:root {
    --gray-50: #f7f7f8;
    --gray-100: #f0f0f1;
    --gray-150: #e9e9eb;
    --gray-200: #e2e2e5;
    --gray-300: #cfd0d4;
    --gray-400: #a6a8b0;
    --gray-500: #83858e;
    --gray-600: #62636b;
    --gray-700: #46474d;
    --gray-800: #303136;
    --gray-900: #1e1f22;
    --accent: #4b5566;
    --accent-dark: #363d47;
    --danger: #b3462c;
    --success: #2f8f5b;
    --font-sans: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--gray-800);
    background: var(--gray-100);
    -webkit-font-smoothing: antialiased;
}

body {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Topbar */
.topbar {
    height: 42px;
    flex: 0 0 auto;
    background: var(--gray-900);
    color: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 14px;
    font-size: 13px;
    font-weight: 600;
    z-index: 500;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 6px;
    letter-spacing: 0.2px;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 400;
    color: var(--gray-300);
}

.topbar-logout {
    background: transparent;
    border: none;
    color: var(--gray-300);
    cursor: pointer;
    font-size: 14px;
    padding: 4px 6px;
    border-radius: 4px;
}

.topbar-logout:hover {
    background: var(--gray-700);
    color: #fff;
}

/* Topbar user dropdown */
.topbar-user-dropdown {
    position: relative;
}

.topbar-username-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: none;
    color: var(--gray-300);
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 400;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
}

.topbar-username-btn:hover,
.topbar-username-btn.open {
    background: var(--gray-700);
    color: #fff;
}

.topbar-username-caret {
    font-size: 9px;
    color: var(--gray-500);
}

.topbar-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 220px;
    background: #fff;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(30, 31, 34, 0.2);
    padding: 6px;
    z-index: 2000;
}

.topbar-dropdown-info {
    padding: 6px 8px 8px;
}

.topbar-dropdown-company {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--gray-800);
}

.topbar-dropdown-period {
    font-size: 11.5px;
    color: var(--gray-500);
    margin-top: 2px;
}

.topbar-dropdown-separator {
    height: 1px;
    background: var(--gray-200);
    margin: 4px 2px;
}

.topbar-dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    padding: 7px 8px;
    border-radius: 4px;
    font-size: 12.5px;
    font-family: var(--font-sans);
    color: var(--gray-700);
    cursor: pointer;
}

.topbar-dropdown-item i {
    width: 14px;
    text-align: center;
    color: var(--gray-500);
}

.topbar-dropdown-item:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.topbar-dropdown-item.update-available {
    color: var(--success);
    font-weight: 600;
}

.topbar-dropdown-item.update-available i {
    color: var(--success);
}

.topbar-dropdown-item.update-available:hover {
    background: rgba(47, 143, 91, 0.1);
    color: var(--success);
}

/* Period chooser overlay */
.period-chooser-overlay {
    position: fixed;
    inset: 0;
    background: rgba(30, 31, 34, 0.35);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 5500;
}

.period-chooser {
    width: 320px;
    max-height: 70vh;
    background: #fff;
    border-radius: 6px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.period-chooser-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-200);
    font-size: 12.5px;
    font-weight: 700;
    color: var(--gray-800);
}

.period-chooser-header button {
    border: none;
    background: transparent;
    color: var(--gray-500);
    cursor: pointer;
}

.period-chooser-list {
    overflow-y: auto;
    padding: 6px;
}

.period-chooser-item {
    display: flex;
    flex-direction: column;
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    padding: 8px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-sans);
}

.period-chooser-item:hover {
    background: var(--gray-100);
}

.period-chooser-item.active {
    background: var(--accent);
}

.period-chooser-item.active .period-chooser-item-no,
.period-chooser-item.active .period-chooser-item-dates {
    color: #fff;
}

.period-chooser-item-no {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--gray-800);
}

.period-chooser-item-dates {
    font-size: 11.5px;
    color: var(--gray-500);
}

.period-chooser-empty {
    padding: 16px;
    text-align: center;
    color: var(--gray-500);
    font-size: 12.5px;
}

