), color var(--transition);
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    transition: background-color var(--transition), color var(--transition);
}

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

a:hover { text-decoration: underline; }

/* ── Site Header ───────────────────────────────────────────────── */

.site-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    background-color: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    height: 52px;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition), border-color var(--transition);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.logo-icon {
    width: 26px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.logo-icon path {
    fill: var(--primary);
    transition: fill var(--transition);
}

.logo-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.01em;
    transition: color var(--transition);
}

/* Center nav */
.header-nav {
    display: flex;
    justify-content: center;
}

/* Right side: user info + actions */
.header-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

.nav-user {
    font-size: 13px;
    color: var(--text-muted);
    transition: color var(--transition);
}

.nav-user strong {
    color: var(--text);
    font-weight: 500;
}

/* .badge-admin merged into .avatar-btn */

/* ── Theme Toggle ──────────────────────────────────────────────── */

.theme-toggle {
    width: 32px;
    height: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background-color: transparent;
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition), border-color var(--transition), color var(--transition);
    flex-shrink: 0;
}

.theme-toggle:hover {
    background-color: var(--surface-alt);
    color: var(--text);
    border-color: var(--text-muted);
}

/* ── Buttons ───────────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
    border: 1px solid var(--primary);
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    text-decoration: none;
    color: #fff;
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}
.btn-outline:hover {
    background-color: var(--primary);
    color: #fff;
    text-decoration: none;
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}
.btn-ghost:hover {
    background-color: var(--surface-alt);
    color: var(--text);
    border-color: var(--text-muted);
    text-decoration: none;
}

/* ── Site Content & Footer ─────────────────────────────────────── */

.site-content {
    min-height: calc(100vh - 52px - 44px);
    padding: 24px 0;
}

.site-footer {
    text-align: center;
    padding: 12px;
    border-top: 1px solid var(--border);
    transition: border-color var(--transition);
}

.disclaimer {
    font-size: 13px;
    color: var(--text-dim);
    margin: 0;
    transition: color var(--transition);
}

/* ── Page containers ───────────────────────────────────────────── */

.page {
    width: min(1060px, calc(100vw - 32px));
    margin: 0 auto;
    padding: 24px 0;
}

/* ── Cards ─────────────────────────────────────────────────────── */

.card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    transition: background-color var(--transition), border-color var(--transition);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    transition: border-color var(--transition);
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition);
}

/* ── Balance Grid ──────────────────────────────────────────────── */

.balance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    margin-bottom: 24px;
    transition: background-color var(--transition), border-color var(--transition);
}

.balance-card {
    background-color: var(--surface);
    padding: 20px 24px;
    transition: background-color var(--transition);
}

.balance-card-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 6px;
    transition: color var(--transition);
}

.balance-card-amount {
    font-size: 26px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.5px;
    line-height: 1.2;
    transition: color var(--transition);
}

.balance-card-id {
    font-size: 12px;
    color: var(--text-dim);
    margin-top: 4px;
    font-family: ui-monospace, 'SF Mono', 'Cascadia Code', monospace;
    transition: color var(--transition);
}

/* ── Customer Info Grid ────────────────────────────────────────── */

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.info-item label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted);
    display: block;
    margin-bottom: 2px;
    transition: color var(--transition);
}

.info-item span {
    font-size: 14px;
    color: var(--text);
    transition: color var(--transition);
}

/* ── Section headers ───────────────────────────────────────────── */

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
}

.section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    transition: color var(--transition);
}

/* ── Filter bar ────────────────────────────────────────────────── */

.filter-bar {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filter-group label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition);
}

.filter-group input[type="date"],
.filter-group select {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--text);
    background-color: var(--surface);
    outline: none;
    transition: border-color var(--transition), background-color var(--transition), color var(--transition);
    cursor: pointer;
}

.filter-group input[type="date"]:focus,
.filter-group select:focus {
    border-color: var(--primary);
}

/* ── Table ─────────────────────────────────────────────────────── */

.table-wrap {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow-x: auto;
    transition: border-color var(--transition);
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--surface);
    transition: background-color var(--transition);
}

thead th {
    padding: 9px 12px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted);
    background-color: var(--surface-alt);
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background-color var(--transition);
}

tbody tr:last-child { border-bottom: none; }

tbody tr:hover { background-color: var(--surface-alt); }

tbody td {
    padding: 10px 12px;
    font-size: 14px;
    color: var(--text);
    vertical-align: middle;
    transition: color var(--transition);
}

.amount-deposit   { color: var(--success); font-weight: 600; }
.amount-withdrawal { color: var(--danger);  font-weight: 600; }

.tag {
    display: inline-block;
    padding: 1px 8px;
    border-radius: var(--radius);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.tag-deposit {
    background-color: var(--success-bg);
    color: var(--success);
}

.tag-withdrawal {
    background-color: var(--danger-bg);
    color: var(--danger);
}

.account-tag {
    display: inline-block;
    padding: 1px 8px;
    border-radius: var(--radius);
    font-size: 11px;
    font-weight: 600;
    background-color: #eff6ff;
    color: #1d4ed8;
    transition: background-color var(--transition);
}

.account-tag.checking {
    background-color: #f5f3ff;
    color: #7c3aed;
}

[data-theme="dark"] .account-tag         { background-color: #1e3a5f; color: #93c5fd; }
[data-theme="dark"] .account-tag.checking { background-color: #2d1f4f; color: #c4b5fd; }
[data-theme="dark"] .tag-deposit          { background-color: #14532d; color: #86efac; }
[data-theme="dark"] .tag-withdrawal       { background-color: #450a0a; color: #fca5a5; }

