/* ============================================
 * /install — PWA 설치 전용 페이지 (모바일 우선)
 * common.css 토큰(--main-bg 등) 재사용
 * ============================================ */

.install-page {
    background: var(--gray-50);
    min-height: 100vh;
    min-height: 100dvh;
    font-family: 'Pretendard Variable', Pretendard, -apple-system, sans-serif;
    color: var(--black);
}

.install-wrap {
    max-width: 480px;
    margin: 0 auto;
    padding: 0 20px calc(24px + env(safe-area-inset-bottom));
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
}

/* 히어로 */
.install-hero {
    text-align: center;
    padding: 44px 0 28px;
}
.install-app-icon {
    width: 88px;
    height: 88px;
    border-radius: 22px;
    box-shadow: 0 6px 20px rgba(255, 126, 23, 0.25);
    background: #FEE34D;
}
.install-title {
    font-size: 22px;
    font-weight: 800;
    margin-top: 16px;
    color: var(--slate-900);
}
.install-lead {
    font-size: 16px;
    font-weight: 700;
    color: var(--main-bg);
    margin-top: 14px;
}
.install-sub {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
    margin-top: 8px;
}

/* 상태 섹션/카드 */
.install-body { flex: 1; }
.install-state.hidden { display: none; }
.install-card {
    background: var(--white);
    border-radius: 20px;
    padding: 28px 22px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    text-align: center;
}
.install-card-emoji { font-size: 40px; margin-bottom: 12px; }
.install-msg {
    font-size: 15px;
    line-height: 1.65;
    color: var(--slate-800);
    margin-bottom: 16px;
}
.install-note {
    font-size: 13px;
    color: var(--gray-600);
    line-height: 1.6;
    margin-top: 14px;
}
.install-note.hidden { display: none; }
.install-msg.hidden { display: none; }

/* 버튼 */
.install-btn-main {
    display: block;
    width: 100%;
    box-sizing: border-box;
    padding: 16px;
    border: 0;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--main-bg), var(--main-bg-dark));
    color: var(--white);
    font-size: 16px;
    font-weight: 800;
    font-family: inherit;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(255, 126, 23, 0.35);
}
.install-btn-main:active { transform: scale(0.98); }
.install-btn-main:focus-visible,
.install-btn-sec:focus-visible,
.install-web-link:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}
.install-btn-main.hidden { display: none; }
.install-btn-main[disabled] { opacity: 0.5; cursor: default; }
.install-btn-sec {
    display: block;
    width: 100%;
    box-sizing: border-box;
    margin-top: 10px;
    padding: 14px;
    border: 1.5px solid var(--gray-300);
    border-radius: 14px;
    background: var(--white);
    color: var(--slate-800);
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
}
.install-btn-sec:active { background: var(--gray-100); }

/* iOS 단계 카드 */
.install-steps {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}
.install-step {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--gray-50);
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 10px;
}
.install-step-num {
    flex: 0 0 auto;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--main-bg);
    color: var(--white);
    font-size: 14px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}
.install-step-txt {
    font-size: 14px;
    line-height: 1.55;
    color: var(--slate-800);
    padding-top: 3px;
}
.install-share-ic {
    display: inline-flex;
    vertical-align: -2px;
    margin: 0 2px;
    color: var(--accent-dark);
}

/* 로딩 스피너 */
#st-loading { text-align: center; padding: 40px 0; }
.install-spinner {
    width: 34px;
    height: 34px;
    margin: 0 auto;
    border: 4px solid var(--gray-200);
    border-top-color: var(--main-bg);
    border-radius: 50%;
    animation: install-spin 0.8s linear infinite;
}
@keyframes install-spin { to { transform: rotate(360deg); } }

/* 푸터 */
.install-footer {
    text-align: center;
    padding-top: 28px;
}
.install-web-link {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-600);
    text-decoration: none;
    padding: 10px 14px;
}
.install-footer-logo {
    font-size: 11px;
    color: var(--gray-400);
    margin-top: 10px;
    letter-spacing: 0.04em;
}

@media (min-width: 600px) {
    .install-hero { padding-top: 64px; }
    .install-card { padding: 32px 30px; }
}