/* =====================================================================
 * 김티 AI 코스웨어 — 메인(홈) 페이지 스타일
 * style.css 의 디자인 토큰(:root)을 그대로 사용한다.
 * ===================================================================== */

.home-body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.home-main {
    flex: 1;
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding: 40px 28px 64px;
}

/* 상단바 보조 */
.brand-link { text-decoration: none; color: inherit; }
.brand-link:hover .brand-name { color: var(--ac); }
.admin-email {
    font-family: var(--mono); font-size: 11.5px; color: var(--ink-3);
    max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* =========================== 히어로 =========================== */
.hero { text-align: center; padding: 26px 0 44px; animation: fadeUp .5s ease; }
.hero-kicker {
    font-family: var(--mono); font-size: 11px; letter-spacing: .2em;
    color: var(--ac); text-transform: uppercase; margin-bottom: 14px;
}
.hero-title {
    font-size: 40px; font-weight: 800; letter-spacing: -.03em; line-height: 1.15; margin-bottom: 14px;
}
.hero-sub { color: var(--ink-3); font-size: 15px; line-height: 1.75; }

/* =========================== 섹션 헤드 =========================== */
.sec-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 16px; }
.sec-head h2 { font-size: 15px; font-weight: 700; letter-spacing: -.01em; }
.sec-head .sec-num { font-family: var(--mono); font-size: 11px; color: var(--ink-4); }
.sec-head .sec-meta { margin-left: auto; font-size: 12px; color: var(--ink-4); }

/* =========================== 서비스 버튼 =========================== */
.services { margin-bottom: 52px; }
.service-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }

.service-btn {
    position: relative;
    display: flex; align-items: center; gap: 16px;
    padding: 22px 22px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    text-decoration: none; color: inherit;
    transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.service-btn:hover {
    transform: translateY(-2px);
    border-color: var(--ac);
    box-shadow: 0 12px 28px rgba(61, 99, 221, .14);
}
.service-btn:active { transform: translateY(0); }

.sv-num {
    position: absolute; top: 14px; right: 16px;
    font-family: var(--mono); font-size: 11px; color: var(--faint);
}
.sv-icon {
    flex: none; width: 50px; height: 50px; border-radius: 14px;
    background: var(--ac-tint); color: var(--ac);
    display: flex; align-items: center; justify-content: center;
}
.sv-body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.sv-name { font-size: 17px; font-weight: 700; letter-spacing: -.01em; }
.sv-desc { font-size: 12.5px; color: var(--ink-4); }
.sv-go { margin-left: auto; font-size: 18px; color: var(--faint); transition: color .16s ease, transform .16s ease; }
.service-btn:hover .sv-go { color: var(--ac); transform: translateX(2px); }

/* =========================== 연수방 채팅 =========================== */
.room { margin-bottom: 52px; scroll-margin-top: 80px; }
.room-chat { height: 520px; }
.chat-who { margin-left: auto; font-size: 11.5px; color: var(--ink-4); }
.chat-head .btn-danger-sm { margin-left: 10px; }
.room .notice-banner { margin-bottom: 14px; }

#join-nickname {
    flex: 1; min-width: 0; padding: 10px 14px; border: 1px solid var(--border); border-radius: 10px;
    font-size: 13.5px; outline: none; background: var(--muted-2); font-family: inherit; color: var(--ink);
    transition: border-color .15s, background .15s;
}
#join-nickname:focus { border-color: var(--ac); background: var(--surface); }

/* 관리자 콘솔 헤드(games.html) */
.admin-head .admin-email { margin-left: 4px; }
.admin-head .btn-ghost-sm { margin-left: auto; }

/* =========================== 이용 안내 =========================== */
.guide { margin-bottom: 20px; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 20px; }
.guide-card {
    display: flex; flex-direction: column; gap: 5px;
    padding: 16px 18px;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    text-decoration: none; color: inherit;
    transition: border-color .16s ease, background .16s ease;
}
.guide-card:hover { border-color: var(--border-strong); background: var(--muted-2); }
.gd-name { font-size: 14px; font-weight: 600; }
.gd-name::after { content: ' ↗'; font-size: 11px; color: var(--ink-4); }
.guide-card[href^="mailto:"] .gd-name::after { content: ' ✉'; }
.gd-desc { font-size: 12px; color: var(--ink-4); line-height: 1.55; }

.guide-note {
    background: var(--muted); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 18px 20px; display: flex; flex-direction: column; gap: 10px;
}
.guide-note p { font-size: 12.5px; line-height: 1.75; color: var(--ink-3); }
.guide-note strong { color: var(--ink-2); font-weight: 600; }
.guide-note a { color: var(--ac); }

/* =========================== 푸터 =========================== */
.site-foot {
    border-top: 1px solid var(--border);
    background: var(--surface);
    padding: 26px 28px 34px;
    text-align: center;
}
.site-foot--inner {
    background: transparent; margin-top: 34px; padding: 22px 0 0; border-radius: 0;
}
.foot-links {
    display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 18px; margin-bottom: 14px;
}
.foot-links a { font-size: 12.5px; color: var(--ink-3); text-decoration: none; }
.foot-links a:hover { color: var(--ac); text-decoration: underline; }
.foot-copy { font-size: 12px; color: var(--ink-4); line-height: 1.7; }
.foot-copy a { color: var(--ink-3); }
.foot-copy .sep { color: var(--border-strong); margin: 0 4px; }

/* =========================== 로그인 화면 보조(games.html) =========================== */
.login-links { margin-top: 16px; display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 12.5px; }
.login-links a { color: var(--ink-3); text-decoration: none; }
.login-links a:hover { color: var(--ac); }
.login-links .sep { color: var(--border-strong); }
.link-btn { background: none; border: none; padding: 0; font: inherit; color: var(--ink-3); cursor: pointer; }
.link-btn:hover { color: var(--ac); }

/* =========================== 반응형 =========================== */
@media (max-width: 860px) {
    .service-grid { grid-template-columns: 1fr; }
    .guide-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-title { font-size: 32px; }
}

@media (max-width: 560px) {
    .home-main { padding: 28px 18px 48px; }
    .hero { padding: 14px 0 32px; }
    .hero-title { font-size: 27px; }
    .hero-sub { font-size: 14px; }
    .guide-grid { grid-template-columns: 1fr; }
    .room-chat { height: 440px; }
    .service-btn { padding: 18px 16px; gap: 13px; }
    .sv-icon { width: 44px; height: 44px; border-radius: 12px; }
    .sv-name { font-size: 15.5px; }
    .admin-email { display: none; }
    .site-foot { padding: 22px 18px 30px; }
}

/* 버튼처럼 쓰이는 링크 (games.html 상단바의 '← 홈') */
a.btn-ghost { display: inline-flex; align-items: center; text-decoration: none; }