/* =============================================
   대동여지도 탐구 - Common Styles
   ============================================= */




/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #8B4513;
    --color-secondary: #D4A574;
    --color-accent: #FF6B35;
    --color-background: #F5E6D3;
    --color-text: #2C1810;
    --color-text-light: #5C4033;
    --color-white: #FFFFFF;
    --color-black: #000000;
    --color-overlay: rgba(0, 0, 0, 0.7);

    /* 단청/오방색 */
    --dancheong-red: #C73E3A;
    --dancheong-blue: #1E4D7C;
    --dancheong-yellow: #E8B830;
    --dancheong-green: #2D5A3D;

    /* 금박 효과 */
    --gold-primary: #C9A227;
    --gold-light: #E8D48A;
    --gold-dark: #8B6914;

    /* 한지 색상 */
    --hanji-cream: #F7F2E4;
    --hanji-aged: #E8DCC8;

    /* Map specific colors */
    --color-marker-event: #FF6B35;
    --color-marker-place: #2C1810;

    /* Typography */
    --font-primary: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Z-index layers */
    --z-base: 1;
    --z-header: 100;
    --z-nav: 200;
    --z-modal: 300;
    --z-toast: 400;

    /* Safe area */
    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover,
a:focus {
    color: var(--color-accent);
}

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

/* Buttons */
button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    -webkit-appearance: none;
    appearance: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-align: center;
    white-space: nowrap;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-text);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-circle {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: var(--radius-full);
}

.btn-circle.btn-lg {
    width: 64px;
    height: 64px;
}

/* Layout */
.container {
    width: 100%;
    max-width: 768px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.page-wrapper {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    padding-top: var(--safe-area-top);
    padding-bottom: var(--safe-area-bottom);
}

.page-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    padding-top: var(--safe-area-top);
    background-color: transparent;
    z-index: var(--z-header);
    transition: background-color var(--transition-normal);
}

.header.header-solid {
    background-color: var(--color-background);
    box-shadow: var(--shadow-sm);
}

.header-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.header-btn:hover,
.header-btn:focus {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.header-btn svg,
.header-btn img {
    width: 24px;
    height: 24px;
}

.header-spacer {
    height: calc(56px + var(--safe-area-top));
}

.header-controls {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-sm);
}

/* === Navigation Drawer === */
.nav-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    z-index: var(--z-nav);
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-overlay.active { opacity: 1; visibility: visible; }

.nav-drawer {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: 100%;
    background-color: var(--color-background);
    z-index: calc(var(--z-nav) + 1);
    transform: translateX(100%);
    transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    padding-top: var(--safe-area-top);
    padding-bottom: var(--safe-area-bottom);
    overflow-y: auto;
    overscroll-behavior: contain;
}
.nav-drawer.active { transform: translateX(0); }

.nav-drawer-close {
    position: absolute;
    top: calc(var(--safe-area-top) + 12px);
    right: var(--spacing-md);
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-text-light);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    z-index: 2;
}
.nav-drawer-close:active {
    background-color: rgba(0,0,0,0.06);
    color: var(--color-text);
}
.nav-drawer-close svg { width: 24px; height: 24px; }

.nav-drawer-content {
    flex: 1;
    display: flex; flex-direction: column; justify-content: center;
    padding: 0 var(--spacing-xxl);
}

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

.nav-drawer-item {
    opacity: 0;
    transform: translateX(24px);
    transition: opacity 0.35s cubic-bezier(0.4,0,0.2,1),
                transform 0.35s cubic-bezier(0.4,0,0.2,1);
    transition-delay: calc(var(--item-index, 0) * 60ms + 100ms);
}
.nav-drawer.active .nav-drawer-item {
    opacity: 1; transform: translateX(0);
}
.nav-drawer:not(.active) .nav-drawer-item {
    transition-delay: 0ms;
    transition-duration: 0.15s;
}

.nav-drawer-link {
    display: flex;
    align-items: center;
    padding: 14px 0;
    font-family: var(--font-primary);
    font-size: 1.25rem; font-weight: 700;
    color: var(--color-text);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: color var(--transition-fast);
    position: relative;
}
.nav-drawer-link.active { color: var(--gold-primary); }
.nav-drawer-link.active::before {
    content: '';
    position: absolute;
    left: -16px; top: 50%; transform: translateY(-50%);
    width: 3px; height: 20px;
    background: var(--gold-primary);
    border-radius: 2px;
}
.nav-drawer-link:active { color: var(--gold-primary); }

.nav-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
    margin-right: 14px;
    opacity: 0.55;
    transition: opacity var(--transition-fast);
}
.nav-drawer-link.active .nav-icon {
    opacity: 0.85;
}
.nav-drawer-link:active .nav-icon {
    opacity: 0.85;
}
.nav-drawer-item--has-sub {
}

.nav-drawer-sub {
    padding-left: 38px;
    padding-bottom: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.nav-drawer-sub.open {
    max-height: 200px;
}
.nav-drawer-sublink {
    display: block;
    padding: 14px 0;
    font-family: var(--font-primary);
    font-size: 1.1rem; font-weight: 600;
    color: var(--color-text);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: color var(--transition-fast);
    position: relative;
}
.nav-drawer-sublink:active { color: var(--gold-primary); }
.nav-drawer-sublink.active { color: var(--gold-primary); }

