/* ============================================
   Courbevoie Immobilier - Main Stylesheet
   Palette: Navy #1a2a4a / Gold #c8a45c / White
   ============================================ */

/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --navy: #1a2a4a;
    --navy-light: #2d4373;
    --navy-dark: #0f1a32;
    --gold: #c8a45c;
    --gold-light: #d9bd7a;
    --gold-dark: #a8843f;
    --white: #ffffff;
    --gray-50: #f8f9fa;
    --gray-100: #f0f2f5;
    --gray-200: #e3e7ec;
    --gray-300: #cbd2da;
    --gray-400: #9ba5b0;
    --gray-500: #6b7580;
    --gray-600: #4a5260;
    --gray-700: #343b48;
    --gray-800: #1f242f;
    --green: #28a745;
    --red: #dc3545;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,.10);
    --shadow-lg: 0 8px 32px rgba(0,0,0,.15);
    --radius: 10px;
    --radius-lg: 16px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --transition: 0.25s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    color: var(--gray-700);
    line-height: 1.6;
    background: var(--white);
    overflow-x: hidden;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--navy);
    font-weight: 700;
    line-height: 1.25;
}

h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

/* ===== Container ===== */
.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-align: center;
    font-family: inherit;
}

.btn-primary {
    background: var(--gold);
    color: var(--navy);
}

.btn-primary:hover {
    background: var(--gold-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--navy);
    color: var(--white);
}

.btn-secondary:hover {
    background: var(--navy-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--navy);
    border: 2px solid var(--navy);
}

.btn-outline:hover {
    background: var(--navy);
    color: var(--white);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* ===== Header & Navigation ===== */
.site-header {
    background: var(--navy);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-main {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--white);
}

.logo-sub {
    font-size: 0.8rem;
    color: var(--gold);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-links a {
    color: rgba(255,255,255,.85);
    padding: 8px 14px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--white);
    background: rgba(255,255,255,.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 26px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}
.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== Hero Section ===== */
.hero {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
    color: var(--white);
    padding: 70px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 70% 50%, rgba(200,164,92,.12) 0%, transparent 60%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 650px;
}

.hero h1 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: clamp(2rem, 5vw, 3rem);
}

.hero h1 .highlight {
    color: var(--gold);
}

.hero p {
    font-size: 1.2rem;
    color: rgba(255,255,255,.85);
    margin-bottom: 30px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.hero-stat {
    text-align: left;
}

.hero-stat-num {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--gold);
    line-height: 1;
}

.hero-stat-label {
    font-size: 0.9rem;
    color: rgba(255,255,255,.7);
    margin-top: 4px;
}

/* ===== Sections ===== */
.section {
    padding: 64px 0;
}

.section-alt {
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-500);
}

.section-tag {
    display: inline-block;
    background: rgba(200,164,92,.15);
    color: var(--gold-dark);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 6px 16px;
    border-radius: 30px;
    margin-bottom: 16px;
}

/* ===== Cards Grid ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.card h3 {
    margin-bottom: 12px;
}

.card p {
    color: var(--gray-500);
    margin-bottom: 20px;
}

/* ===== Steps ===== */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px;
    counter-reset: step-counter;
}

.step-card {
    text-align: center;
    padding: 36px 24px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    position: relative;
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--gold);
    color: var(--navy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0 auto 20px;
}

.step-card h3 {
    margin-bottom: 10px;
}

.step-card p {
    color: var(--gray-500);
}

/* ===== Trust Badges ===== */
.trust-bar {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    padding: 24px 0;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--gray-600);
    font-weight: 500;
}

.trust-badge-icon {
    font-size: 1.4rem;
}

/* ===== Calculator Card ===== */
.calc-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 720px;
    margin: 0 auto;
    padding: 40px;
    border: 1px solid var(--gray-200);
}

.calc-card h2 {
    text-align: center;
    margin-bottom: 8px;
}

.calc-card .calc-subtitle {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 32px;
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: 22px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group label .required {
    color: var(--red);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition);
    background: var(--white);
    color: var(--gray-700);
}

.form-control:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(200,164,92,.15);
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b7580' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-hint {
    font-size: 0.85rem;
    color: var(--gray-400);
    margin-top: 4px;
}

/* Radio groups */
.radio-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.radio-option {
    flex: 1;
    min-width: 120px;
}

.radio-option input[type="radio"] {
    display: none;
}

.radio-option label {
    display: block;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: 0;
}

.radio-option input[type="radio"]:checked + label {
    border-color: var(--gold);
    background: rgba(200,164,92,.08);
    color: var(--gold-dark);
}

.radio-option label:hover {
    border-color: var(--gold-light);
}

/* ===== Calculator Results ===== */
.calc-result {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
    color: var(--white);
    border-radius: var(--radius-lg);
    padding: 36px;
    margin-top: 32px;
    text-align: center;
    display: none;
}

.calc-result.visible {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.calc-result-label {
    font-size: 1rem;
    color: rgba(255,255,255,.7);
    margin-bottom: 8px;
}

.calc-result-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gold);
    margin-bottom: 8px;
}

.calc-result-range {
    font-size: 1.1rem;
    color: rgba(255,255,255,.8);
    margin-bottom: 24px;
}

.calc-result-details {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin: 20px 0 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,.15);
}

.calc-detail-item {
    text-align: center;
}

.calc-detail-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,.6);
}

.calc-detail-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--white);
}

/* ===== Info Boxes ===== */
.info-box {
    background: rgba(200,164,92,.08);
    border-left: 4px solid var(--gold);
    padding: 20px 24px;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 24px 0;
}

.info-box p {
    margin-bottom: 0;
    color: var(--gray-600);
}

.info-box strong {
    color: var(--navy);
}

/* ===== Content Blocks ===== */
.content-section {
    max-width: 780px;
    margin: 0 auto;
}

