:root {
    --primary: #f7941d;
    --white: #ffffff;
    --dark-bg: #0a0a0a;
    --dark-secondary: #141414;
    --dark-tertiary: #1a1a1a;
    --dark-border: #2a2a2a;
    --text-muted: #888888;
}

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

html {
    background-color: var(--dark-bg);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--white);
    min-height: 100vh;
    margin: 0;
}

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

a:hover {
    color: #ffb045;
    text-decoration: underline;
}

header {
    background: linear-gradient(180deg, var(--dark-secondary) 0%, var(--dark-bg) 100%);
    border-bottom: 1px solid var(--dark-border);
    padding: 10px 40px 10px 65px;
    min-height: 70px;
}

.header-content {
    display: flex;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-container img {
    height: 50px;
    width: auto;
    vertical-align: middle;
}

nav {
    margin-left: 50px;
    border-bottom: none;
}

.nav-content {
    display: flex;
    gap: 0;
}

.nav-tab {
    padding: 18px 30px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.nav-tab:hover {
    color: var(--white);
    background: var(--dark-tertiary);
}

.nav-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.header-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-menu {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--dark-tertiary);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    color: var(--white);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.user-btn:hover {
    border-color: var(--primary);
}

.user-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    min-width: 200px;
    z-index: 100;
    margin-top: 0;
}

.user-menu:hover .user-dropdown {
    display: block;
}

.user-dropdown a {
    display: block;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.3s ease;
}

.user-dropdown a:hover {
    background: var(--primary);
    color: var(--white);
}

.user-dropdown .dropdown-logout {
    background: none;
    border: none;
    display: block;
    width: 100%;
    text-align: left;
    padding: 12px 16px;
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
}

.user-dropdown .dropdown-logout:hover {
    background: var(--primary);
    color: var(--white);
}

.login-btn {
    padding: 8px 20px;
    background: var(--primary);
    border: none;
    border-radius: 4px;
    color: var(--white);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.3s ease;
}

.login-btn:hover {
    background: #e5850a;
}

.login-form {
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    padding: 30px;
    max-width: 400px;
    margin: 0 auto;
}

.login-form h2 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--white);
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    color: var(--white);
    font-size: 14px;
    color-scheme: dark;
}

.form-input {
    width: 100%;
    padding: 12px 15px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    color: var(--white);
    font-size: 14px;
    color-scheme: dark;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
}

.form-input select {
    width: 100%;
    padding: 12px 15px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    color: var(--white);
    font-size: 14px;
    cursor: pointer;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group.checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group.checkbox input {
    width: auto;
}

.form-group.checkbox label {
    display: inline;
    text-transform: none;
    color: var(--text-muted);
}

.btn-submit {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    border: none;
    border-radius: 4px;
    color: var(--white);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn-submit:hover {
    background: #e5850a;
}

.btn-delete {
	background: #dc3545;
	border-color: #dc3545;
}

.btn-delete:hover {
	background: #a02025;
}

.form-footer {
    margin-top: 15px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

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

.form-footer a:hover {
    text-decoration: underline;
}

.alert {
    padding: 12px 15px;
    border-radius: 4px;
    margin-bottom: 15px;
    font-size: 14px;
}

.alert-error {
    background: rgba(231, 76, 60, 0.15);
    border: 1px solid #e74c3c;
    color: #e74c3c;
}

.alert-success {
    background: rgba(39, 174, 96, 0.15);
    border: 1px solid #27ae60;
    color: #27ae60;
}

main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px;
    min-height: calc(100vh - 200px);
}

.page-title {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--dark-border);
}

.commercial-form {
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    padding: 30px;
    max-width: 800px;
}

.commercial-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--dark-border);
}

.form-group-with-desc {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
}

.form-group-with-desc .form-label {
    min-width: 200px;
    margin-bottom: 0;
}

.form-group-with-desc .form-input {
    width: 150px;
}

.form-group-with-desc .currency-prefix {
    color: var(--text-muted);
    font-size: 14px;
    min-width: 15px;
}