/* Body / shell */
.body-content-wrapper {
    position: relative;
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
}

.body-content {
    flex: 1 1 auto;
    min-height: 0;
    min-width: 0;
}

.screen-loading-overlay {
    position: absolute;
    inset: 0;
    z-index: 4000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(240, 240, 241, 0.75);
}

.screen-loading-overlay i {
    font-size: 28px;
    color: var(--accent);
}

.app-shell {
    display: flex;
    height: 100%;
}

/* Sidebar */
.sidebar {
    width: 260px;
    flex: 0 0 260px;
    background: var(--gray-50);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.sidebar-header {
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-200);
}

.company-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.company-name {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--gray-800);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.company-period {
    font-size: 11.5px;
    font-weight: 400;
    color: var(--gray-500);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-search {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 10px;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-500);
}

.sidebar-search input {
    flex: 1;
    border: 1px solid var(--gray-200);
    background: #fff;
    border-radius: 4px;
    padding: 5px 8px;
    font-size: 12.5px;
    font-family: var(--font-sans);
    color: var(--gray-800);
    outline: none;
}

.sidebar-search input:focus {
    border-color: var(--accent);
}

.menu-tree {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 6px 4px 20px;
}

.menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.menu-list .menu-list {
    padding-left: 14px;
}

.menu-item {
    margin: 1px 0;
}

.menu-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    border-radius: 4px;
    cursor: pointer;
    color: var(--gray-700);
    font-size: 12.5px;
    line-height: 1.3;
    user-select: none;
}

.menu-row:hover {
    background: var(--gray-150);
    color: var(--gray-900);
}

.menu-caret {
    font-size: 10px;
    width: 10px;
    flex: 0 0 auto;
    color: var(--gray-400);
    transition: transform 0.12s ease;
}

.menu-caret-spacer {
    width: 10px;
    flex: 0 0 auto;
}

.menu-item.open > .menu-row > .menu-caret {
    transform: rotate(90deg);
}

.menu-icon {
    font-size: 13px;
    color: var(--gray-500);
    flex: 0 0 auto;
    width: 15px;
    text-align: center;
}

.menu-title {
    flex: 1 1 auto;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.menu-item[data-leaf="true"] > .menu-row:hover {
    background: var(--accent);
    color: #fff;
}

.menu-item[data-leaf="true"] > .menu-row:hover .menu-icon {
    color: #fff;
}

.menu-children {
    display: none;
}

.menu-item.open > .menu-children,
.menu-item.search-open > .menu-children {
    display: block;
}

/* Desktop / windows */
.desktop {
    position: relative;
    flex: 1 1 auto;
    background: var(--gray-200);
    background-image:
        linear-gradient(var(--gray-150) 1px, transparent 1px),
        linear-gradient(90deg, var(--gray-150) 1px, transparent 1px);
    background-size: 24px 24px;
    overflow: hidden;
}

.desktop-content {
    position: absolute;
    inset: 0;
    overflow: auto;
    background: #ffffff;
    z-index: 0;
}

.app-window {
    position: absolute;
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(30, 31, 34, 0.12);
    min-width: 360px;
    min-height: 240px;
    overflow: hidden;
}

.app-window.active {
    border-color: var(--gray-500);
    box-shadow: 0 6px 20px rgba(30, 31, 34, 0.2);
}

.app-window.minimized {
    display: none;
}

.app-window.maximized {
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    border-radius: 0;
}

.window-titlebar {
    flex: 0 0 auto;
    height: 34px;
    background: var(--gray-100);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 8px 0 12px;
    cursor: move;
}

.app-window.active .window-titlebar {
    background: var(--gray-800);
    border-bottom-color: var(--gray-900);
}

.window-title {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.app-window.active .window-title {
    color: var(--gray-50);
}

.window-controls {
    display: flex;
    gap: 2px;
    flex: 0 0 auto;
}

.window-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--gray-500);
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-window.active .window-btn {
    color: var(--gray-300);
}

.window-btn:hover {
    background: var(--gray-300);
    color: var(--gray-900);
}

