/* 전자계약서 관리 시스템 - 기본 스타일 */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #0891b2;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--gray-900);
    background: var(--gray-50);
    line-height: 1.6;
    font-size: 14px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Navbar */
.navbar {
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    padding: 0 24px;
    height: 56px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-brand a {
    font-weight: 700;
    font-size: 16px;
    color: var(--gray-900);
}
.nav-brand a:hover { text-decoration: none; }
.nav-links {
    display: flex;
    gap: 4px;
    margin-left: 32px;
}
.nav-links a {
    padding: 8px 16px;
    border-radius: var(--radius);
    color: var(--gray-500);
    font-weight: 500;
    transition: all 0.15s;
}
.nav-links a:hover { background: var(--gray-100); color: var(--gray-900); text-decoration: none; }
.nav-links a.active { background: var(--primary); color: #fff; }
.nav-user {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--gray-500);
    font-size: 13px;
}

/* Layout: Sidebar + Content */
.layout-wrapper {
    display: flex;
    min-height: calc(100vh - 56px);
}
.sidebar {
    width: 220px;
    min-width: 220px;
    background: #fff;
    border-right: 1px solid var(--gray-200);
    padding: 16px 0;
    overflow-y: auto;
    position: sticky;
    top: 56px;
    height: calc(100vh - 56px);
}
.sidebar-nav { display: flex; flex-direction: column; }
.sidebar-group { margin-bottom: 4px; }
.sidebar-group-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 700;
    color: var(--gray-700);
    cursor: pointer;
    user-select: none;
    transition: background 0.15s;
}
.sidebar-group-title:hover { background: var(--gray-50); }
.sidebar-arrow { font-size: 11px; color: var(--gray-500); }
.sidebar-group-items {
    display: none;
    flex-direction: column;
}
.sidebar-group-items.open { display: flex; }
.sidebar-group-items a {
    padding: 8px 18px 8px 36px;
    font-size: 13px;
    color: var(--gray-500);
    font-weight: 500;
    transition: all 0.15s;
    text-decoration: none;
    border-left: 3px solid transparent;
}
.sidebar-group-items a:hover { background: var(--gray-50); color: var(--gray-900); text-decoration: none; }
.sidebar-group-items a.active {
    color: var(--primary);
    font-weight: 600;
    background: #eff6ff;
    border-left-color: var(--primary);
}
.sidebar-divider { height: 1px; background: var(--gray-200); margin: 8px 16px; }
.sidebar-link {
    padding: 10px 18px;
    font-size: 13px;
    color: var(--gray-600);
    font-weight: 500;
    transition: all 0.15s;
    text-decoration: none;
    border-left: 3px solid transparent;
}
.sidebar-link:hover { background: var(--gray-50); color: var(--gray-900); text-decoration: none; }
.sidebar-link.active {
    color: var(--primary);
    font-weight: 600;
    background: #eff6ff;
    border-left-color: var(--primary);
}
.sidebar-disabled {
    color: var(--gray-400) !important;
    cursor: not-allowed !important;
}
.sidebar-disabled:hover {
    background: transparent !important;
    color: var(--gray-400) !important;
}
.main-content { flex: 1; min-width: 0; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 24px; }

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}
.page-header h2 { font-size: 20px; font-weight: 700; }

/* Cards */
.card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
}
.card-header h3 { font-size: 15px; font-weight: 600; }
.card-body { padding: 20px; }

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow);
}
.stat-number { font-size: 28px; font-weight: 700; color: var(--gray-900); }
.stat-label { font-size: 13px; color: var(--gray-500); margin-top: 4px; }
.stat-draft .stat-number { color: var(--gray-500); }
.stat-sent .stat-number { color: var(--primary); }
.stat-viewed .stat-number { color: var(--info); }
.stat-signed .stat-number { color: var(--success); }
.stat-returned .stat-number { color: var(--warning); }

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

/* Tables */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--gray-100);
    font-size: 13px;
}
.table th {
    font-weight: 600;
    color: var(--gray-500);
    background: var(--gray-50);
    font-size: 12px;
    text-transform: uppercase;
}
.table tbody tr:hover { background: var(--gray-50); }

