/* ========================================
   CSS Variables
   ======================================== */
   :root {
    /* Colors */
    --primary-blue: #3D8BFF;
    --primary-blue-dark: #1266E5;
    
    --text-primary: #17171B;
    --text-secondary: #909090;
    --text-tertiary: #DCDCDC;
    --text-white: #FFFFFF;
    
    --bg-white: #FFFFFF;
    --bg-gray-light: #F9F9F9;
    --bg-gray: #F5F5F5;
    
    --border-color: #E0E0E0;
    --border-dark: #CCCCCC;
    
    /* Additional color aliases for compatibility */
    --color-primary: var(--primary-blue);
    --color-primary-dark: var(--primary-blue-dark);
    --color-primary-light: var(--primary-blue-light);
    --color-black: var(--text-primary);
    --color-white: var(--bg-white);
    --color-gray-50: #FAFAFA;
    --color-gray-100: #F5F5F5;
    --color-gray-300: #D1D1D1;
    --color-gray-400: #9E9E9E;
    --color-gray-600: #757575;
    --color-gray-800: #424242;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.2);
    
    /* Typography */
    --font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-m: 15px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-2xl: 20px;
    --font-size-3xl: 24px;
    --font-size-4xl: 34px;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 11px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
    --spacing-3xl: 32px;
    --spacing-4xl: 40px;
    
    /* Layout */
    --header-height: 64px;
    --filter-panel-width: 320px;
    --property-list-width: 400px;
    --filter-bar-height: 80px;
    --content-max-width: 1200px;
    --container-max-width: 1200px;
    --container-padding: 2rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index */
    --z-header: 1000;
    --z-filter-bar: 999;
    --z-modal: 2000;
    --z-backdrop: 1999;
    --z-dropdown: 1500;
    --z-floating: 100;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-base);
}

ul, ol {
    list-style: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}
/* ========================================
   Header
======================================== */
.header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-header);

}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    gap: var(--spacing-3xl);
}

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

.header-logo a {
    content: url('../assest/logo.svg');
    width: 79px;
    height: 44px;
    object-fit: contain;
    object-position: center;
    display: block;
    margin: 0 auto;
    padding: 0;
    border: none;
}

.header-nav {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 100px;
    height: 100%;
}

.nav-menu li {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-menu li a {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-base);
    height: 63px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-menu li a:hover {
    border-bottom: 2px solid var(--text-primary);
}

.nav-menu li a.active {
    border-bottom: 2px solid var(--text-primary);
}

.header-logo-container div a:hover,
.header-logo-container div a.active {
    border-bottom: none;
}
/* 준비중 배지 */
.nav-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 6px;
    background-color: var(--primary-blue);
    border-radius: 10px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: #fff;
    line-height: 1.2;
    white-space: nowrap;
}

.header-actions {
    position: absolute;
    right: 20px;
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    flex-shrink: 0;
}

/* 데스크탑: header-actions의 로고 숨김 */
.header-actions .header-logo {
    display: none;
}

.language-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.language-selector:hover {
    border-color: var(--border-dark);
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    color: var(--text-primary);
    background: none;
    border: none;
    cursor: pointer;
}

.lang-btn.active {
    color: var(--text-primary);
}

.lang-flag {
    width: 16px;
    height: 12px;
    object-fit: cover;
    border-radius: 2px;
    flex-shrink: 0;
}

.lang-chevron {
    font-size: 10px;
    color: var(--text-secondary);
    margin-left: var(--spacing-xs);
    flex-shrink: 0;
}

.mobile-menu-toggle {
    display: none;
    font-size: var(--font-size-xl);
    padding: var(--spacing-sm);
    color: var(--text-primary);
}

/* ========================================
   Simple Header (for detail pages)
======================================== */
.simple-header {
    position: sticky;
    top: 0;
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
    z-index: var(--z-header);
    box-shadow: var(--shadow-sm);
}

.simple-header .header-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.back-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.back-btn:hover {
    background-color: var(--bg-gray-light);
}

.simple-header .logo {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-normal);
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.btn-inquiry {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    background-color: var(--primary-blue);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
}