.form-group-with-desc .form-desc {
    color: var(--text-muted);
    font-size: 13px;
    min-width: 150px;
    position: relative;
    cursor: help;
    border-bottom: 1px dotted var(--text-muted);
}

.form-group-with-desc .tooltip {
    visibility: hidden;
    position: absolute;
    background: #000000;
    border: 2px solid var(--primary);
    color: var(--white);
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    z-index: 100;
    top: -30px;
    right: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    opacity: 0;
    transition: opacity 0.3s;
}

.form-group-with-desc .form-desc:hover .tooltip {
    visibility: visible;
    opacity: 1;
}

.mainpage-welcome h1 {
    font-size: 28px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 30px;
}

.mainpage-notices {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.mainpage-notice {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 6px;
    padding: 16px 20px;
    border-left: 4px solid var(--primary);
}

.mainpage-notice-text {
    color: var(--white);
    font-size: 14px;
}

.mainpage-notice-link {
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.mainpage-notice-link:hover {
    color: #ffb045;
    text-decoration: underline;
}

/* ==========================================================================
   Filaments
   ========================================================================== */

.filament-create-container {
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    padding: 30px;
    max-width: 800px;
}

.filament-create-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--dark-border);
}

.filament-create-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin: 25px 0 15px 0;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.filament-create-message {
    padding: 12px 15px;
    border-radius: 4px;
    margin-bottom: 20px;
    font-size: 14px;
}

.filament-create-message.success {
    background: rgba(39, 174, 96, 0.15);
    border: 1px solid #27ae60;
    color: #27ae60;
}

.filament-create-message.error {
    background: rgba(231, 76, 60, 0.15);
    border: 1px solid #e74c3c;
    color: #e74c3c;
}

.filament-create-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.filament-create-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filament-create-group.full-width {
    grid-column: 1 / -1;
}

.filament-create-label {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.filament-create-input {
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    padding: 12px 15px;
    font-size: 14px;
    color: var(--white);
    transition: border-color 0.3s ease;
}

.filament-create-input:focus {
    outline: none;
    border-color: var(--primary);
}

.filament-create-input::placeholder {
    color: var(--text-muted);
}

.filament-create-input[type="date"] {
    color-scheme: dark;
}

.filament-create-submit {
    grid-column: 1 / -1;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 4px;
    padding: 14px 30px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-top: 20px;
}

.filament-create-submit:hover {
    background: #e5850a;
}

.filament-create-hint {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 5px;
    line-height: 1.4;
    position: relative;
    top: 24px;
}

.filaments-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--dark-border);
    padding-bottom: 10px;
}

.filaments-tab {
    padding: 10px 20px;
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 4px 4px 0 0;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.filaments-tab:hover {
    color: var(--white);
    border-color: var(--primary);
}

.filaments-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.filaments-list-container {
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    padding: 30px;
}

.filaments-list-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--dark-border);
}

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

.filaments-empty a {
    color: var(--primary);
}

.filaments-table {
    width: 100%;
    border-collapse: collapse;
}

.filaments-table th,
.filaments-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--dark-border);
}

.filaments-table th {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--primary);
    background: var(--dark-bg);
}

.filaments-table td {
    color: var(--white);
    font-size: 14px;
}

.filaments-table tr:hover td {
    background: var(--dark-bg);
}

.filaments-controls {
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 25px;
}

.filaments-controls-row {
    display: flex;
    align-items: flex-end;
    gap: 20px;
    flex-wrap: wrap;
}

.filaments-filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.filaments-filter-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.filaments-filter-select {
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    padding: 10px 14px;
    font-size: 13px;
    color: var(--white);
    min-width: 160px;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.filaments-filter-select:hover {
    border-color: var(--primary);
}

.filaments-filter-select:focus {
    outline: none;
    border-color: var(--primary);
}

.filaments-filter-select option {
    background: var(--dark-secondary);
    color: var(--white);
}

.filaments-price-range {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filaments-filter-input {
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    padding: 10px 12px;
    font-size: 13px;
    color: var(--white);
    width: 80px;
    transition: border-color 0.2s ease;
}