.window-close:hover {
    background: var(--danger);
    color: #fff;
}

.window-body {
    flex: 1 1 auto;
    overflow: auto;
    background: #fff;
}

/* Pencere içi arama (Ctrl+F) */
.window-search-box {
    position: absolute;
    top: 40px;
    right: 10px;
    z-index: 50;
    display: none;
    align-items: center;
    gap: 6px;
    background: #fff;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    box-shadow: 0 4px 14px rgba(30, 31, 34, 0.18);
    padding: 6px 8px;
}

.window-search-box.open {
    display: flex;
}

.window-search-box i.bi-search {
    color: var(--gray-500);
    font-size: 12px;
}

.window-search-box input {
    border: none;
    outline: none;
    font-size: 12.5px;
    font-family: var(--font-sans);
    color: var(--gray-800);
    width: 180px;
}

.window-search-box .window-search-close,
.window-search-box .window-search-submit {
    border: none;
    background: transparent;
    color: var(--gray-500);
    cursor: pointer;
    display: flex;
}

.window-search-box .window-search-submit:hover {
    color: var(--accent);
}

.window-resize-handle {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 14px;
    height: 14px;
    cursor: se-resize;
}

.window-resize-handle::after {
    content: "";
    position: absolute;
    right: 3px;
    bottom: 3px;
    width: 7px;
    height: 7px;
    border-right: 2px solid var(--gray-400);
    border-bottom: 2px solid var(--gray-400);
}

/* Taskbar */
.footer-bar {
    flex: 0 0 auto;
    height: 30px;
    background: var(--gray-900);
    border-top: 1px solid var(--gray-800);
    display: flex;
    align-items: center;
}

.taskbar {
    flex: 1 1 auto;
    min-width: 0;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 8px;
    overflow-x: auto;
}

.taskbar-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--gray-800);
    color: var(--gray-300);
    border: 1px solid var(--gray-700);
    border-radius: 4px;
    padding: 3px 10px;
    font-size: 12px;
    font-family: var(--font-sans);
    cursor: pointer;
    white-space: nowrap;
}

.taskbar-chip:hover {
    background: var(--gray-700);
    color: #fff;
}

.taskbar-chip.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.taskbar-version {
    flex: 0 0 auto;
    padding-right: 10px;
    color: var(--gray-500);
    font-size: 11px;
    font-family: var(--font-sans);
    white-space: nowrap;
    user-select: none;
}

/* Buttons */
.btn-gray {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 6px 12px;
    font-size: 12.5px;
    font-family: var(--font-sans);
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

/* Dashboard */
.dashboard-content {
    padding: 16px;
}

.dashboard-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.dashboard-toolbar h2 {
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0;
}

.shortcut-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 10px;
}

.shortcut-empty {
    grid-column: 1 / -1;
    color: var(--gray-500);
    font-size: 12.5px;
}

.shortcut-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    padding: 16px 10px;
    cursor: pointer;
    text-align: center;
}

.shortcut-card:hover {
    background: #fff;
    border-color: var(--accent);
}

.shortcut-icon {
    font-size: 22px;
    color: var(--accent);
}

.shortcut-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-700);
}

/* Shortcut picker */
.shortcut-picker-overlay {
    position: fixed;
    inset: 0;
    background: rgba(30, 31, 34, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.shortcut-picker {
    width: 360px;
    max-height: 70vh;
    background: #fff;
    border-radius: 6px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.shortcut-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-200);
    font-size: 12.5px;
    font-weight: 700;
    color: var(--gray-800);
}

.shortcut-picker-header button {
    border: none;
    background: transparent;
    color: var(--gray-500);
    cursor: pointer;
}

.shortcut-picker-search {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 8px 12px;
    padding: 5px 8px;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    color: var(--gray-500);
}

.shortcut-picker-search input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 12.5px;
    font-family: var(--font-sans);
    color: var(--gray-800);
}

.shortcut-picker-tree {
    overflow-y: auto;
    padding: 4px 6px 10px;
    max-height: 50vh;
}

.picker-menu-item[data-leaf="true"] > .picker-menu-row:hover {
    background: var(--accent);
    color: #fff;
}

