:root {
    --primary: #2563EB; /* Deep Premium Blue */
    --primary-hover: #1D4ED8;
    --primary-light: #EFF6FF;
    --bg-main: #F1F5F9; /* Very light slate for modern app feel */
    --bg-panel: #FFFFFF;
    --text-dark: #0F172A; /* Crisp deep slate text */
    --text-gray: #475569;
    --text-light: #94A3B8;
    --border: #E2E8F0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
}

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

body {
    font-family: 'Pretendard', -apple-system, system-ui, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-dark);
    line-height: 1.5;
    overflow: hidden; /* Full screen app */
    -webkit-font-smoothing: antialiased;
}

/* App Layout */
.app-layout {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar Panel */
.side-panel {
    width: 420px;
    background: var(--bg-panel);
    box-shadow: 4px 0 24px rgba(15, 23, 42, 0.08); /* Premium thick shadow */
    display: flex;
    flex-direction: column;
    z-index: 20;
    position: relative;
}

.panel-header {
    padding: 28px 32px 16px;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: -0.5px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links { display: flex; gap: 24px; }

.nav-link {
    background: none;
    border: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    padding-bottom: 12px;
    position: relative;
    transition: color 0.2s;
}

.nav-link:hover { color: var(--text-dark); }
.nav-link.active { color: var(--text-dark); }
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px 3px 0 0;
}

/* Scrollable area */
.panel-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 28px 32px;
}

/* Scrollbar styling */
.panel-scroll::-webkit-scrollbar { width: 6px; }
.panel-scroll::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 3px; }

/* Search Container */
.search-container { margin-bottom: 28px; }

.search-bar {
    display: flex;
    align-items: center;
    background: white;
    border: 1.5px solid var(--border);
    border-radius: 14px;
    padding: 14px 18px;
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}

.search-bar:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.search-icon { color: var(--primary); font-size: 16px; margin-right: 14px; }

.search-bar input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 16px;
    font-weight: 500;
    outline: none;
    color: var(--text-dark);
}
.search-bar input::placeholder { color: var(--text-light); font-weight: 400; }

/* Welcome Box */
.welcome-box {
    background: linear-gradient(135deg, var(--primary-light) 0%, #FFFFFF 100%);
    border: 1px solid #DBEAFE;
    border-radius: 16px;
    padding: 22px;
    margin-bottom: 32px;
}

.weather-info { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.weather-info h2 { font-size: 19px; font-weight: 700; color: var(--primary); letter-spacing: -0.5px;}

.badge.highlight {
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
}

.subtitle { font-size: 14px; color: var(--text-gray); font-weight: 500; }

/* Filter Sections */
.filter-section { margin-bottom: 32px; }

.section-title {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}
.section-title span { font-size: 12px; font-weight: 500; color: var(--text-light); }

/* Toggles */
.toggle-group { display: flex; gap: 12px; }
.toggle {
    flex: 1;
    padding: 14px 0;
    background: var(--bg-main);
    border: 1px solid transparent;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-gray);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.toggle:hover { background: #E2E8F0; }
.toggle.active {
    background: var(--text-dark);
    border-color: var(--text-dark);
    color: white;
    box-shadow: var(--shadow-md);
}

/* Range Inputs */
.range-inputs { display: flex; align-items: center; gap: 12px; }
.input-wrap { flex: 1; position: relative; }
.input-wrap input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    outline: none;
    transition: all 0.2s;
    background: white;
    box-shadow: var(--shadow-sm);
}
.input-wrap input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.input-label { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); font-size: 11px; color: var(--text-light); font-weight: 600;}
.dash { color: var(--text-light); font-weight: 600; }
.narrow-inputs .input-wrap { flex: none; width: 45%; }
.narrow-inputs { justify-content: space-between; margin-top: 5px;}

/* Grid Layout */
.half-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* Sliders */
.slider-wrap {
    background: white;
    padding: 14px 16px;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}
input[type=range] { width: 100%; accent-color: var(--primary); cursor: pointer; }
.range-val { font-size: 14px; font-weight: 700; color: var(--text-dark); text-align: right; margin-top: 6px;}