.filaments-filter-input:hover {
    border-color: var(--primary);
}

.filaments-filter-input:focus {
    outline: none;
    border-color: var(--primary);
}

.filaments-filter-input::placeholder {
    color: var(--text-muted);
}

.filaments-price-separator {
    color: var(--text-muted);
    font-size: 13px;
}

.filaments-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border: none;
}

.filaments-btn-clear {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.filaments-btn-clear:hover {
    background: var(--primary);
    color: var(--white);
}

.filaments-row-clickable {
    cursor: pointer;
    transition: background 0.2s ease;
}

.filaments-row-clickable:hover {
    background: var(--dark-bg);
}

.filament-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    overflow: auto;
}

.filament-modal-content {
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    margin: 50px auto;
    max-width: 600px;
    padding: 30px;
    position: relative;
    max-height: 80vh;
    overflow-y: auto;
}

.filament-modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s ease;
}

.filament-modal-close:hover {
    color: var(--white);
}

.filament-modal-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--dark-border);
}

.filament-modal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.filament-modal-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filament-modal-field label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.filament-modal-field span {
    font-size: 14px;
    color: var(--white);
}

.filament-modal-input {
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    padding: 10px 12px;
    font-size: 14px;
    color: var(--white);
    width: 100%;
    transition: border-color 0.2s ease;
}

.filament-modal-input:focus {
    outline: none;
    border-color: var(--primary);
}

.filament-modal-input.saved {
    border-color: #27ae60;
}

.filament-modal-value {
    font-size: 14px;
    color: var(--text-muted);
}

.filament-modal-input[type="date"] {
    color-scheme: dark;
    -webkit-appearance: none;
    appearance: none;
}

.filament-modal-input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1) brightness(2);
    cursor: pointer;
    opacity: 1;
}

/* ==========================================================================
   Calculator
   ========================================================================== */

.calc-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 20px;
}

.calc-tables-row {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.calc-table {
    flex: 1;
    min-width: 320px;
    max-width: 550px;
    min-width: 320px;
    max-width: 550px;
    border-collapse: separate;
    border-spacing: 0;
    width: 100%;
    border-radius: 8px;
    overflow: visible;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
}

.calc-table th,
.calc-table td {
    padding: 12px 15px;
    text-align: left;
}

.calc-table thead th {
    background: linear-gradient(180deg, #1f1f1f 0%, #141414 100%);
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: none;
    border-bottom: 1px solid var(--dark-border);
}

.calc-table thead th:first-child {
    border-top-left-radius: 8px;
}

.calc-table thead th:last-child {
    border-top-right-radius: 8px;
}

.calc-table tbody td {
    border-bottom: 1px solid var(--dark-border);
    background-color: var(--dark-secondary);
}

.calc-table tbody tr:last-child td {
    border-bottom: none;
}

.calc-table tbody tr:last-child td:first-child {
    border-bottom-left-radius: 8px;
}

.calc-table tbody tr:last-child td:last-child {
    border-bottom-right-radius: 8px;
}

.calc-table tbody tr:nth-child(even) td {
    background-color: var(--dark-tertiary);
}

.calc-table td:first-child {
    width: 55%;
    font-weight: 500;
    color: var(--text-muted);
}

.calc-table td:last-child {
    width: 45%;
    text-align: right;
    font-weight: 600;
    color: var(--white);
}

.calc-table-costs td:first-child {
    width: calc(55% - 100px);
}

.calc-table-costs td:last-child {
    width: calc(45% + 100px);
}

.calc-input-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.calc-input-group input,
.calc-input-group select {
    flex: 1;
    min-width: 80px;
}

.calc-unit {
    color: var(--text-muted);
    font-size: 12px;
    white-space: nowrap;
}

.calc-radio-group {
    display: flex;
    align-items: center;
    gap: 15px;
}

.calc-radio-label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    color: var(--white);
    font-size: 13px;
}