.content-section h2 {
    margin: 36px 0 16px;
}

.content-section h3 {
    margin: 28px 0 12px;
}

.content-section p {
    margin-bottom: 16px;
    color: var(--gray-600);
}

.content-section ul, .content-section ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.content-section li {
    margin-bottom: 8px;
    color: var(--gray-600);
}

.content-section .lead {
    font-size: 1.15rem;
    color: var(--gray-600);
    margin-bottom: 24px;
}

/* ===== Tables ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.data-table th {
    background: var(--navy);
    color: var(--white);
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.95rem;
}

.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-600);
}

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

.data-table tr:nth-child(even) td {
    background: var(--gray-50);
}

/* ===== CTA Banner ===== */
.cta-banner {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
    color: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    margin: 48px 0;
}

.cta-banner h2 {
    color: var(--white);
    margin-bottom: 16px;
}

.cta-banner p {
    color: rgba(255,255,255,.8);
    margin-bottom: 28px;
    font-size: 1.1rem;
}

/* ===== Neighborhood Cards ===== */
.neighborhood-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.neighborhood-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: all var(--transition);
}

.neighborhood-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.neighborhood-card-body {
    padding: 24px;
}

.neighborhood-card h3 {
    margin-bottom: 8px;
    color: var(--navy);
}

.neighborhood-card .price-tag {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gold);
    margin: 8px 0;
}

.neighborhood-card p {
    color: var(--gray-500);
    font-size: 0.95rem;
}

/* ===== FAQ Accordion ===== */
.faq-item {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-question {
    padding: 20px 24px;
    cursor: pointer;
    font-weight: 600;
    color: var(--navy);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition);
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-question .faq-icon {
    font-size: 1.5rem;
    transition: transform var(--transition);
}

.faq-item.open .faq-question .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 24px 20px;
    color: var(--gray-500);
}

/* ===== Form Alerts ===== */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ===== Page Title Banner ===== */
.page-banner {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-dark) 100%);
    color: var(--white);
    padding: 48px 0 40px;
    text-align: center;
}

.page-banner h1 {
    color: var(--white);
    margin-bottom: 12px;
}

.page-banner p {
    color: rgba(255,255,255,.8);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,.6);
    margin-top: 16px;
}

.breadcrumb a {
    color: var(--gold);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--navy-dark);
    color: rgba(255,255,255,.7);
    padding: 56px 0 0;
    margin-top: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-col h3 {
    color: var(--white);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.footer-col p {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: rgba(255,255,255,.7);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--gold);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.trust-badges-footer {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.badge {
    font-size: 0.8rem;
    background: rgba(255,255,255,.08);
    padding: 4px 12px;
    border-radius: 20px;
    color: var(--gold);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255,255,255,.5);
}

.footer-bottom a {
    color: var(--gold);
}

/* ===== Error 404 ===== */
.error-404 {
    text-align: center;
    padding: 80px 0;
}

.error-404 h1 {
    font-size: 3rem;
    color: var(--navy);
}

.error-404 p {
    font-size: 1.2rem;
    margin: 16px 0 24px;
    color: var(--gray-500);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 62px;
        left: 0;
        width: 100%;
        background: var(--navy);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        clip-path: inset(0 0 100% 0);
        transition: clip-path 0.3s ease;
    }

    .nav-links.open {
        clip-path: inset(0 0 0 0);
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 14px;
        font-size: 1.05rem;
    }

    .hero {
        padding: 50px 0 40px;
    }

    .hero-stats {
        gap: 24px;
    }

    .section {
        padding: 48px 0;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .calc-card {
        padding: 28px 20px;
    }

    .cta-banner {
        padding: 32px 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .step-card {
        padding: 28px 16px;
    }

    .calc-result-details {
        flex-direction: column;
        gap: 16px;
    }
}

/* ===== Dropdown Menu ===== */
.nav-dropdown {
    position: relative;
}
.dropdown-toggle {
    cursor: pointer;
}
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    min-width: 220px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    list-style: none;
    padding: 8px 0;
    z-index: 100;
    border: 1px solid var(--gray-200);
}
.dropdown-menu li {
    margin: 0;
}
.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--gray-700);
    font-size: 0.9rem;
    white-space: nowrap;
}
.dropdown-menu a:hover {
    background: var(--gray-50);
    color: var(--navy);
}
.nav-dropdown:hover .dropdown-menu {
    display: block;
}

/* ===== Quartier Pages ===== */
.quartier-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 32px 0;
}
.quartier-stat {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}
.quartier-stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--gold);
}
.quartier-stat-label {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-top: 4px;
}
.quartier-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin: 32px 0;
}
.quartier-nav a {
    display: block;
    padding: 16px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    text-align: center;
    font-weight: 600;
    color: var(--navy);
    transition: all var(--transition);
}
.quartier-nav a:hover {
    border-color: var(--gold);
    color: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}
.quartier-nav a.active {
    border-color: var(--gold);
    background: rgba(200,164,92,.08);
    color: var(--gold-dark);
}
.quartier-highlight {
    background: rgba(200,164,92,.08) !important;
    font-weight: 700;
}

/* Mobile dropdown */
@media (max-width: 768px) {
    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        padding: 0 0 0 16px;
        background: transparent;
    }
    .dropdown-menu a {
        color: rgba(255,255,255,.8);
        padding: 10px 14px;
    }
    .dropdown-menu a:hover {
        background: rgba(255,255,255,.05);
        color: var(--white);
    }
    .nav-dropdown:hover .dropdown-menu {
        display: none;
    }
    .nav-dropdown.open .dropdown-menu {
        display: block;
    }
}