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}
.badge-draft { background: var(--gray-100); color: var(--gray-500); }
.badge-sent { background: #dbeafe; color: var(--primary); }
.badge-viewed { background: #cffafe; color: var(--info); }
.badge-signed { background: #dcfce7; color: var(--success); }
.badge-returned { background: #fef3c7; color: var(--warning); }
.badge-cancelled { background: #fee2e2; color: var(--danger); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: #fff;
    color: var(--gray-700);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}
.btn:hover { background: var(--gray-50); text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-full { width: 100%; justify-content: center; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    margin-bottom: 4px;
    font-weight: 500;
    font-size: 13px;
    color: var(--gray-700);
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    transition: border-color 0.15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
}

/* Login */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 56px);
}
.login-box {
    background: #fff;
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 400px;
}
.login-box h1 {
    text-align: center;
    margin-bottom: 32px;
    font-size: 20px;
}

/* Flash Messages */
.flash-messages { margin-bottom: 16px; }
.flash {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 8px;
    font-size: 13px;
}
.flash-error { background: #fee2e2; color: var(--danger); border: 1px solid #fecaca; }
.flash-success { background: #dcfce7; color: var(--success); border: 1px solid #bbf7d0; }
.flash-info { background: #dbeafe; color: var(--primary); border: 1px solid #bfdbfe; }

/* Event List */
.event-list { list-style: none; }
.event-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 13px;
}
.event-type {
    background: var(--gray-100);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-500);
    min-width: 80px;
    text-align: center;
}
.event-detail { flex: 1; }
.event-time { color: var(--gray-500); font-size: 12px; }

/* Empty state */
.empty-text { text-align: center; color: var(--gray-500); padding: 32px; }

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.toolbar .search-input {
    flex: 1;
    max-width: 400px;
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-top: 20px;
}
.pagination a, .pagination span {
    padding: 6px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    font-size: 13px;
    color: var(--gray-700);
}
.pagination a:hover { background: var(--gray-100); text-decoration: none; }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}
.modal-overlay.show { display: flex; }
.modal {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
}
.modal-header h3 { font-size: 16px; }
.modal-body { padding: 20px; }
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 20px;
    border-top: 1px solid var(--gray-200);
}
.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--gray-500);
}

/* 햄버거 메뉴 버튼 */
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    margin-left: 8px;
}
.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--gray-600);
    border-radius: 2px;
    transition: all 0.2s;
}
/* 모바일 드롭다운 메뉴 */
.nav-mobile-menu {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: 0 4px 12px rgba(0,0,0,.1);
    z-index: 99;
    padding: 8px 0;
}
.nav-mobile-menu.open { display: block; }
.nav-mobile-menu a, .nav-mobile-menu button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 12px 20px;
    font-size: 15px;
    color: var(--gray-700);
    border: none;
    background: none;
    cursor: pointer;
    text-decoration: none;
    box-sizing: border-box;
}
.nav-mobile-menu a:hover, .nav-mobile-menu button:hover { background: var(--gray-50); }
.nav-mobile-menu a.active { color: var(--primary); font-weight: 600; }
.nav-mobile-menu .nav-mobile-divider { height: 1px; background: var(--gray-100); margin: 4px 0; }

/* Table responsive wrapper */
.table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .sidebar { width: 180px; min-width: 180px; }
    .sidebar-group-items a, .sidebar-link { font-size: 12px; }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
    .navbar { padding: 0 12px; }
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .sidebar { width: 180px; min-width: 180px; position: sticky; top: 0; height: 100vh; }
    .sidebar-group-title { padding: 8px 12px; font-size: 12px; }
    .sidebar-group-items a { padding: 6px 12px 6px 28px; font-size: 12px; }
    .sidebar-link { padding: 8px 12px; font-size: 12px; }
    .sidebar-divider { margin: 6px 10px; }
    .container { padding: 12px; }
    .page-header { flex-direction: column; align-items: flex-start; gap: 8px; }
    .page-header h2 { font-size: 18px; }
    .toolbar { flex-wrap: wrap; gap: 8px; }
    .toolbar .search-input { max-width: 100%; width: 100%; }
    .dashboard-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .table th, .table td { padding: 8px 6px; font-size: 12px; }
    .card-body { padding: 12px; }
    .btn { padding: 8px 12px; font-size: 12px; min-height: 36px; }
    .btn-sm { padding: 6px 10px; min-height: 32px; }
    .modal-overlay .modal { width: 95%; max-width: none; }
}

/* Responsive - Small Mobile */
@media (max-width: 480px) {
    .container { padding: 8px; }
    .page-header h2 { font-size: 16px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .toolbar { gap: 6px; }
    .table th, .table td { padding: 6px 4px; font-size: 11px; }
}