/* --- Google Fonts: Poppins --- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

/* --- CSS 변수를 사용한 디자인 시스템 --- */
:root {
    --primary-color: #4a69bd; /* 메인 색상 */
    --primary-hover-color: #5d82e1;
    --secondary-color: #6c757d;
    --light-gray-color: #f8f9fa;
    --border-color: #dee2e6;
    --text-color: #212529;
    --text-muted-color: #6c757d;
    --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.07);
    --border-radius: 12px;
}

/* --- 기본 스타일 --- */
body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--light-gray-color);
    color: var(--text-color);
}

/* --- 네비게이션 바 --- */
.navbar {
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
}

.nav-link {
    font-weight: 500;
    color: #555;
    transition: color 0.3s ease;
}

.nav-link.active,
.nav-link:hover {
    color: var(--primary-color) !important;
}

/* --- 메인 컨테이너 --- */
.main-container {
    padding: 60px 15px;
    max-width: 960px; /* 콘텐츠 너비 조정 */
    margin-left: auto;
    margin-right: auto;
}

/* --- 커스텀 카드 --- */
.custom-card {
    background-color: #fff;
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    overflow: hidden; /* 내부 요소가 카드를 벗어나지 않도록 */
}

.custom-card .card-body {
    padding: 2.5rem;
}

.custom-card .card-header,
.custom-card .card-footer {
    background-color: #fff;
    border-color: var(--border-color);
}


/* --- 폼 요소 --- */
.form-label {
    font-weight: 600;
    color: #333;
}

.form-control {
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(74, 105, 189, 0.25);
}

/* --- 버튼 --- */
.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover-color);
    border-color: var(--primary-hover-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(74, 105, 189, 0.3);
}

/* --- 공지사항 목록 --- */
.notice-list-item {
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1rem;
    transition: background-color 0.3s ease, transform 0.3s ease;
}
.notice-list-item:last-child {
    border-bottom: none;
}
.notice-list-item:hover {
    background-color: #f8f9fa;
    transform: translateX(5px);
}

/* --- 공지사항 보기 --- */
.notice-header {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}
.notice-content {
    min-height: 250px;
    line-height: 1.8;
    color: #333;
}

/* --- PC 등록 페이지 --- */
.pc-slot-item {
    transition: background-color 0.2s ease;
}
.pc-slot-item:hover {
    background-color: #fafafa;
}

/* --- 회원가입 완료 페이지 --- */
.completion-icon {
    font-size: 4rem;
    color: #198754; /* Bootstrap success color */
}

/* --- 푸터 --- */
.footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
    background-color: #fff;
    font-size: 0.9rem;
    color: var(--text-muted-color);
}