.picker-menu-item[data-leaf="true"] > .picker-menu-row:hover .menu-icon {
    color: #fff;
}

/* Placeholder content */
.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 8px;
    color: var(--gray-500);
    padding: 20px;
    text-align: center;
}

.placeholder-icon {
    font-size: 34px;
    color: var(--gray-300);
}

.placeholder-content h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-700);
    margin: 0;
}

.placeholder-content p {
    font-size: 12.5px;
    margin: 0;
}

/* Login */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    background: var(--gray-200);
}

.login-card {
    width: 320px;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(30, 31, 34, 0.12);
    padding: 26px 24px;
}

.login-logo {
    font-size: 15px;
    font-weight: 700;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 14px;
}

.login-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin: 0 0 16px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.login-form label {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-600);
    margin-top: 8px;
}

.login-form input {
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    padding: 7px 9px;
    font-size: 13px;
    font-family: var(--font-sans);
    outline: none;
}

.login-form input:focus {
    border-color: var(--accent);
}

.login-submit {
    margin-top: 16px;
    justify-content: center;
}

.login-error {
    color: var(--danger);
    font-size: 12px;
}

.field-error {
    color: var(--danger);
    font-size: 11px;
}

/* Data table (Firmalar, Dönemler) */
.companies-content,
.company-periods {
    padding: 16px;
}

/* Pencere başlığı zaten window titlebar'da göründüğünden, liste
   sayfalarındaki toolbar'da sadece aksiyon butonu kalır ve sağa yaslanır. */
.companies-content > .dashboard-toolbar {
    justify-content: flex-end;
}

/* Malzemeler / Birim Setleri / Ödeme Planları listesi: sabit başlık, altında
   kayan tablo, en altta sabit footer (bkz. .material-form). Başlık, kayan
   gövdeden ayrı bir tabloda tutulur ki position:sticky yerine gerçekten hiç
   kaymayan bir başlık olsun. İki tablo da aynı colgroup genişliklerini ve
   table-layout:fixed'i kullanır ki sütunlar hizalı kalsın; data-table-scroll'daki
   scrollbar-gutter de bu hizayı bozacak kaydırma çubuğu genişliğini telafi eder. */
.materials-content,
.unit-sets-content,
.payment-plans-content,
.current-accounts-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.materials-content .data-table,
.unit-sets-content .data-table,
.payment-plans-content .data-table,
.current-accounts-content .data-table {
    table-layout: fixed;
}

/* Pencere daraltılıp sütun genişliği yetmediğinde satır 2. satıra taşmasın,
   metin "..." ile kesilsin; pencere büyütülünce hücre tekrar sığdığı için
   otomatik olarak normale döner (ekstra bir JS/resize dinleyicisine gerek yok). */
.materials-content .data-table td,
.current-accounts-content .data-table td {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.data-table-header-wrap {
    flex: 0 0 auto;
    padding: 16px 16px 0;
    overflow: auto;
    scrollbar-gutter: stable;
}

.data-table-header-wrap table {
    margin-bottom: 0;
}

.data-table-scroll {
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    scrollbar-gutter: stable;
    padding: 0 16px;
}

.selectable-table tbody tr[data-material-id],
.selectable-table tbody tr[data-unit-set-id],
.selectable-table tbody tr[data-plan-id] {
    cursor: pointer;
}

.selectable-table tbody tr.row-selected {
    background: var(--gray-200);
}

.selectable-table tbody tr.row-selected:hover {
    background: var(--gray-200);
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 12.5px;
}

.data-table thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    text-align: left;
    padding: 0;
    box-shadow: inset 0 -1px 0 var(--gray-200);
    background: #fff;
    color: var(--gray-600);
    font-weight: 600;
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.col-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4px;
    padding: 8px 6px 8px 10px;
}

.data-table thead th[data-sort-key] .col-header-label {
    cursor: pointer;
    user-select: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1 1 auto;
}

.data-table thead th[data-sort-key] .col-header-label:hover {
    color: var(--gray-800);
}

.col-header-label .sort-indicator {
    font-size: 10px;
    color: var(--accent);
}