.calc-radio-label input[type="radio"] {
    accent-color: var(--primary);
}

.calc-table-quote .calc-total-row td {
    font-weight: 700;
    color: var(--primary);
    border-top: 2px solid var(--primary);
}

.calc-table td:last-child {
    width: 35%;
    text-align: right;
    font-weight: 600;
    color: var(--white);
}

.calc-table input[type="number"],
.calc-table select {
    width: 100%;
    padding: 8px 10px;
    box-sizing: border-box;
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    font-size: 14px;
    background-color: var(--dark-bg);
    color: var(--white);
    transition: border-color 0.2s, box-shadow 0.2s;
    color-scheme: dark;
}

.calc-table input[type="number"]:focus,
.calc-table select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(247, 148, 29, 0.2);
}

.calc-table input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.calc-table label {
    cursor: pointer;
    display: block;
}

/* Calculator tooltips - matching commercial page tooltip style */
.calc-tooltip-wrap {
    position: relative;
    display: inline-block;
    width: 100%;
}

.calc-tooltip-wrap .calc-tooltip {
    visibility: hidden;
    position: absolute;
    background: #000000;
    border: 2px solid var(--primary);
    color: var(--white);
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    white-space: normal;
    z-index: 9999;
    bottom: calc(100% + 8px);
    left: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    max-width: 400px;
}

.calc-tooltip-wrap:hover .calc-tooltip {
    visibility: visible;
    opacity: 1;
}

.calc-radio-group .calc-tooltip-wrap {
    width: auto;
    display: flex;
    align-items: center;
}

.calc-checkbox-wrap {
    position: relative;
    display: inline-block;
}

.calc-checkbox-wrap .calc-tooltip {
    visibility: hidden;
    position: absolute;
    background: #000000;
    border: 2px solid var(--primary);
    color: var(--white);
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    z-index: 9999;
    bottom: calc(100% + 8px);
    left: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.calc-checkbox-wrap:hover .calc-tooltip {
    visibility: visible;
    opacity: 1;
}

.calc-table td .calc-tooltip-wrap {
    position: relative;
}

.mobile-menu-btn {
    display: none;
    background: #1a1a1a;
    border: 1px solid #2a2a2a;
    color: #ffffff;
    cursor: pointer;
    padding: 10px;
    margin-left: auto;
    border-radius: 4px;
}

.desktop-nav,
.desktop-user-menu,
.desktop-login-btn {
    display: flex;
}

.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #0a0a0a !important;
    z-index: 9999;
    overflow-y: auto;
    visibility: visible !important;
    opacity: 1 !important;
}

.mobile-menu-overlay.active {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.mobile-menu-header {
    display: flex;
    justify-content: flex-end;
    padding: 20px;
    border-bottom: 1px solid #2a2a2a;
    background: #0a0a0a;
}

.mobile-menu-close {
    background: #1a1a1a;
    border: 1px solid #2a2a2a;
    color: #ffffff;
    cursor: pointer;
    padding: 10px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-nav {
    padding: 20px;
    background: #0a0a0a !important;
    min-height: 100%;
    visibility: visible !important;
}

.mobile-nav-content {
    display: flex !important;
    flex-direction: column;
    gap: 0;
    visibility: visible !important;
}

.mobile-nav-tab {
    padding: 16px 20px;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #ffffff !important;
    text-decoration: none;
    border-bottom: 1px solid #2a2a2a;
    transition: all 0.3s ease;
    background: transparent;
    width: 100%;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.mobile-nav-tab:hover,
.mobile-nav-tab.active {
    color: #f7941d !important;
    background: #141414;
}

.mobile-nav-divider {
    height: 1px;
    background: #2a2a2a;
    margin: 10px 0;
}

.mobile-nav-logout {
    color: #888888;
}

.mobile-nav-logout:hover {
    color: #e74c3c;
}

.site-footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    border-top: 1px solid var(--dark-border);
    color: var(--text-muted);
    font-size: 12px;
}

.site-footer p {
    margin: 0;
}

.filaments-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border: none;
}

.filaments-btn-clear {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.filaments-btn-clear:hover {
    background: var(--primary);
    color: var(--white);
}

