/**
 * ============================================================================
 * assets/css/global.css - 전역 디자인 시스템 및 공통 레이아웃 스타일
 * ============================================================================
 */

:root {
    /* 브랜드 컬러 팔레트 */
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --primary-text: #3730a3;

    /* 배경 및 서피스 색상 */
    --bg-app: #f8fafc;
    --bg-surface: #ffffff;
    --bg-muted: #f1f5f9;
    --bg-card: #ffffff;

    /* 텍스트 색상 */
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-light: #94a3b8;

    /* 테두리 및 구분선 */
    --border-color: #e2e8f0;
    --border-focus: #818cf8;

    /* 상태 색상 */
    --color-danger: #ef4444;
    --color-danger-hover: #dc2626;
    --color-danger-light: #fee2e2;
    --color-success: #10b981;
    --color-warning: #f59e0b;

    /* 둥글기 */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;

    /* 그림자 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-app);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   0. 최상단 고정 글로벌 네비게이션 헤더
   ========================================================================== */
.global-navbar {
    height: 60px;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    padding: 0 24px;
    box-shadow: var(--shadow-sm);
}

.brand-container {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.brand-logo-badge {
    width: 38px;
    height: 38px;
    background: #0f172a;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
}

.brand-logo-badge span {
    color: #facc15;
    font-size: 12.5px;
    font-weight: 900;
    letter-spacing: -0.5px;
}

.brand-text-group {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-size: 15.5px;
    font-weight: 800;
    color: #0f172a;
    line-height: 1.2;
    letter-spacing: -0.3px;
}

.brand-subtitle {
    font-size: 11px;
    font-weight: 500;
    color: #64748b;
}

/* 3단 전체 레이아웃 */
.app-container {
    display: grid;
    grid-template-columns: 240px 1fr 320px;
    min-height: calc(100vh - 60px);
    background-color: var(--bg-app);
}

/* ==========================================================================
   1. 왼쪽 사이드바 네비게이션
   ========================================================================== */
.sidebar {
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 18px 14px;
    height: calc(100vh - 60px);
    position: sticky;
    top: 60px;
    overflow-y: auto;
}

.sidebar-header {
    margin-bottom: 20px;
}

.home-btn {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-group {
    margin-bottom: 24px;
}

.nav-group-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    padding: 0 12px 8px 12px;
    letter-spacing: -0.2px;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 9px 12px;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    color: #334155;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    text-decoration: none;
    transition: all 0.15s ease-in-out;
}

.nav-item i {
    width: 18px;
    height: 18px;
    stroke-width: 2;
    color: #64748b;
}

.nav-item:hover {
    background-color: var(--bg-muted);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--primary-light);
    color: var(--primary-text);
    font-weight: 700;
}

.nav-item.active i {
    color: var(--primary-color);
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 16px;
}

.security-card {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.security-icon {
    width: 18px;
    height: 18px;
    color: var(--color-success);
    flex-shrink: 0;
    margin-top: 2px;
}

.security-text strong {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.security-text p {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ==========================================================================
   2. 중앙 메인 작업 영역 공통 레이아웃
   ========================================================================== */
.main-content {
    padding: 28px 36px;
    overflow-y: auto;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.content-header {
    margin-bottom: 24px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.breadcrumb-arrow {
    width: 14px;
    height: 14px;
}

.breadcrumb .current {
    color: var(--primary-color);
    font-weight: 600;
}

.sub-brand {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.page-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    margin-bottom: 6px;
}

.page-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.privacy-notice {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: #f1f5f9;
    border: 1px solid var(--border-color);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 12.5px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.notice-icon {
    width: 16px;
    height: 16px;
    color: var(--primary-color);
    flex-shrink: 0;
}

/* 작업 영역 카드 기본형 */
.workspace-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 24px;
}

.workspace-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background-color: #fafbfc;
    flex-wrap: wrap;
    gap: 12px;
}

.toolbar-guide {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.toolbar-guide strong {
    font-size: 14px;
    color: var(--text-primary);
}

.toolbar-guide .guide-sub {
    font-size: 12px;
    color: var(--text-muted);
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 드롭존 기본형 */
.drop-zone {
    min-height: 280px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #ffffff;
    transition: background-color 0.2s;
    position: relative;
}

.drop-zone.dragover {
    background-color: var(--primary-light);
    border: 2px dashed var(--primary-color);
}

.empty-state {
    text-align: center;
    pointer-events: none;
}

.empty-state-icon {
    width: 56px;
    height: 56px;
    background-color: var(--bg-muted);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px auto;
}

.empty-state-icon i {
    width: 28px;
    height: 28px;
    color: var(--text-muted);
}

.empty-state-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.empty-state-desc {
    font-size: 13px;
    color: var(--text-muted);
}

/* ==========================================================================
   3. 우측 설정 사이드바 공통
   ========================================================================== */
.settings-sidebar {
    background-color: var(--bg-surface);
    border-left: 1px solid var(--border-color);
    padding: 24px 20px;
    height: calc(100vh - 60px);
    position: sticky;
    top: 60px;
    overflow-y: auto;
}

.settings-header {
    font-size: 17px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: -0.3px;
}

.settings-scroll-area {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

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

.setting-label {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-primary);
}

.setting-sublabel {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 4px;
    display: block;
}

.setting-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ==========================================================================
   4. 공통 UI 컴포넌트 (버튼, 폼, 세그먼트, 가이드 박스)
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 13.5px;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease-in-out;
    user-select: none;
}

.btn i {
    width: 16px;
    height: 16px;
}

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

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

.btn-secondary {
    background-color: var(--bg-muted);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    background-color: #e2e8f0;
    color: var(--text-primary);
}

.btn-outline {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background-color: var(--bg-muted);
    color: var(--text-primary);
}

.btn-save-large {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    font-weight: 800;
    background-color: #0f172a;
    color: #ffffff;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
    transition: all 0.2s;
    margin-bottom: 24px;
}

.btn-save-large:hover {
    background-color: #1e293b;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-save-large i {
    width: 20px;
    height: 20px;
}

.count-badge {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-muted);
    background-color: var(--bg-muted);
    padding: 6px 12px;
    border-radius: 20px;
}

/* 폼 요소 */
.form-select, .form-input {
    width: 100%;
    padding: 8px 12px;
    font-size: 13.5px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: #ffffff;
    color: var(--text-primary);
    outline: none;
    font-family: inherit;
}

.form-select:focus, .form-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-range {
    width: 100%;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.btn-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.btn-preset {
    padding: 6px 4px;
    font-size: 12px;
    font-weight: 600;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
}

.btn-preset:hover {
    background: var(--bg-muted);
    color: var(--text-primary);
}

/* 세그먼트 컨트롤 */
.segmented-control {
    display: flex;
    background-color: var(--bg-muted);
    padding: 3px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.segment-btn {
    flex: 1;
    padding: 7px 10px;
    font-size: 12.5px;
    font-weight: 600;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s;
    text-align: center;
}

.segment-btn.active {
    background-color: #ffffff;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    font-weight: 700;
}

/* 하단 사용 가이드 박스 */
.guide-box {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    box-shadow: var(--shadow-sm);
}

.guide-title {
    font-size: 14.5px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.guide-steps {
    padding-left: 20px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.guide-footnote {
    font-size: 11.5px;
    color: var(--text-muted);
    border-top: 1px dashed var(--border-color);
    padding-top: 10px;
}

/* 유틸리티 */
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-auto { margin-top: auto; }