.col-filter-btn {
    flex: 0 0 auto;
    border: none;
    background: transparent;
    color: var(--gray-400);
    padding: 2px 4px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 11px;
    line-height: 1;
}

.col-filter-btn:hover {
    background: var(--gray-150);
    color: var(--gray-700);
}

.col-filter-btn.active {
    color: var(--accent);
}

.column-filter-popover {
    position: fixed;
    z-index: 200;
    display: none;
    min-width: 200px;
    max-width: 280px;
    background: #fff;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    box-shadow: 0 6px 20px rgba(30, 31, 34, 0.2);
    font-size: 12.5px;
    text-transform: none;
    letter-spacing: normal;
    font-weight: 400;
}

.column-filter-popover.open {
    display: flex;
    flex-direction: column;
}

.column-filter-actions {
    display: flex;
    justify-content: space-between;
    gap: 6px;
    padding: 8px 10px;
    border-bottom: 1px solid var(--gray-150);
}

.column-filter-actions button {
    border: none;
    background: transparent;
    color: var(--accent);
    cursor: pointer;
    font-size: 12px;
    padding: 0;
}

.column-filter-actions button:hover {
    text-decoration: underline;
}

.column-filter-list {
    max-height: 220px;
    overflow: auto;
    padding: 4px 0;
}

.column-filter-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    color: var(--gray-800);
    cursor: pointer;
}

.column-filter-item:hover {
    background: var(--gray-50);
}

.column-filter-item input {
    margin: 0;
}

.column-filter-date-range {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 10px;
}

.column-filter-date-range label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
    color: var(--gray-600);
}

.column-filter-date-range input {
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    padding: 5px 7px;
    font-size: 12.5px;
    font-family: var(--font-sans);
    color: var(--gray-800);
}

.column-filter-actions button[data-action="apply"] {
    font-weight: 600;
}

.column-filter-empty {
    padding: 10px;
    color: var(--gray-500);
    text-align: center;
}

.data-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--gray-150);
    color: var(--gray-800);
}

.data-table tbody tr:hover {
    background: var(--gray-50);
}

.data-table-empty {
    color: var(--gray-500);
    text-align: center;
    padding: 20px !important;
}

.data-table-loading {
    color: var(--gray-500);
    text-align: center;
    padding: 12px !important;
}

.data-table-loading i {
    margin-right: 6px;
    color: var(--accent);
}

.data-table-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 8px 12px;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    background: #fff;
    color: var(--gray-700);
    cursor: pointer;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--gray-100);
}

.pagination-btn:disabled {
    color: var(--gray-300);
    cursor: not-allowed;
}

.pagination-info {
    color: var(--gray-600);
    font-size: 13px;
}

.pagination-total-count {
    color: var(--gray-400);
}

/* Company form */
.company-form,
.material-form,
.current-account-form,
.unit-set-form,
.payment-plan-form,
.ledger-account-form {
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.form-loading-overlay {
    position: absolute;
    inset: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #fff;
    color: var(--gray-600);
    font-size: 13px;
    font-weight: 600;
}

.form-loading-overlay i {
    font-size: 16px;
    color: var(--accent);
}

.company-form-header {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 14px 16px 0;
    flex: 0 0 auto;
}

.company-form-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    padding: 10px 16px;
    border-top: 1px solid var(--gray-200);
    flex: 0 0 auto;
    margin-top: auto;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.form-field-grow {
    flex: 1 1 auto;
}

.form-field label {
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-600);
}

.form-field input,
.form-field select,
.form-field textarea {
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    padding: 6px 8px;
    font-size: 12.5px;
    font-family: var(--font-sans);
    color: var(--gray-800);
    outline: none;
    background: #fff;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    border-color: var(--accent);
}

.form-field input[readonly] {
    background: var(--gray-100);
    color: var(--gray-600);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
    padding: 14px 16px;
}

.form-fieldset {
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    margin: 14px 16px;
    padding: 4px 8px 8px;
}

.form-fieldset legend {
    font-size: 11.5px;
    font-weight: 700;
    color: var(--gray-700);
    padding: 0 6px;
}