/* ── Login page ────────────────────────────────────────────────── */

.login-page-content {
    padding: 32px 0;
}

.login-container {
    width: 320px;
    margin: 0 auto;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 28px;
    text-align: center;
    transition: background-color var(--transition), border-color var(--transition);
}

.login-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text);
    margin: 0 0 20px;
    font-size: 18px;
    font-weight: 600;
    transition: color var(--transition);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
}

.login-form label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition);
}

.login-form input[type="text"],
.login-form input[type="password"] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--surface-alt);
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition), background-color var(--transition), color var(--transition);
}

.login-form input[type="text"]:focus,
.login-form input[type="password"]:focus {
    border-color: var(--primary);
}

.login-form input[type="text"]::placeholder,
.login-form input[type="password"]::placeholder {
    color: var(--text-dim);
}

.btn-login {
    width: 100%;
    padding: 9px;
    margin-top: 4px;
    background-color: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color var(--transition);
}

.btn-login:hover  { background-color: var(--primary-hover); }
.btn-login:disabled { opacity: 0.6; cursor: not-allowed; }

.error-message {
    color: var(--danger);
    font-size: 13px;
    margin-top: 10px;
    display: none;
}
.error-message.visible { display: block; }

/* ── Admin picker ──────────────────────────────────────────────── */

.picker-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 24px;
    transition: background-color var(--transition), border-color var(--transition);
}

.picker-card h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 14px;
    transition: color var(--transition);
}

.picker-row {
    display: grid;
    grid-template-columns: 1fr auto 160px auto;
    gap: 4px 10px;
    align-items: end;
}

.picker-row-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition);
}

.picker-row select,
.picker-row input[type="text"] {
    width: 100%;
    height: 36px;
    padding: 0 10px;
    box-sizing: border-box;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text);
    background-color: var(--surface-alt);
    outline: none;
    transition: border-color var(--transition), background-color var(--transition), color var(--transition);
}

.picker-row select {
    appearance: none;
    -webkit-appearance: none;
    padding-right: 28px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236b7280'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
}

.picker-row select:focus,
.picker-row input[type="text"]:focus {
    border-color: var(--primary);
}

.picker-row .btn {
    align-self: stretch;
}

.picker-divider {
    color: var(--text-dim);
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    align-self: center;
    transition: color var(--transition);
}

/* ── Empty / skeleton states ───────────────────────────────────── */

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    transition: color var(--transition);
}

.empty-state .icon { font-size: 32px; margin-bottom: 8px; }
.empty-state p     { font-size: 14px; }

.skeleton {
    background: linear-gradient(90deg, var(--surface-alt) 25%, var(--border) 50%, var(--surface-alt) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.4s infinite;
    border-radius: var(--radius);
    height: 16px;
}

@keyframes shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Utilities ─────────────────────────────────────────────────── */

.mb-2 { margin-bottom: 12px; }
.mb-3 { margin-bottom: 24px; }
.mt-1 { margin-top: 6px;  }
.mt-2 { margin-top: 12px; }
.text-muted { color: var(--text-muted); font-size: 13px; transition: color var(--transition); }
.hidden { display: none !important; }

/* ── Avatar + Dropdown ─────────────────────────────────────────── */

.avatar-wrap {
    position: relative;
}

.avatar-btn {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    height: 32px;
    padding: 0 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

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

.avatar-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 210px;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 4px 16px rgba(0,0,0,.10);
    z-index: 200;
    overflow: hidden;
    transition: background-color var(--transition), border-color var(--transition);
}

.avatar-dropdown.open { display: block; }

.avatar-dropdown-header {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    transition: border-color var(--transition);
}

.avatar-dropdown-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    transition: color var(--transition);
}

.avatar-dropdown-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
    font-family: ui-monospace, 'SF Mono', 'Cascadia Code', monospace;
    transition: color var(--transition);
}

.avatar-dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    transition: background-color var(--transition), color var(--transition);
}

.avatar-dropdown-item:hover { background-color: var(--surface-alt); }
.avatar-dropdown-item.danger { color: var(--danger); }
.avatar-dropdown-item.danger:hover { background-color: var(--danger-bg); }

/* ── Profile Modal ─────────────────────────────────────────────── */

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 500;
    cursor: pointer;
}

.modal-overlay.open { display: block; }

.modal {
    position: fixed;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(400px, calc(100vw - 32px));
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    z-index: 501;
    overflow: hidden;
    cursor: default;
    transition: background-color var(--transition), border-color var(--transition);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    transition: border-color var(--transition);
}

.modal-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    transition: color var(--transition);
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1;
    padding: 2px 4px;
    border-radius: var(--radius);
    transition: background-color var(--transition), color var(--transition);
}

.modal-close:hover { background-color: var(--surface-alt); color: var(--text); }

.modal-body {
    padding: 16px;
}

.modal-body .info-grid {
    gap: 14px;
}

/* ── Mobile ────────────────────────────────────────────────────── */

@media (max-width: 768px) {
    .site-header {
        grid-template-columns: 1fr auto auto;
        gap: 8px;
    }

    .header-nav {
        display: none;
    }

    .nav-user {
        display: none;
    }

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

    .picker-row {
        flex-direction: column;
        align-items: stretch;
    }

    .picker-divider {
        text-align: center;
        padding: 0;
    }

    .filter-bar {
        width: 100%;
    }

    .login-container {
        width: calc(100vw - 32px);
        max-width: 320px;
    }

    .login-form input[type="text"],
    .login-form input[type="password"] {
        font-size: 16px;
    }
}