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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --text-color: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    min-height: 100vh;
}

/* 헤더 */
.header {
    text-align: center;
    padding: 2rem 1rem;
    background: var(--bg-color);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.header-icon {
    font-size: 4rem;
    margin-bottom: 0.5rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.subtitle {
    color: var(--text-light);
    font-size: 1rem;
}

/* 네비게이션 */
.nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    background: var(--bg-color);
    padding: 0.75rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.nav-btn {
    flex: 1;
    min-width: 100px;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.nav-btn:hover::before {
    left: 100%;
}

.nav-btn[data-page="home"] {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: #667eea;
}

.nav-btn[data-page="home"]:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-btn[data-page="input"] {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border-color: #f5576c;
}

.nav-btn[data-page="input"]:hover {
    background: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-btn[data-page="list"] {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    border-color: #4facfe;
}

.nav-btn[data-page="list"]:hover {
    background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-btn.active {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.nav-btn.active[data-page="home"] {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.nav-btn.active[data-page="input"] {
    background: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
}

.nav-btn.active[data-page="list"] {
    background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
}

.admin-btn {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    color: #1e293b;
    border-color: #fa709a;
    font-weight: 600;
}

.admin-btn:hover {
    background: linear-gradient(135deg, #fee140 0%, #fa709a 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.admin-btn.active {
    background: linear-gradient(135deg, #fee140 0%, #fa709a 100%);
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* 메인 컨텐츠 */
.main-content {
    background: var(--bg-color);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: var(--shadow);
    min-height: 400px;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page h2 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-size: 1.5rem;
}

/* 홈 페이지 */
.home-content {
    text-align: center;
    padding: 2rem 0;
}

.home-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 400px;
    margin: 2rem auto;
}

.action-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.action-btn.primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.action-btn.primary:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.action-btn.secondary {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
    border: none;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.action-btn.secondary:hover {
    background: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.action-btn.admin {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    color: #1e293b;
    border: none;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.action-btn.admin:hover {
    background: linear-gradient(135deg, #fee140 0%, #fa709a 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* 폼 스타일 */
.form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border: none;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-danger {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    color: #1e293b;
    border: none;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #fee140 0%, #fa709a 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 검색 섹션 */
.search-section {
    margin-bottom: 1.5rem;
}

.search-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-select {
    flex: 1;
    min-width: 150px;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
}

/* 리스트 컨테이너 */
.list-container {
    margin-top: 1.5rem;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
}

/* 카드형 리스트 (모바일) */
.member-card {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
}

.member-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.member-card-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
}

.member-card-info {
    display: grid;
    gap: 0.5rem;
}

.member-card-info-item {
    display: flex;
    justify-content: space-between;
}

.member-card-info-label {
    color: var(--text-light);
    font-weight: 500;
}

.member-card-info-value {
    color: var(--text-color);
}

/* 테이블형 리스트 (PC) */
.member-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    display: none;
}

.member-table th,
.member-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.member-table th {
    background: var(--bg-light);
    font-weight: 600;
    color: var(--text-color);
    position: sticky;
    top: 0;
}

.member-table tr:hover {
    background: var(--bg-light);
}

/* 관리자 테이블 */
.admin-table-container {
    overflow-x: auto;
    margin-top: 1.5rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.admin-table th,
.admin-table td {
    padding: 0.75rem;
    text-align: left;
    border: 1px solid var(--border-color);
}

.admin-table th {
    background: var(--bg-light);
    font-weight: 600;
    position: sticky;
    top: 0;
}

.admin-table tr:nth-child(even) {
    background: var(--bg-light);
}

.admin-table input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.9rem;
}

.admin-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

/* 모달 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s;
}

.modal-content.large {
    max-width: 700px;
}

.close {
    color: var(--text-light);
    float: right;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: var(--text-color);
}

.modal-content h3 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.password-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* 토스트 메시지 */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--text-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 6px;
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 2000;
    animation: slideUp 0.3s;
}

.toast.show {
    display: block;
}

.toast.success {
    background: var(--success-color);
}

.toast.error {
    background: var(--danger-color);
}

/* 반응형 디자인 */
@media (min-width: 768px) {
    .header h1 {
        font-size: 2.5rem;
    }

    .home-buttons {
        flex-direction: row;
        max-width: 600px;
    }

    .form {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }

    .form-group.full-width {
        grid-column: 1 / -1;
    }

    .form-actions {
        grid-column: 1 / -1;
    }

    .member-card {
        display: none;
    }

    .member-table {
        display: table;
    }

    .filters {
        flex-wrap: nowrap;
    }
}

@media (max-width: 767px) {
    .container {
        padding: 0.5rem;
    }

    .main-content {
        padding: 1rem;
    }

    .nav {
        flex-direction: column;
    }

    .nav-btn {
        width: 100%;
    }

    .admin-table-container {
        font-size: 0.8rem;
    }

    .admin-table th,
    .admin-table td {
        padding: 0.5rem;
    }

    .toast {
        right: 1rem;
        left: 1rem;
        bottom: 1rem;
    }
}

/* 애니메이션 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}