.working-days {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 4px;
}

.working-days label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    font-weight: 400;
    color: var(--gray-700);
}

/* Tabs */
.tabs {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
    margin-top: 12px;
}

.tab-buttons {
    display: flex;
    gap: 2px;
    padding: 0 16px;
    border-bottom: 1px solid var(--gray-200);
    flex: 0 0 auto;
}

.tab-btn {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 8px 10px;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-sans);
    color: var(--gray-500);
    cursor: pointer;
}

.tab-btn:hover {
    color: var(--gray-800);
}

.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-panel {
    display: none;
    flex: 1 1 auto;
    overflow: auto;
}

.tab-panel.active {
    display: block;
}

/* Period form overlay */
.period-form-overlay {
    position: fixed;
    inset: 0;
    background: rgba(30, 31, 34, 0.35);
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.period-form {
    width: 320px;
    background: #fff;
    border-radius: 6px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.period-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 6px;
}

/* Panel / company choice screens */
.choice-screen {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 40px 20px;
    background: var(--gray-100);
    overflow: auto;
}

.choice-back-btn {
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    padding: 6px 10px;
    font-size: 12px;
    font-family: var(--font-sans);
    color: var(--gray-600);
    cursor: pointer;
    position: absolute;
    top: 16px;
    left: 16px;
}

.choice-back-btn:hover {
    background: var(--gray-150);
    color: var(--gray-900);
}

.choice-screen {
    position: relative;
}

.choice-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0;
}

.choice-empty {
    color: var(--gray-500);
    font-size: 13px;
}

.choice-cards {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.choice-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 220px;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 28px 18px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(30, 31, 34, 0.06);
    font-family: var(--font-sans);
}

.choice-card:hover {
    border-color: var(--accent);
    box-shadow: 0 6px 20px rgba(30, 31, 34, 0.12);
}

.choice-card-icon {
    font-size: 30px;
    color: var(--accent);
}

.choice-card-title {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--gray-800);
}

.choice-card-desc {
    font-size: 11.5px;
    color: var(--gray-500);
    text-align: center;
}

.company-choice-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 360px;
    max-width: 90vw;
}

.company-choice-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    padding: 12px 14px;
    cursor: pointer;
    font-family: var(--font-sans);
    color: var(--gray-800);
    text-align: left;
}

.company-choice-item:hover {
    border-color: var(--accent);
    background: var(--gray-50);
}

.company-choice-item i {
    font-size: 16px;
    color: var(--accent);
}

.company-choice-item-title {
    font-size: 12.5px;
    font-weight: 600;
}

/* Message box */
.message-box-overlay {
    position: fixed;
    inset: 0;
    background: rgba(30, 31, 34, 0.4);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 6000;
}

.message-box {
    width: 320px;
    max-width: 90vw;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
    padding: 22px 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 6px;
}

.message-box-icon {
    font-size: 30px;
    margin-bottom: 4px;
}

.message-box-icon.info { color: var(--accent); }
.message-box-icon.success { color: #2f7d4f; }
.message-box-icon.error { color: var(--danger); }

.message-box-title {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--gray-800);
}

.message-box-text {
    font-size: 12.5px;
    color: var(--gray-600);
    line-height: 1.5;
}

.message-box-actions {
    margin-top: 12px;
}

/* Confirm dialog (Evet/Hayır) */
.confirm-dialog-overlay {
    position: fixed;
    inset: 0;
    background: rgba(30, 31, 34, 0.4);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 6000;
}

.confirm-dialog {
    width: 340px;
    max-width: 90vw;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
    padding: 22px 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 6px;
}

.confirm-dialog-icon {
    font-size: 30px;
    margin-bottom: 4px;
    color: var(--danger);
}

.confirm-dialog-title {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--gray-800);
}

.confirm-dialog-text {
    font-size: 12.5px;
    color: var(--gray-600);
    line-height: 1.5;
}

.confirm-dialog-actions {
    margin-top: 12px;
    display: flex;
    gap: 8px;
}

.confirm-dialog-cancel {
    background: var(--gray-200);
    color: var(--gray-800);
}