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

@media (max-width: 1023px) {
    /* 데스크탑: nav-menu의 로고 숨김, 모바일: header-actions의 로고 표시 */
    .header-nav .header-logo {
        display: none;
    }
    
    .header-container {
        position: relative;
    }
    
    .header-actions .header-logo {
        display: block !important;
        position: fixed;
        left: 50%;
        top: calc(var(--header-height) / 2);
        transform: translate(-50%, -50%);
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: var(--bg-white);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-lg) 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        z-index: 999;
        gap: 0;
        height: auto;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-xl);
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-menu li a {
        height: auto;
        padding: var(--spacing-md) 0;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .header-logo {
        order: 1;
    }
    
    .header-nav {
        order: 2;
    }
    
    .header-actions {
        order: 3;
    }
    
    .main-container {
        grid-template-columns: 1fr;
        position: relative;
    }
    
    .filter-panel {
        position: absolute;
        top: 0;
        left: 0;
        bottom: 0;
        width: 360px;
        max-width: 85vw;
        z-index: var(--z-modal);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-lg);
    }
    
    .filter-panel.active {
        transform: translateX(0);
    }
    
    .filter-close-btn {
        display: block;
    }
    
    .property-list-panel {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        width: 400px;
        max-width: 85vw;
        z-index: calc(var(--z-modal) - 1);
        transform: translateX(100%);
        transition: transform var(--transition-base);
        box-shadow: var(--shadow-lg);
    }
    
    .property-list-panel.active {
        transform: translateX(0);
    }
    
    .mobile-filter-toggle {
        display: flex;
    }
    
    .floating-recommendation-btn {
        bottom: var(--spacing-2xl);
        padding: var(--spacing-md) var(--spacing-2xl);
        font-size: var(--font-size-sm);
    }
}

/* Mobile (375px - 767px) */
@media (max-width: 767px) {
    :root {
        --header-height: 56px;
        --spacing-xl: 16px;
        --spacing-2xl: 20px;
    }
    
    .header-container {
        padding: 0 var(--spacing-lg);
        gap: var(--spacing-lg);
    }
    
    .header-logo a {
        font-size: var(--font-size-lg);
    }
    
    .language-selector {
        padding: var(--spacing-xs);
    }
    
    .lang-btn {
        font-size: var(--font-size-xs);
    }
    
    .lang-flag {
        width: 14px;
        height: 10px;
    }
    
    .filter-panel {
        width: 100%;
        max-width: 100%;
    }
    
    .property-list-panel {
        width: 100%;
        max-width: 100%;
    }
    
    .checkbox-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-filters {
        grid-template-columns: 1fr;
    }
    
    .filter-panel-content {
        padding: var(--spacing-lg);
    }
    
    .filter-actions {
        padding: var(--spacing-lg);
    }
    
    .mobile-filter-toggle {
        top: var(--spacing-lg);
        left: var(--spacing-lg);
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .floating-recommendation-btn {
        bottom: var(--spacing-xl);
        padding: var(--spacing-sm) var(--spacing-xl);
        font-size: var(--font-size-sm);
    }
}

/* Very Small Mobile (max 374px) */
@media (max-width: 374px) {
    .header-logo a {
        font-size: var(--font-size-lg);
    }
    
    .language-selector {
        display: none;
    }
    
    .property-price {
        font-size: var(--font-size-lg);
    }
}

/* ========================================
   Utility Classes
======================================== */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

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

.text-bold {
    font-weight: var(--font-weight-bold);
}

.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-1 { margin-top: var(--spacing-sm) !important; }
.mb-1 { margin-bottom: var(--spacing-sm) !important; }
.mt-2 { margin-top: var(--spacing-lg) !important; }
.mb-2 { margin-bottom: var(--spacing-lg) !important; }

/* Print Styles */
@media print {
    .header,
    .filter-panel,
    .property-list-panel,
    .floating-recommendation-btn,
    .mobile-filter-toggle {
        display: none !important;
    }
    
    .map-panel {
        width: 100%;
        height: 100vh;
    }
}