/*=============================================
 * 부천고등학교 총동문회 - 메인 스타일
 * 디자인: 클래식/격조 있는 스타일
 * 색상: 네이비/골드 테마
 *=============================================*/

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-gray-900);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-navy);
    margin-bottom: 0.5em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--color-gold);
}

/* ===== Main Content ===== */
.main-content {
    min-height: calc(100vh - var(--navbar-height) - 300px);
}

/* ===== Section Styles ===== */
.section {
    padding: var(--section-padding) 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-navy);
    text-align: center;
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
    margin: 15px auto 0;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-gray-500);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* ===== Footer ===== */
.site-footer {
    background-color: var(--color-navy-dark);
    color: var(--color-gray-300);
}

.footer-top {
    padding: 60px 0 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo {
    height: 50px;
    width: auto;
    margin-right: 15px;
}

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

.footer-brand-main {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
}

.footer-brand-sub {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    color: var(--color-gold);
    letter-spacing: 1px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-gray-300);
    margin-bottom: 25px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-white);
    font-size: 18px;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background-color: var(--color-gold);
    color: var(--color-navy-dark);
    transform: translateY(-3px);
}

.footer-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-gold);
    display: inline-block;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--color-gray-300);
    font-size: 14px;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
}

.footer-links a::before {
    content: '›';
    margin-right: 8px;
    color: var(--color-gold);
    font-weight: bold;
}

.footer-links a:hover {
    color: var(--color-gold);
    padding-left: 5px;
}

.footer-contact {
    font-size: 14px;
}

.footer-contact p {
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
}

.footer-contact i {
    width: 20px;
    color: var(--color-gold);
    margin-right: 10px;
    margin-top: 2px;
}

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 20px 0;
    font-size: 13px;
}

.copyright {
    margin: 0;
    color: var(--color-gray-500);
}

.footer-policy {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 20px;
}

.footer-policy a {
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.footer-policy a:hover {
    color: var(--color-gold);
}

/* ===== Scroll to Top Button ===== */
.btn-scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
    color: var(--color-gold);
    border: 2px solid var(--color-gold);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 999;
    box-shadow: var(--shadow-lg);
}

.btn-scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.btn-scroll-top:hover {
    background: var(--color-gold);
    color: var(--color-navy-dark);
    transform: translateY(-5px);
}

/* ===== Cards ===== */
.card-bhs {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: none;
}

.card-bhs:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.card-bhs .card-header {
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
    color: var(--color-white);
    padding: 20px;
    border-bottom: 3px solid var(--color-gold);
}

.card-bhs .card-title {
    color: var(--color-white);
    margin-bottom: 0;
}

.card-bhs .card-body {
    padding: 25px;
}

/* ===== Breadcrumb ===== */
.breadcrumb-bhs {
    background-color: var(--color-gray-100);
    padding: 15px 0;
    margin-bottom: 0;
}

.breadcrumb-bhs .breadcrumb {
    margin-bottom: 0;
    background: transparent;
    padding: 0;
}

.breadcrumb-bhs .breadcrumb-item a {
    color: var(--color-gray-700);
}

.breadcrumb-bhs .breadcrumb-item a:hover {
    color: var(--color-gold);
}

.breadcrumb-bhs .breadcrumb-item.active {
    color: var(--color-navy);
    font-weight: 500;
}

.breadcrumb-bhs .breadcrumb-item + .breadcrumb-item::before {
    content: '›';
    color: var(--color-gold);
}

/* ===== Page Header ===== */
.page-header {
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-dark) 100%);
    padding: 60px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c9a227' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.page-header h1 {
    color: var(--color-white);
    font-size: 2.5rem;
    margin-bottom: 10px;
    position: relative;
}

.page-header p {
    color: var(--color-gray-300);
    font-size: 1.1rem;
    margin-bottom: 0;
    position: relative;
}

/* ===== Utility Classes ===== */
.text-gold {
    color: var(--color-gold) !important;
}

.text-navy {
    color: var(--color-navy) !important;
}

.bg-gold {
    background-color: var(--color-gold) !important;
}

.bg-navy {
    background-color: var(--color-navy) !important;
}

.bg-navy-dark {
    background-color: var(--color-navy-dark) !important;
}

.border-gold {
    border-color: var(--color-gold) !important;
}

/* ===== Selection ===== */
::selection {
    background-color: var(--color-gold);
    color: var(--color-navy-dark);
}

::-moz-selection {
    background-color: var(--color-gold);
    color: var(--color-navy-dark);
}

/* ===== Scrollbar (Webkit) ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-200);
}

::-webkit-scrollbar-thumb {
    background: var(--color-navy);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-navy-dark);
}