.confirm-dialog-cancel:hover {
    background: var(--gray-300);
}

.confirm-dialog-confirm.danger {
    background: var(--danger);
}

.confirm-dialog-confirm.danger:hover {
    background: #932f1c;
}

/* Loading spinner */
.spin {
    display: inline-block;
    animation: modulekserp-spin 0.8s linear infinite;
}

@keyframes modulekserp-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.btn-gray[disabled] {
    opacity: 0.7;
    cursor: default;
}

/* Kod seçim/tanımlama alanı (textbox + "..." buton) */
.input-with-picker {
    display: flex;
    gap: 4px;
}

.input-with-picker input {
    flex: 1 1 auto;
    min-width: 0;
}

.picker-trigger-btn {
    flex: 0 0 auto;
    width: 28px;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    color: var(--gray-600);
    cursor: pointer;
    font-weight: 700;
    font-size: 12px;
}

.picker-trigger-btn:hover {
    background: var(--gray-150);
    color: var(--gray-900);
}

/* Kod seçici overlay */
.code-picker-overlay {
    position: fixed;
    inset: 0;
    background: rgba(30, 31, 34, 0.35);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 6000;
}

.code-picker {
    width: 360px;
    max-height: 70vh;
    background: #fff;
    border-radius: 6px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.code-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-200);
    font-size: 12.5px;
    font-weight: 700;
    color: var(--gray-800);
}

.code-picker-header button {
    border: none;
    background: transparent;
    color: var(--gray-500);
    cursor: pointer;
}

.code-picker-search {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 8px 12px;
    padding: 5px 8px;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    color: var(--gray-500);
}

.code-picker-search input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 12.5px;
    font-family: var(--font-sans);
    color: var(--gray-800);
}

.code-picker-list {
    overflow-y: auto;
    max-height: 40vh;
    padding: 4px 6px;
    display: flex;
    flex-direction: column;
}

.code-picker-item {
    text-align: left;
    background: transparent;
    border: none;
    border-radius: 4px;
    padding: 7px 8px;
    font-size: 12.5px;
    font-family: var(--font-sans);
    color: var(--gray-800);
    cursor: pointer;
}

.code-picker-item:hover {
    background: var(--accent);
    color: #fff;
}

.code-picker-empty {
    color: var(--gray-500);
    font-size: 12.5px;
    padding: 14px;
    text-align: center;
}

.code-picker-create {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px 12px;
    border-top: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.code-picker-create-fields {
    display: flex;
    gap: 6px;
}

.code-picker-create-fields input {
    min-width: 0;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    padding: 6px 8px;
    font-size: 12.5px;
    font-family: var(--font-sans);
    outline: none;
}

.code-picker-create-fields .code-picker-new-code {
    flex: 0 0 90px;
}

.code-picker-create-fields .code-picker-new-description {
    flex: 1 1 auto;
}

.code-picker-create-fields input:focus {
    border-color: var(--accent);
}

/* Hesap Planı (ağaç görünümü): Malzemeler'deki gibi sabit başlık + kayan
   gövde + en altta sabit footer çerçevesi kullanır; içerik ağaç yapısında
   kaldığı için tablo değil nested div'lerle render edilir. */
.ledger-accounts-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.account-tree-header {
    display: flex;
    flex: 0 0 auto;
    padding: 8px 10px;
    margin: 16px 16px 0;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-600);
    font-weight: 600;
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.account-tree-header-code {
    width: 110px;
    flex: 0 0 auto;
}

.account-tree-header-desc {
    flex: 1 1 auto;
}

.account-tree-header-balance {
    width: 110px;
    flex: 0 0 auto;
    text-align: right;
}

.account-tree {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    scrollbar-gutter: stable;
    padding: 0 16px;
    font-size: 12.5px;
}

.account-tree-node.collapsed > .account-tree-children {
    display: none;
}

.account-tree-node.row-selected > .account-tree-row {
    background: var(--gray-200);
}

.account-tree-node.row-selected > .account-tree-row:hover {
    background: var(--gray-200);
}