.filaments-btn-delete {
    background: transparent;
    color: #e74c3c;
    border: 1px solid #e74c3c;
}

.filaments-btn-delete:hover {
    background: #e74c3c;
    color: var(--white);
}

@media (max-width: 1029px) {
    header {
        padding: 10px 20px 10px 20px;
    }

    nav,
    .desktop-nav,
    .desktop-user-menu,
    .desktop-login-btn {
        display: none !important;
    }

    .mobile-menu-btn {
        display: flex !important;
        align-items: center;
        justify-content: center;
    }

    .header-right {
        gap: 10px;
        margin-left: auto;
    }

    .logo-container {
        flex-shrink: 0;
    }

    .calc-container {
        gap: 20px;
        margin-top: 15px;
    }

    .calc-tables-row {
        gap: 20px;
    }

    .calc-table {
        min-width: 100%;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
    }

    .calc-table th,
    .calc-table td {
        padding: 6px 8px;
        font-size: 11px;
    }

    .calc-table thead th {
        font-size: 10px;
    }

    .calc-table td:first-child {
        width: 50%;
    }

    .calc-table td:last-child {
        width: 50%;
    }

    .calc-table input[type="number"],
    .calc-table select {
        padding: 4px 6px;
        font-size: 11px;
    }

    .calc-input-group {
        gap: 2px;
    }

    .calc-input-group input,
    .calc-input-group select {
        min-width: 50px;
    }

    .calc-unit {
        font-size: 9px;
    }

    .calc-radio-group {
        gap: 8px;
    }

    .calc-radio-label {
        font-size: 10px;
    }

    .calc-total-row td {
        font-size: 12px;
    }

    main {
        padding: 20px;
    }

    .page-title {
        font-size: 12px;
        margin-bottom: 20px;
        padding-bottom: 10px;
    }

    .commercial-form {
        padding: 15px;
    }

    .commercial-title {
        font-size: 16px;
        margin-bottom: 15px;
        padding-bottom: 10px;
    }

    .form-group-with-desc {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .form-group-with-desc .form-label {
        min-width: 100%;
    }

    .form-group-with-desc .form-input {
        width: 100%;
    }

    .form-group-with-desc .currency-prefix {
        display: none;
    }

    .form-group-with-desc .form-desc {
        display: none;
    }

    .form-label {
        font-size: 12px;
    }

    .form-input {
        padding: 8px 10px;
        font-size: 13px;
    }

    .commercial-title {
        font-size: 14px;
    }

    .btn-submit {
        padding: 10px 20px;
        font-size: 12px;
        width: 100%;
    }

    .site-footer {
        text-align: center;
        padding: 15px;
        margin-top: 30px;
    }
}

.quick-add-brands {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.quick-add-brand-wrapper {
    position: relative;
}

.quick-add-brand-btn {
    padding: 8px 16px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quick-add-brand-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
}

.quick-add-filaments {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--dark-secondary);
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    padding: 10px;
    z-index: 100;
    min-width: 200px;
    max-height: 300px;
    overflow-y: auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.quick-add-brand-wrapper:hover .quick-add-filaments {
    display: block;
}

.quick-add-filament-btn {
    display: block;
    width: 100%;
    padding: 8px 12px;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--dark-border);
    color: var(--white);
    font-size: 12px;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quick-add-filament-btn:last-child {
    border-bottom: none;
}

.quick-add-filament-btn:hover {
    background: var(--primary);
    color: var(--white);
}

.aboutList {
	color: #a0a0a0; 
	padding: 8px 0; 
	border-bottom: 1px solid #25252a; 
	display: flex; 
	align-items: center;
}

.aboutBullets {
	display: inline-block; 
	width: 6px; 
	height: 6px; 
	background: var(--primary); 
	border-radius: 50%; 
	margin-right: 12px; 
	flex-shrink: 0;
}

.aboutVersionDiv {
	border: 1px solid #303030;
	padding: 20px;
	border-radius: 8px;
	background-color: #101010;
	margin-bottom: 25px;
}