/* Buttons */
.action-section { display: flex; flex-direction: column; gap: 14px; margin-top: 48px; margin-bottom: 24px; }
.btn-primary {
    background: var(--text-dark);
    color: white;
    border: none;
    border-radius: 14px;
    padding: 18px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); background: #1e293b; }

.btn-secondary {
    background: white;
    color: var(--text-dark);
    border: 1.5px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.btn-secondary:hover { background: var(--bg-main); border-color: var(--text-gray); }

/* List Summary Handle */
.list-summary {
    background: var(--bg-panel);
    border-top: 1px solid var(--border);
    padding: 24px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.2s;
    z-index: 10;
}
.list-summary:hover { background: var(--bg-main); }
.summary-text { display: flex; align-items: center; gap: 12px; font-size: 16px; font-weight: 700; color: var(--primary); }
.chevron { color: var(--text-light); }

/* Main Map View */
.map-view { flex: 1; position: relative; background: #E5E7EB; }
.map-container { width: 100%; height: 100%; }

/* Floating Stats */
.floating-stats {
    position: absolute;
    top: 32px;
    right: 32px;
    width: 360px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    padding: 28px;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255,255,255,0.6);
    z-index: 10;
}
.floating-stats h3 { font-size: 18px; font-weight: 800; margin-bottom: 24px; color: var(--text-dark); display: flex; align-items: center; gap: 8px;}
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.stat-box { background: white; padding: 18px; border-radius: 14px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); text-align: center; }
.stat-box .label { display: block; font-size: 13px; color: var(--text-gray); margin-bottom: 8px; font-weight: 600; }
.stat-box .val { display: block; font-size: 20px; font-weight: 800; color: var(--text-dark); }
.stat-box .val.highlight { color: #EF4444; }

.stat-footer { padding-top: 16px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-gray); display:flex; justify-content:space-between; align-items:center;}
.stat-footer b { color: var(--text-dark); font-weight: 700; }
.gap-note { font-size: 12px; color: var(--primary); font-weight: 600;}

/* List Modal */
.list-view-modal {
    position: fixed;
    bottom: -100%;
    left: 420px;
    right: 0;
    height: 70vh;
    background: var(--bg-panel);
    box-shadow: 0 -10px 50px rgba(15, 23, 42, 0.15);
    transition: bottom 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 50;
    display: flex;
    flex-direction: column;
    border-radius: 28px 28px 0 0;
}
.list-view-modal.active { bottom: 0; }

.modal-header {
    padding: 28px 48px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-header h3 { font-size: 20px; font-weight: 800; color: var(--text-dark); display: flex; align-items: center; gap: 8px;}

.btn-close {
    background: var(--bg-main);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    color: var(--text-gray);
    transition: all 0.2s;
}
.btn-close:hover { background: var(--text-dark); color: white; transform: rotate(90deg); }

.modal-body { flex: 1; overflow-y: auto; padding: 0 48px 48px; }

.premium-table { width: 100%; border-collapse: separate; border-spacing: 0; margin-top: 24px; }
.premium-table th {
    position: sticky;
    top: 0;
    background: var(--bg-panel);
    padding: 20px 16px;
    font-size: 14px;
    color: var(--text-light);
    font-weight: 700;
    text-align: left;
    border-bottom: 2px solid var(--border);
    z-index: 1;
}
.premium-table td {
    padding: 24px 16px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border);
}
.premium-table tr:hover td { background: var(--bg-main); }

/* Custom Marker */
.marker-bubble {
    background: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 800;
    box-shadow: 0 6px 16px rgba(0,0,0,0.2);
    border: 2px solid;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    color: var(--text-dark);
}
.marker-bubble::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 8px 6px 0;
    border-style: solid;
    border-color: white transparent transparent;
}
.marker-bubble:hover { transform: scale(1.15) translateY(-6px); z-index: 1000; }
.marker-naver { border-color: #03C75A; }
.marker-naver::after { border-top-color: #03C75A; }
.marker-zigbang { border-color: #FA880B; }
.marker-zigbang::after { border-top-color: #FA880B; }

.badge { padding: 6px 12px; border-radius: 8px; font-size: 12px; font-weight: 800; letter-spacing: 0.5px;}
.badge.naver { background: #E8F5E9; color: #1B5E20; }
.badge.zigbang { background: #FFF3E0; color: #E65100; }