.account-tree-row {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    border-bottom: 1px solid var(--gray-150);
    cursor: pointer;
}

.account-tree-row:hover {
    background: var(--gray-50);
}

.account-tree-toggle,
.account-picker-toggle {
    border: none;
    background: transparent;
    color: var(--gray-500);
    cursor: pointer;
    width: 18px;
    flex: 0 0 auto;
}

.account-tree-toggle-spacer {
    display: inline-block;
    width: 18px;
    flex: 0 0 auto;
}

.account-tree-code {
    width: 110px;
    flex: 0 0 auto;
    font-weight: 600;
    color: var(--gray-800);
}

.account-tree-desc {
    flex: 1 1 auto;
    color: var(--gray-700);
}

.account-tree-balance {
    width: 110px;
    flex: 0 0 auto;
    text-align: right;
    color: var(--gray-600);
}

/* Hesap Planı seçim modu (Malzemeler gibi diğer modüllerden açıldığında) */
[data-picker-mode="true"] .account-tree-row {
    cursor: pointer;
}

[data-picker-mode="true"] .account-tree-row:hover {
    background: var(--accent);
    color: #fff;
}

[data-picker-mode="true"] .account-tree-row:hover .account-tree-code,
[data-picker-mode="true"] .account-tree-row:hover .account-tree-desc,
[data-picker-mode="true"] .account-tree-row:hover .account-tree-balance {
    color: #fff;
}

/* Düzenlenebilir satır tabloları (Birim Setleri, Ödeme Planı işlemleri, Fiyatlar) */
.rows-table-wrapper {
    padding: 14px 16px;
}

.rows-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12.5px;
    margin-bottom: 8px;
}

.rows-table th {
    text-align: left;
    padding: 6px 6px;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-600);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.rows-table td {
    padding: 4px 6px;
    border-bottom: 1px solid var(--gray-150);
    vertical-align: middle;
}

.rows-table-center {
    text-align: center;
}

.rows-table input,
.rows-table select {
    width: 100%;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    padding: 5px 7px;
    font-size: 12.5px;
    font-family: var(--font-sans);
    outline: none;
    background: #fff;
}

.rows-table input:focus,
.rows-table select:focus {
    border-color: var(--accent);
}

.rows-table input:disabled {
    background: var(--gray-100);
    color: var(--gray-600);
}

.row-remove-btn {
    border: none;
    background: transparent;
    color: var(--danger);
    cursor: pointer;
    padding: 4px 6px;
}

.row-remove-btn:hover {
    color: #7a2e1c;
}

.add-row-btn {
    margin-top: 4px;
}

/* Malzeme formu */
.material-form-top {
    display: flex;
    gap: 16px;
    padding: 14px 16px 0;
    flex: 0 0 auto;
}

.material-form-fields {
    flex: 1 1 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.material-form-fields .company-form-header {
    padding: 0;
}

.material-image-field {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    flex: 0 0 auto;
}

.material-image-field label {
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-600);
}

.material-image-preview {
    width: 56px;
    height: 56px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: var(--gray-400);
    font-size: 20px;
    background: var(--gray-50);
}

.material-image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lot-options {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.lot-options label {
    font-size: 12px;
    font-weight: 400;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Context menu */
.context-menu {
    position: fixed;
    z-index: 5000;
    min-width: 180px;
    background: #fff;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(30, 31, 34, 0.18);
    padding: 4px;
}

.context-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    padding: 7px 10px;
    border-radius: 4px;
    font-size: 12.5px;
    font-family: var(--font-sans);
    color: var(--gray-700);
    cursor: pointer;
}

.context-menu-item i {
    width: 14px;
    text-align: center;
    color: var(--gray-500);
}

.context-menu-item:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.context-menu-item.danger {
    color: var(--danger);
}

.context-menu-item.danger i {
    color: var(--danger);
}

.context-menu-item.danger:hover {
    background: var(--danger);
    color: #fff;
}

.context-menu-item.danger:hover i {
    color: #fff;
}

.context-menu-separator {
    height: 1px;
    background: var(--gray-200);
    margin: 4px 2px;
}