.nav-drawer-toggle-icon {
    margin-left: auto;
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
    opacity: 0.4;
}
.nav-drawer-item--has-sub.open .nav-drawer-toggle-icon {
    transform: rotate(180deg);
}
.nav-drawer-sublink.active::before {
    content: '';
    position: absolute;
    left: -16px; top: 50%; transform: translateY(-50%);
    width: 3px; height: 20px;
    background: var(--gold-primary);
    border-radius: 2px;
}

.nav-drawer-footer {
    padding: var(--spacing-lg) var(--spacing-xxl);
    padding-bottom: calc(var(--spacing-xl) + var(--safe-area-bottom));
}

/* Language Switch (공통) */
.lang-switch {
    display: inline-flex;
    gap: 0;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 4px;
    border-radius: 999px;
}

.lang-switch-btn {
    padding: 6px 20px;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: #9E9E9E;
    background-color: transparent;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
}

.lang-switch-btn.active {
    background-color: #766551;
    color: #FFFFFF;
    border: 2px solid transparent;
    font-weight: 600;
}

/* Touch feedback */
.touch-feedback {
    position: relative;
    overflow: hidden;
}

.touch-feedback::after {
    content: '';
    position: absolute;
    inset: 0;
    background-color: var(--color-black);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.touch-feedback:active::after {
    opacity: 0.1;
}

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

.text-display {
    font-family: var(--font-primary);
    font-weight: 900;
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-secondary);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    background-color: var(--color-background);
    z-index: var(--z-modal);
}

.loading-text {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Responsive */
@media (min-width: 768px) {
    html {
        font-size: 18px;
    }

    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print */
@media print {
    .header,
    .nav-overlay,
    .nav-drawer {
        display: none;
    }
}

/* Main Page Header Gold Styles */
.main-page .header-btn {
    background: linear-gradient(135deg,
        rgba(247, 242, 228, 0.95) 0%,
        rgba(232, 220, 200, 0.9) 100%);
    border: 2px solid var(--gold-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.main-page .header-btn svg {
    color: var(--gold-primary);
}

/* 3-A. 헤더 버튼 금색 리플 (메인 페이지) */
.main-page .header-btn .ripple-effect {
    background-color: rgba(201, 162, 39, 0.35);
}

/* 3-B. 헤더 버튼 :active 프레스 효과 */
.main-page .header-btn:active {
    transform: scale(0.88);
    box-shadow:
        inset 0 0 8px rgba(201, 162, 39, 0.4),
        0 1px 4px rgba(0, 0, 0, 0.1);
    border-color: var(--gold-light);
    transition: all 0.08s ease;
}

/* =============================================
   전통 스타일 버튼 공통 클래스
   ============================================= */

/* Primary 버튼 (단청 빨간색) */
.btn-traditional-primary {
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    color: var(--color-background);
    font-family: var(--font-primary);
    font-weight: 800;
    letter-spacing: 0;
    box-shadow: none;
    transition: all var(--transition-fast);
}

.btn-traditional-primary:hover,
.btn-traditional-primary:focus {
    background: #6d3610;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Secondary 버튼 (한지 배경) */
.btn-traditional-secondary {
    background: var(--hanji-aged);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    font-family: var(--font-primary);
    font-weight: 800;
    box-shadow: none;
    transition: all var(--transition-fast);
}

.btn-traditional-secondary:hover,
.btn-traditional-secondary:focus {
    background: #d9ccb5;
    border-color: #6d3610;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 아이콘 버튼 (원형, 한지 배경) */
.btn-traditional-icon {
    background: linear-gradient(135deg, var(--hanji-cream) 0%, var(--hanji-aged) 100%);
    border: 2px solid var(--gold-primary);
    border-radius: 50%;
    box-shadow:
        inset 0 0 0 3px var(--hanji-cream),
        inset 0 0 0 5px var(--dancheong-red),
        0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all var(--transition-fast);
}

.btn-traditional-icon:hover,
.btn-traditional-icon:focus {
    box-shadow:
        inset 0 0 0 3px var(--hanji-cream),
        inset 0 0 0 5px var(--dancheong-red),
        0 6px 16px rgba(0, 0, 0, 0.2),
        0 0 20px rgba(201, 162, 39, 0.3);
    transform: translateY(-2px);
}

.btn-traditional-icon svg {
    color: var(--gold-primary);
    stroke: var(--gold-primary);
}

.btn-traditional-icon:hover svg,
.btn-traditional-icon:focus svg {
    color: var(--dancheong-red);
    stroke: var(--dancheong-red);
}

/* ==================== Fullscreen Image Viewer ==================== */
.fullscreen-image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 16px;
}
.fullscreen-image-viewer .viewer-close {
    position: absolute;
    top: calc(env(safe-area-inset-top, 0px) + 16px);
    right: 16px;
    color: #fff;
    font-size: 24px;
    padding: 12px;
    cursor: pointer;
    z-index: 10000;
    line-height: 1;
}